Measure World correction revision stability

README.md

@@ -238,6 +238,16 @@ The recorded availability and detection instants are test coordinates. The suite
 network access and does not establish live monitoring, network-arrival latency, population delay
 performance, legal truth, calibration, general Brief quality, causality, or human benefit.
 
+P2C8 creates actual prior, treatment, and control `BriefV1Alpha1` records over that same source
+pair. Both revisions remove the stale instruction claim, add the same exact correction claim,
+retain three claims, and cite the same original/correction sources. Treatment preserves the exact
+identities of both unaffected claims; the paraphrase-drift control preserves neither. Independent
+reviews record every expected, preserved, drifted, and unexpected claim identity, producing scores
+of `1.0` and `0.0` across two matched pairs and another non-effective proposal.
+
+This freezes a World product rule over one recorded pair. It is not live revision, a general
+semantic-equivalence engine, population stability, calibration, causality, or human benefit.
+
 ## What the public World proof demonstrates
 
 Generate a self-contained visual Reality Brief and its exact machine-readable backing data:
@@ -332,10 +342,11 @@ $PY -m scripts.p2c3_measured_feedback "$WORKSPACE"
 # Stacked candidate: explicit reject/no-action review of the exact proposal
 $PY -m scripts.p2c4_reviewed_impact_disposition "$WORKSPACE"
 
-# Stacked candidates: exact citation correctness, contradiction attention, and correction delay
+# Stacked candidates: correctness, attention, correction delay, and revision stability
 $PY -m scripts.p2c5_citation_correctness_outcome "$WORKSPACE"
 $PY -m scripts.p2c6_contradiction_attention_outcome "$WORKSPACE"
 $PY -m scripts.p2c7_correction_detection_delay_outcome "$WORKSPACE"
+$PY -m scripts.p2c8_correction_revision_stability_outcome "$WORKSPACE"
 ```
 
 The released 0.9.0 gates are reproducible through the locked environment, as CI does. The
@@ -404,9 +415,10 @@ adds an independently reviewed citation-correctness Outcome and a citation-prese
 negative control. P2C6 adds exact contradiction recall, false-alert rate, equal alert-volume
 control, and valid silence under one frozen recorded-source challenge. P2C7 adds exact handling of
 one explicit recorded correction pair, preserves the prior record, and measures frozen-replay
-detection delay against a product target. The next bounded measurement work is
-calibration/revision stability, another independently sourced correction event, or independent
-Market reproduction.
+detection delay against a product target. P2C8 measures exact unaffected-claim identity
+preservation across real Brief contracts while holding correction semantics, source coverage, and
+claim count constant. The next bounded measurement work is calibration, another independently
+sourced correction event, or independent Market reproduction.
 Separately reviewed opt-in network transport and P2D multi-source conflict/correction with LIVE
 inputs remain independent work. None of these steps may add autonomous publishing, delivery,
 persuasion, or action authority to a Domain Pack.

ROADMAP.md

@@ -16,7 +16,7 @@ source code into the platform.
 
 See the [0.9.0 release record](docs/releases/world-intelligence-p2c2-v0.9.0.md).
 
-## Candidate — P2C3–P2C7 measured feedback and product-owned outcomes
+## Candidate — P2C3–P2C8 measured feedback and product-owned outcomes
 
 - The exact 0.9.0 Brief and a World-owned source-only control pass through two matched reviewed
   export pairs under one frozen structural citation-coverage criterion.
@@ -41,6 +41,11 @@ See the [0.9.0 release record](docs/releases/world-intelligence-p2c2-v0.9.0.md).
   reviewed workflow, but their replay delays are 300 and 21600 seconds against a product-owned
   600-second target. Exact reviews and Outcomes expose the source pair, rule, delay, score, and
   limitations without claiming live network-arrival performance.
+- A fifth frozen criterion creates actual prior and revised Brief contracts over that correction.
+  Treatment and control have the same exact sources, replacement claim, claim count, and reviewed
+  workflow, but treatment preserves both unaffected claim identities while the paraphrase-drift
+  control preserves neither. Exact reviews expose the affected, replacement, stable, preserved,
+  drifted, and unexpected claim sets without claiming general semantic equivalence.
 - This is source-checkout evidence against stacked Core candidates, not a released World capability, human
   benefit finding, causal claim, network-freshness proof, or applied governance change.
 
@@ -55,7 +60,10 @@ freezes contradiction recall, false-alert rate, equal alert volume, and valid si
 claiming live conflict detection or population performance. The stacked
 [P2C7 work packet](docs/design/world-intelligence-p2c7-correction-detection-delay-outcome-work-packet-v1.md)
 freezes exact correction linkage, prior-record preservation, and recorded-replay detection delay
-without claiming live monitoring or network-arrival latency.
