Publish original Headless Browser inputs from 91ca91ae26d6baf84fbc104431f13e577ca41abf

LICENSE

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README.md

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+---
+pretty_name: LexBench-Headless-Browser
+license:
+- apache-2.0
+- bsd-3-clause
+tags:
+- benchmark
+- evaluation
+- browser-eval
+- headless-browser
+- browser-compatibility
+- cdp
+- web-platform
+- browser-automation
+- self-hosted-fixtures
+task_categories:
+- other
+source_datasets: []
+language:
+- en
+configs:
+- config_name: l1.agent_browser_scenarios
+  data_files:
+  - split: test
+    path: data/l1.agent_browser_scenarios.jsonl
+- config_name: l1.agent_browser_tool
+  data_files:
+  - split: test
+    path: data/l1.agent_browser_tool.jsonl
+- config_name: l1.cdp_use
+  data_files:
+  - split: test
+    path: data/l1.cdp_use.jsonl
+- config_name: l1.chrome_devtools_mcp
+  data_files:
+  - split: test
+    path: data/l1.chrome_devtools_mcp.jsonl
+- config_name: l1.chrome_remote_interface
+  data_files:
+  - split: test
+    path: data/l1.chrome_remote_interface.jsonl
+- config_name: l1.chromedp
+  data_files:
+  - split: test
+    path: data/l1.chromedp.jsonl
+- config_name: l1.chromiumoxide
+  data_files:
+  - split: test
+    path: data/l1.chromiumoxide.jsonl
+- config_name: l1.ferrum
+  data_files:
+  - split: test
+    path: data/l1.ferrum.jsonl
+- config_name: l1.playwright
+  data_files:
+  - split: test
+    path: data/l1.playwright.jsonl
+- config_name: l1.puppeteer
+  data_files:
+  - split: test
+    path: data/l1.puppeteer.jsonl
+- config_name: l1.pydoll
+  data_files:
+  - split: test
+    path: data/l1.pydoll.jsonl
+- config_name: l1.raw_cdp
+  data_files:
+  - split: test
+    path: data/l1.raw_cdp.jsonl
+- config_name: l1.rod
+  data_files:
+  - split: test
+    path: data/l1.rod.jsonl
+- config_name: l1.selenium
+  data_files:
+  - split: test
+    path: data/l1.selenium.jsonl
+- config_name: l1.stagehand
+  data_files:
+  - split: test
+    path: data/l1.stagehand.jsonl
+- config_name: l2.playwright
+  data_files:
+  - split: test
+    path: data/l2.playwright.jsonl
+- config_name: l2.puppeteer
+  data_files:
+  - split: test
+    path: data/l2.puppeteer.jsonl
+- config_name: l2.web_platform
+  data_files:
+  - split: test
+    path: data/l2.web_platform.jsonl
+- config_name: scenario-specs
+  data_files:
+  - split: test
+    path: data/scenario-specs.jsonl
+---
+
+# LexBench-Headless-Browser
+
+A versioned data export of [Lexbench-Headless-Browser](https://github.com/lexmount/Lexbench-Headless-Browser/tree/91ca91ae26d6baf84fbc104431f13e577ca41abf). It preserves the original CDP compatibility tasks, web platform tests, scenario specifications, browser and driver configuration, and local fixtures.
+
+This edition contains **1,928 executable task definitions** across 18 subsets, **116 driver-neutral scenario specifications**, 269 fixture files and 5 configuration files. The upstream manifest declares benchmark version `0.4.2`; its browser binding configuration names 13 driver interfaces. Source commit: [`91ca91ae26d6baf84fbc104431f13e577ca41abf`](https://github.com/lexmount/Lexbench-Headless-Browser/commit/91ca91ae26d6baf84fbc104431f13e577ca41abf).
+
+## Populations and task contracts
+
+| Viewer group | Source suite | Tasks | Scope |
+| --- | --- | ---: | --- |
+| `l1.agent_browser_scenarios` | `l1.agent_browser_scenarios` | 89 | L1 cdp compatibility through tool_agent_browser; upstream task and grading contract unchanged |
+| `l1.agent_browser_tool` | `l1.agent_browser_tool` | 78 | L1 cdp compatibility through node_cdp_probe; upstream task and grading contract unchanged |
+| `l1.cdp_use` | `l1.cdp_use` | 92 | L1 cdp compatibility through thin_cdp_use; upstream task and grading contract unchanged |
+| `l1.chrome_devtools_mcp` | `l1.chrome_devtools_mcp` | 90 | L1 cdp compatibility through mcp_chrome_devtools; upstream task and grading contract unchanged |
+| `l1.chrome_remote_interface` | `l1.chrome_remote_interface` | 92 | L1 cdp compatibility through thin_chrome_remote_interface; upstream task and grading contract unchanged |
+| `l1.chromedp` | `l1.chromedp` | 92 | L1 cdp compatibility through thin_chromedp; upstream task and grading contract unchanged |
+| `l1.chromiumoxide` | `l1.chromiumoxide` | 92 | L1 cdp compatibility through thin_chromiumoxide; upstream task and grading contract unchanged |
+| `l1.ferrum` | `l1.ferrum` | 92 | L1 cdp compatibility through thin_ferrum; upstream task and grading contract unchanged |
+| `l1.playwright` | `l1.playwright` | 142 | L1 cdp compatibility through framework_playwright; upstream task and grading contract unchanged |
+| `l1.puppeteer` | `l1.puppeteer` | 143 | L1 cdp compatibility through framework_puppeteer; upstream task and grading contract unchanged |
+| `l1.pydoll` | `l1.pydoll` | 92 | L1 cdp compatibility through thin_pydoll; upstream task and grading contract unchanged |
+| `l1.raw_cdp` | `l1.raw_cdp` | 375 | L1 cdp compatibility through raw_cdp; upstream task and grading contract unchanged |
+| `l1.rod` | `l1.rod` | 92 | L1 cdp compatibility through thin_rod; upstream task and grading contract unchanged |
+| `l1.selenium` | `l1.selenium` | 87 | L1 cdp compatibility through webdriver_selenium; upstream task and grading contract unchanged |
+| `l1.stagehand` | `l1.stagehand` | 92 | L1 cdp compatibility through framework_stagehand; upstream task and grading contract unchanged |
+| `l2.playwright` | `l2.playwright` | 3 | L2 web platform semantics through framework_playwright; upstream task and grading contract unchanged |
+| `l2.puppeteer` | `l2.puppeteer` | 3 | L2 web platform semantics through framework_puppeteer; upstream task and grading contract unchanged |
+| `l2.web_platform` | `l2.web_platform` | 182 | L2 web platform semantics through node_cdp_probe; upstream task and grading contract unchanged |
+| `scenario-specs` | `scenario-specs` | 116 | Driver-neutral scenario specifications; a separate population from executable task subsets |
+
+The `l1.*` and `l2.*` configurations contain the executable tasks selected by the original manifest's `task_glob` entries. The `scenario-specs` configuration contains design specifications that can be expanded for several drivers. Keep its population separate: adding those specifications to the executable task count would count related work twice.
+
+- **L1 — CDP compatibility.** Protocol commands, framework and tool interfaces, navigation, DOM observation, interaction and other browser operations. Some probes are diagnostic and accept completion without grading returned values; the original tags, optional steps and checks state that scope.
+- **L2 — Web platform behavior.** Browser semantics checked against local fixture pages. The manifest, capability map and driver bindings define which combinations are eligible.
+- **Scenario specifications.** Driver-neutral steps, checks and expected answers. A scenario may have several executable driver translations, so repeated concepts across configurations are intentional.
+
+The declared drivers include Playwright, Puppeteer, Chrome Remote Interface, CDP Use, Pydoll, Stagehand, Chrome DevTools MCP, chromedp, Rod, Chromiumoxide, Ferrum, agent-browser and Selenium. The source manifest also includes raw CDP probes. Driver configuration is a compatibility contract; it does not establish that every driver works with every browser or that a particular run passed.
+
+## Files and fidelity
+
+`definitions/` keeps the original paths and bytes from the source commit:
+
+| Path | Contents |
+| --- | --- |
+| `manifest.json` | Benchmark version, layers, subsets, task globs, browser policy and fixture site contract |
+| `harness_pins.json` | Upstream runtime dependency pins |
+| `tasks/` | Original executable JSON tasks and scenario specifications, including assertions and source wording |
+| `config/` | Browser/driver bindings, capability maps, schemas and CDP waivers |
+| `fixtures/` | Local pages, scripts and assets used by the tasks |
+| `LICENSE`, `THIRD_PARTY_NOTICES.md` | Original license and attribution notices |
+
+The additive `definitions/registry.json` binds viewer configurations to their hashes, populations and original source paths. `definitions/viewer/` contains JSON projections for the dataset viewer. Each viewer row's `task` field is the original parsed task or scenario object; `source_path` locates its unchanged JSON file beneath `definitions/`. The export does not translate instructions, change assertions or replace expected answers. `manifest.json` at the repository root records release hashes and source identity; `definitions/manifest.json` remains the original upstream manifest.
+
+Viewer language labels describe the task and scenario instructions, which are English in this source edition. Fixture content and expected literals may use other languages; their original text is preserved.
+
+The archive `definitions.tar.gz` provides the same definition files. Measured attempts, browser responses, scores, generated reports, private captures, executable runner code and browser binaries have separate owners and are excluded from this dataset.
+
+## Load a pinned dataset
+
+Browser Eval records the selected Hugging Face commit in its data lock. Use that immutable revision for the viewer rows:
+
+```python
+import json
+from datasets import load_dataset
+from harness.benchmarks.data import binding
+
+selected = binding("headless-browser")
+rows = load_dataset(
+    selected["repository"],
+    "l1.raw_cdp",
+    revision=selected["revision"],
+    split="test",
+)
+row = rows[0]
+task = json.loads(row["task"])
+print(row["source_path"], task["task_id"], task["grader"])
+```
+
+Use `scenario-specs` to inspect the separate scenario population. Dataset access is public and requires no account or token. A Hugging Face data commit and an upstream Git code commit identify different things; retain both when recording a run.
+
+## Execute with the original runner
+
+The JSON files use the upstream driver's protocol. Its runner owns fixture routing, scenario expansion, driver adapters and inline grading. Obtain the matching code and follow the [pinned running instructions](https://github.com/lexmount/Lexbench-Headless-Browser/blob/91ca91ae26d6baf84fbc104431f13e577ca41abf/docs/RUNNING.md) for dependencies and browser binaries:
+
+Create a fresh checkout at the data's recorded code revision, then place the pinned Hugging Face definitions at the original paths. This example copies only the original-source inventory; the viewer projections and registry stay outside the runner's inputs.
+
+```python
+from pathlib import Path
+import hashlib
+import json
+import subprocess
+
+from harness.benchmarks.data import definition_path
+
+definitions = definition_path("headless-browser", ".")
+registry = json.loads((definitions / "registry.json").read_bytes())
+checkout = Path("/tmp/Lexbench-Headless-Browser")  # Must not already exist.
+subprocess.run(["git", "clone", registry["source"]["repository"], str(checkout)], check=True)
+subprocess.run(["git", "-C", str(checkout), "checkout", "--detach", registry["source"]["revision"]], check=True)
+actual = subprocess.check_output(["git", "-C", str(checkout), "rev-parse", "HEAD"], text=True).strip()
+assert actual == registry["source"]["revision"]
+for relative, expected in registry["source_files"].items():
+    raw = (definitions / relative).read_bytes()
+    assert len(raw) == expected["size"] and hashlib.sha256(raw).hexdigest() == expected["sha256"]
+    destination = checkout / relative
+    destination.parent.mkdir(parents=True, exist_ok=True)
+    destination.write_bytes(raw)
+```
+
+Run the original CLI from that checkout using the pinned guide's setup and scope options. The files it reads now come from the selected Hugging Face snapshot, including the original task JSON, fixtures, configuration, manifest and dependency pins.
+
+Check the source manifest and running guide before choosing a scope. Loading this dataset installs neither that runner nor its runtime dependencies. The local fixture server is implemented in [`runner/run.py`](https://github.com/lexmount/Lexbench-Headless-Browser/blob/91ca91ae26d6baf84fbc104431f13e577ca41abf/runner/run.py); driver-neutral expansion and platform semantics also depend on the original runner modules and adapters.
+
+[Browser Eval's curated Browser Trajectory Replay](https://github.com/lexmount/browser-eval/blob/cca59ee3f6b73c61c2ffaa1b2069e0b7c31a6884/examples/trajectory_replay/README.md) uses its own tasks, BrowserTool actions, qualification evidence and scoring contract. It drew on this scenario collection, but uses a separate execution format. Existing report protocols may select smaller, hash-bound populations such as the historical 372-task protocol; their scores and denominators remain attached to those original runs. The complete source collection published here does not expand an earlier report's measured population.
+
+## License and citation
+
+The upstream project uses [Apache-2.0](definitions/LICENSE). Included WPT and Chromium fixtures retain their BSD-3-Clause notices in [THIRD_PARTY_NOTICES.md](THIRD_PARTY_NOTICES.md). Preserve those notices when redistributing the data.
+
+```bibtex
+@misc{lexbench_headless_browser,
+  author = {Lexmount},
+  title = {LexBench-Headless-Browser},
+  year = {2026},
+  url = {https://github.com/lexmount/Lexbench-Headless-Browser},
+  version = {91ca91ae26d6baf84fbc104431f13e577ca41abf}
+}
+```
+
+When using Browser Eval's separate replay harness, also cite [Browser Eval](https://github.com/lexmount/browser-eval).

