Add WCAB 0.15 chart-series reference case

Mirror WCAB v0.15.0 documentation, manifest, and the deterministic DrawingML chart-series fixture.

CHANGELOG.md

@@ -1,5 +1,21 @@
 # Changelog
 
+## 0.15.0 — 2026-08-03
+
+- Add a deterministic relationship-backed DrawingML chart case. Its one chart
+  at `Dashboard!D2` retains its anchor, title/category references, source
+  worksheet cells, and every package member except `xl/charts/chart1.xml`,
+  while raw `c:ser/c:val/c:numRef/c:f` switches from
+  `Source!$B$2:$B$4` to `Source!$C$2:$C$4`.
+- Add the exact `chart_series_value_reference_changed` fact, raw worksheet to
+  drawing to chart relationship validator, chart-XML isolation check, and
+  corruption regressions. WCAB records the stored source binding only: it does
+  not open Excel, calculate values, refresh chart data, render a chart, infer a
+  visual difference, or claim client behavior.
+- Extend the optional FormulaFence adapter to require its exact redacted
+  one-chart `chart_definitions_changed` profile and high-severity `FF030`,
+  while WCAB independently proves the chart source-reference transition.
+
 ## 0.14.0 — 2026-08-03
 
 - Add a deterministic relationship-backed PivotTable cache case. Its local

README.md

@@ -22,7 +22,7 @@ configs:
 # Workbook Change Assurance Benchmark (WCAB)
 
 WCAB is an open, deterministic benchmark for tools that review changes to
-Excel workbooks. Each of its 29 synthetic cases supplies a baseline workbook,
+Excel workbooks. Each of its 30 synthetic cases supplies a baseline workbook,
 a candidate workbook, explicit observable change facts, a reference review
 disposition, documented coverage boundaries, and—in relevant cases—a
 machine-matchable coverage expectation.
@@ -42,9 +42,11 @@ controls, calculation state, cycles, structural changes (including an Excel
 Table scope expansion with unchanged structured-reference text, a newly
 introduced `INDIRECT` reference, unchanged `INDIRECT`/`OFFSET` formulas whose
 dynamic selectors change, an external-data connection that begins refreshing
-when the workbook opens, and a local worksheet-backed PivotTable cache whose
+when the workbook opens, a local worksheet-backed PivotTable cache whose
 stored `refreshOnLoad` request becomes enabled while its source, stored report
-cells, and direct dashboard formula remain fixed), an unchanged external-workbook formula
+cells, and direct dashboard formula remain fixed, and a Dashboard DrawingML
+chart whose stored numeric-series reference changes while its source cells,
+anchor, and other chart references remain fixed), an unchanged external-workbook formula
 whose `never`-to-`always` open-time update policy changes, an unchanged
 direct circular formula whose iterative-calculation setting becomes enabled, an
 unchanged precision-sensitive input and formula whose calculation switches to

RESEARCH.md

@@ -187,6 +187,26 @@ cells, and package-member isolation. It does not open Excel, refresh data,
 calculate or render the PivotTable, infer a new report result, or claim that a
 client honors the setting.
 
+## Chart series sources without a worksheet edit
+
+Microsoft's [chart-series guidance](https://support.microsoft.com/en-US/Excel/rename-a-data-series)
+states that a user can change a series' values in the Select Data dialog without
+changing the worksheet data. The Open XML
+[`NumberReference` definition](https://learn.microsoft.com/en-us/dotnet/api/documentformat.openxml.drawing.charts.numberreference?view=openxml-3.0.1)
+captures the numeric-series reference in the chart part. That leaves a material
+review surface that cell and formula diffs can miss: a dashboard chart can point
+at another local range while every worksheet cell remains identical.
+
+WCAB 0.15 isolates that stored binding in an original single-chart package. A
+chart anchored at `Dashboard!D2` retains its host relationship, title reference,
+category reference, source cells, and all non-chart package members. Only its
+`c:ser/c:val/c:numRef/c:f` formula moves from `Source!$B$2:$B$4` to
+`Source!$C$2:$C$4`. The validator follows the local worksheet-to-drawing-to-
+chart relationship chain and compares raw chart XML after removing the declared
+formula text. It does not calculate a source, refresh chart data, render a
+chart, infer a visible difference, or claim that an Excel client honors the
+stored source reference.
+
 ## Array-formula semantics
 
