Add package signature relationship selector benchmark v0.39.0

CHANGELOG.md

@@ -1,5 +1,27 @@
 # Changelog
 
+## 0.39.0 — 2026-08-03
+
+- Add a deterministic OPC package-signature relationship-selector retarget.
+  Its one `Object/Manifest` root-relationships reference retains the URI and
+  an exact Relationships Transform followed immediately by XML C14N while its
+  sole `RelationshipReference/@SourceId` moves from the root office-document
+  relationship to the root signature-origin relationship. The signature graph,
+  ordinary cells/formula context, calculation properties, and every package
+  member except `_xmlsignatures/sig1.xml` remain fixed.
+- Add the exact
+  `package_signature_manifest_relationship_selector_retargeted` fact,
+  raw-OOXML structural validator, selector-only signature-envelope comparison,
+  package-isolation check, and corruption regressions. A selected relationship
+  entry is not proof its target part was signed; WCAB does not execute a
+  transform or verify a digest, signature, certificate, identity, trust chain,
+  or consumer decision.
+- Extend the optional FormulaFence adapter to require exact high-severity
+  `digital_signature_controls_changed` / `FF050` evidence despite equal
+  redacted aggregate selector counts before and after. The adapter requires
+  the separate Manifest-coverage-change signal and never relies on a URI,
+  source ID, digest, certificate, or trust assertion.
+
 ## 0.38.0 — 2026-08-02
 
 - Add a deterministic OPC package-signature Manifest-scope transition. Its

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 55 synthetic cases supplies baseline/candidate
+Excel workbooks. Each of its 56 synthetic cases supplies baseline/candidate
 fixtures, explicit observable change facts, a reference review
 disposition, documented coverage boundaries, and—in relevant cases—a
 machine-matchable coverage expectation.
@@ -54,6 +54,10 @@ package-signature `Object/Manifest` declaration whose one direct-part URI moves
 from the workbook part to a worksheet part while its bounded signature graph
 and ordinary workbook context remain fixed (with deliberately synthetic digest
 and signature values, so this is not cryptographic or trust validation), a
+second package-signature Manifest whose root-relationships selector moves
+between two relationship entries while its URI, Relationships Transform plus
+C14N sequence, and all published selector counts remain fixed (also no
+transform execution or trust validation), a
 local worksheet-backed PivotTable cache whose
 stored `refreshOnLoad` request becomes enabled while its source, stored report
 cells, and direct dashboard formula remain fixed, a local PivotTable value

RESEARCH.md

@@ -136,10 +136,20 @@ content types, one `SignedInfo` local-object reference, ordinary
 and all package members except `_xmlsignatures/sig1.xml` remain fixed. Only one
 `Object/Manifest/Reference/@URI` moves from the direct workbook part to the
 direct worksheet part. The raw validator checks that bounded local declaration
-and compares the signature XML after erasing only that URI. The digest and
-signature values are deliberately synthetic: this is not a cryptographic
-verification, transform evaluation, certificate/identity check, trust-chain
-assessment, or package-consumer decision.
+and compares the signature XML after erasing only that URI.
+
+WCAB 0.39 adds the complementary relationship-selector boundary: the Manifest
+URI names the root relationships part and its XMLDSIG transform sequence is one
+OPC Relationships Transform immediately followed by XML C14N. Only its
+`RelationshipReference/@SourceId` changes, selecting the root office-document
+relationship before and the root signature-origin relationship after. A
+selector identifies a relationship entry rather than proving its target part
+was signed, and the redacted aggregate selector counts intentionally remain
+equal. The raw validator checks only that bounded local structure and compares
+the envelope after erasing the source ID. The digest and signature values in
+both fixtures are deliberately synthetic: neither package-signature case is a
+cryptographic verification, transform evaluation, certificate/identity check,
+trust-chain assessment, or package-consumer decision.
 
 ## External sources can hide in defined names without an externalLink part
 

docs/observations.md

@@ -202,7 +202,19 @@ certificate, identity, or trust assertion. WCAB's raw validator—not the
 adapter—then establishes the synthetic URI transition, fixed bounded package
 shape, stable cells/formula, and `_xmlsignatures/sig1.xml`-only boundary.
 Neither report validates a digest, signature, transform, certificate, trust
-chain, or consumer decision. For the QueryTable case,
+chain, or consumer decision. For the package-signature relationship-selector
+case, the adapter likewise requires one high-severity
+`digital_signature_controls_changed` record and `FF050`, but its before/after
+profiles must be exactly equal: one Manifest reference, one relationship
+reference, zero direct-part references, one origin, one XML signature, and no
+certificate/VBA/unrecognized evidence. It accepts the case only when the
+separate package-signature material and Manifest-coverage flags are both true.
+FormulaFence exposes no URI, selector, digest, signature value, certificate,
+identity, or trust assertion; WCAB's raw validator independently establishes
+the root-relationship source-ID retarget, exact transform sequence, and
+`_xmlsignatures/sig1.xml`-only boundary. Neither report executes a transform
+or validates a digest, signature, certificate, trust chain, or consumer
+decision. For the QueryTable case,
 it requires one exact `query_table_refresh_controls_changed` record and
 matching `FF023`: its redacted profile must retain one
 `ImportedData` table, connection ID 1, fixed refresh/edit/fill/growth controls,