THIRD_PARTY_NOTICES.md

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+# Third-party notices
+
+Lexbench-Headless-Browser is licensed under Apache-2.0. Some benchmark tasks and
+self-hosted fixtures were rewritten from Web Platform Tests (WPT), or designed
+with reference to Chromium inspector-protocol tests. The benchmark does not fetch
+or execute either upstream suite at run time; the checked-in task, fixture, and
+grader files are the complete runnable corpus.
+
+This file keeps the upstream attribution and license text in one place. The paths
+below identify the public upstream material associated with each checked-in task.
+
+## Web Platform Tests
+
+Upstream: <https://github.com/web-platform-tests/wpt>
+
+| Task | WPT source path(s) |
+|:---|:---|
+| `v2_idb_blob_value` | `IndexedDB/blob-valid-before-commit.htm` |
+| `v2_idb_compound_key` | `IndexedDB/keypath.htm`<br>`IndexedDB/keyorder.htm` |
+| `v2_idb_cursor_advance` | `IndexedDB/idbcursor_advance_objectstore.htm` |
+| `v2_idb_cursor_forward` | `IndexedDB/idbcursor_continue_objectstore.htm` |
+| `v2_idb_cursor_reverse` | `IndexedDB/idbcursor-direction-objectstore.htm` |
+| `v2_idb_getall_keys_count` | `IndexedDB/idbobjectstore_getAllKeys.html`<br>`IndexedDB/idbobjectstore_count.htm` |
+| `v2_idb_index_query` | `IndexedDB/idbindex_getAll.html` |
+| `v2_idb_index_range_count` | `IndexedDB/idbindex_count.htm`<br>`IndexedDB/idbindex_getAllKeys.html` |
+| `v2_idb_keyrange_bound` | `IndexedDB/idbkeyrange.htm` |
+| `v2_idb_keyrange_only_upper` | `IndexedDB/idbkeyrange.htm` |
+| `v2_idb_multientry_index` | `IndexedDB/idbindex-multientry-arraykeypath.htm` |
+| `v2_idb_multistore_atomic` | `IndexedDB/transaction-scope.html` |
+| `v2_idb_nested_keypath` | `IndexedDB/keypath.htm` |
+| `v2_idb_txn_abort_rollback` | `IndexedDB/transaction-abort.htm` |
+| `v2_idb_upgrade_migrate` | `IndexedDB/idbfactory_open9.htm`<br>`IndexedDB/idbversionchangeevent.htm` |
+| `v2_wpt_crypto_aesgcm_roundtrip` | `WebCryptoAPI/encrypt_decrypt/aes_gcm.https.any.js` |
+| `v2_wpt_crypto_digest_bytelength` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_crypto_getrandomvalues_shape` | `WebCryptoAPI/getRandomValues.any.js` |
+| `v2_wpt_crypto_hmac_roundtrip` | `WebCryptoAPI/sign_verify/hmac.https.any.js` |
+| `v2_wpt_crypto_hmac_tamper` | `WebCryptoAPI/sign_verify/hmac.https.any.js` |
+| `v2_wpt_crypto_sha1_abc` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_crypto_sha256_abc` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_crypto_sha256_empty` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_crypto_sha384_abc` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_crypto_sha512_abc` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_css_at_property` | `css/css-properties-values-api/at-property.html` |
+| `v2_wpt_css_cascade_important` | `css/css-cascade/important-vs-inline-001.html` |
+| `v2_wpt_css_constructable` | `css/cssom/CSSStyleSheet-constructable.html` |
+| `v2_wpt_css_focus_within` | `css/selectors/focus-within-001.html` |
+| `v2_wpt_css_has_forgiving` | `css/selectors/has-specificity.html` |
+| `v2_wpt_css_is_specificity` | `css/selectors/is-specificity.html` |
+| `v2_wpt_css_nth_child_of` | `css/selectors/nth-child-of-classname.html` |
+| `v2_wpt_css_property_inherits` | `css/css-properties-values-api/registered-properties-inheritance.html` |
+| `v2_wpt_css_register_syntax` | `css/css-properties-values-api/register-property-syntax-parsing.html` |
+| `v2_wpt_css_where_zero` | `css/selectors/is-where-basic.html` |
+| `v2_wpt_dom_abortsignal` | `dom/abort/event.any.js` |
+| `v2_wpt_dom_adoptnode` | `dom/nodes/Document-adoptNode.html`<br>`dom/nodes/Document-importNode.html` |
+| `v2_wpt_dom_clonenode` | `dom/nodes/Node-cloneNode.html` |
+| `v2_wpt_dom_domparser` | `domparsing/DOMParser-parseFromString-xml-doctype.html`<br>`domparsing/DOMParser-parseFromString-html.html` |
+| `v2_wpt_dom_event_order` | `dom/events/Event-dispatch-order.html` |
+| `v2_wpt_dom_event_stopprop` | `dom/events/Event-dispatch-propagation-stopped.html` |
+| `v2_wpt_dom_mo_attributes` | `dom/nodes/MutationObserver-attributes.html` |
+| `v2_wpt_dom_mo_chardata` | `dom/nodes/MutationObserver-characterData.html` |
+| `v2_wpt_dom_mo_childlist` | `dom/nodes/MutationObserver-childList.html` |
+| `v2_wpt_dom_nodeiterator` | `dom/traversal/NodeIterator.html` |
+| `v2_wpt_dom_range_extract` | `dom/ranges/Range-extractContents.html` |
+| `v2_wpt_dom_range_surround` | `dom/ranges/Range-surroundContents.html` |
+| `v2_wpt_dom_template_content` | `html/semantics/scripting-1/the-template-element/template-element/template-content.html` |
+| `v2_wpt_dom_treewalker_filter` | `dom/traversal/TreeWalker-acceptNode-filter.html` |
+| `v2_wpt_enc_bom_strip` | `encoding/textdecoder-byte-order-marks.any.js` |
+| `v2_wpt_enc_encode_into` | `encoding/encodeInto.any.js` |
+| `v2_wpt_enc_encoding_prop` | `encoding/api-basics.any.js` |
+| `v2_wpt_enc_fatal_throws` | `encoding/textdecoder-fatal.any.js` |
+| `v2_wpt_enc_labels` | `encoding/textdecoder-labels.any.js` |
+| `v2_wpt_enc_nonfatal_replacement` | `encoding/textdecoder-fatal.any.js` |
+| `v2_wpt_enc_stream_split` | `encoding/streams/decode-utf8.any.js`<br>`encoding/textdecoder-stream.any.js` |
+| `v2_wpt_enc_surrogate_replace` | `encoding/api-surrogates-utf8.any.js` |
+| `v2_wpt_enc_utf8_astral` | `encoding/api-basics.any.js` |
+| `v2_wpt_store_coerce_string` | `webstorage/storage_setitem.window.js` |
+| `v2_wpt_store_cookie_multiple` | `cookies/name/name.html`<br>`cookies/value/value.html` |
+| `v2_wpt_store_cookie_readwrite` | `cookies/value/value.html` |
+| `v2_wpt_store_event_fires` | `webstorage/event_basic.html`<br>`webstorage/event_local_newvalue.html` |
+| `v2_wpt_store_key_order` | `webstorage/storage_key.window.js` |
+| `v2_wpt_store_local_setget` | `webstorage/storage_setitem.window.js`<br>`webstorage/storage_removeitem.window.js`<br>`webstorage/storage_key.window.js` |
+| `v2_wpt_store_overwrite_length` | `webstorage/storage_setitem.window.js` |
+| `v2_wpt_store_removeitem_missing` | `webstorage/storage_removeitem.window.js` |
+| `v2_wpt_store_session_local_independent` | `webstorage/storage_getitem.window.js`<br>`webstorage/event_session_key.html` |
+| `v2_wpt_url_backslash` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_default_port_http` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_empty_query` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_idn_punycode` | `url/url-constructor.any.js`<br>`url/toascii.window.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_lowercase_host` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_nonspecial_opaque` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_pct_space_path` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_protocol_relative` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_rel_dot` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_rel_dotdot` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_sp_getall` | `url/urlsearchparams-getall.any.js` |
+| `v2_wpt_url_sp_plus_space` | `url/urlsearchparams-constructor.any.js` |
+| `v2_wpt_url_sp_set_replace` | `url/urlsearchparams-set.any.js` |
+| `v2_wpt_url_sp_sort` | `url/urlsearchparams-sort.any.js` |
+
+### WPT license (BSD-3-Clause)
+
+Copyright © web-platform-tests contributors
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+3. Neither the name of the copyright holder nor the names of its contributors may
+   be used to endorse or promote products derived from this software without
+   specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+OF THE POSSIBILITY OF SUCH DAMAGE.
+
+## Chromium inspector-protocol tests
+
+Upstream: <https://chromium.googlesource.com/chromium/src/>
+
+| Upstream area | Associated task IDs |
+|:---|:---|
+| `chromium inspector-protocol accessibility/` | `v2_ax_aria_hidden_ignored`<br>`v2_ax_checkbox_checked_state`<br>`v2_ax_control_disabled_state`<br>`v2_ax_depth_truncation`<br>`v2_ax_enable_disable_idempotent`<br>`v2_ax_heading_level_property`<br>`v2_ax_iframe_frameid_scope`<br>`v2_ax_name_arialabel_priority`<br>`v2_ax_name_from_label_association`<br>`v2_ax_query_by_name`<br>`v2_ax_query_by_role`<br>`v2_ax_role_name_value_triples` |
+| `chromium inspector-protocol input/` | `v2_act_dispatchkey_listener`<br>`v2_act_inserttext_value` |
+| `chromium inspector-protocol runtime/` | `v2_act_binding_execution_context`<br>`v2_act_binding_roundtrip`<br>`v2_act_callfn_arguments`<br>`v2_act_callfn_await_promise`<br>`v2_act_callfn_element_click`<br>`v2_act_callfn_exception`<br>`v2_act_callfn_return_by_value`<br>`v2_act_getprops_accessor`<br>`v2_act_getprops_own`<br>`v2_act_release_object`<br>`v2_act_release_object_group` |
+| `chromium test/inspector-protocol/fetch/` | `v2_fetch_continue_request_modify_headers`<br>`v2_fetch_continue_request_modify_url`<br>`v2_fetch_continue_with_auth_probe`<br>`v2_fetch_disable_stops_pausing`<br>`v2_fetch_enable_no_patterns`<br>`v2_fetch_enable_patterns_continue`<br>`v2_fetch_fail_request`<br>`v2_fetch_fail_request_alt_reason`<br>`v2_fetch_fulfill_custom_response`<br>`v2_fetch_fulfill_json`<br>`v2_fetch_fulfill_status_override_404`<br>`v2_fetch_load_network_resource`<br>`v2_fetch_network_get_response_body`<br>`v2_fetch_network_relative_ordering`<br>`v2_fetch_request_paused_request_stage_fields`<br>`v2_fetch_response_stage_take_stream`<br>`v2_ifx_block_resource_fallback`<br>`v2_ifx_header_rewrite_client`<br>`v2_ifx_json_field_inject`<br>`v2_ifx_mock_api_rewrite`<br>`v2_ifx_multi_intercept`<br>`v2_ifx_request_rewrite_url`<br>`v2_ifx_response_body_tamper`<br>`v2_ifx_status_override_branch` |
+
+### Chromium license (BSD-3-Clause)
+
+Copyright 2015 The Chromium Authors
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+3. Neither the name of Google LLC nor the names of its contributors may be used
+   to endorse or promote products derived from this software without specific
+   prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+OF THE POSSIBILITY OF SUCH DAMAGE.

data/l2.playwright.jsonl

@@ -0,0 +1,3 @@
+{"driver": "framework_playwright", "family": "browser-protocol-and-web-platform", "id": "v3_pw_flow_login_filter", "input": "real Playwright login -> list -> premium filter", "language": "en", "layer": "L2", "source_path": "tasks/L2/playwright/v3_pw_flow_login_filter.json", "source_suite": "l2.playwright", "task": "{\"artifact_profile\": \"l2_standard\", \"description\": \"End-to-end multi-step flow with real Playwright: fill username 'eric' and the access code (the login form's data-code 'k9x2' reversed, never present as a literal), click sign-in (on_framework_main_path pointer click) which navigates to the list page, wait for the item list, click the premium filter, and read #summary. The expected token 'ERIC-57' is composed at runtime from the uppercased username and the sum of premium item points (21+9+27); it appears nowhere in the fixtures.\", \"driver\": {\"checks\": [{\"kind\": \"step_ok\", \"label\": \"goto_ok\", \"step\": 1}, {\"kind\": \"step_ok\", \"label\": \"list_page_ready\", \"step\": 5}], \"kind\": \"framework_playwright\", \"steps\": [{\"op\": \"new_page\"}, {\"op\": \"goto\", \"url\": \"{fixture_url}\"}, {\"op\": \"fill\", \"selector\": \"#user\", \"value\": \"eric\"}, {\"op\": \"fill\", \"selector\": \"#pass\", \"value\": \"2x9k\"}, {\"op\": \"click\", \"selector\": \"#signin\"}, {\"op\": \"wait_for_selector\", \"selector\": \"#items\"}, {\"op\": \"click\", \"selector\": \"#premium-filter\"}, {\"op\": \"text_content\", \"save_as\": \"answer\", \"selector\": \"#summary\"}]}, \"features\": [\"fw.playwright.page.fill\", \"fw.playwright.page.click\", \"fw.playwright.page.wait_for_selector\", \"fw.playwright.page.text_content\", \"cdp.input.insert_text\", \"cdp.input.dispatch_mouse_event\", \"cdp.page.lifecycle_event\", \"cdp.runtime.call_function_on\"], \"grader\": {\"endpoint\": \"/__grade__/expected_answer\", \"kind\": \"server_side\"}, \"layer\": \"L2\", \"scene\": {\"kind\": \"self_hosted_fixture\", \"url\": \"/v0_3/flow/login\"}, \"subset_id\": \"l2.playwright\", \"tags\": [\"family.flow\", \"version.v0_3\"], \"task_id\": \"v3_pw_flow_login_filter\", \"task_version\": 2, \"timeouts\": {\"hard_kill_ms\": 45000, \"task_ms\": 30000}, \"title\": \"real Playwright login -> list -> premium filter\"}"}
+{"driver": "framework_playwright", "family": "browser-protocol-and-web-platform", "id": "v3_pw_flow_records_stat", "input": "real Playwright select filter -> aggregated stat", "language": "en", "layer": "L2", "source_path": "tasks/L2/playwright/v3_pw_flow_records_stat.json", "source_suite": "l2.playwright", "task": "{\"artifact_profile\": \"l2_standard\", \"description\": \"End-to-end multi-step flow with real Playwright: on the records fixture, select 'ops' in the department dropdown via the framework's native select path, click apply (on_framework_main_path), and read #stat. The page filters table rows by data-dept and aggregates count and rounded mean from data-score attributes at runtime (62,71,89 -> 'ops:3:74'); the token is never present as a literal.\", \"driver\": {\"checks\": [{\"kind\": \"step_ok\", \"label\": \"goto_ok\", \"step\": 1}], \"kind\": \"framework_playwright\", \"steps\": [{\"op\": \"new_page\"}, {\"op\": \"goto\", \"url\": \"{fixture_url}\"}, {\"op\": \"select_option\", \"selector\": \"#dept-filter\", \"value\": \"ops\"}, {\"op\": \"click\", \"selector\": \"#apply\"}, {\"op\": \"text_content\", \"save_as\": \"answer\", \"selector\": \"#stat\"}]}, \"features\": [\"fw.playwright.page.select_option\", \"fw.playwright.page.click\", \"fw.playwright.page.text_content\", \"cdp.input.dispatch_mouse_event\", \"cdp.runtime.call_function_on\"], \"grader\": {\"endpoint\": \"/__grade__/expected_answer\", \"kind\": \"server_side\"}, \"layer\": \"L2\", \"scene\": {\"kind\": \"self_hosted_fixture\", \"url\": \"/v0_3/flow/records\"}, \"subset_id\": \"l2.playwright\", \"tags\": [\"family.flow\", \"version.v0_3\"], \"task_id\": \"v3_pw_flow_records_stat\", \"task_version\": 2, \"timeouts\": {\"hard_kill_ms\": 45000, \"task_ms\": 30000}, \"title\": \"real Playwright select filter -> aggregated stat\"}"}
+{"driver": "framework_playwright", "family": "browser-protocol-and-web-platform", "id": "v3_pw_flow_shop_cart", "input": "real Playwright paged shop add-to-cart across three pages", "language": "en", "layer": "L2", "source_path": "tasks/L2/playwright/v3_pw_flow_shop_cart.json", "source_suite": "l2.playwright", "task": "{\"artifact_profile\": \"l2_standard\", \"description\": \"End-to-end multi-step flow with real Playwright: on the paged shop fixture, add gamma on page 1, click next, add keyboard on page 2, click next, add lamp on page 3, then read #cart-total. All clicks ride the real pointer path (on_framework_main_path) and the page re-renders its catalog on every page turn, so stale element handling matters. The expected total '17.40' emerges from cents accumulation (450+990+300)/100 and exists nowhere as a literal in the fixture.\", \"driver\": {\"checks\": [{\"kind\": \"step_ok\", \"label\": \"goto_ok\", \"step\": 1}], \"kind\": \"framework_playwright\", \"steps\": [{\"op\": \"new_page\"}, {\"op\": \"goto\", \"url\": \"{fixture_url}\"}, {\"op\": \"click\", \"selector\": \"#add-gamma\"}, {\"op\": \"click\", \"selector\": \"#next-page\"}, {\"op\": \"click\", \"selector\": \"#add-keyboard\"}, {\"op\": \"click\", \"selector\": \"#next-page\"}, {\"op\": \"click\", \"selector\": \"#add-lamp\"}, {\"op\": \"text_content\", \"save_as\": \"answer\", \"selector\": \"#cart-total\"}]}, \"features\": [\"fw.playwright.page.click\", \"fw.playwright.page.text_content\", \"cdp.input.dispatch_mouse_event\", \"cdp.dom.get_content_quads\", \"cdp.dom.scroll_into_view_if_needed\", \"cdp.runtime.call_function_on\"], \"grader\": {\"endpoint\": \"/__grade__/expected_answer\", \"kind\": \"server_side\"}, \"layer\": \"L2\", \"scene\": {\"kind\": \"self_hosted_fixture\", \"url\": \"/v0_3/flow/shop\"}, \"subset_id\": \"l2.playwright\", \"tags\": [\"family.flow\", \"version.v0_3\"], \"task_id\": \"v3_pw_flow_shop_cart\", \"task_version\": 2, \"timeouts\": {\"hard_kill_ms\": 45000, \"task_ms\": 30000}, \"title\": \"real Playwright paged shop add-to-cart across three pages\"}"}