 Microsoft's [dynamic-array versus legacy-CSE guidance](https://support.microsoft.com/en-US/Excel/dynamic-array-formulas-vs-legacy-cse-array-formulas)

docs/observations.md

@@ -188,8 +188,17 @@ and all controls except `refresh_on_load`, which moves from `false` to `true`.
 WCAB's raw validator—not the adapter—then establishes the `Source!A1:B5`
 binding, `Report!A1:B2` PivotTable location, stable stored report/dashboard
 cells, direct dashboard edge, and cache-definition-only package change.
-Neither report refreshes or renders a PivotTable. For the external-workbook
-link policy case, it requires the exact `external_data_refresh_settings_changed`
+Neither report refreshes or renders a PivotTable. For the chart-series
+case, it requires one exact `chart_definitions_changed` record and matching
+`FF030`: FormulaFence's redacted profile must retain one host sheet, one
+drawing, one legacy chart, one series, three data references, no chart cache,
+and no related payloads while only `chart_definition_material_changed` is set.
+FormulaFence does not expose a chart source formula or visual result. WCAB's
+raw validator—not the adapter—then proves the Dashboard-to-drawing-to-chart
+binding, `D2` anchor, stable title/category references, exact local
+value-reference transition, and chart-part-only package change. Neither report
+calculates or renders the chart. For the external-workbook
+policy case, it requires the exact `external_data_refresh_settings_changed`
 details: `update_links` moves from `never` to `always`, while the three other
 workbook-wide refresh controls retain their defaults. For the array-mode case,
 it requires `array_formula_mode_changed` at the exact anchor with the declared