docs/schema.md

@@ -81,8 +81,11 @@ with unchanged connection controls, saved cells, formulas, and every package
 member except `xl/connections.xml`; it records only the stored endpoint
 declaration without contacting it. WCAB 0.38 adds a structurally shaped OPC
 package-signature `Object/Manifest` direct-part transition with fixed
-relationship graph and ordinary workbook context; it records only the
-declared package scope, never cryptographic verification or a trust decision.
+relationship graph and ordinary workbook context. WCAB 0.39 adds a
+complementary root-relationships selector retarget with a Relationships
+Transform immediately followed by C14N; it deliberately keeps every published
+aggregate selector count equal. Each records only a declared structural package
+scope, never cryptographic verification or a trust decision.
 Version 2 remains
 available in the immutable v0.2.0 and v0.3.0 releases.
 
@@ -141,6 +144,7 @@ Facts are observed directly from the fixture files by `wcab validate`.
 | `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. |
 | `external_data_connection_web_query_url_changed` | `connection_id`, `connection_member`, `connection_content_type`, `workbook_relationships_member`, `relationship_id`, `relationship_type`, `refresh_on_load`, `baseline_url`, `candidate_url`, `saved_value_sheet`, `saved_value_cell`, `saved_value`, `summary_sheet`, `summary_cell`, `summary_formula`, `dashboard_sheet`, `dashboard_cell`, `dashboard_formula` | One relationship-backed web-query connection retains its ID, type, refresh controls, relationship, content type, stored imported cell, ordinary formulas, calculation properties, and every package member except `xl/connections.xml` while raw `webPr/@url` moves between declared reserved URLs. The validator reads local OOXML only; it does not resolve, open, fetch, authenticate to, trust, refresh, calculate, or claim a client result. |
 | `package_signature_manifest_direct_part_retargeted` | `root_relationships_member`, `origin_member`, `origin_relationships_member`, `origin_relationship_id`, `origin_relationship_type`, `signature_member`, `signature_relationship_id`, `signature_relationship_type`, `signature_content_type`, `signed_info_reference_uri`, `baseline_manifest_uri`, `candidate_manifest_uri`, `baseline_direct_part_class`, `candidate_direct_part_class`, `stable_sheet`, `stable_value_cell`, `stable_value`, `stable_formula_cell`, `stable_formula` | One structurally shaped OPC digital-signature envelope retains its origin/signature relationship graph, content types, `SignedInfo` local-object reference, ordinary cells/formula context, calculation properties, and every package member except `_xmlsignatures/sig1.xml` while its one `Object/Manifest` direct-part URI moves from the workbook part to a worksheet part. The fixture's digest/signature values are synthetic; the validator does not verify cryptography, transforms, certificates, identity, trust, or a consumer decision. |
+| `package_signature_manifest_relationship_selector_retargeted` | `root_relationships_member`, `origin_member`, `origin_relationships_member`, `origin_relationship_id`, `origin_relationship_type`, `signature_member`, `signature_relationship_id`, `signature_relationship_type`, `signature_content_type`, `signed_info_reference_uri`, `manifest_uri`, `relationship_transform_algorithm`, `canonicalization_algorithm`, `office_document_relationship_id`, `office_document_relationship_type`, `office_document_relationship_target`, `baseline_selector_source_id`, `candidate_selector_source_id`, `baseline_selected_relationship_type`, `baseline_selected_relationship_target`, `candidate_selected_relationship_type`, `candidate_selected_relationship_target`, `stable_sheet`, `stable_value_cell`, `stable_value`, `stable_formula_cell`, `stable_formula` | One structurally shaped OPC digital-signature envelope retains its package graph, Manifest URI, Relationships Transform followed immediately by C14N, ordinary cells/formula context, calculation properties, and every package member except `_xmlsignatures/sig1.xml` while one root-relationship selector `SourceId` changes. The selector identifies a relationship entry, not proof its target part was signed. The fixture's digest/signature values are synthetic; the validator neither executes transforms nor verifies cryptography, certificates, identity, trust, or a consumer decision. |
 | `query_table_refresh_on_load_changed` | `sheet`, `connection_id`, `connection_member`, `connection_url`, `query_table_member`, `worksheet_member`, `worksheet_relationships_member`, `relationship_id`, `relationship_type`, `baseline_refresh_on_load`, `candidate_refresh_on_load`, `background_refresh`, `refresh_disabled`, `remove_data_on_save`, `fill_formulas`, `connection_edit_disabled`, `growth_behavior`, `saved_value_cell`, `saved_value`, `summary_sheet`, `summary_cell`, `summary_formula`, `dashboard_sheet`, `dashboard_cell`, `dashboard_formula` | One direct internal worksheet QueryTable relationship and one fixed internal workbook connection retain their controls, saved cells, formulas, calculation properties, and every package member except the QueryTable part while raw `queryTable/@refreshOnLoad` changes from `false` to `true`. The validator does not open a connection, fetch a URL, refresh, materialize data, calculate, or claim a client result. |
 | `cell_hyperlink_target_changed` | `sheet`, `cell`, `cell_value`, `worksheet_member`, `worksheet_relationships_member`, `relationship_id`, `relationship_type`, `target_mode`, `baseline_target`, `candidate_target`, `summary_sheet`, `summary_cell`, `summary_formula`, `dashboard_sheet`, `dashboard_cell`, `dashboard_formula` | One worksheet `hyperlink` declaration retains its visible cell value, relationship ID/type/mode, no local location/display/tooltip, formulas, calculation properties, and every package member except its worksheet relationship part while the one external relationship `Target` moves between the declared reserved URLs. The validator does not resolve, open, fetch, visit, execute, calculate, or claim that a client follows a target. |
 | `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. |
@@ -617,6 +621,17 @@ direct worksheet part. The raw validator verifies that bounded structural
 shape, compares the signature XML after erasing only that URI, and never emits
 the raw URI through an adapter contract.
 
