P2C3: prove measured feedback over the World public journey

README.md

@@ -181,6 +181,19 @@ action authority; the export is provided by Core's separately packaged reference
 source responses are exact official public records under recorded transport, so P2C2 proves the
 complete deterministic product journey but still does not claim network freshness at test time.
 
+P2C3 is a source-checkout candidate over that unchanged public journey. It compares two exact
+reviewed exports of the cited Brief with two reviewed exports of a World-owned source-only control.
+The frozen product measure is the fraction of the two required admitted Observation identities
+preserved in each exported artifact: treatment scores `1.0, 1.0`; control scores `0.0, 0.0`. Under
+the declared minimum of two matched pairs and useful-effect threshold of `0.5`, Core + Intelligence
+classifies the exact result as `useful` and appends a `promote` proposal that is non-effective,
+non-selectable, and requires separate human review. Historical replay performs no reauthorization.
+
+That measure is structural citation coverage. It is not a human-benefit measure, causal estimate,
+general Brief-quality score, or network-freshness proof. The proposal is not applied. P2C3 depends
+on the unreleased Core candidate in [PR #88](https://github.com/augmented-cognition-engine/core/pull/88),
+so World 0.9.0 and its `ace-core>=0.5.0,<0.6` release contract remain unchanged.
+
 ## What the public World proof demonstrates
 
 Generate a self-contained visual Reality Brief and its exact machine-readable backing data:
@@ -268,6 +281,9 @@ $PY scripts/p2c_federal_register_live_acceptance.py
 # Complete official-record -> Shift -> Signal -> Brief -> reviewed export journey
 WORKSPACE=$(mktemp -d)
 $PY -m scripts.p2c2_governed_reality_brief "$WORKSPACE"
+
+# Candidate measured Outcome -> governed-feedback extension (requires Core PR #88 source)
+$PY -m scripts.p2c3_measured_feedback "$WORKSPACE"
 ```
 
 The released 0.9.0 gates are reproducible through the locked environment, as CI does. The
@@ -302,6 +318,8 @@ The governed official-source admission proof is recorded in
 [`docs/audits/world-intelligence-p2c-federal-register-live-2026-08-07.md`](docs/audits/world-intelligence-p2c-federal-register-live-2026-08-07.md).
 The complete governed product-journey evidence is recorded in
 [`docs/audits/world-intelligence-p2c2-governed-reality-brief-2026-08-10.md`](docs/audits/world-intelligence-p2c2-governed-reality-brief-2026-08-10.md).
+The source-checkout measured-feedback candidate is recorded in
+[`docs/audits/world-intelligence-p2c3-measured-feedback-2026-08-10.md`](docs/audits/world-intelligence-p2c3-measured-feedback-2026-08-10.md).
 
 Release-level scope and evidence are recorded in
 [`docs/releases/world-intelligence-p2c2-v0.9.0.md`](docs/releases/world-intelligence-p2c2-v0.9.0.md),
@@ -329,8 +347,9 @@ workspace export followed by separate verification and promotion.
 The [World Intelligence roadmap](ROADMAP.md) owns current domain direction. Detailed packet history
 remains in [`docs/world-intelligence-roadmap-status-2026-08-06.md`](docs/world-intelligence-roadmap-status-2026-08-06.md),
 and release history is in [`CHANGELOG.md`](CHANGELOG.md). The next bounded work is a separately
-reviewed opt-in network transport and P2D multi-source conflict/correction with LIVE inputs. Neither
-step may add autonomous publishing, delivery, persuasion, or action authority to a Domain Pack.
+reviewed disposition of the P2C3 non-effective proposal plus a separately reviewed opt-in network
+transport and P2D multi-source conflict/correction with LIVE inputs. None of these steps may add
+autonomous publishing, delivery, persuasion, or action authority to a Domain Pack.
 
 ## Community and security
 

ROADMAP.md

@@ -16,6 +16,19 @@ source code into the platform.
 
 See the [0.9.0 release record](docs/releases/world-intelligence-p2c2-v0.9.0.md).
 
+## Candidate — P2C3 measured feedback over the public journey
+
+- 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.
+- Exact material-use receipts, Decisions, reviewed Actions, terminal results, observed Outcomes,
+  conditions, and cutoff feed the domain-neutral Core + Intelligence measured-impact contract.
+- The candidate classifies the bounded result as useful and appends only a non-effective,
+  non-selectable promote proposal; exact replay performs no reauthorization.
+- This is source-checkout evidence against Core PR #88, not a released World capability, human
+  benefit finding, causal claim, network-freshness proof, or applied governance change.