docs/schema.md

@@ -18,7 +18,9 @@ formula-result change without a formula or input edit. WCAB 0.12 adds a raw
 workbook serial-date-system control change with unchanged cell content, WCAB
 0.13 adds an active worksheet AutoFilter criterion change with unchanged cell
 content and formulas, and WCAB 0.14 adds a relationship-backed PivotTable cache
-refresh-on-open control change with unchanged stored cells. Version 2 remains
+refresh-on-open control change with unchanged stored cells. WCAB 0.15 adds a
+relationship-backed DrawingML chart-series source-reference change with
+unchanged worksheet cells. Version 2 remains
 available in the immutable v0.2.0 and v0.3.0 releases.
 
 ```json
@@ -64,6 +66,7 @@ Facts are observed directly from the fixture files by `wcab validate`.
 | `formula_cached_result_changed` | `sheet`, `cell`, `formula`, `input_sheet`, `input_cell`, `input_value`, `result_type`, `baseline_cached_result`, `candidate_cached_result` | One raw numeric formula-cell `<v>` value changes while its raw `<f>` expression, direct input, calculation properties, and every other package member remain unchanged. The validator reads OOXML only; it does not calculate, validate, or interpret the saved result. |
 | `external_data_connection_refresh_on_load_changed` | `connection_id`, `baseline_refresh_on_load`, `candidate_refresh_on_load` | The relationship-backed connection with this workbook-local ID explicitly changes `refreshOnLoad` from `false` to `true`. The validator reads raw OOXML only. |
 | `pivot_cache_refresh_on_load_changed` | `cache_id`, `source_type`, `source_sheet`, `source_ref`, `pivot_sheet`, `pivot_ref`, `pivot_output_cell`, `dashboard_sheet`, `dashboard_cell`, `dashboard_formula`, `baseline_refresh_on_load`, `candidate_refresh_on_load` | One relationship-bound local worksheet PivotCache changes raw `refreshOnLoad` from `false` to `true`; its source binding, PivotTable location, stored report/dashboard cells, calculation properties, and every package member except its cache definition remain unchanged. The validator neither refreshes nor renders a PivotTable. |
+| `chart_series_value_reference_changed` | `chart_sheet`, `chart_anchor`, `source_sheet`, `series_title_ref`, `category_ref`, `baseline_value_ref`, `candidate_value_ref` | One relationship-bound DrawingML chart retains its host, anchor, title/category references, source worksheet cells, and every package member except its chart part while raw `c:ser/c:val/c:numRef/c:f` moves between declared local value ranges. The validator does not calculate, refresh, or render a chart. |
 | `external_workbook_link_update_policy_changed` | `sheet`, `cell`, `formula`, `baseline_update_links`, `candidate_update_links` | The declared external-workbook formula remains unchanged while raw `workbookPr/@updateLinks` changes exactly from `never` to `always`; all other stored `workbookPr` attributes are unchanged. The validator does not resolve the source workbook. |
 | `array_formula_mode_changed` | `sheet`, `cell`, `formula`, `baseline_mode`, `candidate_mode`, `baseline_output_range`, `candidate_output_range` | The declared unchanged array anchor moves from `legacy_cse` to `dynamic`, with its stored formula text and output range exactly as declared. The validator reads the raw OOXML cell-metadata binding. |
 | `static_cycle_introduced` | `cells` | Every declared direct A1 cell reaches itself in the local static dependency graph. |
@@ -167,6 +170,26 @@ changed package member. It does not execute Excel's filter logic, calculate
 the subtotal, infer a visible row set, or claim a display, copy, chart, or
 print result.
 
+## DrawingML chart-series source references
+
+Microsoft's [series-editing guidance](https://support.microsoft.com/en-US/Excel/rename-a-data-series)
+allows a user to change a chart's series values without changing the worksheet
+data. The Open XML [`NumberReference` definition](https://learn.microsoft.com/en-us/dotnet/api/documentformat.openxml.drawing.charts.numberreference?view=openxml-3.0.1)
+contains the stored formula reference used by a numeric chart series. That
+creates a report-review surface outside ordinary cell diffs.
+
+WCAB's chart pair starts with one `Dashboard!D2` chart bound through the
+worksheet drawing relationship to one DrawingML chart part. Its title and
+category references remain `Source!B1` and `Source!$A$2:$A$4`; only the one
+numeric series value reference moves from `Source!$B$2:$B$4` to
+`Source!$C$2:$C$4`. Both source columns, all worksheet cells, the drawing
+anchor, calculation properties, and every package member outside
+`xl/charts/chart1.xml` remain fixed. The validator follows only that generated
+worksheet-to-drawing-to-chart relationship chain, compares the chart XML after
+erasing the one declared reference, and never evaluates a chart formula,
+calculates cells, refreshes data, renders a chart, infers a visual difference,
+or claims client behavior.
+
 ## Iterative calculation
 
 Open XML stores calculation controls in

docs/validation.md

@@ -1,6 +1,6 @@
 # Validation record
 
-This record describes the WCAB 0.14.0 / schema-version-3 validation run on
+This record describes the WCAB 0.15.0 / schema-version-3 validation run on
 2026-08-03. It is reproducible from this repository; no network service or
 private workbook is required.
 
@@ -32,16 +32,16 @@ wcab validate --fixtures fixtures
 
 Results:
 
-- 29 cases: 28 paired-workbook cases and one directory portfolio case.
-- 31 observable truth facts across 24 `block` and five `review` cases.
+- 30 cases: 29 paired-workbook cases and one directory portfolio case.
+- 32 observable truth facts across 25 `block` and five `review` cases.
 - Three scoreable coverage expectations: one newly introduced `INDIRECT`
   boundary and two unchanged-formula selector changes (`INDIRECT` address text
   and `OFFSET` column displacement).
-- 90 generated fixture files: 60 workbooks, 29 truth manifests, and one JSONL
+- 93 generated fixture files: 62 workbooks, 30 truth manifests, and one JSONL
   case catalogue, all generated from source.
-- Eighty unit tests passed locally under Python 3.13, including
+- Eighty-seven unit tests passed locally under Python 3.13, including
   independent regeneration and byte-for-byte fixture-tree equality.
-- The fixture validator accepted all 29 cases.
+- The fixture validator accepted all 30 cases.
 - The external-data pair has identical package members except for
   `xl/connections.xml`; both archives pass ZIP integrity checks and remain
   readable by openpyxl. Its relationship-backed source is a non-routable
@@ -53,6 +53,13 @@ Results:
   `Dashboard!B4` formula are unchanged while raw `refreshOnLoad` changes from
   false to true. The validation run did not open Excel, refresh a cache,
   calculate or render a PivotTable, or infer a report result.
+- The chart-series pair has identical package members except for
+  `xl/charts/chart1.xml`; both archives pass ZIP integrity checks and remain
+  readable by openpyxl. Its `Dashboard!D2` anchor, title/category references,
+  source cells, and all worksheet parts remain unchanged while raw
+  `c:ser/c:val/c:numRef/c:f` moves from `Source!$B$2:$B$4` to
+  `Source!$C$2:$C$4`. The validation run did not open Excel, calculate source
+  cells, refresh chart data, render a chart, or infer a visual difference.
 - The external-workbook-link policy pair has identical package members except
   for `xl/workbook.xml`; both archives pass ZIP integrity checks and remain
   readable by openpyxl. Its unchanged `LinkedModel!B2` formula names the
@@ -99,7 +106,7 @@ Results:
 
 ## Distribution supplement
 
-The 0.14.0 release retains the one-row-per-case `manifest.jsonl` catalogue and
+The 0.15.0 release retains the one-row-per-case `manifest.jsonl` catalogue and
 the tool-neutral observation protocol at version 2. Each catalogue row retains
 the schema-version-3 truth contract and includes byte counts and SHA-256
 digests for the workbooks it names.
@@ -107,11 +114,11 @@ digests for the workbooks it names.
 Commands:
 