+WCAB 0.39 uses the same bounded signature graph, local-object reference, and
+ordinary workbook context but fixes the Manifest URI to the root relationships
+part. Its Manifest has exactly one OPC Relationships Transform followed
+immediately by XML C14N. Only the transform's
+`RelationshipReference/@SourceId` changes, from the root office-document
+relationship to the root signature-origin relationship. The validator compares
+the signature XML after erasing only that source ID. The selected relationship
+is a declaration of an entry in `_rels/.rels`, not evidence that the entry's
+target part was signed; an adapter sees only the redacted equal-count aggregate
+and the separate Manifest-coverage-change flag.
+
 The generated digest and signature values are deliberately synthetic. WCAB
 does not validate a digest, signature, canonicalization, transform, certificate,
 identity, revocation, trust chain, timestamp, policy, or a package consumer's

docs/validation.md

@@ -1,6 +1,6 @@
 # Validation record
 
-This record describes the WCAB 0.38.0 / schema-version-3 validation run. It is
+This record describes the WCAB 0.39.0 / schema-version-3 validation run. It is
 reproducible from this repository; no network service or private workbook is
 required.
 
@@ -32,16 +32,16 @@ wcab validate --fixtures fixtures
 
 Results:
 
-- 55 cases: 54 paired-workbook cases and one directory portfolio case.
-- 57 observable truth facts across 45 `block` and 10 `review` cases.
+- 56 cases: 55 paired-workbook cases and one directory portfolio case.
+- 58 observable truth facts across 46 `block` and 10 `review` cases.
 - Three scoreable coverage expectations: one newly introduced `INDIRECT`
   boundary and two unchanged-formula selector changes (`INDIRECT` address text
   and `OFFSET` column displacement).
-- 168 generated fixture files: 112 workbooks, 55 truth manifests, and one JSONL
+- 171 generated fixture files: 114 workbooks, 56 truth manifests, and one JSONL
   case catalogue, all generated from source.
-- Two hundred fifty-eight unit tests passed locally under Python 3.13, including
+- Two hundred sixty-two unit tests passed locally under Python 3.13, including
   independent regeneration and byte-for-byte fixture-tree equality.
-- The fixture validator accepted all 55 cases.
+- The fixture validator accepted all 56 cases.
 - The external-data refresh 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
@@ -67,6 +67,18 @@ Results:
   worksheet part. The generated digest and signature values are synthetic: the
   validation run does not verify a digest, signature, transform, certificate,
   identity, trust chain, or consumer decision.
+- The OPC package-signature relationship-selector pair likewise has identical
+  package members except `_xmlsignatures/sig1.xml`; both archives pass ZIP
+  integrity checks and remain readable by openpyxl. Its root-to-origin and
+  origin-to-signature relationships, content types, `SignedInfo` local-object
+  reference, Manifest URI, one Relationships Transform immediately followed by
+  XML C14N, stable `Controls!B10=12` value and `Controls!D10=B10*C10` formula,
+  and calculation properties remain fixed while the sole
+  `RelationshipReference/@SourceId` selects the root office-document
+  relationship before and the root signature-origin relationship after. The
+  selected relationship is not proof its target part was signed; the validation
+  run does not execute a transform or verify a digest, signature, certificate,
+  identity, trust chain, or consumer decision.
 - The QueryTable pair has identical package members except for
   `xl/queryTables/queryTable1.xml`; both archives pass ZIP integrity checks and
   remain readable by openpyxl. Its direct `ImportedData` worksheet-to-QueryTable
@@ -349,7 +361,7 @@ Results:
 