data/l2.puppeteer.jsonl

@@ -0,0 +1,3 @@
+{"driver": "framework_puppeteer", "family": "browser-protocol-and-web-platform", "id": "v3_pp_flow_login_filter", "input": "real Puppeteer login -> list -> premium filter", "language": "en", "layer": "L2", "source_path": "tasks/L2/puppeteer/v3_pp_flow_login_filter.json", "source_suite": "l2.puppeteer", "task": "{\"artifact_profile\": \"l2_standard\", \"description\": \"End-to-end multi-step flow with real Puppeteer: fill username 'eric' and the access code (the login form's data-code 'k9x2' reversed, never present as a literal), click sign-in (on_framework_main_path pointer click) which navigates to the list page, wait for the item list, click the premium filter, and read #summary. The expected token 'ERIC-57' is composed at runtime from the uppercased username and the sum of premium item points (21+9+27); it appears nowhere in the fixtures.\", \"driver\": {\"checks\": [{\"kind\": \"step_ok\", \"label\": \"goto_ok\", \"step\": 1}, {\"kind\": \"step_ok\", \"label\": \"list_page_ready\", \"step\": 5}], \"kind\": \"framework_puppeteer\", \"steps\": [{\"op\": \"new_page\"}, {\"op\": \"goto\", \"url\": \"{fixture_url}\"}, {\"op\": \"fill\", \"selector\": \"#user\", \"value\": \"eric\"}, {\"op\": \"fill\", \"selector\": \"#pass\", \"value\": \"2x9k\"}, {\"op\": \"click\", \"selector\": \"#signin\"}, {\"op\": \"wait_for_selector\", \"selector\": \"#items\"}, {\"op\": \"click\", \"selector\": \"#premium-filter\"}, {\"op\": \"text_content\", \"save_as\": \"answer\", \"selector\": \"#summary\"}]}, \"features\": [\"fw.puppeteer.locator.fill\", \"fw.puppeteer.page.click\", \"fw.puppeteer.page.wait_for_selector\", \"fw.puppeteer.page.$eval\", \"cdp.input.dispatch_key_event\", \"cdp.input.dispatch_mouse_event\", \"cdp.page.lifecycle_event\", \"cdp.runtime.call_function_on\"], \"grader\": {\"endpoint\": \"/__grade__/expected_answer\", \"kind\": \"server_side\"}, \"layer\": \"L2\", \"scene\": {\"kind\": \"self_hosted_fixture\", \"url\": \"/v0_3/flow/login\"}, \"subset_id\": \"l2.puppeteer\", \"tags\": [\"family.flow\", \"version.v0_3\"], \"task_id\": \"v3_pp_flow_login_filter\", \"task_version\": 2, \"timeouts\": {\"hard_kill_ms\": 45000, \"task_ms\": 30000}, \"title\": \"real Puppeteer login -> list -> premium filter\"}"}
+{"driver": "framework_puppeteer", "family": "browser-protocol-and-web-platform", "id": "v3_pp_flow_records_stat", "input": "real Puppeteer select filter -> aggregated stat", "language": "en", "layer": "L2", "source_path": "tasks/L2/puppeteer/v3_pp_flow_records_stat.json", "source_suite": "l2.puppeteer", "task": "{\"artifact_profile\": \"l2_standard\", \"description\": \"End-to-end multi-step flow with real Puppeteer: on the records fixture, select 'ops' in the department dropdown via the framework's native select path, click apply (on_framework_main_path), and read #stat. The page filters table rows by data-dept and aggregates count and rounded mean from data-score attributes at runtime (62,71,89 -> 'ops:3:74'); the token is never present as a literal.\", \"driver\": {\"checks\": [{\"kind\": \"step_ok\", \"label\": \"goto_ok\", \"step\": 1}], \"kind\": \"framework_puppeteer\", \"steps\": [{\"op\": \"new_page\"}, {\"op\": \"goto\", \"url\": \"{fixture_url}\"}, {\"op\": \"select_option\", \"selector\": \"#dept-filter\", \"value\": \"ops\"}, {\"op\": \"click\", \"selector\": \"#apply\"}, {\"op\": \"text_content\", \"save_as\": \"answer\", \"selector\": \"#stat\"}]}, \"features\": [\"fw.puppeteer.page.select\", \"fw.puppeteer.page.click\", \"fw.puppeteer.page.$eval\", \"cdp.input.dispatch_mouse_event\", \"cdp.runtime.call_function_on\"], \"grader\": {\"endpoint\": \"/__grade__/expected_answer\", \"kind\": \"server_side\"}, \"layer\": \"L2\", \"scene\": {\"kind\": \"self_hosted_fixture\", \"url\": \"/v0_3/flow/records\"}, \"subset_id\": \"l2.puppeteer\", \"tags\": [\"family.flow\", \"version.v0_3\"], \"task_id\": \"v3_pp_flow_records_stat\", \"task_version\": 2, \"timeouts\": {\"hard_kill_ms\": 45000, \"task_ms\": 30000}, \"title\": \"real Puppeteer select filter -> aggregated stat\"}"}
+{"driver": "framework_puppeteer", "family": "browser-protocol-and-web-platform", "id": "v3_pp_flow_shop_cart", "input": "real Puppeteer paged shop add-to-cart across three pages", "language": "en", "layer": "L2", "source_path": "tasks/L2/puppeteer/v3_pp_flow_shop_cart.json", "source_suite": "l2.puppeteer", "task": "{\"artifact_profile\": \"l2_standard\", \"description\": \"End-to-end multi-step flow with real Puppeteer: on the paged shop fixture, add gamma on page 1, click next, add keyboard on page 2, click next, add lamp on page 3, then read #cart-total. All clicks ride the real pointer path (on_framework_main_path) and the page re-renders its catalog on every page turn, so stale element handling matters. The expected total '17.40' emerges from cents accumulation (450+990+300)/100 and exists nowhere as a literal in the fixture.\", \"driver\": {\"checks\": [{\"kind\": \"step_ok\", \"label\": \"goto_ok\", \"step\": 1}], \"kind\": \"framework_puppeteer\", \"steps\": [{\"op\": \"new_page\"}, {\"op\": \"goto\", \"url\": \"{fixture_url}\"}, {\"op\": \"click\", \"selector\": \"#add-gamma\"}, {\"op\": \"click\", \"selector\": \"#next-page\"}, {\"op\": \"click\", \"selector\": \"#add-keyboard\"}, {\"op\": \"click\", \"selector\": \"#next-page\"}, {\"op\": \"click\", \"selector\": \"#add-lamp\"}, {\"op\": \"text_content\", \"save_as\": \"answer\", \"selector\": \"#cart-total\"}]}, \"features\": [\"fw.puppeteer.page.click\", \"fw.puppeteer.page.$eval\", \"cdp.input.dispatch_mouse_event\", \"cdp.dom.get_content_quads\", \"cdp.dom.scroll_into_view_if_needed\", \"cdp.runtime.call_function_on\"], \"grader\": {\"endpoint\": \"/__grade__/expected_answer\", \"kind\": \"server_side\"}, \"layer\": \"L2\", \"scene\": {\"kind\": \"self_hosted_fixture\", \"url\": \"/v0_3/flow/shop\"}, \"subset_id\": \"l2.puppeteer\", \"tags\": [\"family.flow\", \"version.v0_3\"], \"task_id\": \"v3_pp_flow_shop_cart\", \"task_version\": 2, \"timeouts\": {\"hard_kill_ms\": 45000, \"task_ms\": 30000}, \"title\": \"real Puppeteer paged shop add-to-cart across three pages\"}"}

definitions/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
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definitions/THIRD_PARTY_NOTICES.md

@@ -0,0 +1,163 @@
+# Third-party notices
+
+Lexbench-Headless-Browser is licensed under Apache-2.0. Some benchmark tasks and
+self-hosted fixtures were rewritten from Web Platform Tests (WPT), or designed
+with reference to Chromium inspector-protocol tests. The benchmark does not fetch
+or execute either upstream suite at run time; the checked-in task, fixture, and
+grader files are the complete runnable corpus.
+
+This file keeps the upstream attribution and license text in one place. The paths
+below identify the public upstream material associated with each checked-in task.
+
+## Web Platform Tests
+
+Upstream: <https://github.com/web-platform-tests/wpt>
+
+| Task | WPT source path(s) |
+|:---|:---|
+| `v2_idb_blob_value` | `IndexedDB/blob-valid-before-commit.htm` |
+| `v2_idb_compound_key` | `IndexedDB/keypath.htm`<br>`IndexedDB/keyorder.htm` |
+| `v2_idb_cursor_advance` | `IndexedDB/idbcursor_advance_objectstore.htm` |
+| `v2_idb_cursor_forward` | `IndexedDB/idbcursor_continue_objectstore.htm` |
+| `v2_idb_cursor_reverse` | `IndexedDB/idbcursor-direction-objectstore.htm` |
+| `v2_idb_getall_keys_count` | `IndexedDB/idbobjectstore_getAllKeys.html`<br>`IndexedDB/idbobjectstore_count.htm` |
+| `v2_idb_index_query` | `IndexedDB/idbindex_getAll.html` |
+| `v2_idb_index_range_count` | `IndexedDB/idbindex_count.htm`<br>`IndexedDB/idbindex_getAllKeys.html` |
+| `v2_idb_keyrange_bound` | `IndexedDB/idbkeyrange.htm` |
+| `v2_idb_keyrange_only_upper` | `IndexedDB/idbkeyrange.htm` |
+| `v2_idb_multientry_index` | `IndexedDB/idbindex-multientry-arraykeypath.htm` |
+| `v2_idb_multistore_atomic` | `IndexedDB/transaction-scope.html` |
+| `v2_idb_nested_keypath` | `IndexedDB/keypath.htm` |
+| `v2_idb_txn_abort_rollback` | `IndexedDB/transaction-abort.htm` |
+| `v2_idb_upgrade_migrate` | `IndexedDB/idbfactory_open9.htm`<br>`IndexedDB/idbversionchangeevent.htm` |
+| `v2_wpt_crypto_aesgcm_roundtrip` | `WebCryptoAPI/encrypt_decrypt/aes_gcm.https.any.js` |
+| `v2_wpt_crypto_digest_bytelength` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_crypto_getrandomvalues_shape` | `WebCryptoAPI/getRandomValues.any.js` |
+| `v2_wpt_crypto_hmac_roundtrip` | `WebCryptoAPI/sign_verify/hmac.https.any.js` |
+| `v2_wpt_crypto_hmac_tamper` | `WebCryptoAPI/sign_verify/hmac.https.any.js` |
+| `v2_wpt_crypto_sha1_abc` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_crypto_sha256_abc` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_crypto_sha256_empty` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_crypto_sha384_abc` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_crypto_sha512_abc` | `WebCryptoAPI/digest/digest.https.any.js` |
+| `v2_wpt_css_at_property` | `css/css-properties-values-api/at-property.html` |
+| `v2_wpt_css_cascade_important` | `css/css-cascade/important-vs-inline-001.html` |
+| `v2_wpt_css_constructable` | `css/cssom/CSSStyleSheet-constructable.html` |
+| `v2_wpt_css_focus_within` | `css/selectors/focus-within-001.html` |
+| `v2_wpt_css_has_forgiving` | `css/selectors/has-specificity.html` |
+| `v2_wpt_css_is_specificity` | `css/selectors/is-specificity.html` |
+| `v2_wpt_css_nth_child_of` | `css/selectors/nth-child-of-classname.html` |
+| `v2_wpt_css_property_inherits` | `css/css-properties-values-api/registered-properties-inheritance.html` |
+| `v2_wpt_css_register_syntax` | `css/css-properties-values-api/register-property-syntax-parsing.html` |
+| `v2_wpt_css_where_zero` | `css/selectors/is-where-basic.html` |
+| `v2_wpt_dom_abortsignal` | `dom/abort/event.any.js` |
+| `v2_wpt_dom_adoptnode` | `dom/nodes/Document-adoptNode.html`<br>`dom/nodes/Document-importNode.html` |
+| `v2_wpt_dom_clonenode` | `dom/nodes/Node-cloneNode.html` |
+| `v2_wpt_dom_domparser` | `domparsing/DOMParser-parseFromString-xml-doctype.html`<br>`domparsing/DOMParser-parseFromString-html.html` |
+| `v2_wpt_dom_event_order` | `dom/events/Event-dispatch-order.html` |
+| `v2_wpt_dom_event_stopprop` | `dom/events/Event-dispatch-propagation-stopped.html` |
+| `v2_wpt_dom_mo_attributes` | `dom/nodes/MutationObserver-attributes.html` |
+| `v2_wpt_dom_mo_chardata` | `dom/nodes/MutationObserver-characterData.html` |
+| `v2_wpt_dom_mo_childlist` | `dom/nodes/MutationObserver-childList.html` |
+| `v2_wpt_dom_nodeiterator` | `dom/traversal/NodeIterator.html` |
+| `v2_wpt_dom_range_extract` | `dom/ranges/Range-extractContents.html` |
+| `v2_wpt_dom_range_surround` | `dom/ranges/Range-surroundContents.html` |
+| `v2_wpt_dom_template_content` | `html/semantics/scripting-1/the-template-element/template-element/template-content.html` |
+| `v2_wpt_dom_treewalker_filter` | `dom/traversal/TreeWalker-acceptNode-filter.html` |
+| `v2_wpt_enc_bom_strip` | `encoding/textdecoder-byte-order-marks.any.js` |
+| `v2_wpt_enc_encode_into` | `encoding/encodeInto.any.js` |
+| `v2_wpt_enc_encoding_prop` | `encoding/api-basics.any.js` |
+| `v2_wpt_enc_fatal_throws` | `encoding/textdecoder-fatal.any.js` |
+| `v2_wpt_enc_labels` | `encoding/textdecoder-labels.any.js` |
+| `v2_wpt_enc_nonfatal_replacement` | `encoding/textdecoder-fatal.any.js` |
+| `v2_wpt_enc_stream_split` | `encoding/streams/decode-utf8.any.js`<br>`encoding/textdecoder-stream.any.js` |
+| `v2_wpt_enc_surrogate_replace` | `encoding/api-surrogates-utf8.any.js` |
+| `v2_wpt_enc_utf8_astral` | `encoding/api-basics.any.js` |
+| `v2_wpt_store_coerce_string` | `webstorage/storage_setitem.window.js` |
+| `v2_wpt_store_cookie_multiple` | `cookies/name/name.html`<br>`cookies/value/value.html` |
+| `v2_wpt_store_cookie_readwrite` | `cookies/value/value.html` |
+| `v2_wpt_store_event_fires` | `webstorage/event_basic.html`<br>`webstorage/event_local_newvalue.html` |
+| `v2_wpt_store_key_order` | `webstorage/storage_key.window.js` |
+| `v2_wpt_store_local_setget` | `webstorage/storage_setitem.window.js`<br>`webstorage/storage_removeitem.window.js`<br>`webstorage/storage_key.window.js` |
+| `v2_wpt_store_overwrite_length` | `webstorage/storage_setitem.window.js` |
+| `v2_wpt_store_removeitem_missing` | `webstorage/storage_removeitem.window.js` |
+| `v2_wpt_store_session_local_independent` | `webstorage/storage_getitem.window.js`<br>`webstorage/event_session_key.html` |
+| `v2_wpt_url_backslash` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_default_port_http` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_empty_query` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_idn_punycode` | `url/url-constructor.any.js`<br>`url/toascii.window.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_lowercase_host` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_nonspecial_opaque` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_pct_space_path` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_protocol_relative` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_rel_dot` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_rel_dotdot` | `url/url-constructor.any.js`<br>`url/resources/urltestdata.json` |
+| `v2_wpt_url_sp_getall` | `url/urlsearchparams-getall.any.js` |
+| `v2_wpt_url_sp_plus_space` | `url/urlsearchparams-constructor.any.js` |
+| `v2_wpt_url_sp_set_replace` | `url/urlsearchparams-set.any.js` |
+| `v2_wpt_url_sp_sort` | `url/urlsearchparams-sort.any.js` |
+
+### WPT license (BSD-3-Clause)
+
+Copyright © web-platform-tests contributors
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+3. Neither the name of the copyright holder nor the names of its contributors may
+   be used to endorse or promote products derived from this software without
+   specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+OF THE POSSIBILITY OF SUCH DAMAGE.
+
+## Chromium inspector-protocol tests
+
+Upstream: <https://chromium.googlesource.com/chromium/src/>
+
+| Upstream area | Associated task IDs |
+|:---|:---|
+| `chromium inspector-protocol accessibility/` | `v2_ax_aria_hidden_ignored`<br>`v2_ax_checkbox_checked_state`<br>`v2_ax_control_disabled_state`<br>`v2_ax_depth_truncation`<br>`v2_ax_enable_disable_idempotent`<br>`v2_ax_heading_level_property`<br>`v2_ax_iframe_frameid_scope`<br>`v2_ax_name_arialabel_priority`<br>`v2_ax_name_from_label_association`<br>`v2_ax_query_by_name`<br>`v2_ax_query_by_role`<br>`v2_ax_role_name_value_triples` |
+| `chromium inspector-protocol input/` | `v2_act_dispatchkey_listener`<br>`v2_act_inserttext_value` |
+| `chromium inspector-protocol runtime/` | `v2_act_binding_execution_context`<br>`v2_act_binding_roundtrip`<br>`v2_act_callfn_arguments`<br>`v2_act_callfn_await_promise`<br>`v2_act_callfn_element_click`<br>`v2_act_callfn_exception`<br>`v2_act_callfn_return_by_value`<br>`v2_act_getprops_accessor`<br>`v2_act_getprops_own`<br>`v2_act_release_object`<br>`v2_act_release_object_group` |
+| `chromium test/inspector-protocol/fetch/` | `v2_fetch_continue_request_modify_headers`<br>`v2_fetch_continue_request_modify_url`<br>`v2_fetch_continue_with_auth_probe`<br>`v2_fetch_disable_stops_pausing`<br>`v2_fetch_enable_no_patterns`<br>`v2_fetch_enable_patterns_continue`<br>`v2_fetch_fail_request`<br>`v2_fetch_fail_request_alt_reason`<br>`v2_fetch_fulfill_custom_response`<br>`v2_fetch_fulfill_json`<br>`v2_fetch_fulfill_status_override_404`<br>`v2_fetch_load_network_resource`<br>`v2_fetch_network_get_response_body`<br>`v2_fetch_network_relative_ordering`<br>`v2_fetch_request_paused_request_stage_fields`<br>`v2_fetch_response_stage_take_stream`<br>`v2_ifx_block_resource_fallback`<br>`v2_ifx_header_rewrite_client`<br>`v2_ifx_json_field_inject`<br>`v2_ifx_mock_api_rewrite`<br>`v2_ifx_multi_intercept`<br>`v2_ifx_request_rewrite_url`<br>`v2_ifx_response_body_tamper`<br>`v2_ifx_status_override_branch` |
+
+### Chromium license (BSD-3-Clause)
+
+Copyright 2015 The Chromium Authors
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+3. Neither the name of Google LLC nor the names of its contributors may be used
+   to endorse or promote products derived from this software without specific
+   prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+OF THE POSSIBILITY OF SUCH DAMAGE.