+without claiming live monitoring or network-arrival latency. The stacked
+[P2C8 work packet](docs/design/world-intelligence-p2c8-correction-revision-stability-outcome-work-packet-v1.md)
+freezes correction-induced Brief revision stability without claiming live revision, population
+performance, or a general semantic-equivalence engine.
 
 ## Next — trustworthy live orientation
 

docs/audits/world-intelligence-p2c8-correction-revision-stability-outcome-2026-08-10.md

@@ -0,0 +1,154 @@
+# World Intelligence P2C8 correction-revision-stability outcome audit — 2026-08-10
+
+Status: **stacked candidate evidence only; not a release, SI4 pass, live-revision proof, or applied
+governance change**
+
+## Source identity
+
+- World base: P2C7 commit `216a37a1fdcb4f0baf9ac148ab9e525559141c22`
+- World branch: `codex/world-correction-revision-stability`
+- Core dependency: exact observed-result candidate commit
+  `433e3d16c5458c975557dcd1552824fb959d4d12`
+- Released identity intentionally unchanged: `ace-domain-world-intelligence==0.9.0`,
+  `ace-core>=0.5.0,<0.6`
+
+## Exact point-in-time result
+
+The source fixture remains
+`sha256:2b81d3950cbfd127408eec227ec5cd249677a189120d6ca7b603d85d01074543`,
+with original Observation `observation:f1768d6f4191a86e245846a9a1e33768` and correction
+Observation `observation:fced5d3bbc3802c0285021142b332e29`.
+
+One source-checkout run recorded actual prior, treatment, and control `BriefV1Alpha1` resources:
+
+```text
+prior Brief:
+  brief:b0911c340cc4a39cd7a908f7884d71bd
+  sha256:b0911c340cc4a39cd7a908f7884d71bd6348b6202b9d8f521d4339e708273250
+treatment Brief:
+  brief:d1dafb5352ebfd99bc35c1044bc627ac
+  sha256:d1dafb5352ebfd99bc35c1044bc627ac3e30846b8092561ec28bfca4ae4921c3
+control Brief:
+  brief:f86f101516ea496108557498e5950672
+  sha256:f86f101516ea496108557498e5950672660ead2c1a01949a46776250cbf3f075
+
+affected prior claim:
+  grounded_claim:fddf5435d53f01312739f8f8ff355eb6
+replacement correction claim:
+  grounded_claim:ff1683b3155f734bcf942c0cab9ed7e4
+stable claims:
+  grounded_claim:7c6c683cae2dabeb050d5542405e992a
+  grounded_claim:8fab51672b58cdd0c45734ea637d7aaf
+control-only paraphrase identities:
+  grounded_claim:82b05b5ec627f03a43e76c76eff27fde
+  grounded_claim:ec5fc4e83b25519dc44f2878ed69588b
+
+original citation: citation:0cb9a00ce581b4d09a0ab14f755caf05
+correction citation: citation:13ae2675d1ce8f512389eda12e4b6632
+```
+
+Treatment and control both have three claims, both remove the affected prior claim, both add the
+same replacement, and both cite the same original and correction sources. Treatment preserves both
+stable claim identities. Control preserves neither and introduces the two frozen paraphrase
+identities.
+
+The reviews used product policy `world_recorded_correction_revision_stability` version
+`candidate-1`, material
+`sha256:0145cc35244c21b84f3ba346ccb16192b825fd91d1bcff950e3f0a8005ac932b`:
+
+```text
+treatment review 1: brief_revision_stability_review:3b50050e155af3d3eb4391e232a178d0
+treatment review 2: brief_revision_stability_review:9f0544d7c79b9a6601760d98133db156
+control review 1: brief_revision_stability_review:ac1422dde272aed347045d671e2c6276
+control review 2: brief_revision_stability_review:1a4d0d821b3752a47d15a3d6a1746bc7
+treatment preserved stable claims: 2, 2
+control preserved stable claims: 0, 0
+treatment drifted stable claims: 0, 0
+control drifted stable claims: 2, 2
+treatment score: 1.0, 1.0
+control score: 0.0, 0.0
+matched pairs: 2
+mean effect: 1.0
+classification: useful
+proposal action: promote
+proposal live effect: false
+historical replay: true
+replay reauthorization: false
+```
+
+The exact evaluation was `impact_evaluation:d0ba0242b75dd5ec63ba27aa223a0225` with material
+`sha256:d0ba0242b75dd5ec63ba27aa223a0225ff83239a40398a8cbd50d54cea1a3a0a`.