 ```bash
-python -m build --outdir /tmp/wcab-v014-dist
-twine check /tmp/wcab-v014-dist/*
+python -m build --outdir /tmp/wcab-v015-dist
+twine check /tmp/wcab-v015-dist/*
 python -m venv /tmp/wcab-wheel-test
 /tmp/wcab-wheel-test/bin/python -m pip install \
-  /tmp/wcab-v014-dist/workbook_change_benchmark-0.14.0-py3-none-any.whl
+  /tmp/wcab-v015-dist/workbook_change_benchmark-0.15.0-py3-none-any.whl
 /tmp/wcab-wheel-test/bin/wcab validate --fixtures fixtures
 /tmp/wcab-wheel-test/bin/wcab manifest --fixtures fixtures --output /tmp/manifest.jsonl
 cmp fixtures/manifest.jsonl /tmp/manifest.jsonl
@@ -125,14 +132,14 @@ Results:
 
 - The source distribution and universal wheel passed `twine check`.
 - Fresh Python 3.13 wheel and source-distribution installations both reported
-  version 0.14.0 and validated all 29 fixtures; the wheel emitted
+  version 0.15.0 and validated all 30 fixtures; the wheel emitted
   byte-identical JSONL output.
-- The full eighty-test suite, lint, and format checks passed locally under
+- The full eighty-seven-test suite, lint, and format checks passed locally under
   Python 3.13 and in hosted release CI under Python 3.10 and 3.13.
 - The generated unsupported template scored as zero analyzed coverage, zero
   expected-fact recall, and zero coverage-disclosure recall, confirming that
   unsupported cases cannot become a pass.
-- The FormulaFence normalizer emitted 30 matched facts, one intentionally
+- The FormulaFence normalizer emitted 31 matched facts, one intentionally
   unmapped fact, three matched coverage declarations, and no invented review
   disposition.
 