+
+See the [P2C3 candidate work packet](docs/design/world-intelligence-p2c3-measured-feedback-work-packet-v1.md).
+
 ## Next — trustworthy live orientation
 
 - Add a separately reviewed, opt-in production transport without bundling it into the Domain Pack.

docs/audits/world-intelligence-p2c3-measured-feedback-2026-08-10.md

@@ -0,0 +1,103 @@
+# World Intelligence P2C3 measured-feedback candidate audit — 2026-08-10
+
+Status: **candidate evidence only; not a release or applied governance change**
+
+## Source identity
+
+- World base: `0a2c0829923aabd0cf69e51c16293b534f41dab6`
+- World branch: `codex/measured-intelligence-world-journey`
+- Core dependency: PR [#88](https://github.com/augmented-cognition-engine/core/pull/88), commit
+  `9078018`
+- Released World identity intentionally unchanged: `ace-domain-world-intelligence==0.9.0`,
+  `ace-core>=0.5.0,<0.6`
+
+## Exact acceptance result
+
+One candidate run reproduced the exact P2C2 target Brief
+`brief:c98524e788bc6bcccbc354e7d81fcdb5` from Federal Register documents `2026-15932` and
+`2026-16197`. Its two required admitted Observation keys were:
+
+- `observation:0ddeed52469da44bac7c94598e4b8fa7`
+- `observation:66de839538acfb032dd4b0a84155c909`
+
+Two treatment reviewed exports retained both keys and scored `1.0, 1.0`. Two matched reviewed
+exports of the exact source-only control retained neither and scored `0.0, 0.0`. Under criterion
+`impact_criterion:world-official-observation-citation-coverage` version `candidate-1`, the result
+was:
+
+```text
+classification: useful
+matched pairs: 2
+treatment mean: 1.0
+control mean: 0.0
+mean effect: 1.0
+95% deterministic interval: [1.0, 1.0]
+proposal: promote
+proposal live_effect: false
+proposal selectable: false
+proposal requires_human_review: true
+historical replay: true
+replay reauthorization: false
+```
+
+The run appended the evaluation and proposal as one exact measured-impact transaction. A fresh
+service reopened it with an authorizer that raises on use, so the successful replay did not
+reclassify evidence or obtain new authority.
+
+## Verification
+
+Source-checkout verification with Core PR #88 and the separately packaged reference action adapter:
+
+```text
+python -B -m pytest domain_packs/tests/test_p2c3_measured_feedback.py -q --tb=short
+2 passed in 0.55s
+
+python -B -m pytest -q --tb=short
+85 passed in 14.81s
+
+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 0.03s
+
+ruff check scripts/p2c2_governed_reality_brief.py \
+  scripts/p2c3_measured_feedback.py \
+  domain_packs/tests/test_p2c3_measured_feedback.py
+PASS
+
+ruff format --check scripts/p2c3_measured_feedback.py \
+  domain_packs/tests/test_p2c3_measured_feedback.py
+PASS
+
+git diff --check
+PASS
+```
+
+Locked public-compatibility verification resolved `ace-core==0.5.0` without a Core checkout. The
+focused candidate tests skipped explicitly because the unreleased contract was absent, and the
+complete public-boundary suite stayed green:
+
+```text
+P2C3 focused: 2 skipped
+complete World: 82 passed, 3 skipped in 14.37s
+```
+
+The other skipped test is the existing P2C2 cross-repository acceptance, whose independently
+packaged reference adapter is intentionally absent from the root lock. The source-checkout run
+above executes that test and both P2C3 tests.
+
+`uv build` produced exactly the unchanged 0.9.0 source distribution and wheel in a temporary
+directory. The release-contract suite confirms the wheel mapping remains inert JSON Domain Pack
+material and excludes candidate scripts, tests, adapters, and audit documentation.
+
+## Claim boundary
+
+This record proves one product-defined structural comparison over exact official-public-data
+lineage, reviewed actions, observed Outcomes, and governed feedback machinery. It does not prove
+human benefit, causality, citation correctness, legal effect, general Brief quality, live network
+freshness, autonomous publication, or effective promotion. The source-only control is deliberately
+bounded and the two pairs are deterministic fixtures. The proposal was not applied.
+
+The next packet is a separately authorized human disposition of this exact proposal. Broader World
+measurement and live transport remain independent work.

docs/design/world-intelligence-p2c3-measured-feedback-work-packet-v1.md

@@ -0,0 +1,104 @@
+# P2C3 — measured feedback over the official-record Reality Brief
+
+Status: **source-checkout candidate; not released and not applied**
+
+Frozen: 2026-08-10 from World `main` at
+`0a2c0829923aabd0cf69e51c16293b534f41dab6` and Core PR
+[#88](https://github.com/augmented-cognition-engine/core/pull/88) at
+`9078018`.