 ## Distribution supplement
 
-The 0.38.0 release retains the one-row-per-case `manifest.jsonl` catalogue and
+The 0.39.0 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.
@@ -357,26 +369,26 @@ digests for the workbooks it names.
 Commands:
 
 ```bash
-python -m build --outdir /tmp/wcab-v038-dist
-twine check /tmp/wcab-v038-dist/*
-python -m venv /tmp/wcab-v038-wheel-test
-/tmp/wcab-v038-wheel-test/bin/python -m pip install \
-  /tmp/wcab-v038-dist/workbook_change_benchmark-0.38.0-py3-none-any.whl
-/tmp/wcab-v038-wheel-test/bin/python -c 'import wcab; print(wcab.__version__)'
-/tmp/wcab-v038-wheel-test/bin/wcab validate --fixtures fixtures
-/tmp/wcab-v038-wheel-test/bin/wcab manifest --fixtures fixtures --output /tmp/wcab-v038-wheel-manifest.jsonl
-cmp fixtures/manifest.jsonl /tmp/wcab-v038-wheel-manifest.jsonl
-/tmp/wcab-v038-wheel-test/bin/wcab observation-template --fixtures fixtures \
-  --output /tmp/wcab-v038-wheel-observations.json
-/tmp/wcab-v038-wheel-test/bin/wcab score --fixtures fixtures \
-  --observations /tmp/wcab-v038-wheel-observations.json
-python -m venv /tmp/wcab-v038-sdist-test
-/tmp/wcab-v038-sdist-test/bin/python -m pip install \
-  /tmp/wcab-v038-dist/workbook_change_benchmark-0.38.0.tar.gz
-/tmp/wcab-v038-sdist-test/bin/python -c 'import wcab; print(wcab.__version__)'
-/tmp/wcab-v038-sdist-test/bin/wcab validate --fixtures fixtures
-/tmp/wcab-v038-sdist-test/bin/wcab manifest --fixtures fixtures --output /tmp/wcab-v038-sdist-manifest.jsonl
-cmp fixtures/manifest.jsonl /tmp/wcab-v038-sdist-manifest.jsonl
+python -m build --outdir /tmp/wcab-v039-dist
+twine check /tmp/wcab-v039-dist/*
+python -m venv /tmp/wcab-v039-wheel-test
+/tmp/wcab-v039-wheel-test/bin/python -m pip install \
+  /tmp/wcab-v039-dist/workbook_change_benchmark-0.39.0-py3-none-any.whl
+/tmp/wcab-v039-wheel-test/bin/python -c 'import wcab; print(wcab.__version__)'
+/tmp/wcab-v039-wheel-test/bin/wcab validate --fixtures fixtures
+/tmp/wcab-v039-wheel-test/bin/wcab manifest --fixtures fixtures --output /tmp/wcab-v039-wheel-manifest.jsonl
+cmp fixtures/manifest.jsonl /tmp/wcab-v039-wheel-manifest.jsonl
+/tmp/wcab-v039-wheel-test/bin/wcab observation-template --fixtures fixtures \
+  --output /tmp/wcab-v039-wheel-observations.json
+/tmp/wcab-v039-wheel-test/bin/wcab score --fixtures fixtures \
+  --observations /tmp/wcab-v039-wheel-observations.json
+python -m venv /tmp/wcab-v039-sdist-test
+/tmp/wcab-v039-sdist-test/bin/python -m pip install \
+  /tmp/wcab-v039-dist/workbook_change_benchmark-0.39.0.tar.gz
+/tmp/wcab-v039-sdist-test/bin/python -c 'import wcab; print(wcab.__version__)'
+/tmp/wcab-v039-sdist-test/bin/wcab validate --fixtures fixtures
+/tmp/wcab-v039-sdist-test/bin/wcab manifest --fixtures fixtures --output /tmp/wcab-v039-sdist-manifest.jsonl
+cmp fixtures/manifest.jsonl /tmp/wcab-v039-sdist-manifest.jsonl
 ```
 
 Results:
@@ -386,20 +398,20 @@ Results:
   their uploaded assets in the GitHub release, avoiding a self-referential
   source-distribution checksum in this record.
 - Fresh Python 3.13 wheel and source-distribution installations both reported
-  version 0.38.0 and validated all 55 fixtures; both emitted byte-identical
+  version 0.39.0 and validated all 56 fixtures; both emitted byte-identical
   JSONL output.
-- The full 258-test suite, lint, and format checks passed locally under Python
+- The full 262-test suite, lint, and format checks passed locally under Python
   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 56 matched facts, one intentionally
+- The FormulaFence normalizer emitted 57 matched facts, one intentionally
   unmapped fact, three matched coverage declarations, and no invented review
   disposition.
 