definitions/config/browser_driver_bindings.json

@@ -0,0 +1,1848 @@
+{
+  "schema_version": 1,
+  "browser_ids": [
+    "chrome",
+    "moli",
+    "lightpanda",
+    "obscura"
+  ],
+  "driver_ids": [
+    "playwright",
+    "puppeteer",
+    "chrome_remote_interface",
+    "cdp_use",
+    "pydoll",
+    "stagehand",
+    "chrome_devtools_mcp",
+    "chromedp",
+    "rod",
+    "agent_browser",
+    "ferrum",
+    "selenium",
+    "chromiumoxide"
+  ],
+  "references": [
+    {
+      "ref_id": "browser.chrome",
+      "source": "runner.run.ENGINE_DEFS",
+      "key": "chrome"
+    },
+    {
+      "ref_id": "browser.moli",
+      "source": "runner.run.ENGINE_DEFS",
+      "key": "moli"
+    },
+    {
+      "ref_id": "browser.lightpanda",
+      "source": "runner.run.ENGINE_DEFS",
+      "key": "lightpanda"
+    },
+    {
+      "ref_id": "browser.obscura",
+      "source": "runner.run.ENGINE_DEFS",
+      "key": "obscura"
+    },
+    {
+      "ref_id": "driver.playwright",
+      "source": "harness_pins.json.drivers",
+      "key": "playwright-core"
+    },
+    {
+      "ref_id": "driver.puppeteer",
+      "source": "harness_pins.json.drivers",
+      "key": "puppeteer-core"
+    },
+    {
+      "ref_id": "driver.chrome_remote_interface",
+      "source": "harness_pins.json.drivers",
+      "key": "chrome-remote-interface"
+    },
+    {
+      "ref_id": "driver.cdp_use",
+      "source": "harness_pins.json.drivers",
+      "key": "cdp-use"
+    },
+    {
+      "ref_id": "driver.pydoll",
+      "source": "harness_pins.json.drivers",
+      "key": "pydoll-python"
+    },
+    {
+      "ref_id": "driver.stagehand",
+      "source": "harness_pins.json.drivers",
+      "key": "stagehand"
+    },
+    {
+      "ref_id": "driver.chrome_devtools_mcp",
+      "source": "harness_pins.json.drivers",
+      "key": "chrome-devtools-mcp"
+    },
+    {
+      "ref_id": "driver.chromedp",
+      "source": "harness_pins.json.drivers",
+      "key": "chromedp"
+    },
+    {
+      "ref_id": "driver.rod",
+      "source": "harness_pins.json.drivers",
+      "key": "rod"
+    },
+    {
+      "ref_id": "driver.agent_browser",
+      "source": "harness_pins.json.drivers",
+      "key": "agent-browser"
+    },
+    {
+      "ref_id": "driver.ferrum",
+      "source": "harness_pins.json.drivers",
+      "key": "ferrum"
+    },
+    {
+      "ref_id": "driver.selenium",
+      "source": "harness_pins.json.drivers",
+      "key": "selenium"
+    },
+    {
+      "ref_id": "driver.chromiumoxide",
+      "source": "harness_pins.json.drivers",
+      "key": "chromiumoxide"
+    },
+    {
+      "ref_id": "bridge.chrome_devtools_mcp",
+      "source": "harness_pins.json.drivers",
+      "key": "chrome-devtools-mcp"
+    },
+    {
+      "ref_id": "bridge.agent_browser_daemon",
+      "source": "harness_pins.json.drivers",
+      "key": "agent-browser"
+    },
+    {
+      "ref_id": "bridge.chromedriver",
+      "source": "harness_pins.json.drivers",
+      "key": "chromedriver"
+    }
+  ],
+  "routes": [
+    {
+      "route_id": "playwright_cdp",
+      "client_protocol": "playwright_api_over_cdp",
+      "client_endpoint_kind": "cdp_browser_websocket",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "connect_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "framework_probe",
+          "to": "playwright_core",
+          "protocol": "playwright_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "playwright_core",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "direct_input",
+          "endpoint_kind": "cdp_browser_websocket",
+          "probe": "driver connect plus live identity assertion",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "cdp",
+            "actual_path": "Browser.getVersion.product",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always",
+            "fallback_actual_path": "framework.browser.version",
+            "fallback_operator": "is_contained_by"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "puppeteer_cdp",
+      "client_protocol": "puppeteer_api_over_cdp",
+      "client_endpoint_kind": "cdp_browser_websocket",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "connect_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "framework_probe",
+          "to": "puppeteer_core",
+          "protocol": "puppeteer_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "puppeteer_core",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "direct_input",
+          "endpoint_kind": "cdp_browser_websocket",
+          "probe": "driver connect plus live identity assertion",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "framework",
+            "actual_path": "browser.version",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "chrome_remote_interface_cdp",
+      "client_protocol": "cdp",
+      "client_endpoint_kind": "cdp_browser_websocket",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "attach_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "chrome_remote_interface",
+          "protocol": "library_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "chrome_remote_interface",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "direct_input",
+          "endpoint_kind": "cdp_browser_websocket",
+          "probe": "driver connect plus live identity assertion",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "cdp",
+            "actual_path": "Browser.getVersion.product",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "cdp_use_cdp",
+      "client_protocol": "cdp",
+      "client_endpoint_kind": "cdp_browser_websocket",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "attach_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "cdp_use",
+          "protocol": "library_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "cdp_use",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "direct_input",
+          "endpoint_kind": "cdp_browser_websocket",
+          "probe": "driver connect plus live identity assertion",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "cdp",
+            "actual_path": "Browser.getVersion.product",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "pydoll_cdp",
+      "client_protocol": "pydoll_api_over_cdp",
+      "client_endpoint_kind": "cdp_browser_websocket",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "attach_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "pydoll",
+          "protocol": "pydoll_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "pydoll",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "direct_input",
+          "endpoint_kind": "cdp_browser_websocket",
+          "probe": "driver connect plus live identity assertion",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "cdp",
+            "actual_path": "browser.get_version.product",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "pydoll_obscura_cdp",
+      "client_protocol": "pydoll_api_over_cdp",
+      "client_endpoint_kind": "cdp_browser_websocket",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "attach_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "pydoll",
+          "protocol": "pydoll_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "pydoll",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "direct_input",
+          "endpoint_kind": "cdp_browser_websocket",
+          "probe": "Pydoll 2.23.1 connection handler then Target.createTarget and Target.attachToTarget(flatten=true)",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "cdp",
+            "actual_path": "browser.get_version.product",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "stagehand_cdp",
+      "client_protocol": "stagehand_deterministic_api_over_cdp",
+      "client_endpoint_kind": "cdp_browser_websocket",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "connect_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "stagehand_v3",
+          "protocol": "stagehand_deterministic_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "stagehand_v3",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "direct_input",
+          "endpoint_kind": "cdp_browser_websocket",
+          "probe": "driver connect plus live identity assertion",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "cdp",
+            "actual_path": "stagehand.page.sendCDP.Browser.getVersion.product",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always",
+            "fallback_actual_path": "stagehand.root_connection.Browser.getVersion.product",
+            "fallback_operator": "equals"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "chrome_devtools_mcp_cdp",
+      "client_protocol": "mcp_jsonrpc",
+      "client_endpoint_kind": "mcp_stdio",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "connect_existing",
+      "provider": "driver_managed_bridge",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "chrome_devtools_mcp_server",
+          "protocol": "mcp_jsonrpc",
+          "transport": "stdio",
+          "endpoint_kind": "mcp_stdio"
+        },
+        {
+          "from": "chrome_devtools_mcp_server",
+          "to": "chrome_devtools_mcp_bundled_puppeteer_core",
+          "protocol": "puppeteer_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "chrome_devtools_mcp_bundled_puppeteer_core",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "adapter_per_attempt_child",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "mcp_initialize",
+          "endpoint_kind": "mcp_stdio",
+          "probe": "spawn --wsEndpoint then MCP initialize over stdio",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "mcp",
+            "actual_path": "evaluate_script.navigator.userAgent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "chromedp_cdp",
+      "client_protocol": "chromedp_api_over_cdp",
+      "client_endpoint_kind": "cdp_browser_websocket",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "attach_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "chromedp",
+          "protocol": "chromedp_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "chromedp",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "direct_input",
+          "endpoint_kind": "cdp_browser_websocket",
+          "probe": "driver connect plus live identity assertion",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "cdp",
+            "actual_path": "browser.GetVersion.product",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "rod_cdp",
+      "client_protocol": "rod_api_over_cdp",
+      "client_endpoint_kind": "cdp_browser_websocket",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "attach_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "rod",
+          "protocol": "rod_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "rod",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "direct_input",
+          "endpoint_kind": "cdp_browser_websocket",
+          "probe": "driver connect plus live identity assertion",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "cdp",
+            "actual_path": "browser.Version.Product",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "agent_browser_cdp",
+      "client_protocol": "agent_browser_cli",
+      "client_endpoint_kind": "isolated_daemon_session",
+      "browser_endpoint_kind": "cdp_http_port",
+      "connect_mode": "attach_existing",
+      "provider": "driver_managed_session",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "agent_browser_cli_daemon",
+          "protocol": "agent_browser_cli",
+          "transport": "subprocess_and_local_socket",
+          "endpoint_kind": "isolated_daemon_session"
+        },
+        {
+          "from": "agent_browser_cli_daemon",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "connect_command_with_http_port",
+          "endpoint_kind": "cdp_http_port"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "adapter_per_attempt_session",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "agent_browser_connect",
+          "endpoint_kind": "isolated_daemon_session",
+          "probe": "agent-browser connect {cdp_port} in isolated session",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+      "live_transport_assertions": [
+        {
+          "mechanism": "agent_browser",
+          "actual_path": "get.cdp_url",
+          "operator": "equals",
+          "expected_ref": "browser_ws",
+          "condition": "always"
+        }
+      ]
+      }
+    },
+    {
+      "route_id": "ferrum_cdp",
+      "client_protocol": "ferrum_api_over_cdp",
+      "client_endpoint_kind": "cdp_browser_websocket",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "attach_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "ferrum",
+          "protocol": "ferrum_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "ferrum",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "direct_input",
+          "endpoint_kind": "cdp_browser_websocket",
+          "probe": "driver connect plus live identity assertion",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "cdp",
+            "actual_path": "Browser.getVersion.product",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "chromiumoxide_cdp",
+      "client_protocol": "chromiumoxide_api_over_cdp",
+      "client_endpoint_kind": "cdp_browser_websocket",
+      "browser_endpoint_kind": "cdp_browser_websocket",
+      "connect_mode": "attach_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "chromiumoxide",
+          "protocol": "chromiumoxide_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "chromiumoxide",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "websocket",
+          "endpoint_kind": "cdp_browser_websocket"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "direct_input",
+          "endpoint_kind": "cdp_browser_websocket",
+          "probe": "driver connect plus live identity assertion",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "cdp",
+            "actual_path": "browser.version.product",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "native_webdriver",
+      "client_protocol": "webdriver_classic",
+      "client_endpoint_kind": "webdriver_classic_http",
+      "browser_endpoint_kind": "webdriver_classic_http",
+      "connect_mode": "connect_existing",
+      "provider": "browser_native",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "selenium_client",
+          "protocol": "selenium_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "selenium_client",
+          "to": "browser",
+          "protocol": "webdriver_classic",
+          "transport": "http",
+          "endpoint_kind": "webdriver_classic_http"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "none",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "webdriver_session",
+          "endpoint_kind": "webdriver_classic_http",
+          "probe": "POST /session and validate returned capabilities",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "webdriver_capabilities",
+            "actual_path": "capabilities.browserName",
+            "operator": "equals",
+            "expected_literal": "moli",
+            "condition": "always"
+          },
+          {
+            "mechanism": "webdriver_capabilities",
+            "actual_path": "capabilities.browserVersion",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always"
+          }
+        ]
+      }
+    },
+    {
+      "route_id": "chromedriver_cdp",
+      "client_protocol": "webdriver_classic",
+      "client_endpoint_kind": "chromedriver_http",
+      "browser_endpoint_kind": "cdp_http_port",
+      "connect_mode": "attach_existing",
+      "provider": "chromedriver",
+      "ordered_hops": [
+        {
+          "from": "scenario_adapter",
+          "to": "selenium_client",
+          "protocol": "selenium_api",
+          "transport": "in_process",
+          "endpoint_kind": "library_api"
+        },
+        {
+          "from": "selenium_client",
+          "to": "chromedriver",
+          "protocol": "webdriver_classic",
+          "transport": "http",
+          "endpoint_kind": "chromedriver_http"
+        },
+        {
+          "from": "chromedriver",
+          "to": "browser",
+          "protocol": "cdp",
+          "transport": "debugger_address",
+          "endpoint_kind": "cdp_http_port"
+        }
+      ],
+      "lifecycle": {
+        "browser_owner": "runner_browser_manager",
+        "bridge_owner": "adapter_per_attempt_child",
+        "adapter_owner": "runner_per_attempt_subprocess"
+      },
+      "discovery": {
+        "browser": {
+          "kind": "http_json_version",
+          "endpoint_kind": "cdp_http_discovery",
+          "probe": "GET /json/version",
+          "readiness_owner": "runner_browser_manager"
+        },
+        "client": {
+          "kind": "chromedriver_service",
+          "endpoint_kind": "chromedriver_http",
+          "probe": "start Selenium Service on temporary port then POST /session",
+          "readiness_owner": "adapter_per_attempt"
+        }
+      },
+      "identity": {
+        "http_assertions": [
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "Browser|Product",
+            "operator": "equals",
+            "expected_ref": "expect_product",
+            "condition": "always"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "User-Agent",
+            "operator": "equals",
+            "expected_ref": "expect_ua",
+            "condition": "expected_nonempty"
+          },
+          {
+            "mechanism": "http_json_version",
+            "actual_path": "webSocketDebuggerUrl",
+            "operator": "equals",
+            "expected_ref": "browser_ws",
+            "condition": "when_present"
+          }
+        ],
+        "live_transport_assertions": [
+          {
+            "mechanism": "selenium_cdp_extension",
+            "actual_path": "execute_cdp_cmd.Browser.getVersion.product",
+            "operator": "equals",
+            "expected_ref": "expect_product_live",
+            "condition": "always"
+          }
+        ]
+      }
+    }
+  ],
+  "bindings": [
+    {
+      "binding_id": "chrome__playwright",
+      "browser_id": "chrome",
+      "driver_id": "playwright",
+      "route_ref": "playwright_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.playwright",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__puppeteer",
+      "browser_id": "chrome",
+      "driver_id": "puppeteer",
+      "route_ref": "puppeteer_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.puppeteer",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__chrome_remote_interface",
+      "browser_id": "chrome",
+      "driver_id": "chrome_remote_interface",
+      "route_ref": "chrome_remote_interface_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.chrome_remote_interface",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__cdp_use",
+      "browser_id": "chrome",
+      "driver_id": "cdp_use",
+      "route_ref": "cdp_use_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.cdp_use",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__pydoll",
+      "browser_id": "chrome",
+      "driver_id": "pydoll",
+      "route_ref": "pydoll_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.pydoll",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__stagehand",
+      "browser_id": "chrome",
+      "driver_id": "stagehand",
+      "route_ref": "stagehand_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.stagehand",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__chrome_devtools_mcp",
+      "browser_id": "chrome",
+      "driver_id": "chrome_devtools_mcp",
+      "route_ref": "chrome_devtools_mcp_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.chrome_devtools_mcp",
+      "bridge_pin_refs": [
+        "bridge.chrome_devtools_mcp"
+      ],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__chromedp",
+      "browser_id": "chrome",
+      "driver_id": "chromedp",
+      "route_ref": "chromedp_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.chromedp",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__rod",
+      "browser_id": "chrome",
+      "driver_id": "rod",
+      "route_ref": "rod_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.rod",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__agent_browser",
+      "browser_id": "chrome",
+      "driver_id": "agent_browser",
+      "route_ref": "agent_browser_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.agent_browser",
+      "bridge_pin_refs": [
+        "bridge.agent_browser_daemon"
+      ],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__ferrum",
+      "browser_id": "chrome",
+      "driver_id": "ferrum",
+      "route_ref": "ferrum_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.ferrum",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__selenium",
+      "browser_id": "chrome",
+      "driver_id": "selenium",
+      "route_ref": "chromedriver_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.selenium",
+      "bridge_pin_refs": [
+        "bridge.chromedriver"
+      ],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "chrome__chromiumoxide",
+      "browser_id": "chrome",
+      "driver_id": "chromiumoxide",
+      "route_ref": "chromiumoxide_cdp",
+      "browser_pin_ref": "browser.chrome",
+      "driver_pin_ref": "driver.chromiumoxide",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__playwright",
+      "browser_id": "moli",
+      "driver_id": "playwright",
+      "route_ref": "playwright_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.playwright",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__puppeteer",
+      "browser_id": "moli",
+      "driver_id": "puppeteer",
+      "route_ref": "puppeteer_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.puppeteer",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__chrome_remote_interface",
+      "browser_id": "moli",
+      "driver_id": "chrome_remote_interface",
+      "route_ref": "chrome_remote_interface_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.chrome_remote_interface",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__cdp_use",
+      "browser_id": "moli",
+      "driver_id": "cdp_use",
+      "route_ref": "cdp_use_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.cdp_use",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__pydoll",
+      "browser_id": "moli",
+      "driver_id": "pydoll",
+      "route_ref": "pydoll_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.pydoll",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__stagehand",
+      "browser_id": "moli",
+      "driver_id": "stagehand",
+      "route_ref": "stagehand_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.stagehand",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__chrome_devtools_mcp",
+      "browser_id": "moli",
+      "driver_id": "chrome_devtools_mcp",
+      "route_ref": "chrome_devtools_mcp_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.chrome_devtools_mcp",
+      "bridge_pin_refs": [
+        "bridge.chrome_devtools_mcp"
+      ],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__chromedp",
+      "browser_id": "moli",
+      "driver_id": "chromedp",
+      "route_ref": "chromedp_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.chromedp",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__rod",
+      "browser_id": "moli",
+      "driver_id": "rod",
+      "route_ref": "rod_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.rod",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__agent_browser",
+      "browser_id": "moli",
+      "driver_id": "agent_browser",
+      "route_ref": "agent_browser_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.agent_browser",
+      "bridge_pin_refs": [
+        "bridge.agent_browser_daemon"
+      ],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__ferrum",
+      "browser_id": "moli",
+      "driver_id": "ferrum",
+      "route_ref": "ferrum_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.ferrum",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__selenium",
+      "browser_id": "moli",
+      "driver_id": "selenium",
+      "route_ref": "native_webdriver",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.selenium",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "moli__chromiumoxide",
+      "browser_id": "moli",
+      "driver_id": "chromiumoxide",
+      "route_ref": "chromiumoxide_cdp",
+      "browser_pin_ref": "browser.moli",
+      "driver_pin_ref": "driver.chromiumoxide",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__playwright",
+      "browser_id": "lightpanda",
+      "driver_id": "playwright",
+      "route_ref": "playwright_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.playwright",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__puppeteer",
+      "browser_id": "lightpanda",
+      "driver_id": "puppeteer",
+      "route_ref": "puppeteer_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.puppeteer",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__chrome_remote_interface",
+      "browser_id": "lightpanda",
+      "driver_id": "chrome_remote_interface",
+      "route_ref": "chrome_remote_interface_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.chrome_remote_interface",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__cdp_use",
+      "browser_id": "lightpanda",
+      "driver_id": "cdp_use",
+      "route_ref": "cdp_use_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.cdp_use",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__pydoll",
+      "browser_id": "lightpanda",
+      "driver_id": "pydoll",
+      "route_ref": "pydoll_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.pydoll",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__stagehand",
+      "browser_id": "lightpanda",
+      "driver_id": "stagehand",
+      "route_ref": "stagehand_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.stagehand",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__chrome_devtools_mcp",
+      "browser_id": "lightpanda",
+      "driver_id": "chrome_devtools_mcp",
+      "route_ref": "chrome_devtools_mcp_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.chrome_devtools_mcp",
+      "bridge_pin_refs": [
+        "bridge.chrome_devtools_mcp"
+      ],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__chromedp",
+      "browser_id": "lightpanda",
+      "driver_id": "chromedp",
+      "route_ref": "chromedp_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.chromedp",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__rod",
+      "browser_id": "lightpanda",
+      "driver_id": "rod",
+      "route_ref": "rod_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.rod",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__agent_browser",
+      "browser_id": "lightpanda",
+      "driver_id": "agent_browser",
+      "route_ref": "agent_browser_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.agent_browser",
+      "bridge_pin_refs": [
+        "bridge.agent_browser_daemon"
+      ],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__ferrum",
+      "browser_id": "lightpanda",
+      "driver_id": "ferrum",
+      "route_ref": "ferrum_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.ferrum",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__selenium",
+      "browser_id": "lightpanda",
+      "driver_id": "selenium",
+      "route_ref": "chromedriver_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.selenium",
+      "bridge_pin_refs": [
+        "bridge.chromedriver"
+      ],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "lightpanda__chromiumoxide",
+      "browser_id": "lightpanda",
+      "driver_id": "chromiumoxide",
+      "route_ref": "chromiumoxide_cdp",
+      "browser_pin_ref": "browser.lightpanda",
+      "driver_pin_ref": "driver.chromiumoxide",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__playwright",
+      "browser_id": "obscura",
+      "driver_id": "playwright",
+      "route_ref": "playwright_cdp",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.playwright",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__puppeteer",
+      "browser_id": "obscura",
+      "driver_id": "puppeteer",
+      "route_ref": "puppeteer_cdp",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.puppeteer",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__chrome_remote_interface",
+      "browser_id": "obscura",
+      "driver_id": "chrome_remote_interface",
+      "route_ref": "chrome_remote_interface_cdp",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.chrome_remote_interface",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__cdp_use",
+      "browser_id": "obscura",
+      "driver_id": "cdp_use",
+      "route_ref": "cdp_use_cdp",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.cdp_use",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__pydoll",
+      "browser_id": "obscura",
+      "driver_id": "pydoll",
+      "route_ref": "pydoll_obscura_cdp",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.pydoll",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__stagehand",
+      "browser_id": "obscura",
+      "driver_id": "stagehand",
+      "route_ref": "stagehand_cdp",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.stagehand",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__chrome_devtools_mcp",
+      "browser_id": "obscura",
+      "driver_id": "chrome_devtools_mcp",
+      "unavailable_reason": "Obscura v0.1.11 lacks the Puppeteer-compatible auto-attach, navigation lifecycle, and execution-context semantics required by chrome-devtools-mcp 1.6.0",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.chrome_devtools_mcp",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__chromedp",
+      "browser_id": "obscura",
+      "driver_id": "chromedp",
+      "route_ref": "chromedp_cdp",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.chromedp",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__rod",
+      "browser_id": "obscura",
+      "driver_id": "rod",
+      "route_ref": "rod_cdp",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.rod",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__agent_browser",
+      "browser_id": "obscura",
+      "driver_id": "agent_browser",
+      "route_ref": "agent_browser_cdp",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.agent_browser",
+      "bridge_pin_refs": [
+        "bridge.agent_browser_daemon"
+      ],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__ferrum",
+      "browser_id": "obscura",
+      "driver_id": "ferrum",
+      "route_ref": "ferrum_cdp",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.ferrum",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__selenium",
+      "browser_id": "obscura",
+      "driver_id": "selenium",
+      "unavailable_reason": "Obscura v0.1.11 has no WebDriver server and ChromeDriver cannot complete its CDP session because discovery metadata, target lifecycle, and WebDriver deep serialization are incompatible",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.selenium",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    },
+    {
+      "binding_id": "obscura__chromiumoxide",
+      "browser_id": "obscura",
+      "driver_id": "chromiumoxide",
+      "route_ref": "chromiumoxide_cdp",
+      "browser_pin_ref": "browser.obscura",
+      "driver_pin_ref": "driver.chromiumoxide",
+      "bridge_pin_refs": [],
+      "fallback_allowed": false
+    }
+  ]
+}

definitions/config/browser_driver_bindings.schema.json

@@ -0,0 +1,512 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://github.com/lexmount/Lexbench-Headless-Browser/config/browser_driver_bindings.schema.json",
+  "title": "Agent Browser Bench browser/driver binding catalog",
+  "type": "object",
+  "additionalProperties": false,
+  "required": [
+    "schema_version",
+    "browser_ids",
+    "driver_ids",
+    "references",
+    "routes",
+    "bindings"
+  ],
+  "properties": {
+    "schema_version": {
+      "const": 1
+    },
+    "browser_ids": {
+      "const": [
+        "chrome",
+        "moli",
+        "lightpanda",
+        "obscura"
+      ]
+    },
+    "driver_ids": {
+      "const": [
+        "playwright",
+        "puppeteer",
+        "chrome_remote_interface",
+        "cdp_use",
+        "pydoll",
+        "stagehand",
+        "chrome_devtools_mcp",
+        "chromedp",
+        "rod",
+        "agent_browser",
+        "ferrum",
+        "selenium",
+        "chromiumoxide"
+      ]
+    },
+    "references": {
+      "type": "array",
+      "items": {
+        "$ref": "#/$defs/reference"
+      }
+    },
+    "routes": {
+      "type": "array",
+      "items": {
+        "$ref": "#/$defs/route"
+      }
+    },
+    "bindings": {
+      "type": "array",
+      "minItems": 52,
+      "maxItems": 52,
+      "items": {
+        "$ref": "#/$defs/binding"
+      }
+    }
+  },
+  "$defs": {
+    "nonEmptyString": {
+      "type": "string",
+      "minLength": 1
+    },
+    "reference": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "ref_id",
+        "source",
+        "key"
+      ],
+      "properties": {
+        "ref_id": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "source": {
+          "enum": [
+            "runner.run.ENGINE_DEFS",
+            "harness_pins.json.drivers"
+          ]
+        },
+        "key": {
+          "$ref": "#/$defs/nonEmptyString"
+        }
+      }
+    },
+    "hop": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "from",
+        "to",
+        "protocol",
+        "transport",
+        "endpoint_kind"
+      ],
+      "properties": {
+        "from": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "to": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "protocol": {
+          "enum": [
+            "playwright_api",
+            "puppeteer_api",
+            "library_api",
+            "pydoll_api",
+            "stagehand_deterministic_api",
+            "mcp_jsonrpc",
+            "cdp",
+            "chromedp_api",
+            "rod_api",
+            "agent_browser_cli",
+            "ferrum_api",
+            "chromiumoxide_api",
+            "selenium_api",
+            "webdriver_classic"
+          ]
+        },
+        "transport": {
+          "enum": [
+            "in_process",
+            "websocket",
+            "stdio",
+            "subprocess_and_local_socket",
+            "connect_command_with_http_port",
+            "http",
+            "debugger_address"
+          ]
+        },
+        "endpoint_kind": {
+          "enum": [
+            "library_api",
+            "cdp_http_discovery",
+            "cdp_browser_websocket",
+            "mcp_stdio",
+            "isolated_daemon_session",
+            "cdp_http_port",
+            "webdriver_classic_http",
+            "chromedriver_http"
+          ]
+        }
+      }
+    },
+    "lifecycle": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "browser_owner",
+        "bridge_owner",
+        "adapter_owner"
+      ],
+      "properties": {
+        "browser_owner": {
+          "const": "runner_browser_manager"
+        },
+        "bridge_owner": {
+          "enum": [
+            "none",
+            "adapter_per_attempt_child",
+            "adapter_per_attempt_session"
+          ]
+        },
+        "adapter_owner": {
+          "const": "runner_per_attempt_subprocess"
+        }
+      }
+    },
+    "discoveryPoint": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "kind",
+        "endpoint_kind",
+        "probe",
+        "readiness_owner"
+      ],
+      "properties": {
+        "kind": {
+          "enum": [
+            "http_json_version",
+            "direct_input",
+            "mcp_initialize",
+            "agent_browser_connect",
+            "chromedriver_service",
+            "webdriver_session"
+          ]
+        },
+        "endpoint_kind": {
+          "enum": [
+            "cdp_http_discovery",
+            "cdp_browser_websocket",
+            "mcp_stdio",
+            "isolated_daemon_session",
+            "webdriver_classic_http",
+            "chromedriver_http"
+          ]
+        },
+        "probe": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "readiness_owner": {
+          "enum": [
+            "runner_browser_manager",
+            "adapter_per_attempt"
+          ]
+        }
+      }
+    },
+    "discovery": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "browser",
+        "client"
+      ],
+      "properties": {
+        "browser": {
+          "$ref": "#/$defs/discoveryPoint"
+        },
+        "client": {
+          "$ref": "#/$defs/discoveryPoint"
+        }
+      }
+    },
+    "assertion": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "mechanism",
+        "actual_path",
+        "operator",
+        "condition"
+      ],
+      "properties": {
+        "mechanism": {
+          "enum": [
+            "http_json_version",
+            "cdp",
+            "framework",
+            "mcp",
+            "agent_browser",
+            "webdriver_capabilities",
+            "selenium_cdp_extension"
+          ]
+        },
+        "actual_path": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "operator": {
+          "enum": [
+            "equals",
+            "contains",
+            "is_contained_by"
+          ]
+        },
+        "expected_ref": {
+          "enum": [
+            "expect_product",
+            "expect_ua",
+            "browser_ws",
+            "expect_product_live"
+          ]
+        },
+        "expected_literal": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "condition": {
+          "enum": [
+            "always",
+            "expected_nonempty",
+            "when_present"
+          ]
+        },
+        "fallback_actual_path": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "fallback_operator": {
+          "enum": [
+            "equals",
+            "contains",
+            "is_contained_by"
+          ]
+        }
+      },
+      "oneOf": [
+        {
+          "required": [
+            "expected_ref"
+          ],
+          "not": {
+            "required": [
+              "expected_literal"
+            ]
+          }
+        },
+        {
+          "required": [
+            "expected_literal"
+          ],
+          "not": {
+            "required": [
+              "expected_ref"
+            ]
+          }
+        }
+      ]
+    },
+    "identity": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "http_assertions",
+        "live_transport_assertions"
+      ],
+      "properties": {
+        "http_assertions": {
+          "type": "array",
+          "minItems": 1,
+          "items": {
+            "$ref": "#/$defs/assertion"
+          }
+        },
+        "live_transport_assertions": {
+          "type": "array",
+          "minItems": 1,
+          "items": {
+            "$ref": "#/$defs/assertion"
+          }
+        }
+      }
+    },
+    "route": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "route_id",
+        "client_protocol",
+        "client_endpoint_kind",
+        "browser_endpoint_kind",
+        "connect_mode",
+        "provider",
+        "ordered_hops",
+        "lifecycle",
+        "discovery",
+        "identity"
+      ],
+      "properties": {
+        "route_id": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "client_protocol": {
+          "enum": [
+            "playwright_api_over_cdp",
+            "puppeteer_api_over_cdp",
+            "cdp",
+            "pydoll_api_over_cdp",
+            "stagehand_deterministic_api_over_cdp",
+            "mcp_jsonrpc",
+            "chromedp_api_over_cdp",
+            "rod_api_over_cdp",
+            "agent_browser_cli",
+            "ferrum_api_over_cdp",
+            "chromiumoxide_api_over_cdp",
+            "webdriver_classic"
+          ]
+        },
+        "client_endpoint_kind": {
+          "enum": [
+            "cdp_browser_websocket",
+            "mcp_stdio",
+            "isolated_daemon_session",
+            "webdriver_classic_http",
+            "chromedriver_http"
+          ]
+        },
+        "browser_endpoint_kind": {
+          "enum": [
+            "cdp_browser_websocket",
+            "cdp_http_port",
+            "webdriver_classic_http"
+          ]
+        },
+        "connect_mode": {
+          "enum": [
+            "connect_existing",
+            "attach_existing"
+          ]
+        },
+        "provider": {
+          "enum": [
+            "browser_native",
+            "driver_managed_bridge",
+            "driver_managed_session",
+            "chromedriver"
+          ]
+        },
+        "ordered_hops": {
+          "type": "array",
+          "minItems": 1,
+          "items": {
+            "$ref": "#/$defs/hop"
+          }
+        },
+        "lifecycle": {
+          "$ref": "#/$defs/lifecycle"
+        },
+        "discovery": {
+          "$ref": "#/$defs/discovery"
+        },
+        "identity": {
+          "$ref": "#/$defs/identity"
+        }
+      }
+    },
+    "binding": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "binding_id",
+        "browser_id",
+        "driver_id",
+        "browser_pin_ref",
+        "driver_pin_ref",
+        "bridge_pin_refs",
+        "fallback_allowed"
+      ],
+      "properties": {
+        "binding_id": {
+          "type": "string",
+          "pattern": "^(chrome|moli|lightpanda|obscura)__(playwright|puppeteer|chrome_remote_interface|cdp_use|pydoll|stagehand|chrome_devtools_mcp|chromedp|rod|agent_browser|ferrum|selenium|chromiumoxide)$"
+        },
+        "browser_id": {
+          "enum": [
+            "chrome",
+            "moli",
+            "lightpanda",
+            "obscura"
+          ]
+        },
+        "driver_id": {
+          "enum": [
+            "playwright",
+            "puppeteer",
+            "chrome_remote_interface",
+            "cdp_use",
+            "pydoll",
+            "stagehand",
+            "chrome_devtools_mcp",
+            "chromedp",
+            "rod",
+            "agent_browser",
+            "ferrum",
+            "selenium",
+            "chromiumoxide"
+          ]
+        },
+        "route_ref": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "unavailable_reason": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "browser_pin_ref": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "driver_pin_ref": {
+          "$ref": "#/$defs/nonEmptyString"
+        },
+        "bridge_pin_refs": {
+          "type": "array",
+          "items": {
+            "$ref": "#/$defs/nonEmptyString"
+          }
+        },
+        "fallback_allowed": {
+          "const": false
+        }
+      },
+      "oneOf": [
+        {
+          "required": [
+            "route_ref"
+          ],
+          "not": {
+            "required": [
+              "unavailable_reason"
+            ]
+          }
+        },
+        {
+          "required": [
+            "unavailable_reason"
+          ],
+          "not": {
+            "required": [
+              "route_ref"
+            ]
+          }
+        }
+      ]
+    }
+  }
+}

definitions/config/cdp_waivers.json

@@ -0,0 +1,73 @@
+{
+  "_comment": "CDP coverage waiver ledger. Each entry excuses one stable protocol member from the `gap` count with an auditable, self-contained reason. `python3 -m runner.run coverage --check` requires this ledger to match runner.coverage.FROZEN_WAIVERS member-for-member. Additions or removals require updating the policy and frozen whitelist together; coverable members that merely lack a fixture remain gaps rather than waivers.",
+  "_categories": {
+    "hardware": "requires physical hardware / OS capability a headless engine cannot own",
+    "chrome_private": "Chrome-internal behaviour with no cross-implementation contract",
+    "security_domain": "security/permission surface not applicable to the bench sandbox",
+    "not_applicable": "structurally out of the benchmark's protocol-observation scope"
+  },
+  "_schema": {
+    "<Domain.method>": {
+      "category": "one of _categories",
+      "reason": "concrete justification for excusing this member from coverage"
+    }
+  },
+  "waivers": {
+    "Browser.close": {
+      "category": "not_applicable",
+      "reason": "Closes the browser under test and tears down the very connection being observed; there is no in-session protocol observation of the effect."
+    },
+    "Browser.addPrivacySandboxCoordinatorKeyConfig": {
+      "category": "chrome_private",
+      "reason": "Privacy Sandbox coordinator-key plumbing internal to Chrome; no cross-implementation contract and no observable protocol effect for a native engine."
+    },
+    "Browser.addPrivacySandboxEnrollmentOverride": {
+      "category": "chrome_private",
+      "reason": "Privacy Sandbox enrollment override internal to Chrome; Chrome-only enrollment machinery with no cross-implementation semantics to conform to."
+    },
+    "Debugger.setScriptSource": {
+      "category": "not_applicable",
+      "reason": "Chrome rejects live source edits under a CDP connect/headless session ('setScriptSource functionality no longer available'), including file-backed scripts; the command is not exercisable in this harness (verified against Chrome 150)."
+    },
+    "Network.webTransportCreated": {
+      "category": "not_applicable",
+      "reason": "Requires an HTTP/3 WebTransport server; the self-hosted fixture stack is HTTP/1.1 only, so no WebTransport session can be established."
+    },
+    "Network.webTransportConnectionEstablished": {
+      "category": "not_applicable",
+      "reason": "Requires an HTTP/3 WebTransport server; not reachable from the HTTP/1.1 fixture stack."
+    },
+    "Network.webTransportClosed": {
+      "category": "not_applicable",
+      "reason": "Requires an HTTP/3 WebTransport session to first exist and then close; no WebTransport infra in the fixture stack."
+    },
+    "Page.interstitialShown": {
+      "category": "security_domain",
+      "reason": "Fires only when Chrome renders a real security interstitial (e.g. a certificate error); not reproducible against the trusted local 127.0.0.1 fixture server."
+    },
+    "Page.interstitialHidden": {
+      "category": "security_domain",
+      "reason": "Paired with interstitialShown; requires dismissing a security interstitial that the local fixture server never triggers."
+    },
+    "Performance.metrics": {
+      "category": "not_applicable",
+      "reason": "The Performance.metrics event is not emitted under a headless CDP connect session (only pushed to a live inspector timeline); the command surface is covered by Performance.getMetrics (v4_cdp_performance_disable)."
+    },
+    "Runtime.exceptionRevoked": {
+      "category": "not_applicable",
+      "reason": "Fires when a previously reported exception is revoked; there is no deterministic, non-flaky trigger for revocation without a live inspector, so a stable Chrome-gated assertion is not achievable."
+    },
+    "Runtime.inspectRequested": {
+      "category": "not_applicable",
+      "reason": "Emitted only in response to a DevTools inspect() interaction; not reachable from a headless CDP driver."
+    },
+    "Target.receivedMessageFromTarget": {
+      "category": "not_applicable",
+      "reason": "Deprecated non-flatten-session artifact; the harness attaches with flatten=true (Target.attachToTarget), and flatten sessions route messages directly and never emit this event."
+    },
+    "Target.targetCrashed": {
+      "category": "not_applicable",
+      "reason": "Requires crashing a target (e.g. navigating to chrome://crash), which destabilizes the shared browser process for the remainder of the run."
+    }
+  }
+}