+
+## Objective
+
+Extend the already released P2C2 public-data path through one bounded observed Outcome and governed
+feedback result without changing the Domain Pack, released package identity, or layer boundary:
+
+```text
+official records -> Observation -> Shift -> Signal -> Brief -> Decision
+                 -> reviewed Action -> observed Outcome -> measured evaluation
+                 -> non-effective governance proposal
+```
+
+This packet proves that a World-owned criterion and control can drive the unchanged domain-neutral
+Core + Intelligence measured-impact contracts. It does not complete ACE 0.6.0 or promote World
+Intelligence beyond 0.9.0.
+
+## Frozen scenario, criterion, and control
+
+The target is the exact LIVE Reality Brief already derived from Federal Register documents
+`2026-15932` and `2026-16197`. The control is a separately persisted World artifact that names the
+same two source documents but intentionally omits routed context, interpretive claims, exact
+admitted Observation identities, and citation linkage.
+
+World owns the structural measure `official_observation_citation_coverage`: the fraction of the two
+required exact admitted Observation record keys present in a reviewed exported artifact. The
+criterion is frozen before the measured actions, uses higher-is-better direction, requires two
+matched pairs, and maps an interval whose lower bound is at least `0.5` to a non-effective promote
+proposal. Harm at `-0.5` maps to rollback. Unproven maps to no proposal.
+
+Each pair shares exact route, task, observation window, recorded-transport status, and required
+Observation count. Treatment and control use distinct material-use receipts, Decisions, reviews,
+Action admissions, terminals, and Outcomes. In the frozen fixture, treatment scores are `1.0, 1.0`
+and control scores are `0.0, 0.0`.
+
+## Ownership boundary
+
+| Layer | Owns here | Does not own here |
+|---|---|---|
+| Core | immutable coordinates and append, governed authority, Decision, reviewed Action, terminal result, Outcome, exact replay | Federal Register, citation-coverage meaning, World thresholds or control policy |
+| Intelligence | neutral conditions, evidence, useful/harmful/unproven evaluation, uncertainty and non-effective proposal | World nouns, sources, product claims or proposal application |
+| World product | public scenario, structural measure, matched control, thresholds, limitations and evidence | storage, hidden execution, authority resolution or silent promotion |
+
+The shipped JSON Domain Pack remains unchanged and inert. Source acquisition and the create-only
+workspace effect remain separately packaged adapters.
+
+## Acceptance gates
+
+1. Reproduce the released P2C2 Observation through reviewed Action journey from the two exact
+   recorded official-public source responses.
+2. Persist the exact target and source-only control and create two distinct reviewed export pairs.
+3. Bind every variant to exact material-use attribution, Decision, review, admission, terminal
+   result, observed Outcome, conditions, criterion head, and cutoff.
+4. Measure structural coverage from the reviewed artifact itself rather than accepting a caller
+   label.
+5. Classify the two matched pairs as useful with treatment mean `1.0`, control mean `0.0`, and
+   effect interval `[1.0, 1.0]` under the frozen criterion.
+6. Append only a non-effective, non-selectable promote proposal that requires human review.
+7. Reopen the exact evaluation and proposal through a fresh service whose authorizer fails if
+   called, proving historical replay rather than reclassification.
+8. Keep human benefit, causality, network freshness, autonomous publication, and proposal
+   application explicitly false.
+9. Pass focused P2C2/P2C3, complete World, connector, release-contract, lint, and diff checks.
+
+## Explicit limits and non-claims
+
+- The source responses are exact official public records under recorded transport; the test does
+  not make a live network request or prove freshness.
+- Exact Observation identifiers in an export establish structural citation coverage, not citation
+  correctness, contradiction recall, calibration, attention value, customer value, or practical
+  benefit.
+- Two deterministic matched fixture pairs are a product-rule demonstration, not a population
+  estimate or causal study.
+- Action success does not imply a useful Outcome; the separate exact Outcome records carry the
+  declared measure.
+- The promote proposal has no live effect and cannot make the Brief selectable. P2C2's earlier
+  action-promotion receipt concerns adoption of that exact action result, not this measured-impact
+  proposal.
+- No 0.6 package, schema, release window, tag, wheel, or public capability is claimed.
+
+## Files and rollback
+
+This packet owns the P2C3 harness/test, the additive P2C2 acceptance-state handoff, this work packet,
+its audit record, and restrained README/roadmap references. It does not edit shipped pack material,
+connectors, version metadata, lock state, or release records.