 ## FormulaFence reference adapter
 
-FormulaFence 0.222.0 was installed from the local checked-out release source
+FormulaFence 0.223.0 was installed from the local checked-out release source
 and invoked only against WCAB's generated files:
 
 ```bash
@@ -408,9 +420,9 @@ wcab formulafence --fixtures fixtures --strict
 
 Results:
 
-- All 56 currently mappable diff/portfolio facts were observed.
+- All 57 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 55 cases.
+  coverage expectation, or targeted lint rule was missed across all 56 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.
@@ -488,6 +500,20 @@ Results:
   types/local-object reference/cells/formula, and
   `_xmlsignatures/sig1.xml`-only boundary; neither report verified a digest,
   signature, transform, certificate, trust chain, or consumer decision.
+- The WCAB 0.39 package-signature relationship-selector case was observed as
+  one exact high-severity `digital_signature_controls_changed` record and
+  `FF050`. FormulaFence's redacted before/after profiles were exactly equal:
+  one signature origin, one XML signature, one Manifest relationship reference,
+  zero direct-part references, no certificates, no VBA-project signatures, and
+  no unrecognized signature evidence. Its distinct
+  `package_signature_manifest_coverage_changed=true` signal still exposed the
+  material retarget. It exposed no URI, selector, digest, signature value,
+  certificate, identity, or trust assertion. WCAB independently established
+  the synthetic root-relationship source-ID transition, required
+  Relationships-Transform-plus-C14N sequence, fixed graph/cells/formula, and
+  `_xmlsignatures/sig1.xml`-only boundary; neither report executed a transform
+  or verified a digest, signature, certificate, trust chain, or consumer
+  decision.
 - The WCAB 0.30 QueryTable case was observed as one exact
   `query_table_refresh_controls_changed` record and `FF023`: FormulaFence's
   redacted profile retained one `ImportedData` table, connection ID 1, fixed

fixtures/governance/package_signature_relationship_selector_retargeted/truth.json

@@ -0,0 +1,47 @@
+{
+  "coverage": [
+    "The pair changes only _xmlsignatures/sig1.xml: one Object/Manifest Relationships Transform selector moves from the root officeDocument relationship to the root digital-signature-origin relationship. The manifest URI, required following C14N transform, root/origin graph, XML signature shape, ordinary cells, formulas, and every other package member stay fixed.",
+    "A relationship selector identifies a Relationship entry, not proof that its target part was signed. The XMLDSIG digest and signature values are deliberately synthetic; the validator does not execute a transform, verify cryptography, assess digest values, certificates, identity/trust, or a package consumer decision.",
+    "The raw selector IDs are public WCAB truth used only by its local validator. An adapter must instead require FormulaFence's redacted equal-count aggregate plus a Manifest-coverage-change signal and FF050 evidence; it must never require a URI, selector, digest, certificate, or trust assertion."
+  ],
+  "coverage_expectations": [],
+  "facts": [
+    {
+      "baseline_selected_relationship_target": "xl/workbook.xml",
+      "baseline_selected_relationship_type": "http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument",
+      "baseline_selector_source_id": "rIdWCABOfficeDocument",
+      "candidate_selected_relationship_target": "_xmlsignatures/origin.sigs",
+      "candidate_selected_relationship_type": "http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/origin",
+      "candidate_selector_source_id": "rIdWCABPackageSignatureOrigin",
+      "canonicalization_algorithm": "http://www.w3.org/TR/2001/REC-xml-c14n-20010315",
+      "kind": "package_signature_manifest_relationship_selector_retargeted",
+      "manifest_uri": "/_rels/.rels?ContentType=application/vnd.openxmlformats-package.relationships+xml",
+      "office_document_relationship_id": "rIdWCABOfficeDocument",
+      "office_document_relationship_target": "xl/workbook.xml",
+      "office_document_relationship_type": "http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument",
+      "origin_member": "_xmlsignatures/origin.sigs",
+      "origin_relationship_id": "rIdWCABPackageSignatureOrigin",
+      "origin_relationship_type": "http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/origin",
+      "origin_relationships_member": "_xmlsignatures/_rels/origin.sigs.rels",
+      "relationship_transform_algorithm": "http://schemas.openxmlformats.org/package/2006/digital-signature/RelationshipTransform",
+      "root_relationships_member": "_rels/.rels",
+      "signature_content_type": "application/vnd.openxmlformats-package.digital-signature-xmlsignature+xml",
+      "signature_member": "_xmlsignatures/sig1.xml",
+      "signature_relationship_id": "rIdWCABPackageXmlSignature",
+      "signature_relationship_type": "http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/signature",
+      "signed_info_reference_uri": "#idWCABPackageObject",
+      "stable_formula": "=B10*C10",
+      "stable_formula_cell": "D10",
+      "stable_sheet": "Controls",
+      "stable_value": 12,
+      "stable_value_cell": "B10"
+    }
+  ],
+  "family": "governance",
+  "id": "governance.package_signature_relationship_selector_retargeted",
+  "must_reach": [],
+  "review_expectation": "block",
+  "schema_version": 3,