+The exact non-effective proposal was
+`impact_governance_proposal:9e5a4eab5ea3c147310f6e6f8011c7cd` with material
+`sha256:9e5a4eab5ea3c147310f6e6f8011c7cd56682933711e3be8924fbe294426b40d`.
+
+## Verification
+
+The frozen World dependency versions plus the stacked Core candidate and separately packaged
+reference action adapter produced:
+
+```text
+python -B -m pytest domain_packs/tests/test_p2c3_measured_feedback.py \
+  domain_packs/tests/test_p2c4_reviewed_impact_disposition.py \
+  domain_packs/tests/test_p2c5_citation_correctness_outcome.py \
+  domain_packs/tests/test_p2c6_contradiction_attention_outcome.py \
+  domain_packs/tests/test_p2c7_correction_detection_delay_outcome.py \
+  domain_packs/tests/test_p2c8_correction_revision_stability_outcome.py -q --tb=short
+20 passed in 6.50s
+
+python -B -m pytest -q --tb=short
+103 passed in 20.04s
+
+python -B -m pytest adapters/federal_register_source/tests -q --tb=short
+26 passed in 0.26s
+
+python -B -m pytest tests/test_release_contract.py -q --tb=short
+7 passed in 0.05s
+
+# Installed public ace-core==0.5.0; no Core source checkout or reference action adapter.
+python -B -m pytest -q --tb=short -rs
+82 passed, 21 skipped in 14.24s
+
+ruff check --no-cache <P2C8 changed Python files>
+PASS
+
+ruff format --check --no-cache <P2C8 changed Python files>
+3 files already formatted
+
+uv build --out-dir <temporary-directory>
+Successfully built unchanged 0.9.0 source distribution and inert data-only wheel
+
+git diff --check
+PASS
+```
+
+The twenty-one public-Core skips are explicit boundaries: one P2C2 test requires the separately
+packaged Core reference action adapter; P2C3-P2C8 require unreleased stacked Core candidate
+contracts. The wheel contains 45 inert Domain Pack JSON/metadata files, no Python or entry points,
+and retains `ace-core>=0.5.0,<0.6`.
+
+Repository-wide Ruff remains an inherited release-hygiene blocker. The exact locked check reports
+the same 15 lint findings and 20 format targets as the P2C7 parent. Scoped P2C8 checks and
+`git diff --check` are green. P2C8 does not rewrite unrelated history, but release closeout must
+reconcile the repository-wide gate before publication.
+
+## Claim boundary
+
+The World reviewer exact-loads the prior and revised Briefs, then derives affected-update
+correctness, correction visibility, complete source coverage, claim-count preservation, and the
+exact stable-claim partition. The Core Outcome points to that review record. Historical replay
+requires no new authority, and fresh hosts reproduce the exact Brief identities, claim sets,
+classification, metrics, and proposal disposition.
+
+The paraphrase control is a frozen World policy fixture, not a general semantic-equivalence engine.
+One correction and two replicated workflows do not establish live revision, a population stability
+rate, calibration, source independence, general Brief quality, causality, legal truth, or human
+benefit. The proposal remains non-effective and unapplied.
+
+## Remaining work
+
+Calibration, another independently sourced correction event, a materially different Market
+journey, combined-main review/CI, public artifacts, repository-wide lint/format reconciliation,
+security/release checks, and opt-in live transport remain future bounded work. Core issue #49 F1,
+F3, and F5 still require explicit 0.6 release-owner disposition; this World packet neither
+implements nor re-dates them.

docs/design/world-intelligence-p2c8-correction-revision-stability-outcome-work-packet-v1.md

@@ -0,0 +1,110 @@
+# World Intelligence P2C8 correction-revision-stability outcome work packet (v1)
+
+**Status:** stacked source-checkout candidate; this packet does not release World Intelligence,
+apply a governance proposal, close ACE Core issue #38, pass SI4, or complete ACE 0.6.0.
+
+**Frozen:** 2026-08-10 from World P2C7 commit
+`216a37a1fdcb4f0baf9ac148ab9e525559141c22`, stacked on the Core exact observed-result
+provenance candidate `433e3d16c5458c975557dcd1552824fb959d4d12`.
+
+## Objective
+
+Measure whether a correction-induced Brief revision changes the claim it should while preserving
+the exact identities of claims the correction does not affect. The packet extends the governed
+recorded-data journey:
+
+```text
+original Observation + correction Observation -> prior Brief
+  -> treatment revision / unrelated-drift control
+  -> Decision -> reviewed Action -> exact independent revision review
+  -> observed Outcome -> useful / harmful / unproven evaluation -> proposal only
+```
+
+The source pair remains FCC Federal Register document `2020-28779` and its explicit correction
+`2021-10670`. P2C8 creates actual domain-neutral `BriefV1Alpha1` records rather than a weaker
+World-only summary shape. The prior Brief has one affected instruction claim and two stable facts.
+Both revised Briefs replace the affected claim with the exact correction instruction, retain the
+same two source citations, and keep the claim count at three. Treatment reuses the exact two stable
+claim identities; the control paraphrases both stable facts and therefore changes their content
+identities despite unchanged correction semantics and source coverage.
+
+## Product-owned review policy
+
+World owns `world_recorded_correction_revision_stability` version `candidate-1`. Its source fixture,
+prior Brief, affected claim, replacement claim, stable claim set, reviewer, formula, and policy
+digest are inspectable. The score is the unaffected-claim preservation rate, but only when all four
+gates pass:
+
+1. the exact replacement claim is present and the stale affected claim is absent;
+2. the correction citation and exact correction/prior lineage are visible;
+3. original and correction source coverage is complete; and
+4. the prior and revised claim counts match.
+
+If any gate fails, the score is `0`. Treatment scores `1.0`; the unrelated-drift control scores
+`0.0`. Core and Intelligence see only exact Brief/result coordinates and a scalar outcome. FCC,
+Federal Register, correction, affected/unaffected claim policy, paraphrase classification, and
+review vocabulary remain in World.
+
+## Exact acceptance
+
+P2C8 must:
+
+1. rerun P2C2 through P2C7 and preserve every prior immutable record, evaluation, proposal, and
+   reviewed disposition;
+2. append an exact prior `BriefV1Alpha1` citing the original Observation;
+3. append treatment and control `BriefV1Alpha1` revisions with exact prior, original, and
+   correction lineage;
+4. prove both revisions remove the stale affected claim, add the same exact replacement claim,
+   cite the same original/correction sources, and retain the same claim count;
+5. prove treatment preserves both stable claim identities while control preserves neither and
+   introduces exactly two unrelated content identities;
+6. create two distinct reviewed treatment/control Action pairs under matched task conditions;
+7. append four independently authenticated review records and four Core Outcomes naming those
+   exact review records;
+8. classify the bounded two-pair difference `useful`, emit only a non-effective `promote`
+   proposal, and perform no proposal application;
+9. replay without reauthorization and reproduce Brief identities, claim sets, classification, and
+   substantive metrics across fresh hosts; and
+10. reject duplicate claims, incomplete stable-claim partitions, missing correction visibility
+    paired with a positive score, and caller-invented aggregate scores.
+
+## Negative and failure controls
+
+The unrelated-drift Brief is the primary product negative control. It has the same exact prior,
+source Observations, citations, claim count, replacement claim, reviewed workflow, and matched
+conditions as treatment. Only the two unaffected claims are paraphrased, changing their content
+identities. This is a frozen fixture classification, not a general semantic-equivalence engine.
+
+`BriefV1Alpha1` rejects duplicate claim identities. The review contract requires the preserved and
+drifted sets to partition the expected stable claims exactly and derives its rate and score from
+that partition plus the four gates. Exact review loading rejects unavailable, changed, relabelled,
+cross-product, or incomplete Brief material. Stacked Core tests remain authoritative for missing
+attribution/result provenance, condition mismatch, cutoff leakage, unavailable Outcomes,
+duplicate/replayed evidence, interruption, restart, and denied authority.
+
+## Files and rollback
+
+This packet owns:
+
+- `scripts/p2c8_correction_revision_stability_outcome.py`;
+- `domain_packs/tests/test_p2c8_correction_revision_stability_outcome.py`;
+- the additive P2C7 state handoff;
+- this work packet, its audit, and restrained README/roadmap references.
+
+It changes no shipped Domain Pack, connector, fixture source policy, package version, dependency
+range, lockfile, release record, Core contract, or public artifact. Rollback removes the P2C8
+harness, tests, state handoff, and candidate documentation. Brief, review, Outcome, evaluation,
+and proposal records already persisted by a host remain immutable history.
+
+## Non-claims and next packet
+
+This is one recorded correction pair and two replicated matched workflows. It establishes exact
+claim-identity preservation and criterion sensitivity under one frozen World rule. It does not
+establish live revision, general semantic equivalence, a population stability rate, calibration,
+source independence, general Brief quality, causal benefit, legal truth, or human usefulness.
+
+The next bounded outcome packet should freeze calibration under a declared forecast/observed-result
+rule or repeat the unchanged correction/revision contracts over a materially different source.
+Independent Market reproduction, public Core artifacts, combined-main review/CI, compatibility,
+security and release gates, opt-in live transport, issue #49 disposition, repository-wide hygiene,
+and any separately authorized proposal application remain separate work.