+
+Rollback removes those additive files/references and the optional state handoff. Durable evaluation
+and proposal records, if produced by a host, remain immutable non-effective audit history.
+
+## Remaining public journey
+
+The next bounded packet must submit the exact non-effective proposal to a separate human/Core
+authority path and record an explicit accept or reject disposition without self-certification. A
+later outcome packet must add independently reviewed product measures such as citation correctness,
+contradiction coverage, correction quality, detection delay, or false-alert rate before making any
+broader usefulness claim. Opt-in network transport and P2D multi-source correction remain separate
+work and must not be smuggled into this packet.

domain_packs/tests/test_p2c3_measured_feedback.py

@@ -0,0 +1,54 @@
+from __future__ import annotations
+
+import importlib.util
+
+import pytest
+
+
+def _require_candidate_contracts() -> None:
+    if importlib.util.find_spec("ace.application.measured_impact") is None:
+        pytest.skip("P2C3 candidate requires the ACE Core measured-impact contract from PR #88")
+    if importlib.util.find_spec("ace_reference_workspace_action") is None:
+        pytest.skip("P2C3 candidate requires the separately packaged Core reference adapter")
+
+
+@pytest.mark.asyncio
+async def test_official_record_brief_reaches_measured_proposal_only_feedback(tmp_path) -> None:
+    _require_candidate_contracts()
+    from scripts.p2c3_measured_feedback import run_measured_feedback
+
+    result = await run_measured_feedback(tmp_path)
+
+    assert result["journey"]["intelligence"]["shift_type"] == "official_publication_change"
+    assert result["journey"]["intelligence"]["signal_type"] == "official_publication"
+    assert result["journey"]["intelligence"]["citation_count"] == 2
+    assert result["controls"]["treatment_scores"] == (1.0, 1.0)
+    assert result["controls"]["control_scores"] == (0.0, 0.0)
+    assert result["evaluation"]["classification"] == "useful"
+    assert result["evaluation"]["matched_pair_count"] == 2
+    assert result["evaluation"]["mean_effect"] == 1.0
+    assert result["proposal"]["action"] == "promote"
+    assert result["proposal"]["live_effect"] is False
+    assert result["proposal"]["selectable"] is False
+    assert result["proposal"]["requires_human_review"] is True
+    assert result["replay"]["historical"] is True
+    assert result["replay"]["no_reauthorization"] is True
+
+
+@pytest.mark.asyncio
+async def test_measured_world_journey_keeps_its_claim_boundary_explicit(tmp_path) -> None:
+    _require_candidate_contracts()
+    from scripts.p2c3_measured_feedback import run_measured_feedback
+
+    result = await run_measured_feedback(tmp_path)
+
+    assert result["scope"] == {
+        "official_public_records": True,
+        "recorded_transport": True,
+        "network_freshness_claimed": False,
+        "human_benefit_claimed": False,
+        "causality_claimed": False,
+        "proposal_applied": False,
+        "autonomous_publication": False,
+    }
+    assert "structural" in " ".join(result["evaluation"]["limitations"])

scripts/p2c2_governed_reality_brief.py

@@ -439,7 +439,11 @@ async def _record_decision(
     return decision, record.reference(), receipt
 
 
-async def run_acceptance(workspace_root: Path) -> dict[str, Any]:
+async def run_acceptance(
+    workspace_root: Path,
+    *,
+    state_sink: dict[str, Any] | None = None,
+) -> dict[str, Any]:
     environment = await build_environment()
     admissions = await admit_snapshots(environment)
     baseline, current = admissions
@@ -608,7 +612,7 @@ async def run_acceptance(workspace_root: Path) -> dict[str, Any]:
     if not action_replay.replayed:
         raise AssertionError("reviewed action did not reopen without a second effect")
 
-    return {
+    result = {
         "contract": "ace.world-intelligence.governed-reality-brief-action/v1alpha1",
         "source": source_projection(admissions),
         "intelligence": {
@@ -652,6 +656,26 @@ async def run_acceptance(workspace_root: Path) -> dict[str, Any]:
             "political_persuasion": False,
         },
     }
+    if state_sink is not None:
+        state_sink.update(
+            {
+                "environment": environment,
+                "admissions": admissions,
+                "runtime": runtime,
+                "reasoning": reasoning,
+                "append_binding": append_binding,
+                "action_binding": action_binding,
+                "clock": clock,
+                "brief_admission": brief,
+                "decision": decision,
+                "decision_ref": decision_ref,
+                "review": review,
+                "action_outcome": outcome,
+                "review_service": review_service,
+                "written": written,
+            }
+        )
+    return result
 
 
 def main() -> None: