{ "cases": [ { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for ::before generated content. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dA_e_before_content.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: output prefixed 'LABEL:'; expected token NEW_ARRIVAL inside ::before content string.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_e_before_content", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_e_before_content.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_e_before_content", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "::before generated content" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web platform semantics probe for getComputedStyle:color cascade. The scripted CDP driver observes page output from the self-hosted fixture `/fixtures/l2_round3/dA_e_color_gate.html`, and the server-side grader compares it with the expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_e_color_gate", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_e_color_gate.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_e_color_gate", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "getComputedStyle:color cascade" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web platform semantics probe for getComputedStyle:font-size cascade. The scripted CDP driver observes page output from the self-hosted fixture `/fixtures/l2_round3/dA_e_fontsize_gate.html`, and the server-side grader compares it with the expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_e_fontsize_gate", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_e_fontsize_gate.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_e_fontsize_gate", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "getComputedStyle:font-size cascade" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for :target pseudo-class reveal. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dA_e_target_reveal.html#sec`, and the server-side grader compares it with the checked-in expected answer. Current probe details: must open with #sec hash; #out shows 'SHOWN:COUPON_CODE_SAVE20' when :target matches, else 'HIDDEN'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_e_target_reveal", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_e_target_reveal.html#sec" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_e_target_reveal", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": ":target pseudo-class reveal" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for per-row getComputedStyle:color filtering + aggregate. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dA_h_color_table.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: output 'INSTOCK:Alpha,Gamma,Epsilon'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_h_color_table", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_h_color_table.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_h_color_table", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "per-row getComputedStyle:color filtering + aggregate" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for computed color + font-size combined per-row classify. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dA_h_priced_list.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: output 'HOT:P1,P4'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_h_priced_list", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_h_priced_list.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_h_priced_list", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "computed color + font-size combined per-row classify" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for multi :target tab walk + aggregate. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dA_h_tabs_target.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: requires clicking #l1,#l2,#l3 in order, waiting for each SPEC_x to appear in window.__seen; output 'SPECS:SPEC_A,SPEC_B,SPEC_C'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "pre_clicks": [ "#l1", "#l2", "#l3" ], "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 8000, "wait_ms": 300 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_h_tabs_target", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_h_tabs_target.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_h_tabs_target", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "multi :target tab walk + aggregate" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for nested var() cascade override + async. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dA_h_var_cascade.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: async: setTimeout 350ms before #out is written.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 6000, "wait_ms": 400 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_h_var_cascade", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_h_var_cascade.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_h_var_cascade", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "nested var() cascade override + async" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for ::after content on async-injected node. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dA_m_after_async.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: async: chip injected via setTimeout 400ms; output 'STATUS:...VERIFIED...'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 6000, "wait_ms": 400 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_m_after_async", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_m_after_async.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_m_after_async", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "::after content on async-injected node" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for getComputedStyle:background-color after class toggle. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dA_m_bgcolor_toggle.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: requires clicking #go; wait until computed backgroundColor of #cell is rgb(200, 30, 40); MutationObserver writes #out.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "pre_clicks": [ "#go" ], "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 8000, "wait_ms": 300 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_m_bgcolor_toggle", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_m_bgcolor_toggle.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_m_bgcolor_toggle", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "getComputedStyle:background-color after class toggle" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for :target reveal via in-page anchor click. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dA_m_target_click.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: requires clicking #lnk (sets #shipping hash); wait until #shipping display:block.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "pre_clicks": [ "#lnk" ], "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 8000, "wait_ms": 300 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_m_target_click", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_m_target_click.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_m_target_click", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": ":target reveal via in-page anchor click" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for CSS var() resolution after theme class swap. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dA_m_var_theme.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: requires clicking #go; wait until computed color of #p is rgb(90, 200, 255).", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "pre_clicks": [ "#go" ], "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 8000, "wait_ms": 300 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dA_m_var_theme", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dA_m_var_theme.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dA_m_var_theme", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "CSS var() resolution after theme class swap" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for IndexedDB single keyPath record. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dB_e_idb_record.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: IDB async; #out initial text 'PENDING'; output 'USER:PROFILE_NAME_ERIC'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "not_pending", "settle_timeout_ms": 8000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.storage.indexeddb" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dB_e_idb_record", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dB_e_idb_record.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dB_e_idb_record", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "IndexedDB single keyPath record" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for IndexedDB two records read-back. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dB_e_idb_two.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: IDB async; PENDING pattern; output 'CART:CART_ITEM_BOOK,CART_ITEM_PEN'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "not_pending", "settle_timeout_ms": 8000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.storage.indexeddb" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dB_e_idb_two", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dB_e_idb_two.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dB_e_idb_two", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "IndexedDB two records read-back" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for IndexedDB cursor iterate + aggregate sum. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dB_h_idb_cursor.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: IDB async; PENDING pattern; output 'LARGE_ORDERS=3_TOTAL=95'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "not_pending", "settle_timeout_ms": 8000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.storage.indexeddb" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dB_h_idb_cursor", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dB_h_idb_cursor.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dB_h_idb_cursor", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "IndexedDB cursor iterate + aggregate sum" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for IndexedDB version upgrade migration + index. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dB_h_idb_upgrade.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: IDB async two-phase (v1 write, close, v2 upgrade+index); PENDING pattern; timeout 9s in plan; output 'VIP_AFTER_UPGRADE=2:ANN,CAM'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "not_pending", "settle_timeout_ms": 8000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.storage.indexeddb" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dB_h_idb_upgrade", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dB_h_idb_upgrade.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dB_h_idb_upgrade", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "IndexedDB version upgrade migration + index" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for IndexedDB autoIncrement + getAll aggregate. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dB_m_idb_getall.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: IDB async; PENDING pattern; output 'ORDERS=5:ORD_A,...,ORD_E'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "not_pending", "settle_timeout_ms": 8000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.storage.indexeddb" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dB_m_idb_getall", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dB_m_idb_getall.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dB_m_idb_getall", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "IndexedDB autoIncrement + getAll aggregate" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for IndexedDB index query. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dB_m_idb_index.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: IDB async; PENDING pattern; output 'BOOKS=2:T1,BOOKMATCH_T3'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "not_pending", "settle_timeout_ms": 8000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.storage.indexeddb" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dB_m_idb_index", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dB_m_idb_index.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dB_m_idb_index", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "IndexedDB index query" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web platform semantics probe for adoptedStyleSheets constructable stylesheet. The scripted CDP driver observes page output from the self-hosted fixture `/fixtures/l2_round3/dC_e_adopted_color.html`, and the server-side grader compares it with the expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.constructable_stylesheets" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dC_e_adopted_color", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dC_e_adopted_color.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dC_e_adopted_color", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "adoptedStyleSheets constructable stylesheet" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web platform semantics probe for :has() direct-child selector. The scripted CDP driver observes page output from the self-hosted fixture `/fixtures/l2_round3/dC_e_has_child.html`, and the server-side grader compares it with the expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.selectors.has" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dC_e_has_child", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dC_e_has_child.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dC_e_has_child", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": ":has() direct-child selector" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web platform semantics probe for :nth-child(n of S) selector. The scripted CDP driver observes page output from the self-hosted fixture `/fixtures/l2_round3/dC_e_nth_of.html`, and the server-side grader compares it with the expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.selectors.nth_child" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dC_e_nth_of", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dC_e_nth_of.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dC_e_nth_of", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": ":nth-child(n of S) selector" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for compound :has():has() multi-condition aggregate. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dC_h_has_compound.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: output 'BOTH:R2,R4'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.selectors.has" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dC_h_has_compound", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dC_h_has_compound.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dC_h_has_compound", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "compound :has():has() multi-condition aggregate" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for :has() + :nth-child(of) combined + interaction. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dC_h_has_nth_combo.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: requires clicking #go to build list; output 'PROMO=L2,L3,L5|THIRD=L5'.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "pre_clicks": [ "#go" ], "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 8000, "wait_ms": 300 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.selectors.has" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dC_h_has_nth_combo", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dC_h_has_nth_combo.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dC_h_has_nth_combo", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": ":has() + :nth-child(of) combined + interaction" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for adoptedStyleSheets applied after async. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dC_m_adopted_async.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: async: adoptedStyleSheets applied via setTimeout 400ms.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 6000, "wait_ms": 400 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.constructable_stylesheets" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dC_m_adopted_async", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dC_m_adopted_async.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dC_m_adopted_async", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "adoptedStyleSheets applied after async" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for :has(> child) on async-injected items. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/dC_m_has_child_inject.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: requires clicking #go to inject items; MutationObserver writes #out.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "pre_clicks": [ "#go" ], "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 8000, "wait_ms": 300 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.selectors.has" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dC_m_has_child_inject", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dC_m_has_child_inject.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dC_m_has_child_inject", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": ":has(> child) on async-injected items" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web platform semantics probe for :nth-last-child(n of S) selector. The scripted CDP driver observes page output from the self-hosted fixture `/fixtures/l2_round3/dC_m_nthlast_of.html`, and the server-side grader compares it with the expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.selectors.nth_child" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "dC_m_nthlast_of", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/dC_m_nthlast_of.html" }, "subset_id": "l2.web_platform", "tags": [ "version.v0_1" ], "task_id": "r3_dC_m_nthlast_of", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": ":nth-last-child(n of S) selector" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for CSS attr() in generated content. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_attr_content.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: output 'C:<::before content>'; pass token ATTR_LABEL_X.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.generated_content" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_attr_content", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_attr_content.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_attr_content", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "CSS attr() in generated content" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for CacheStorage API. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_cache_api.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: async Promise chain; #out initial 'PENDING'; pass token CACHE_OK.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "not_pending", "settle_timeout_ms": 8000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.storage.cache_api" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_cache_api", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_cache_api.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_cache_api", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "CacheStorage API" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for Element.checkVisibility(). The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_checkvisibility.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: pass token CHECKVIS_OK.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.cascade" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_checkvisibility", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_checkvisibility.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_checkvisibility", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "Element.checkVisibility()" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for Clipboard API. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_clipboard_api.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: pass token CLIPBOARD_OK.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.clipboard" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_clipboard_api", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_clipboard_api.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_clipboard_api", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "Clipboard API" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for CSS Typed OM (computedStyleMap). The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_computedstylemap.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: pass token CSM:21px.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.typed_om" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_computedstylemap", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_computedstylemap.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_computedstylemap", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "CSS Typed OM (computedStyleMap)" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for CSS Houdini registerProperty. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_css_registerproperty.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: pass token REGPROP_OK.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.register_property" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_css_registerproperty", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_css_registerproperty.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_css_registerproperty", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "CSS Houdini registerProperty" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for CSS.supports(). The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_css_supports.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: pass token SUPPORTS_GRID.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.supports" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_css_supports", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_css_supports.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_css_supports", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "CSS.supports()" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for CSS-aware innerText (display:none exclusion). The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_cssaware_innertext.html`, and the server-side grader compares it with the checked-in expected answer. The driver grades `#card.innerText` directly and requires the hidden `DRAFT_LEAK_500` text to be absent; `#out` mirrors the same visible text.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "innerText", "selector": "#card", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.dom.text_extraction", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_cssaware_innertext", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_cssaware_innertext.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_cssaware_innertext", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "CSS-aware innerText (display:none exclusion)" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for getBoundingClientRect width (layout geometry). The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_geom_gbcr.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: pass token GBCR_W_OK.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.dom.geometry" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_geom_gbcr", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_geom_gbcr.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_geom_gbcr", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "getBoundingClientRect width (layout geometry)" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for offsetWidth (layout geometry). The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_geom_offsetwidth.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: pass token OFFSET_W_OK.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.dom.geometry" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_geom_offsetwidth", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_geom_offsetwidth.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_geom_offsetwidth", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "offsetWidth (layout geometry)" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for scrollHeight layout geometry. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_geom_scrollheight.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: pass token SCROLLH_OK.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.dom.geometry" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_geom_scrollheight", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_geom_scrollheight.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_geom_scrollheight", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "scrollHeight layout geometry" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for View Transitions API. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_view_transitions.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: pass token VIEWTRANS_OK.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.view_transitions" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_view_transitions", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_view_transitions.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_view_transitions", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "View Transitions API" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for Web Animations (Element.animate/getAnimations). The driver reads output from the self-hosted fixture `/fixtures/l2_round3/fv_web_animations.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: pass token ANIM_OK.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.animations" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "fv_web_animations", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/fv_web_animations.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.defect_repro", "purpose.diagnostic", "version.v0_1" ], "task_id": "r3_fv_web_animations", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "Web Animations (Element.animate/getAnimations)" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for .showModal(). The driver reads output from the self-hosted fixture `/fixtures/l2_round3/g_dialog.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.html.dialog" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "g_dialog", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/g_dialog.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_g_dialog", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": ".showModal()" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for Intl.DurationFormat. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/g_durationformat.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.intl.duration_format" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "g_durationformat", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/g_durationformat.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_g_durationformat", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "Intl.DurationFormat" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for IntersectionObserver callback. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/g_io.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: #out starts 'PENDING'; IntersectionObserver flips to IO_FIRED (or IO_NEVER after 1.5s).", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "not_pending", "settle_timeout_ms": 8000, "wait_ms": 200 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.observer.intersection" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "g_io", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/g_io.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_g_io", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "IntersectionObserver callback" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for Intl.Segmenter. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/g_segmenter.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.intl.segmenter" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "g_segmenter", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/g_segmenter.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_g_segmenter", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "Intl.Segmenter" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for CSS-aware extraction via getComputedStyle(display) on simple class rule. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_a11_cssaware_extract.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.dom.text_extraction", "web.css.computed_style" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_a11_cssaware_extract", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_a11_cssaware_extract.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_a11_cssaware_extract", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "CSS-aware extraction via getComputedStyle(display) on simple class rule" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for CSS :checked sibling-combinator reveal. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_a3_checked_reveal.html`, and the server-side grader compares it with the checked-in expected answer. Current probe details: no #out and no JS; answer #c 'ANSWER_CHECKED_A3' revealed purely by CSS :checked ~ sibling rule.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#c", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.forms.checkbox" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_a3_checked_reveal", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_a3_checked_reveal.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_a3_checked_reveal", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "CSS :checked sibling-combinator reveal" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for localStorage get/set. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_b1_localstorage.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.storage.local_storage" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_b1_localstorage", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_b1_localstorage.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_b1_localstorage", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "localStorage get/set" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for sessionStorage get/set. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_b2_sessionstorage.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.storage.session_storage" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_b2_sessionstorage", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_b2_sessionstorage.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_b2_sessionstorage", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "sessionStorage get/set" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for document.cookie read/write. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_b3_cookie.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.storage.cookies" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_b3_cookie", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_b3_cookie.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_b3_cookie", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "document.cookie read/write" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for DOMParser.parseFromString. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_c11_domparser.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.dom.dom_parser" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_c11_domparser", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_c11_domparser.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_c11_domparser", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "DOMParser.parseFromString" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for document.createTreeWalker. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_c12_treewalker.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.dom.traversal" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_c12_treewalker", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_c12_treewalker.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_c12_treewalker", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "document.createTreeWalker" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for Intl.NumberFormat. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_c13_intl.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.intl" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_c13_intl", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_c13_intl.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_c13_intl", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "Intl.NumberFormat" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for crypto.randomUUID. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_c14_crypto_uuid.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.crypto.random_uuid" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_c14_crypto_uuid", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_c14_crypto_uuid.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_c14_crypto_uuid", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "crypto.randomUUID" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for TextEncoder/TextDecoder. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_c17_textencoder.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.encoding.text_encoder" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_c17_textencoder", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_c17_textencoder.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_c17_textencoder", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "TextEncoder/TextDecoder" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for Range.cloneContents. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_c18_range_fragment.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.dom.range" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_c18_range_fragment", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_c18_range_fragment.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_c18_range_fragment", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "Range.cloneContents" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for case-insensitive attribute selector [a=v i]. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_c19_ci_attr.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.selectors.attribute_case_insensitive" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_c19_ci_attr", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_c19_ci_attr.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_c19_ci_attr", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "case-insensitive attribute selector [a=v i]" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for :not(:has()) selector. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_c20_not_has.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.selectors.has", "web.css.selectors.not" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_c20_not_has", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_c20_not_has.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_c20_not_has", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": ":not(:has()) selector" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for Element.matches(:has()). The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_c21_matches_has.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.selectors.has", "web.dom.matches" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_c21_matches_has", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_c21_matches_has.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_c21_matches_has", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": "Element.matches(:has())" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for :scope selector. The driver reads output from the self-hosted fixture `/fixtures/l2_round3/probe_c23_scope_sel.html`, and the server-side grader compares it with the checked-in expected answer.", "driver": { "connect_env": "BROWSER_WS", "env": { "PROBE_SPEC": { "read": "textContent", "selector": "#out", "settle": "nonempty", "settle_timeout_ms": 3000, "wait_ms": 250 } }, "kind": "node_cdp_probe", "script": "runner/scripts/l2_fixture_probe.js" }, "features": [ "web.css.selectors.scope" ], "grader": { "checks": [ "answer_matches_expected" ], "endpoint": "/__grade__/expected_answer", "kind": "server_side" }, "layer": "L2", "scene": { "fixture_id": "probe_c23_scope_sel", "kind": "self_hosted_fixture", "url": "/fixtures/l2_round3/probe_c23_scope_sel.html" }, "subset_id": "l2.web_platform", "tags": [ "purpose.diagnostic", "purpose.regression_parity", "version.v0_1" ], "task_id": "r3_probe_c23_scope_sel", "task_version": 1, "timeouts": { "hard_kill_ms": 30000, "task_ms": 20000 }, "title": ":scope selector" }, { "artifact_profile": "l2_standard", "description": "Runs a fixture-backed Web-platform semantics probe for