+  "title": "An OPC package signature selects a different root relationship",
+  "topology": "pair"
+}

manifest.jsonl

@@ -17,6 +17,7 @@
 {"baseline_files":[{"bytes":7231,"path":"governance/office_web_addin_auto_show_enabled/baseline.xlsx","sha256":"4c101ee0b607ebd366a4d4edd302eb812836fee501727bee8c7d46431089362c"}],"candidate_files":[{"bytes":7230,"path":"governance/office_web_addin_auto_show_enabled/candidate.xlsx","sha256":"170c708c082422e3d0075b5fdbcd9a329a6729ce0be0c30851bfa60949951662"}],"case_path":"governance/office_web_addin_auto_show_enabled","coverage":["The pair changes only one Office.AutoShowTaskpaneWithDocument property value in xl/webextensions/webextension1.xml. It does not edit ordinary cells, formulas, calculation properties, task-pane layout, add-in identity, or any other package member.","The synthetic add-in reference uses a local FileSystem store name and has no manifest payload or external relationship. WCAB does not install, load, execute, or fetch an add-in or manifest, and it does not claim that any task pane opens.","The stable Inputs!B2-to-Model!B2-to-Dashboard!B4 formula path is workbook context only. It is not evidence that an add-in reads, writes, calculates, or displays any of those cells."],"coverage_expectations":[],"facts":[{"addin_id":"{33333333-3333-3333-3333-333333333333}","baseline_auto_show":false,"candidate_auto_show":true,"dashboard_cell":"B4","dashboard_formula":"=Model!$B$2","dashboard_sheet":"Dashboard","input_cell":"B2","input_sheet":"Inputs","input_value":10,"kind":"office_web_addin_auto_show_enabled","model_cell":"B2","model_formula":"=Inputs!$B$2*2","model_sheet":"Model","reference_id":"{44444444-4444-4444-4444-444444444444}","reference_version":"1.0.0.0","store":"wcab-review-assistant.xml","store_type":"Filesystem","taskpane_member":"xl/webextensions/taskpanes.xml","web_extension_member":"xl/webextensions/webextension1.xml"}],"family":"governance","id":"governance.office_web_addin_auto_show_enabled","must_reach":[],"review_expectation":"block","schema_version":3,"title":"An embedded Office Web Add-in requests task-pane auto-show","topology":"pair"}
 {"baseline_files":[{"bytes":6745,"path":"governance/ole_object_auto_load_enabled/baseline.xlsx","sha256":"719b81ee1c9dbbd3e190dea907b90649c83c26fe18e088ac5677877314916cb4"}],"candidate_files":[{"bytes":6745,"path":"governance/ole_object_auto_load_enabled/candidate.xlsx","sha256":"34c36a544d09148d364ebf1f639ef3d0b488193964f5c46475afd9b7dbdd97c6"}],"case_path":"governance/ole_object_auto_load_enabled","coverage":["The pair changes only raw xl/worksheets/sheet1.xml oleObject/@autoLoad from false to true. It does not edit ordinary cells, formulas, calculation properties, content types, relationships, or the embedded-object bytes.","The object has one fixed internal worksheet relationship and an opaque synthetic ASCII payload under a synthetic unregistered ProgID. There is no linked target, ActiveX control, object presentation, macro, or external relationship.","WCAB does not deserialize, open, render, execute, register, or invoke an object server, and it does not claim that an object loads successfully. The stable Inputs!B2-to-Model!B2-to-Dashboard!B4 formula path is workbook context only."],"coverage_expectations":[],"facts":[{"baseline_auto_load":false,"candidate_auto_load":true,"content_type":"application/vnd.openxmlformats-officedocument.oleObject","dashboard_cell":"B4","dashboard_formula":"=Model!$B$2","dashboard_sheet":"Dashboard","dv_aspect":"DVASPECT_CONTENT","embedded_object_member":"xl/embeddings/wcab-review-embedded-object.bin","input_cell":"B2","input_sheet":"Inputs","input_value":10,"kind":"ole_object_auto_load_enabled","model_cell":"B2","model_formula":"=Inputs!$B$2*2","model_sheet":"Model","prog_id":"WCAB.Review.Embedded.Object","relationship_id":"rIdWCABEmbeddedOle","relationship_type":"http://schemas.openxmlformats.org/officeDocument/2006/relationships/oleObject","shape_id":1026,"sheet":"Inputs","target":"../embeddings/wcab-review-embedded-object.bin","worksheet_member":"xl/worksheets/sheet1.xml","worksheet_relationships_member":"xl/worksheets/_rels/sheet1.xml.rels"}],"family":"governance","id":"governance.ole_object_auto_load_enabled","must_reach":[],"review_expectation":"block","schema_version":3,"title":"An embedded OLE object requests automatic loading on workbook open","topology":"pair"}
 {"baseline_files":[{"bytes":6759,"path":"governance/package_signature_manifest_retargeted/baseline.xlsx","sha256":"3f609edd0e298d3105b81a7a930dc1f36bdefe31f62a1d2a0a233eba3e125f33"}],"candidate_files":[{"bytes":6759,"path":"governance/package_signature_manifest_retargeted/candidate.xlsx","sha256":"655bb9afff3728289f00ebc34be13c3affef0dd457eb24b71397a96339740d6d"}],"case_path":"governance/package_signature_manifest_retargeted","coverage":["The pair changes only _xmlsignatures/sig1.xml: its OPC Object/Manifest direct part URI moves from xl/workbook.xml to xl/worksheets/sheet1.xml. The origin graph, XML signature shape, content type, ordinary cells, formulas, and every other package member stay fixed.","The XMLDSIG digest and signature values are deliberately synthetic. The benchmark records only declared package scope; it does not verify cryptography, XML transform processing, digest values, certificate identity/trust, or a package consumer's trust decision.","The raw manifest URIs are public WCAB truth used by its local validator. An adapter must instead require FormulaFence's