definitions/config/l2_semantic_capabilities.json

@@ -0,0 +1,1603 @@
+{
+  "$schema": "l2_semantic_capabilities.schema.json",
+  "aggregation": "A capability-attempt passes only when every semantic_probe assigned to the capability passes. Each complete capability contributes one unit; driver_cross_check and diagnostic probes never add denominator units.",
+  "capabilities": [
+    {
+      "capability_id": "web.animations",
+      "category": "animations",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "Web Animations (Element.animate/getAnimations)",
+          "role": "diagnostic",
+          "task_id": "r3_fv_web_animations"
+        }
+      ],
+      "title": "animations"
+    },
+    {
+      "capability_id": "web.clipboard",
+      "category": "clipboard",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "Clipboard API",
+          "role": "diagnostic",
+          "task_id": "r3_fv_clipboard_api"
+        }
+      ],
+      "title": "clipboard"
+    },
+    {
+      "capability_id": "web.components.custom_elements",
+      "category": "components",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "customElements.define + upgrade",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c5_customelements"
+        },
+        {
+          "claim": "customElements.define + upgrade",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c5_customelements"
+        }
+      ],
+      "title": "components / custom elements"
+    },
+    {
+      "capability_id": "web.crypto.aes_gcm",
+      "category": "crypto",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "AES-GCM encrypt/decrypt roundtrip",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_crypto_aesgcm_roundtrip"
+        }
+      ],
+      "title": "crypto / aes gcm"
+    },
+    {
+      "capability_id": "web.crypto.digest",
+      "category": "crypto",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "SubtleCrypto SHA-256 digest byteLength is 32",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_crypto_digest_bytelength"
+        },
+        {
+          "claim": "SubtleCrypto SHA-1 of 'abc'",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_crypto_sha1_abc"
+        },
+        {
+          "claim": "SubtleCrypto SHA-256 of 'abc'",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_crypto_sha256_abc"
+        },
+        {
+          "claim": "SubtleCrypto SHA-256 of empty input",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_crypto_sha256_empty"
+        },
+        {
+          "claim": "SubtleCrypto SHA-384 of 'abc'",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_crypto_sha384_abc"
+        },
+        {
+          "claim": "SubtleCrypto SHA-512 of 'abc'",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_crypto_sha512_abc"
+        }
+      ],
+      "title": "crypto / digest"
+    },
+    {
+      "capability_id": "web.crypto.get_random_values",
+      "category": "crypto",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "getRandomValues fills and returns same typed array",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_crypto_getrandomvalues_shape"
+        }
+      ],
+      "title": "crypto / get random values"
+    },
+    {
+      "capability_id": "web.crypto.hmac",
+      "category": "crypto",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "HMAC-SHA256 sign then verify roundtrip",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_crypto_hmac_roundtrip"
+        },
+        {
+          "claim": "HMAC-SHA256 verify rejects tampered mac",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_crypto_hmac_tamper"
+        }
+      ],
+      "title": "crypto / hmac"
+    },
+    {
+      "capability_id": "web.crypto.random_uuid",
+      "category": "crypto",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "crypto.randomUUID",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c14_crypto_uuid"
+        },
+        {
+          "claim": "crypto.randomUUID",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c14_crypto_uuid"
+        }
+      ],
+      "title": "crypto / random uuid"
+    },
+    {
+      "capability_id": "web.css.cascade_specificity",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "cascade !important overrides higher specificity",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_css_cascade_important"
+        }
+      ],
+      "title": "css / cascade specificity"
+    },
+    {
+      "capability_id": "web.css.computed_style_cascade",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "getComputedStyle:color cascade",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_e_color_gate"
+        },
+        {
+          "claim": "getComputedStyle:font-size cascade",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_e_fontsize_gate"
+        },
+        {
+          "claim": "per-row getComputedStyle:color filtering + aggregate",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_h_color_table"
+        },
+        {
+          "claim": "computed color + font-size combined per-row classify",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_h_priced_list"
+        },
+        {
+          "claim": "getComputedStyle:background-color after class toggle",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_m_bgcolor_toggle"
+        },
+        {
+          "claim": "Computed-style stock filtering",
+          "role": "semantic_probe",
+          "task_id": "r4_q01_stock_list"
+        },
+        {
+          "claim": "Computed-style status dashboard",
+          "role": "semantic_probe",
+          "task_id": "r4_q04_status_dashboard"
+        }
+      ],
+      "title": "css / computed style cascade"
+    },
+    {
+      "capability_id": "web.css.constructable_stylesheets",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "adoptedStyleSheets constructable stylesheet",
+          "role": "semantic_probe",
+          "task_id": "r3_dC_e_adopted_color"
+        },
+        {
+          "claim": "adoptedStyleSheets applied after async",
+          "role": "semantic_probe",
+          "task_id": "r3_dC_m_adopted_async"
+        },
+        {
+          "claim": "adoptedStyleSheets widget state",
+          "role": "semantic_probe",
+          "task_id": "r4_q09_widget_adopted"
+        },
+        {
+          "claim": "constructable stylesheet + shadow adoptedStyleSheets",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_css_constructable"
+        }
+      ],
+      "title": "css / constructable stylesheets"
+    },
+    {
+      "capability_id": "web.css.cssom_rules",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "CSSOM styleSheets[].cssRules enumeration",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c6_cssom_rules"
+        },
+        {
+          "claim": "CSSOM styleSheets[].cssRules enumeration",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c6_cssom_rules"
+        }
+      ],
+      "title": "css / cssom rules"
+    },
+    {
+      "capability_id": "web.css.custom_properties",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "nested var() cascade override + async",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_h_var_cascade"
+        },
+        {
+          "claim": "CSS var() resolution after theme class swap",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_m_var_theme"
+        },
+        {
+          "claim": "CSS-variable pricing summary",
+          "role": "semantic_probe",
+          "task_id": "r4_q03_pricing_var"
+        }
+      ],
+      "title": "css / custom properties"
+    },
+    {
+      "capability_id": "web.css.generated_content",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "::before generated content",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_e_before_content"
+        },
+        {
+          "claim": "::after content on async-injected node",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_m_after_async"
+        },
+        {
+          "claim": "CSS attr() in generated content",
+          "role": "diagnostic",
+          "task_id": "r3_fv_attr_content"
+        }
+      ],
+      "title": "css / generated content"
+    },
+    {
+      "capability_id": "web.css.selector.attribute_case",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "case-insensitive attribute selector [a=v i]",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c19_ci_attr"
+        },
+        {
+          "claim": "case-insensitive attribute selector [a=v i]",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c19_ci_attr"
+        }
+      ],
+      "title": "css / selector / attribute case"
+    },
+    {
+      "capability_id": "web.css.selector.checked_state",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "CSS :checked sibling-combinator reveal",
+          "role": "diagnostic",
+          "task_id": "r3_probe_a3_checked_reveal"
+        },
+        {
+          "claim": "CSS :checked sibling-combinator reveal",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_a3_checked_reveal"
+        }
+      ],
+      "title": "css / selector / checked state"
+    },
+    {
+      "capability_id": "web.css.selector.focus_within",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": ":focus-within matches ancestor of focused element",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_css_focus_within"
+        }
+      ],
+      "title": "css / selector / focus within"
+    },
+    {
+      "capability_id": "web.css.selector.has",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": ":has() direct-child selector",
+          "role": "semantic_probe",
+          "task_id": "r3_dC_e_has_child"
+        },
+        {
+          "claim": "compound :has():has() multi-condition aggregate",
+          "role": "semantic_probe",
+          "task_id": "r3_dC_h_has_compound"
+        },
+        {
+          "claim": ":has() + :nth-child(of) combined + interaction",
+          "role": "semantic_probe",
+          "task_id": "r3_dC_h_has_nth_combo"
+        },
+        {
+          "claim": ":has(> child) on async-injected items",
+          "role": "semantic_probe",
+          "task_id": "r3_dC_m_has_child_inject"
+        },
+        {
+          "claim": ":not(:has()) selector",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c20_not_has"
+        },
+        {
+          "claim": "Element.matches(:has())",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c21_matches_has"
+        },
+        {
+          "claim": ":has() sale summary",
+          "role": "semantic_probe",
+          "task_id": "r4_q08_sale_has"
+        },
+        {
+          "claim": ":not(:has()) selector",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c20_not_has"
+        },
+        {
+          "claim": "Element.matches(:has())",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c21_matches_has"
+        },
+        {
+          "claim": ":has() with nested forgiving :is() child combinator",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_css_has_forgiving"
+        }
+      ],
+      "title": "css / selector / has"
+    },
+    {
+      "capability_id": "web.css.selector.is_where_specificity",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": ":is()/:where() selector",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c7_is_where"
+        },
+        {
+          "claim": ":is()/:where() selector",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c7_is_where"
+        },
+        {
+          "claim": ":is() specificity equals its most specific argument",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_css_is_specificity"
+        },
+        {
+          "claim": ":where() contributes zero specificity",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_css_where_zero"
+        }
+      ],
+      "title": "css / selector / is where specificity"
+    },
+    {
+      "capability_id": "web.css.selector.nth_of",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": ":nth-child(n of S) selector",
+          "role": "semantic_probe",
+          "task_id": "r3_dC_e_nth_of"
+        },
+        {
+          "claim": ":nth-last-child(n of S) selector",
+          "role": "semantic_probe",
+          "task_id": "r3_dC_m_nthlast_of"
+        },
+        {
+          "claim": ":nth-child(of S) leaderboard",
+          "role": "semantic_probe",
+          "task_id": "r4_q10_leaderboard_nth"
+        },
+        {
+          "claim": ":nth-child(An+B of S) filtered structural match",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_css_nth_child_of"
+        }
+      ],
+      "title": "css / selector / nth of"
+    },
+    {
+      "capability_id": "web.css.selector.scope",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": ":scope selector",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c23_scope_sel"
+        },
+        {
+          "claim": ":scope selector",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c23_scope_sel"
+        }
+      ],
+      "title": "css / selector / scope"
+    },
+    {
+      "capability_id": "web.css.supports",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "CSS.supports()",
+          "role": "diagnostic",
+          "task_id": "r3_fv_css_supports"
+        }
+      ],
+      "title": "css / supports"
+    },
+    {
+      "capability_id": "web.css.target_state",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": ":target pseudo-class reveal",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_e_target_reveal"
+        },
+        {
+          "claim": "multi :target tab walk + aggregate",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_h_tabs_target"
+        },
+        {
+          "claim": ":target reveal via in-page anchor click",
+          "role": "semantic_probe",
+          "task_id": "r3_dA_m_target_click"
+        },
+        {
+          "claim": ":target version summary",
+          "role": "semantic_probe",
+          "task_id": "r4_q02_target_section"
+        }
+      ],
+      "title": "css / target state"
+    },
+    {
+      "capability_id": "web.css.typed_custom_properties",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "CSS Houdini registerProperty",
+          "role": "diagnostic",
+          "task_id": "r3_fv_css_registerproperty"
+        },
+        {
+          "claim": "@property at-rule initial-value resolution",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_css_at_property"
+        },
+        {
+          "claim": "registered property inherits:true vs false",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_css_property_inherits"
+        },
+        {
+          "claim": "CSS.registerProperty <length> typed validation + initial fallback",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_css_register_syntax"
+        }
+      ],
+      "title": "css / typed custom properties"
+    },
+    {
+      "capability_id": "web.css.typed_om",
+      "category": "css",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "CSS Typed OM (computedStyleMap)",
+          "role": "diagnostic",
+          "task_id": "r3_fv_computedstylemap"
+        }
+      ],
+      "title": "css / typed om"
+    },
+    {
+      "capability_id": "web.dom.abort_signal",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "AbortSignal removes listener on abort; aborted/reason state",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_abortsignal"
+        }
+      ],
+      "title": "dom / abort signal"
+    },
+    {
+      "capability_id": "web.dom.adopt_node",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "adoptNode / importNode cross-document ownership",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_adoptnode"
+        }
+      ],
+      "title": "dom / adopt node"
+    },
+    {
+      "capability_id": "web.dom.clone_node",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "cloneNode deep vs shallow semantics",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_clonenode"
+        }
+      ],
+      "title": "dom / clone node"
+    },
+    {
+      "capability_id": "web.dom.event_dispatch",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "CustomEvent capture/target/bubble listener order",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_event_order"
+        },
+        {
+          "claim": "stopPropagation blocks ancestors but not same-target listeners",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_event_stopprop"
+        }
+      ],
+      "title": "dom / event dispatch"
+    },
+    {
+      "capability_id": "web.dom.layout_geometry",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "getBoundingClientRect width (layout geometry)",
+          "role": "diagnostic",
+          "task_id": "r3_fv_geom_gbcr"
+        },
+        {
+          "claim": "offsetWidth (layout geometry)",
+          "role": "diagnostic",
+          "task_id": "r3_fv_geom_offsetwidth"
+        },
+        {
+          "claim": "scrollHeight layout geometry",
+          "role": "diagnostic",
+          "task_id": "r3_fv_geom_scrollheight"
+        }
+      ],
+      "title": "dom / layout geometry"
+    },
+    {
+      "capability_id": "web.dom.mutation_observer",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "MutationObserver attributeFilter + attributeOldValue",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_mo_attributes"
+        },
+        {
+          "claim": "MutationObserver characterData oldValue records",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_mo_chardata"
+        },
+        {
+          "claim": "MutationObserver childList added/removed record aggregation",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_mo_childlist"
+        }
+      ],
+      "title": "dom / mutation observer"
+    },
+    {
+      "capability_id": "web.dom.parser",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "DOMParser.parseFromString",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c11_domparser"
+        },
+        {
+          "claim": "DOMParser.parseFromString",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c11_domparser"
+        },
+        {
+          "claim": "DOMParser XML parsererror vs HTML tolerance",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_domparser"
+        }
+      ],
+      "title": "dom / parser"
+    },
+    {
+      "capability_id": "web.dom.ranges",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "Range.cloneContents",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c18_range_fragment"
+        },
+        {
+          "claim": "Range.cloneContents",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c18_range_fragment"
+        },
+        {
+          "claim": "Range.extractContents partial text-node boundary split",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_range_extract"
+        },
+        {
+          "claim": "Range.surroundContents wrapping semantics",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_range_surround"
+        }
+      ],
+      "title": "dom / ranges"
+    },
+    {
+      "capability_id": "web.dom.rendered_text_extraction",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "CSS-aware innerText (display:none exclusion)",
+          "role": "diagnostic",
+          "task_id": "r3_fv_cssaware_innertext"
+        },
+        {
+          "claim": "CSS-aware extraction via getComputedStyle(display) on simple class rule",
+          "role": "diagnostic",
+          "task_id": "r3_probe_a11_cssaware_extract"
+        },
+        {
+          "claim": "CSS-aware extraction via getComputedStyle(display) on simple class rule",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_a11_cssaware_extract"
+        }
+      ],
+      "title": "dom / rendered text extraction"
+    },
+    {
+      "capability_id": "web.dom.shadow_root",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "open Shadow DOM attach/read",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c1_shadow"
+        }
+      ],
+      "title": "dom / shadow root"
+    },
+    {
+      "capability_id": "web.dom.structured_clone",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "structuredClone()",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c4_structuredclone"
+        },
+        {
+          "claim": "structuredClone()",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c4_structuredclone"
+        }
+      ],
+      "title": "dom / structured clone"
+    },
+    {
+      "capability_id": "web.dom.templates",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "<template>.content clone",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c2_template_slot"
+        },
+        {
+          "claim": "<template>.content clone",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c2_template_slot"
+        },
+        {
+          "claim": "template.content inert DocumentFragment and inert script",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_template_content"
+        }
+      ],
+      "title": "dom / templates"
+    },
+    {
+      "capability_id": "web.dom.traversal",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "document.createTreeWalker",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c12_treewalker"
+        },
+        {
+          "claim": "document.createTreeWalker",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c12_treewalker"
+        },
+        {
+          "claim": "NodeIterator SHOW_TEXT traversal with acceptNode filter",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_nodeiterator"
+        },
+        {
+          "claim": "TreeWalker acceptNode FILTER_REJECT vs FILTER_SKIP",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_dom_treewalker_filter"
+        }
+      ],
+      "title": "dom / traversal"
+    },
+    {
+      "capability_id": "web.dom.visibility",
+      "category": "dom",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "Element.checkVisibility()",
+          "role": "diagnostic",
+          "task_id": "r3_fv_checkvisibility"
+        }
+      ],
+      "title": "dom / visibility"
+    },
+    {
+      "capability_id": "web.encoding.decode",
+      "category": "encoding",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "TextDecoder strips UTF-8 BOM",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_enc_bom_strip"
+        },
+        {
+          "claim": "TextDecoder fatal mode throws on invalid byte",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_enc_fatal_throws"
+        },
+        {
+          "claim": "TextDecoder label aliases canonicalize",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_enc_labels"
+        },
+        {
+          "claim": "TextDecoder non-fatal replacement char",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_enc_nonfatal_replacement"
+        }
+      ],
+      "title": "encoding / decode"
+    },
+    {
+      "capability_id": "web.encoding.encode",
+      "category": "encoding",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "TextEncoder/TextDecoder",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c17_textencoder"
+        },
+        {
+          "claim": "TextEncoder/TextDecoder",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c17_textencoder"
+        },
+        {
+          "claim": "TextEncoder.encodeInto read/written counts",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_enc_encode_into"
+        },
+        {
+          "claim": "TextEncoder.encoding is utf-8",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_enc_encoding_prop"
+        },
+        {
+          "claim": "TextEncoder replaces lone surrogate",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_enc_surrogate_replace"
+        },
+        {
+          "claim": "TextEncoder UTF-8 of astral (4-byte) char",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_enc_utf8_astral"
+        }
+      ],
+      "title": "encoding / encode"
+    },
+    {
+      "capability_id": "web.encoding.streaming_decode",
+      "category": "encoding",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "TextDecoder stream splits a multibyte char",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_enc_stream_split"
+        }
+      ],
+      "title": "encoding / streaming decode"
+    },
+    {
+      "capability_id": "web.html.dialog",
+      "category": "html",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "<dialog>.showModal()",
+          "role": "diagnostic",
+          "task_id": "r3_g_dialog"
+        },
+        {
+          "claim": "<dialog>.showModal()",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_g_dialog"
+        }
+      ],
+      "title": "html / dialog"
+    },
+    {
+      "capability_id": "web.intl.duration_format",
+      "category": "intl",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "Intl.DurationFormat",
+          "role": "diagnostic",
+          "task_id": "r3_g_durationformat"
+        },
+        {
+          "claim": "Intl.DurationFormat",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_g_durationformat"
+        }
+      ],
+      "title": "intl / duration format"
+    },
+    {
+      "capability_id": "web.intl.number_format",
+      "category": "intl",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "Intl.NumberFormat",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c13_intl"
+        },
+        {
+          "claim": "Intl.NumberFormat",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c13_intl"
+        }
+      ],
+      "title": "intl / number format"
+    },
+    {
+      "capability_id": "web.intl.segmenter",
+      "category": "intl",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "Intl.Segmenter",
+          "role": "diagnostic",
+          "task_id": "r3_g_segmenter"
+        },
+        {
+          "claim": "Intl.Segmenter",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_g_segmenter"
+        }
+      ],
+      "title": "intl / segmenter"
+    },
+    {
+      "capability_id": "web.media.match_media",
+      "category": "media",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "matchMedia()",
+          "role": "diagnostic",
+          "task_id": "r3_probe_c8_matchmedia"
+        },
+        {
+          "claim": "matchMedia()",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_c8_matchmedia"
+        }
+      ],
+      "title": "media / match media"
+    },
+    {
+      "capability_id": "web.observer.intersection",
+      "category": "observer",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "IntersectionObserver callback",
+          "role": "diagnostic",
+          "task_id": "r3_g_io"
+        },
+        {
+          "claim": "IntersectionObserver callback",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_g_io"
+        }
+      ],
+      "title": "observer / intersection"
+    },
+    {
+      "capability_id": "web.storage.cache_api",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "CacheStorage API",
+          "role": "diagnostic",
+          "task_id": "r3_fv_cache_api"
+        }
+      ],
+      "title": "storage / cache api"
+    },
+    {
+      "capability_id": "web.storage.cookies",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "document.cookie read/write",
+          "role": "diagnostic",
+          "task_id": "r3_probe_b3_cookie"
+        },
+        {
+          "claim": "document.cookie read/write",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_b3_cookie"
+        },
+        {
+          "claim": "document.cookie stores multiple cookies",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_store_cookie_multiple"
+        },
+        {
+          "claim": "document.cookie write then read",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_store_cookie_readwrite"
+        }
+      ],
+      "title": "storage / cookies"
+    },
+    {
+      "capability_id": "web.storage.indexeddb.bulk_read",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "IndexedDB autoIncrement + getAll aggregate",
+          "role": "semantic_probe",
+          "task_id": "r3_dB_m_idb_getall"
+        },
+        {
+          "claim": "IndexedDB reader list",
+          "role": "semantic_probe",
+          "task_id": "r4_q05_reader_idb"
+        },
+        {
+          "claim": "IndexedDB cart total",
+          "role": "semantic_probe",
+          "task_id": "r4_q07_cart_idb"
+        },
+        {
+          "claim": "IndexedDB getAll / getAllKeys / count semantics",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_getall_keys_count"
+        }
+      ],
+      "title": "storage / indexeddb / bulk read"
+    },
+    {
+      "capability_id": "web.storage.indexeddb.cursor",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "IndexedDB cursor iterate + aggregate sum",
+          "role": "semantic_probe",
+          "task_id": "r3_dB_h_idb_cursor"
+        },
+        {
+          "claim": "IndexedDB cursor advance(n) skip semantics",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_cursor_advance"
+        },
+        {
+          "claim": "IndexedDB openCursor forward continue traversal",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_cursor_forward"
+        },
+        {
+          "claim": "IndexedDB openCursor reverse (prev) traversal",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_cursor_reverse"
+        }
+      ],
+      "title": "storage / indexeddb / cursor"
+    },
+    {
+      "capability_id": "web.storage.indexeddb.index_query",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "IndexedDB index query",
+          "role": "semantic_probe",
+          "task_id": "r3_dB_m_idb_index"
+        },
+        {
+          "claim": "IndexedDB notes lookup",
+          "role": "semantic_probe",
+          "task_id": "r4_q06_notes_idb"
+        },
+        {
+          "claim": "IndexedDB createIndex + index.getAll query",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_index_query"
+        },
+        {
+          "claim": "IndexedDB multiEntry index query",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_multientry_index"
+        }
+      ],
+      "title": "storage / indexeddb / index query"
+    },
+    {
+      "capability_id": "web.storage.indexeddb.key_paths",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "IndexedDB compound key path ordering and lookup",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_compound_key"
+        },
+        {
+          "claim": "IndexedDB nested keyPath extraction",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_nested_keypath"
+        }
+      ],
+      "title": "storage / indexeddb / key paths"
+    },
+    {
+      "capability_id": "web.storage.indexeddb.key_ranges",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "IndexedDB index count over key range",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_index_range_count"
+        },
+        {
+          "claim": "IndexedDB IDBKeyRange.bound inclusive/exclusive boundaries",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_keyrange_bound"
+        },
+        {
+          "claim": "IndexedDB IDBKeyRange.only and upperBound exclusive",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_keyrange_only_upper"
+        }
+      ],
+      "title": "storage / indexeddb / key ranges"
+    },
+    {
+      "capability_id": "web.storage.indexeddb.object_store",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "IndexedDB single keyPath record",
+          "role": "semantic_probe",
+          "task_id": "r3_dB_e_idb_record"
+        },
+        {
+          "claim": "IndexedDB two records read-back",
+          "role": "semantic_probe",
+          "task_id": "r3_dB_e_idb_two"
+        },
+        {
+          "claim": "Read seeded inventory from IndexedDB",
+          "role": "semantic_probe",
+          "task_id": "storage_indexeddb_inventory_001"
+        }
+      ],
+      "title": "storage / indexeddb / object store"
+    },
+    {
+      "capability_id": "web.storage.indexeddb.structured_clone",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "IndexedDB Blob and ArrayBuffer value round-trip",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_blob_value"
+        }
+      ],
+      "title": "storage / indexeddb / structured clone"
+    },
+    {
+      "capability_id": "web.storage.indexeddb.transactions",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "IndexedDB multi-store single-transaction atomicity",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_multistore_atomic"
+        },
+        {
+          "claim": "IndexedDB transaction abort rollback",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_txn_abort_rollback"
+        }
+      ],
+      "title": "storage / indexeddb / transactions"
+    },
+    {
+      "capability_id": "web.storage.indexeddb.upgrade",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "IndexedDB version upgrade migration + index",
+          "role": "semantic_probe",
+          "task_id": "r3_dB_h_idb_upgrade"
+        },
+        {
+          "claim": "IndexedDB onupgradeneeded version migration retains old store and adds new store",
+          "role": "semantic_probe",
+          "task_id": "v2_idb_upgrade_migrate"
+        }
+      ],
+      "title": "storage / indexeddb / upgrade"
+    },
+    {
+      "capability_id": "web.storage.local_storage",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "localStorage get/set",
+          "role": "diagnostic",
+          "task_id": "r3_probe_b1_localstorage"
+        },
+        {
+          "claim": "localStorage get/set",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_b1_localstorage"
+        },
+        {
+          "claim": "localStorage coerces value to string",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_store_coerce_string"
+        },
+        {
+          "claim": "localStorage key()/length contract (order-insensitive)",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_store_key_order"
+        },
+        {
+          "claim": "localStorage set/get/length/key/removeItem",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_store_local_setget"
+        },
+        {
+          "claim": "localStorage overwrite keeps length",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_store_overwrite_length"
+        },
+        {
+          "claim": "localStorage removeItem on missing key is a no-op",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_store_removeitem_missing"
+        }
+      ],
+      "title": "storage / local storage"
+    },
+    {
+      "capability_id": "web.storage.session_storage",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "sessionStorage get/set",
+          "role": "diagnostic",
+          "task_id": "r3_probe_b2_sessionstorage"
+        },
+        {
+          "claim": "sessionStorage get/set",
+          "role": "semantic_probe",
+          "task_id": "v2_leg_probe_b2_sessionstorage"
+        },
+        {
+          "claim": "sessionStorage is independent of localStorage",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_store_session_local_independent"
+        }
+      ],
+      "title": "storage / session storage"
+    },
+    {
+      "capability_id": "web.storage.storage_event",
+      "category": "storage",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "storage_state",
+      "probes": [
+        {
+          "claim": "storage event fires in another same-origin context",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_store_event_fires"
+        }
+      ],
+      "title": "storage / storage event"
+    },
+    {
+      "capability_id": "web.url.idn",
+      "category": "url",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "URL IDN host converts to punycode",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_idn_punycode"
+        }
+      ],
+      "title": "url / idn"
+    },
+    {
+      "capability_id": "web.url.parser_normalization",
+      "category": "url",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "URL normalizes backslash in special scheme",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_backslash"
+        },
+        {
+          "claim": "URL empty query preserves trailing ?",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_empty_query"
+        },
+        {
+          "claim": "URL lowercases host and scheme",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_lowercase_host"
+        },
+        {
+          "claim": "URL non-special scheme keeps opaque path",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_nonspecial_opaque"
+        }
+      ],
+      "title": "url / parser normalization"
+    },
+    {
+      "capability_id": "web.url.percent_encoding",
+      "category": "url",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "URL percent-encodes space in path",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_pct_space_path"
+        }
+      ],
+      "title": "url / percent encoding"
+    },
+    {
+      "capability_id": "web.url.port_normalization",
+      "category": "url",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "URL drops default port 80",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_default_port_http"
+        }
+      ],
+      "title": "url / port normalization"
+    },
+    {
+      "capability_id": "web.url.relative_resolution",
+      "category": "url",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "URL protocol-relative //host resolution",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_protocol_relative"
+        },
+        {
+          "claim": "URL relative resolution (./ dot segment)",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_rel_dot"
+        },
+        {
+          "claim": "URL relative resolution (../ dot segments)",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_rel_dotdot"
+        }
+      ],
+      "title": "url / relative resolution"
+    },
+    {
+      "capability_id": "web.url.search_params",
+      "category": "url",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "URLSearchParams getAll on repeated key",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_sp_getall"
+        },
+        {
+          "claim": "URLSearchParams decodes + as space",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_sp_plus_space"
+        },
+        {
+          "claim": "URLSearchParams set replaces all values",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_sp_set_replace"
+        },
+        {
+          "claim": "URLSearchParams sort orders keys",
+          "role": "semantic_probe",
+          "task_id": "v2_wpt_url_sp_sort"
+        }
+      ],
+      "title": "url / search params"
+    },
+    {
+      "capability_id": "web.view_transitions",
+      "category": "view_transitions",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "dom_state",
+      "probes": [
+        {
+          "claim": "View Transitions API",
+          "role": "diagnostic",
+          "task_id": "r3_fv_view_transitions"
+        }
+      ],
+      "title": "view transitions"
+    },
+    {
+      "capability_id": "workflow.authenticated_filter",
+      "category": "workflow",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "workflow_result",
+      "probes": [
+        {
+          "claim": "real Puppeteer login -> list -> premium filter",
+          "role": "driver_cross_check",
+          "task_id": "v3_pp_flow_login_filter"
+        },
+        {
+          "claim": "real Playwright login -> list -> premium filter",
+          "role": "semantic_probe",
+          "task_id": "v3_pw_flow_login_filter"
+        }
+      ],
+      "title": "authenticated filter"
+    },
+    {
+      "capability_id": "workflow.filtered_aggregate",
+      "category": "workflow",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "workflow_result",
+      "probes": [
+        {
+          "claim": "real Puppeteer select filter -> aggregated stat",
+          "role": "driver_cross_check",
+          "task_id": "v3_pp_flow_records_stat"
+        },
+        {
+          "claim": "real Playwright select filter -> aggregated stat",
+          "role": "semantic_probe",
+          "task_id": "v3_pw_flow_records_stat"
+        }
+      ],
+      "title": "filtered aggregate"
+    },
+    {
+      "capability_id": "workflow.paginated_cart",
+      "category": "workflow",
+      "description": "All semantic probes below are correlated evidence for this primary capability and jointly contribute one all-probes-pass verdict.",
+      "observable": "workflow_result",
+      "probes": [
+        {
+          "claim": "real Puppeteer paged shop add-to-cart across three pages",
+          "role": "driver_cross_check",
+          "task_id": "v3_pp_flow_shop_cart"
+        },
+        {
+          "claim": "real Playwright paged shop add-to-cart across three pages",
+          "role": "semantic_probe",
+          "task_id": "v3_pw_flow_shop_cart"
+        }
+      ],
+      "title": "paginated cart"
+    }
+  ],
+  "evaluation_axis": "web_platform_workflow_semantic_correctness",
+  "layer": "L2",
+  "probe_roles": {
+    "diagnostic": "Failure-localization evidence only; excluded from semantic scoring.",
+    "driver_cross_check": "Representative alternate-driver evidence; excluded from semantic scoring.",
+    "semantic_probe": "Observable semantic evidence included in the capability verdict."
+  },
+  "schema_version": 1,
+  "score_unit": "semantic_capability_attempt"
+}

definitions/config/l2_semantic_capabilities.schema.json

@@ -0,0 +1,132 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://github.com/lexmount/Lexbench-Headless-Browser/config/l2_semantic_capabilities.schema.json",
+  "title": "Agent Browser Bench L2 semantic capability map",
+  "type": "object",
+  "additionalProperties": false,
+  "required": [
+    "schema_version",
+    "layer",
+    "evaluation_axis",
+    "score_unit",
+    "aggregation",
+    "probe_roles",
+    "capabilities"
+  ],
+  "properties": {
+    "$schema": {
+      "type": "string"
+    },
+    "schema_version": {
+      "const": 1
+    },
+    "layer": {
+      "const": "L2"
+    },
+    "evaluation_axis": {
+      "const": "web_platform_workflow_semantic_correctness"
+    },
+    "score_unit": {
+      "const": "semantic_capability_attempt"
+    },
+    "aggregation": {
+      "type": "string",
+      "minLength": 1
+    },
+    "probe_roles": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "semantic_probe",
+        "driver_cross_check",
+        "diagnostic"
+      ],
+      "properties": {
+        "semantic_probe": {
+          "type": "string",
+          "minLength": 1
+        },
+        "driver_cross_check": {
+          "type": "string",
+          "minLength": 1
+        },
+        "diagnostic": {
+          "type": "string",
+          "minLength": 1
+        }
+      }
+    },
+    "capabilities": {
+      "type": "array",
+      "minItems": 1,
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": [
+          "capability_id",
+          "title",
+          "category",
+          "description",
+          "observable",
+          "probes"
+        ],
+        "properties": {
+          "capability_id": {
+            "type": "string",
+            "pattern": "^[a-z0-9][a-z0-9._-]*$"
+          },
+          "title": {
+            "type": "string",
+            "minLength": 1
+          },
+          "category": {
+            "type": "string",
+            "minLength": 1
+          },
+          "description": {
+            "type": "string",
+            "minLength": 1
+          },
+          "observable": {
+            "enum": [
+              "dom_state",
+              "storage_state",
+              "network_server_state",
+              "workflow_result"
+            ]
+          },
+          "probes": {
+            "type": "array",
+            "minItems": 1,
+            "items": {
+              "type": "object",
+              "additionalProperties": false,
+              "required": [
+                "task_id",
+                "role",
+                "claim"
+              ],
+              "properties": {
+                "task_id": {
+                  "type": "string",
+                  "minLength": 1
+                },
+                "role": {
+                  "enum": [
+                    "semantic_probe",
+                    "driver_cross_check",
+                    "diagnostic"
+                  ]
+                },
+                "claim": {
+                  "type": "string",
+                  "minLength": 1
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}