@@ -147,9 +154,9 @@ wcab formulafence --fixtures fixtures --strict
 
 Results:
 
-- All 30 currently mappable diff/portfolio facts were observed.
+- All 31 currently mappable diff/portfolio facts were observed.
 - All three mappable coverage expectations were matched; no mapped fact,
-  coverage expectation, or targeted lint rule was missed across all 29 cases.
+  coverage expectation, or targeted lint rule was missed across all 30 cases.
 - The schema-version-2 structured Table scope case was observed as a
   `table_definition_changed` diff, even though its summary formula text stays
   unchanged.
@@ -171,6 +178,15 @@ Results:
   emitted no parser warning. WCAB's independent raw validation established the
   source and PivotTable binding, stable stored cells, and cache-definition-only
   package change. Neither report refreshed or rendered a PivotTable.
+- The WCAB 0.15 chart-series case was observed as one exact
+  `chart_definitions_changed` record and `FF030`. FormulaFence's redacted
+  profile retained one host sheet, drawing, legacy chart, and series; three
+  data references; no chart cache; and no related payloads, while only its
+  chart-definition material changed. FormulaFence did not expose the source
+  formula or a visual result. WCAB independently established the local
+  relationship chain, `D2` anchor, title/category references, exact value
+  reference transition, and chart-part-only package change. Neither report
+  calculated or rendered a chart.
 - The WCAB 0.8 external-workbook-link policy case was observed as one exact
   `external_data_refresh_settings_changed` transition in `FF023`: only
   `update_links` moved from `never` to `always`; `allow_refresh_query`,