redacted aggregate before/after coverage profile and FF050 evidence, never a URI or selector."],"coverage_expectations":[],"facts":[{"baseline_direct_part_class":"workbook","baseline_manifest_uri":"/xl/workbook.xml?ContentType=application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml","candidate_direct_part_class":"worksheet","candidate_manifest_uri":"/xl/worksheets/sheet1.xml?ContentType=application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml","kind":"package_signature_manifest_direct_part_retargeted","origin_member":"_xmlsignatures/origin.sigs","origin_relationship_id":"rIdWCABPackageSignatureOrigin","origin_relationship_type":"http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/origin","origin_relationships_member":"_xmlsignatures/_rels/origin.sigs.rels","root_relationships_member":"_rels/.rels","signature_content_type":"application/vnd.openxmlformats-package.digital-signature-xmlsignature+xml","signature_member":"_xmlsignatures/sig1.xml","signature_relationship_id":"rIdWCABPackageXmlSignature","signature_relationship_type":"http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/signature","signed_info_reference_uri":"#idWCABPackageObject","stable_formula":"=B10*C10","stable_formula_cell":"D10","stable_sheet":"Controls","stable_value":12,"stable_value_cell":"B10"}],"family":"governance","id":"governance.package_signature_manifest_retargeted","must_reach":[],"review_expectation":"block","schema_version":3,"title":"An OPC package signature declares a different package part","topology":"pair"}
+{"baseline_files":[{"bytes":6833,"path":"governance/package_signature_relationship_selector_retargeted/baseline.xlsx","sha256":"56e7dbfe5f1315ed6d4af4014290d23cbffe1c707736eb08e0bab413ab2ce95d"}],"candidate_files":[{"bytes":6830,"path":"governance/package_signature_relationship_selector_retargeted/candidate.xlsx","sha256":"12d676205de98f79981288a513f0b01ce5f53af47ca00b17f6cac42ce02a9f23"}],"case_path":"governance/package_signature_relationship_selector_retargeted","coverage":["The pair changes only _xmlsignatures/sig1.xml: one Object/Manifest Relationships Transform selector moves from the root officeDocument relationship to the root digital-signature-origin relationship. The manifest URI, required following C14N transform, root/origin graph, XML signature shape, ordinary cells, formulas, and every other package member stay fixed.","A relationship selector identifies a Relationship entry, not proof that its target part was signed. The XMLDSIG digest and signature values are deliberately synthetic; the validator does not execute a transform, verify cryptography, assess digest values, certificates, identity/trust, or a package consumer decision.","The raw selector IDs are public WCAB truth used only by its local validator. An adapter must instead require FormulaFence's redacted equal-count aggregate plus a Manifest-coverage-change signal and FF050 evidence; it must never require a URI, selector, digest, certificate, or trust assertion."],"coverage_expectations":[],"facts":[{"baseline_selected_relationship_target":"xl/workbook.xml","baseline_selected_relationship_type":"http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument","baseline_selector_source_id":"rIdWCABOfficeDocument","candidate_selected_relationship_target":"_xmlsignatures/origin.sigs","candidate_selected_relationship_type":"http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/origin","candidate_selector_source_id":"rIdWCABPackageSignatureOrigin","canonicalization_algorithm":"http://www.w3.org/TR/2001/REC-xml-c14n-20010315","kind":"package_signature_manifest_relationship_selector_retargeted","manifest_uri":"/_rels/.rels?ContentType=application/vnd.openxmlformats-package.relationships+xml","office_document_relationship_id":"rIdWCABOfficeDocument","office_document_relationship_target":"xl/workbook.xml","office_document_relationship_type":"http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument","origin_member":"_xmlsignatures/origin.sigs","origin_relationship_id":"rIdWCABPackageSignatureOrigin","origin_relationship_type":"http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/origin","origin_relationships_member":"_xmlsignatures/_rels/origin.sigs.rels","relationship_transform_algorithm":"http://schemas.openxmlformats.org/package/2006/digital-signature/RelationshipTransform","root_relationships_member":"_rels/.rels","signature_content_type":"application/vnd.openxmlformats-package.digital-signature-xmlsignature+xml","signature_member":"_xmlsignatures/sig1.xml","signature_relationship_id":"rIdWCABPackageXmlSignature","signature_relationship_type":"http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/signature","signed_info_reference_uri":"#idWCABPackageObject","stable_formula":"=B10*C10","stable_formula_cell":"D10","stable_sheet":"Controls","stable_value":12,"stable_value_cell":"B10"}],"family":"governance","id":"governance.package_signature_relationship_selector_retargeted","must_reach":[],"review_expectation":"block","schema_version":3,"title":"An OPC package signature selects a different root relationship","topology":"pair"}
 {"baseline_files":[{"bytes":8610,"path":"governance/pivot_cache_refresh_on_open/baseline.xlsx","sha256":"1259f8800a185f3a730c2f03867273ccfea1f21955885aa1a5fe87b520fb9b4e"}],"candidate_files":[{"bytes":8610,"path":"governance/pivot_cache_refresh_on_open/candidate.xlsx","sha256":"b604ce0969033c9afb201c04d44833b1a3654a8705338661fbd749a9cdf28048"}],"case_path":"governance/pivot_cache_refresh_on_open","coverage":["The pair changes only raw pivotCacheDefinition/@refreshOnLoad. It does not edit source cells, stored PivotTable display cells, formula text, or calculation properties.","PivotTable cache refresh-on-open is stored control evidence. WCAB does not open the workbook in Excel, refresh a cache, calculate, or render the PivotTable, or claim a changed report result.","The validator reads relationship-backed raw OOXML, checks the cache/PivotTable binding and direct local dashboard edge, and treats that edge as a lower bound only if a client refresh changes the PivotTable display."],"coverage_expectations":[],"facts":[{"baseline_refresh_on_load":false,"cache_id":1,"candidate_refresh_on_load":true,"dashboard_cell":"B4","dashboard_formula":"=Report!$B$2","dashboard_sheet":"Dashboard","kind":"pivot_cache_refresh_on_load_changed","pivot_output_cell":"B2","pivot_ref":"A1:B2","pivot_sheet":"Report","source_ref":"A1:B5","source_sheet":"Source","source_type":"worksheet"}],"family":"governance","id":"governance.pivot_cache_refresh_on_open","must_reach":[{"source":{"cell":"B2","sheet":"Report"},"targets":[{"cell":"B4","sheet":"Dashboard"}]}],"review_expectation":"block","schema_version":3,"title":"A PivotTable cache starts refreshing when the workbook opens","topology":"pair"}
 {"baseline_files":[{"bytes":6001,"path":"governance/precision_as_displayed_enabled/baseline.xlsx","sha256":"e1c190bdeb5063f2d81cab1ed9415a0307312835f95c5bd73f467bdeb7575b68"}],"candidate_files":[{"bytes":6000,"path":"governance/precision_as_displayed_enabled/candidate.xlsx","sha256":"98c5a672c8256c3ec1e3316d62d011275773d7fb8c121265f4673622528601ae"}],"case_path":"governance/precision_as_displayed_enabled","coverage":["The pair records the raw calcPr fullPrecision switch that corresponds to Excel's precision-as-displayed setting. WCAB does not emulate Excel's calculation engine or claim that a client applied the control.","Both generated packages retain the exact stored 10.005 input and its two-decimal number format. The validator does not claim that opening, calculating, or saving either workbook rounds a value or produces a particular formula result.","The pair differs only in workbook calculation metadata; no worksheet value, formula text, number format, or dependency edge is edited."],"coverage_expectations":[],"facts":[{"baseline_full_precision":true,"candidate_full_precision":false,"formula":"=Inputs!$B$2*2","formula_cell":"B2","formula_sheet":"Model","input_cell":"B2","input_sheet":"Inputs","input_value":10.005,"kind":"precision_as_displayed_enabled","number_format":"0.00"}],"family":"governance","id":"governance.precision_as_displayed_enabled","must_reach":[{"source":{"cell":"B2","sheet":"Inputs"},"targets":[{"cell":"B2","sheet":"Model"},{"cell":"B4","sheet":"Dashboard"}]}],"review_expectation":"block","schema_version":3,"title":"Precision-as-displayed calculation is enabled without a cell edit","topology":"pair"}
 {"baseline_files":[{"bytes":7130,"path":"governance/query_table_refresh_on_open/baseline.xlsx","sha256":"aee0dbb654a14d639bb932acea3e0d6a484133ddb825aa8baa69918227763613"}],"candidate_files":[{"bytes":7130,"path":"governance/query_table_refresh_on_open/candidate.xlsx","sha256":"0a1e4568a6837bad25b5bb903df44a422c8d7f4925eba0332a1735fcb4723290"}],"case_path":"governance/query_table_refresh_on_open","coverage":["The pair changes only raw xl/queryTables/queryTable1.xml queryTable/@refreshOnLoad from false to true. It does not edit ordinary cells, formulas, calculation properties, the workbook connection, content types, or relationships.","The QueryTable retains one direct internal worksheet relationship and a fixed web-query connection to a reserved example.invalid URL. There is no credential, query result, table range, or external OOXML relationship.","WCAB does not open a connection, fetch a URL, refresh a query, materialize rows, calculate a workbook, or claim that a client refreshes successfully. The stable saved cells and direct formula path are context only."],"coverage_expectations":[],"facts":[{"background_refresh":false,"baseline_refresh_on_load":false,"candidate_refresh_on_load":true,"connection_edit_disabled":true,"connection_id":1,"connection_member":"xl/connections.xml","connection_url":"https://example.invalid/wcab-query-table-refresh","dashboard_cell":"B4","dashboard_formula":"=Summary!$B$2","dashboard_sheet":"Dashboard","fill_formulas":false,"growth_behavior":"insertClear","kind":"query_table_refresh_on_load_changed","query_table_member":"xl/queryTables/queryTable1.xml","refresh_disabled":false,"relationship_id":"rIdWCABQueryTable","relationship_type":"http://schemas.openxmlformats.org/officeDocument/2006/relationships/queryTable","remove_data_on_save":false,"saved_value":100,"saved_value_cell":"B2","sheet":"ImportedData","summary_cell":"B2","summary_formula":"=ImportedData!$B$2","summary_sheet":"Summary","worksheet_member":"xl/worksheets/sheet1.xml","worksheet_relationships_member":"xl/worksheets/_rels/sheet1.xml.rels"}],"family":"governance","id":"governance.query_table_refresh_on_open","must_reach":[{"source":{"cell":"B2","sheet":"ImportedData"},"targets":[{"cell":"B2","sheet":"Summary"},{"cell":"B4","sheet":"Dashboard"}]},{"source":{"cell":"B2","sheet":"Summary"},"targets":[{"cell":"B4","sheet":"Dashboard"}]}],"review_expectation":"block","schema_version":3,"title":"A QueryTable starts refreshing when the workbook opens","topology":"pair"}