definitions/fixtures/expected_answers.json

@@ -0,0 +1,402 @@
+{
+  "r3_dA_e_before_content": {
+    "expected": "LABEL:\"NEW_ARRIVAL \"",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dA_e_color_gate": {
+    "expected": "IN_STOCK_GREEN",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dA_e_fontsize_gate": {
+    "expected": "TIER_LARGE_32",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dA_e_target_reveal": {
+    "expected": "SHOWN:COUPON_CODE_SAVE20",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dA_h_color_table": {
+    "expected": "INSTOCK:Alpha,Gamma,Epsilon",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dA_h_priced_list": {
+    "expected": "HOT:P1,P4",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dA_h_tabs_target": {
+    "expected": "SPECS:SPEC_A,SPEC_B,SPEC_C",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dA_h_var_cascade": {
+    "expected": "SECTION_SCOPED_VAR",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dA_m_after_async": {
+    "expected": "STATUS:\" [VERIFIED]\"",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dA_m_bgcolor_toggle": {
+    "expected": "FLAGGED_URGENT",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dA_m_target_click": {
+    "expected": "OPEN:FREE_OVER_50",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dA_m_var_theme": {
+    "expected": "THEME_DARK_ACCENT",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dB_e_idb_record": {
+    "expected": "USER:PROFILE_NAME_ERIC",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dB_e_idb_two": {
+    "expected": "CART:CART_ITEM_BOOK,CART_ITEM_PEN",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dB_h_idb_cursor": {
+    "expected": "LARGE_ORDERS=3_TOTAL=95",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dB_h_idb_upgrade": {
+    "expected": "VIP_AFTER_UPGRADE=2:ANN,CAM",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dB_m_idb_getall": {
+    "expected": "ORDERS=5:ORD_A,ORD_B,ORD_C,ORD_D,ORD_E",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dB_m_idb_index": {
+    "expected": "BOOKS=2:T1,BOOKMATCH_T3",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dC_e_adopted_color": {
+    "expected": "ADOPTED_STYLE_OK",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dC_e_has_child": {
+    "expected": "HAS_FLAGGED_CARD",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dC_e_nth_of": {
+    "expected": "NTH_SECOND_X",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dC_h_has_compound": {
+    "expected": "BOTH:R2,R4",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dC_h_has_nth_combo": {
+    "expected": "PROMO=L2,L3,L5|THIRD=L5",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dC_m_adopted_async": {
+    "expected": "ADOPTED_ASYNC_29",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dC_m_has_child_inject": {
+    "expected": "HAS_SALE_ITEM",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_dC_m_nthlast_of": {
+    "expected": "NTHLAST_TARGET",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_attr_content": {
+    "expected": "C:\"ATTR_LABEL_X\"",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_cache_api": {
+    "expected": "CACHE_OK",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_checkvisibility": {
+    "expected": "CHECKVIS_OK",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_clipboard_api": {
+    "expected": "CLIPBOARD_OK",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_computedstylemap": {
+    "expected": "CSM:21px",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_css_registerproperty": {
+    "expected": "REGPROP_OK",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_css_supports": {
+    "expected": "SUPPORTS_GRID",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_cssaware_innertext": {
+    "expected": "VISIBLE_PRICE_99",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_geom_gbcr": {
+    "expected": "GBCR_W_OK",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_geom_offsetwidth": {
+    "expected": "OFFSET_W_OK",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_geom_scrollheight": {
+    "expected": "SCROLLH_OK",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_view_transitions": {
+    "expected": "VIEWTRANS_OK",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_fv_web_animations": {
+    "expected": "ANIM_OK",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_g_dialog": {
+    "expected": "DIALOG_OPEN",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_g_durationformat": {
+    "expected": "DURFMT_OK:1 hour, 30 minutes",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_g_io": {
+    "expected": "IO_FIRED",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_g_segmenter": {
+    "expected": "SEG_OK:5",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_a11_cssaware_extract": {
+    "expected": "CSSAWARE_A11:PRICE_VISIBLE_A11_99|PRICE_VISIBLE_A11_42",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_a3_checked_reveal": {
+    "expected": "ANSWER_CHECKED_A3",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_b1_localstorage": {
+    "expected": "LOCALSTORAGE_VAL_B1",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_b2_sessionstorage": {
+    "expected": "SESSIONSTORAGE_VAL_B2",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_b3_cookie": {
+    "expected": "COOKIE_VAL_B3",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c11_domparser": {
+    "expected": "DOMPARSER_C11",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c12_treewalker": {
+    "expected": "TREEWALK_C12:SPAN,B",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c13_intl": {
+    "expected": "INTL_C13:$1,234.50",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c14_crypto_uuid": {
+    "expected": "UUID_C14:",
+    "mode": "contains",
+    "note": "volatile answer; matched on stable prefix from double-bake",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c17_textencoder": {
+    "expected": "TEXTENC_C17:2:AB",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c18_range_fragment": {
+    "expected": "RANGE_C18:RANGE_C18",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c19_ci_attr": {
+    "expected": "CIATTR_C19:CIATTR_C19",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c20_not_has": {
+    "expected": "NOTHAS_C20:NOTHAS_C20",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c21_matches_has": {
+    "expected": "MATCHESHAS_C21:ok",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c23_scope_sel": {
+    "expected": "SCOPE_C23:SCOPE_C23",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c2_template_slot": {
+    "expected": "TEMPLATE_ROW_C2",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c4_structuredclone": {
+    "expected": "STRUCTURED_CLONE_C4_7",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c5_customelements": {
+    "expected": "CUSTOM_EL_C5",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c6_cssom_rules": {
+    "expected": "CSSOM_MARKER_C6:rgb(1, 2, 3)",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c7_is_where": {
+    "expected": "ISWHERE:B_TEXT_C7",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r3_probe_c8_matchmedia": {
+    "expected": "MATCHMEDIA_WIDE_C8",
+    "mode": "equals",
+    "oracle": "chrome 150.0.7871.49"
+  },
+  "r4_q01_stock_list": {
+    "expected": [
+      "无线降噪耳机",
+      "￥499",
+      "机械键盘 87 键",
+      "￥329",
+      "USB-C 65W 充电器",
+      "￥129"
+    ],
+    "mode": "contains_all"
+  },
+  "r4_q02_target_section": {
+    "expected": [
+      "2.4.0 及以上"
+    ],
+    "mode": "contains_all"
+  },
+  "r4_q03_pricing_var": {
+    "expected": [
+      "￥79/月"
+    ],
+    "mode": "contains_all"
+  },
+  "r4_q04_status_dashboard": {
+    "expected": [
+      "支付网关",
+      "消息推送"
+    ],
+    "mode": "contains_all"
+  },
+  "r4_q05_reader_idb": {
+    "expected": [
+      "Rust 异步运行时对比",
+      "WebAssembly 在边缘计算的实践",
+      "从零实现一个 CSS 引擎",
+      "HTTP/3 与 QUIC 入门"
+    ],
+    "mode": "contains_all"
+  },
+  "r4_q06_notes_idb": {
+    "expected": [
+      "差旅发票贴在 A4 纸上",
+      "审批人填王敏"
+    ],
+    "mode": "contains_all"
+  },
+  "r4_q07_cart_idb": {
+    "expected": [
+      "5 件",
+      "￥1287"
+    ],
+    "mode": "contains_all"
+  },
+  "r4_q08_sale_has": {
+    "expected": [
+      "春季新茶 250g",
+      "手冲咖啡礼盒",
+      "进口巧克力 12 颗装"
+    ],
+    "mode": "contains_all"
+  },
+  "r4_q09_widget_adopted": {
+    "expected": [
+      "72%",
+      "运行中"
+    ],
+    "mode": "contains_all"
+  },
+  "r4_q10_leaderboard_nth": {
+    "expected": [
+      "林深",
+      "金牌",
+      "苏晓",
+      "银��",
+      "陈屿",
+      "铜牌"
+    ],
+    "mode": "contains_all"
+  }
+}

definitions/fixtures/l1/app.js

@@ -0,0 +1 @@
+window.__scriptLoaded = true;

definitions/fixtures/l1/core.html

@@ -0,0 +1,42 @@
+<!doctype html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CDP Core Fixture</title>
+<script src="/app.js"></script>
+</head>
+<body>
+<h1 id="title">CDP Core Fixture</h1>
+<button id="inc">Increment</button><output id="count">0</output>
+<input id="field" type="text" value="" placeholder="type here">
+<input id="checkbox" type="checkbox">
+<select id="dropdown"><option value="a">Alpha</option><option value="b">Beta</option><option value="c">Gamma</option></select>
+<button id="dbl">DoubleMe</button><output id="dblcount">0</output>
+<button id="boom">Boom</button>
+<div id="hovertarget">hover-idle</div>
+<a id="link" href="/page2">go to page two</a>
+<img id="pixel" src="/pixel.png" alt="pixel">
+<p class="para">first paragraph</p>
+<p class="para">second paragraph</p>
+<div id="tall" style="height:3000px">tall spacer</div>
+<div id="bottom">bottom-marker</div>
+<script>
+window.__fixtureReady = true;
+document.getElementById('inc').addEventListener('click', function () {
+  var out = document.getElementById('count');
+  out.textContent = String(Number(out.textContent) + 1);
+});
+document.getElementById('dbl').addEventListener('dblclick', function () {
+  var out = document.getElementById('dblcount');
+  out.textContent = String(Number(out.textContent) + 1);
+});
+document.getElementById('boom').addEventListener('click', function () {
+  throw new Error('intentional-page-error');
+});
+document.getElementById('hovertarget').addEventListener('mouseover', function () {
+  this.textContent = 'hover-active';
+});
+console.log('fixture-console-ready');
+</script>
+</body>
+</html>

definitions/fixtures/l1/download.txt

@@ -0,0 +1 @@
+downloaded-file-body

definitions/fixtures/l1/download.txt.headers.json

@@ -0,0 +1,4 @@
+{
+  "Content-Type": "text/plain",
+  "Content-Disposition": "attachment; filename=\"download.txt\""
+}

definitions/fixtures/l1/page2.html

@@ -0,0 +1,5 @@
+<!doctype html>
+<html>
+<head><meta charset="utf-8"><title>Page Two</title></head>
+<body><h1 id="title">Page Two</h1><p>second page</p></body>
+</html>

definitions/fixtures/l1/probe.html

@@ -0,0 +1,26 @@
+<!doctype html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>Probe Fixture</title>
+<script src="/app.js"></script>
+</head>
+<body>
+<h1 id="title">Probe Fixture</h1>
+<button id="inc">Inc</button><output id="count">0</output>
+<input id="field" type="text">
+<input id="file" type="file">
+<select id="dropdown"><option value="a">A</option><option value="b">B</option></select>
+<input id="cb" type="checkbox">
+<a id="dl" href="/download.txt" download>download</a>
+<button id="cfm" onclick="window.__r = confirm('ok?')">confirm</button>
+<div id="tall" style="height:3000px"></div>
+<script>
+document.getElementById('inc').addEventListener('click', function () {
+  var out = document.getElementById('count');
+  out.textContent = String(Number(out.textContent) + 1);
+});
+console.log('probe-console-ready');
+</script>
+</body>
+</html>

definitions/fixtures/l2_round3/dA_e_before_content.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A before</title><style>#badge::before{content:'NEW_ARRIVAL '}</style></head><body><div id='badge'>Sneaker</div><div id='out'></div><script>var c=getComputedStyle(document.getElementById('badge'),'::before').content;document.getElementById('out').textContent='LABEL:'+c;</script></body></html>

definitions/fixtures/l2_round3/dA_e_color_gate.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A color gate</title><style>.tag{color:rgb(10,120,30)}</style></head><body><span class='tag' id='t'>x</span><div id='out'></div><script>var c=getComputedStyle(document.getElementById('t')).color;document.getElementById('out').textContent=(c==='rgb(10, 120, 30)')?'IN_STOCK_GREEN':('OTHER:'+c);</script></body></html>

definitions/fixtures/l2_round3/dA_e_fontsize_gate.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A font-size</title><style>.headline{font-size:32px}</style></head><body><h1 class='headline' id='h'>x</h1><div id='out'></div><script>var fs=getComputedStyle(document.getElementById('h')).fontSize;document.getElementById('out').textContent=(fs==='32px')?'TIER_LARGE_32':('FS:'+fs);</script></body></html>

definitions/fixtures/l2_round3/dA_e_target_reveal.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A target</title><style>.panel{display:none} .panel:target{display:block}</style></head><body><div class='panel' id='sec'>COUPON_CODE_SAVE20</div><div id='out'></div><script>function r(){var p=document.getElementById('sec');document.getElementById('out').textContent=getComputedStyle(p).display==='block'?('SHOWN:'+p.textContent):'HIDDEN';}addEventListener('load',r);addEventListener('hashchange',r);r();</script></body></html>

definitions/fixtures/l2_round3/dA_h_color_table.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A color table</title><style>.in{color:rgb(0,150,0)} .out{color:rgb(180,0,0)}</style></head><body><ul id='list'><li class='in' data-name='Alpha'>Alpha</li><li class='out' data-name='Beta'>Beta</li><li class='in' data-name='Gamma'>Gamma</li><li class='out' data-name='Delta'>Delta</li><li class='in' data-name='Epsilon'>Epsilon</li></ul><div id='out'></div><script>var items=document.querySelectorAll('#list li');var keep=[];for(var i=0;i<items.length;i++){if(getComputedStyle(items[i]).color==='rgb(0, 150, 0)')keep.push(items[i].dataset.name);}document.getElementById('out').textContent='INSTOCK:'+keep.join(',');</script></body></html>

definitions/fixtures/l2_round3/dA_h_priced_list.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A priced</title><style>.sale{color:rgb(220,0,0)} .lg{font-size:24px}</style></head><body><ul id='list'><li class='sale lg' data-id='P1'>P1</li><li class='lg' data-id='P2'>P2</li><li class='sale' data-id='P3'>P3</li><li class='sale lg' data-id='P4'>P4</li></ul><div id='out'></div><script>var li=document.querySelectorAll('#list li');var hot=[];for(var i=0;i<li.length;i++){var cs=getComputedStyle(li[i]);if(cs.color==='rgb(220, 0, 0)'&&cs.fontSize==='24px')hot.push(li[i].dataset.id);}document.getElementById('out').textContent='HOT:'+hot.join(',');</script></body></html>

definitions/fixtures/l2_round3/dA_h_tabs_target.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A tabs</title><style>.tab{display:none} .tab:target{display:block}</style></head><body><a id='l1' href='#t1'>1</a><a id='l2' href='#t2'>2</a><a id='l3' href='#t3'>3</a><div class='tab' id='t1'>SPEC_A</div><div class='tab' id='t2'>SPEC_B</div><div class='tab' id='t3'>SPEC_C</div><div id='log'></div><div id='out'></div><script>window.__seen=[];function r(){var t=['t1','t2','t3'];for(var i=0;i<3;i++){var p=document.getElementById(t[i]);if(getComputedStyle(p).display==='block'&&window.__seen.indexOf(p.textContent)<0)window.__seen.push(p.textContent);}document.getElementById('out').textContent='SPECS:'+window.__seen.join(',');}addEventListener('hashchange',r);r();</script></body></html>

definitions/fixtures/l2_round3/dA_h_var_cascade.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A var cascade</title><style>:root{--c:rgb(1,1,1)} .section{--c:rgb(20,40,60)} #leaf{color:var(--c)}</style></head><body><div class='section' id='s'><span id='leaf'>deep</span></div><div id='out'></div><script>setTimeout(function(){var c=getComputedStyle(document.getElementById('leaf')).color;document.getElementById('out').textContent=(c==='rgb(20, 40, 60)')?'SECTION_SCOPED_VAR':('C:'+c);},350);</script></body></html>

definitions/fixtures/l2_round3/dA_m_after_async.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A after async</title><style>.chip::after{content:' [VERIFIED]'}</style></head><body><div id='host'></div><div id='out'></div><script>setTimeout(function(){var d=document.createElement('span');d.className='chip';d.id='c';d.textContent='Seller';document.getElementById('host').appendChild(d);var c=getComputedStyle(d,'::after').content;document.getElementById('out').textContent='STATUS:'+c;},400);</script></body></html>

definitions/fixtures/l2_round3/dA_m_bgcolor_toggle.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A bg toggle</title><style>.hl{background-color:rgb(200,30,40)}</style></head><body><div id='cell'>row</div><button id='go'>flag</button><div id='out'></div><script>document.getElementById('go').addEventListener('click',function(){document.getElementById('cell').className='hl';});function read(){var b=getComputedStyle(document.getElementById('cell')).backgroundColor;document.getElementById('out').textContent=(b==='rgb(200, 30, 40)')?'FLAGGED_URGENT':('BG:'+b);}document.getElementById('cell').addEventListener('transitionend',read);new MutationObserver(read).observe(document.getElementById('cell'),{attributes:true});</script></body></html>

definitions/fixtures/l2_round3/dA_m_target_click.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A target click</title><style>.tab{display:none} .tab:target{display:block}</style></head><body><a id='lnk' href='#shipping'>shipping</a><div class='tab' id='shipping'>FREE_OVER_50</div><div id='out'></div><script>function r(){var p=document.getElementById('shipping');document.getElementById('out').textContent=getComputedStyle(p).display==='block'?('OPEN:'+p.textContent):'CLOSED';}addEventListener('hashchange',r);r();</script></body></html>

definitions/fixtures/l2_round3/dA_m_var_theme.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>A var theme</title><style>:root{--accent:rgb(0,0,0)} .dark{--accent:rgb(90,200,255)} .price{color:var(--accent)}</style></head><body><div class='price' id='p'>$42</div><button id='go'>dark</button><div id='out'></div><script>document.getElementById('go').addEventListener('click',function(){document.documentElement.className='dark';});function read(){var c=getComputedStyle(document.getElementById('p')).color;document.getElementById('out').textContent=(c==='rgb(90, 200, 255)')?'THEME_DARK_ACCENT':('C:'+c);}new MutationObserver(read).observe(document.documentElement,{attributes:true});</script></body></html>

definitions/fixtures/l2_round3/dB_e_idb_record.html

@@ -0,0 +1 @@
+<!doctype html><html><head><meta charset="utf-8"><title>B idb record</title></head><body><div id='out'>PENDING</div><script>function set(t){document.getElementById('out').textContent=t;}try{var rq=indexedDB.open('r3_rec',1);rq.onupgradeneeded=function(e){e.target.result.createObjectStore('s',{keyPath:'id'});};rq.onsuccess=function(e){var db=e.target.result;var tx=db.transaction('s','readwrite');tx.objectStore('s').put({id:1,name:'PROFILE_NAME_ERIC'});tx.oncomplete=function(){var g=db.transaction('s').objectStore('s').get(1);g.onsuccess=function(){set('USER:'+(g.result&&g.result.name||'NULL'));};};};}catch(e){set('ERR:'+e.message);}</script></body></html>