fixtures/manifest.jsonl

@@ -21,6 +21,7 @@
 {"baseline_files":[{"bytes":5465,"path":"operations/sumifs_range_shape/baseline.xlsx","sha256":"1fab22c80b1384cfe921e75c858934204435c31d7b5c67766c984289610901db"}],"candidate_files":[{"bytes":5469,"path":"operations/sumifs_range_shape/candidate.xlsx","sha256":"618613d92e354f3e7ccc7ef07d4c33f0f1b6ffeccbbd9e3f68e0b54c6dffb7c2"}],"case_path":"operations/sumifs_range_shape","coverage":["The range-shape defect is deliberately static and does not require evaluating SUMIFS."],"coverage_expectations":[],"facts":[{"cell":"H6","kind":"formula_changed","sheet":"Operations"}],"family":"operations","id":"operations.sumifs_range_shape","must_reach":[],"review_expectation":"block","schema_version":3,"title":"A conditional aggregate has mismatched static ranges","topology":"pair"}
 {"baseline_files":[{"bytes":4931,"path":"portfolio/external_driver_value_change/baseline/drivers.xlsx","sha256":"c2e6b4e9b2d70578ffd55df2de557107c55cf699fd1f94b54516c2f2854d3c99"},{"bytes":4996,"path":"portfolio/external_driver_value_change/baseline/model.xlsx","sha256":"7f253818e74ca955160ac3bbcfa4c7c25537f677fe157f9e2e30457c159ff21a"}],"candidate_files":[{"bytes":4931,"path":"portfolio/external_driver_value_change/candidate/drivers.xlsx","sha256":"0de0551f28366457c428b24b073074821576ea226841d5dd6f40c1d67c97c552"},{"bytes":4996,"path":"portfolio/external_driver_value_change/candidate/model.xlsx","sha256":"7f253818e74ca955160ac3bbcfa4c7c25537f677fe157f9e2e30457c159ff21a"}],"case_path":"portfolio/external_driver_value_change","coverage":["The target workbook is present only as a local sibling; no network or filesystem path resolution is permitted."],"coverage_expectations":[],"facts":[{"cell":"B2","kind":"portfolio_value_changed","sheet":"Inputs","workbook":"drivers.xlsx"},{"cell":"B2","kind":"portfolio_external_reference","sheet":"Summary","target_workbook":"drivers.xlsx","workbook":"model.xlsx"}],"family":"portfolio","id":"portfolio.external_driver_value_change","must_reach":[],"review_expectation":"review","schema_version":3,"title":"An upstream workbook driver changes while a downstream workbook consumes it","topology":"portfolio"}
 {"baseline_files":[{"bytes":5941,"path":"structural/array_formula_mode_changed/baseline.xlsx","sha256":"e6dbd55fac6f09fd7bdc79bf2311df9c6498742b0c7be20772650ec3ab1d7328"}],"candidate_files":[{"bytes":6510,"path":"structural/array_formula_mode_changed/candidate.xlsx","sha256":"b9b149c015e51225538dcef761dc3aab093cffb6d379d4521703455509dea0ba"}],"case_path":"structural/array_formula_mode_changed","coverage":["The legacy CSE range and the candidate's currently stored output range coincide; a dynamic array can resize or be blocked when Excel recalculates.","The validator checks stored formula mode and metadata only. It does not calculate a result, predict a future spill extent, identify blockers, or assert client-version compatibility."],"coverage_expectations":[],"facts":[{"baseline_mode":"legacy_cse","baseline_output_range":"B1:B3","candidate_mode":"dynamic","candidate_output_range":"B1:B3","cell":"B1","formula":"=LEN(Inputs!A1:A3)","kind":"array_formula_mode_changed","sheet":"Model"}],"family":"structural","id":"structural.array_formula_mode_changed","must_reach":[{"source":{"cell":"B1","sheet":"Model"},"targets":[{"cell":"B2","sheet":"Dashboard"}]}],"review_expectation":"block","schema_version":3,"title":"An unchanged array formula switches from fixed CSE to dynamic spill semantics","topology":"pair"}
+{"baseline_files":[{"bytes":7154,"path":"structural/chart_series_reference_changed/baseline.xlsx","sha256":"007acec1ad609b529b666789200cef53e31359a7640ed0bbf45866a8fa78047e"}],"candidate_files":[{"bytes":7154,"path":"structural/chart_series_reference_changed/candidate.xlsx","sha256":"7566c299b6a6dad299a0b49b6a84eb21a9b0b99f81adaebff8b8c751eab0fc2b"}],"case_path":"structural/chart_series_reference_changed","coverage":["The pair changes only the raw DrawingML c:ser/c:val/c:numRef/c:f value-reference text in one chart part. It does not edit worksheet cells, chart anchor, category/title references, or calculation properties.","A chart-series source reference is stored report-binding evidence. WCAB does not open Excel, calculate values, refresh chart data, render a chart, infer a visual difference, or claim any client will use the stored reference.","The validator follows the local worksheet-to-drawing-to-chart relationship chain and compares raw chart XML after removing the declared value reference. It does not resolve arbitrary chart formulas or add chart references to the formula dependency graph."],"coverage_expectations":[],"facts":[{"baseline_value_ref":"'Source'!$B$2:$B$4","candidate_value_ref":"'Source'!$C$2:$C$4","category_ref":"'Source'!$A$2:$A$4","chart_anchor":"D2","chart_sheet":"Dashboard","kind":"chart_series_value_reference_changed","series_title_ref":"'Source'!B1","source_sheet":"Source"}],"family":"structural","id":"structural.chart_series_reference_changed","must_reach":[],"review_expectation":"block","schema_version":3,"title":"A dashboard chart switches to a different local value series","topology":"pair"}
 {"baseline_files":[{"bytes":6419,"path":"structural/dynamic_reference_introduced/baseline.xlsx","sha256":"1e291d291d05eadf41435e87a2b43e4f3f4013e03ba75c48b69c92e4811f4501"}],"candidate_files":[{"bytes":6434,"path":"structural/dynamic_reference_introduced/candidate.xlsx","sha256":"2d02d979257a346c5e1a236b687ce826ed23652a2012f93a46e9c1918459ee8e"}],"case_path":"structural/dynamic_reference_introduced","coverage":["INDIRECT returns a reference from workbook text; this fixture does not evaluate that text or claim complete target resolution.","The scoreable coverage expectation requires an explicit static-dependency boundary disclosure, not a universal formula-evaluation claim."],"coverage_expectations":[{"cell":"B2","functions":["INDIRECT"],"kind":"dynamic_reference_static_coverage","sheet":"Summary"}],"facts":[{"cell":"B2","functions":["INDIRECT"],"kind":"dynamic_formula_reference_added","sheet":"Summary"}],"family":"structural","id":"structural.dynamic_reference_introduced","must_reach":[{"source":{"cell":"B2","sheet":"Summary"},"targets":[{"cell":"B4","sheet":"Dashboard"}]}],"review_expectation":"block","schema_version":3,"title":"A direct output reference becomes an INDIRECT-driven reference","topology":"pair"}
 {"baseline_files":[{"bytes":5444,"path":"structural/formula_rewrite_after_column_insert/baseline.xlsx","sha256":"fdb943445413906a89a7d2f130479c76d4832d9d5fe5e29f48e14a20e179ef77"}],"candidate_files":[{"bytes":5470,"path":"structural/formula_rewrite_after_column_insert/candidate.xlsx","sha256":"2557635a4d87da56f488709390d1c6fdef754228549d3d9bf19a74ef8882df72"}],"case_path":"structural/formula_rewrite_after_column_insert","coverage":["The fixture declares equivalent logical input positions but does not prove general Excel semantic equivalence."],"coverage_expectations":[],"facts":[{"baseline":{"cell":"D5","formula":"=B5*C5","sheet":"Model"},"candidate":{"cell":"E5","formula":"=B5*D5","sheet":"Model"},"kind":"structural_formula_rewrite"}],"family":"structural","id":"structural.formula_rewrite_after_column_insert","must_reach":[],"review_expectation":"review","schema_version":3,"title":"A column insertion rewrites formulas while retaining the declared inputs","topology":"pair"}
 {"baseline_files":[{"bytes":6444,"path":"structural/indirect_reference_driver_changed/baseline.xlsx","sha256":"1b87328d43dfc38cfc4541a45f7717033737a13883f3af5fbb128a70e3b365a4"}],"candidate_files":[{"bytes":6445,"path":"structural/indirect_reference_driver_changed/candidate.xlsx","sha256":"970b0e8f54ea7afb1b4289c13d8977c614fa1074e589e056bf23bd24b5811b62"}],"case_path":"structural/indirect_reference_driver_changed","coverage":["INDIRECT returns a reference from workbook text; this fixture does not evaluate or calculate the selected address.","The unchanged formula still directly reads the changed driver, but its effective target selection is outside a complete static dependency graph."],"coverage_expectations":[{"driver":{"cell":"E12","sheet":"Inputs"},"formula":{"cell":"B2","sheet":"Summary"},"functions":["INDIRECT"],"kind":"dynamic_reference_driver_changed"}],"facts":[{"cell":"E12","kind":"value_changed","sheet":"Inputs"}],"family":"structural","id":"structural.indirect_reference_driver_changed","must_reach":[{"source":{"cell":"E12","sheet":"Inputs"},"targets":[{"cell":"B2","sheet":"Summary"},{"cell":"B4","sheet":"Dashboard"}]}],"review_expectation":"block","schema_version":3,"title":"An unchanged INDIRECT formula receives a different address driver","topology":"pair"}

fixtures/structural/chart_series_reference_changed/truth.json

@@ -0,0 +1,27 @@
+{
+  "coverage": [
+    "The pair changes only the raw DrawingML c:ser/c:val/c:numRef/c:f value-reference text in one chart part. It does not edit worksheet cells, chart anchor, category/title references, or calculation properties.",
+    "A chart-series source reference is stored report-binding evidence. WCAB does not open Excel, calculate values, refresh chart data, render a chart, infer a visual difference, or claim any client will use the stored reference.",
+    "The validator follows the local worksheet-to-drawing-to-chart relationship chain and compares raw chart XML after removing the declared value reference. It does not resolve arbitrary chart formulas or add chart references to the formula dependency graph."
+  ],
+  "coverage_expectations": [],
+  "facts": [
+    {
+      "baseline_value_ref": "'Source'!$B$2:$B$4",
+      "candidate_value_ref": "'Source'!$C$2:$C$4",
+      "category_ref": "'Source'!$A$2:$A$4",
+      "chart_anchor": "D2",
+      "chart_sheet": "Dashboard",
+      "kind": "chart_series_value_reference_changed",
+      "series_title_ref": "'Source'!B1",
+      "source_sheet": "Source"
+    }
+  ],
+  "family": "structural",
+  "id": "structural.chart_series_reference_changed",
+  "must_reach": [],
+  "review_expectation": "block",
+  "schema_version": 3,
+  "title": "A dashboard chart switches to a different local value series",
+  "topology": "pair"
+}

manifest.jsonl

@@ -21,6 +21,7 @@
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