diff --git a/Dockerfile b/Dockerfile
index 98012ae..ea3dc14 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,11 +9,14 @@ RUN npm run build
 
 FROM node:22-bookworm-slim AS runtime
 WORKDIR /app
-ENV NODE_ENV=production
+ENV NODE_ENV=production OCR_ARTIFACT_ROOT=/data/ingestions
 COPY package.json package-lock.json ./
 RUN npm ci --omit=dev
 COPY --from=build /app/dist ./dist
 COPY --from=build /app/migrations ./migrations
 COPY public ./public
+RUN install -d -o node -g node -m 700 /data/ingestions
+VOLUME ["/data/ingestions"]
+USER node
 EXPOSE 3000
-CMD ["node", "dist/server.js"]
+CMD ["sh", "-c", "node dist/modules/catalog/migrations.js && exec node dist/server.js"]
diff --git a/docs/HISTORIAL_SESIONES.md b/docs/HISTORIAL_SESIONES.md
index 68c3a86..1a4b2aa 100644
--- a/docs/HISTORIAL_SESIONES.md
+++ b/docs/HISTORIAL_SESIONES.md
@@ -2,14 +2,64 @@
 
 **Proyecto:** Workspace de tools IA para empresas  
 **Modulo:** RAG  
-**Ultima actualizacion:** 2026-09-14
-**Ultima modificacion por:** Subagente OCR Unit 7 Client
+**Ultima actualizacion:** 2026-09-15
+**Ultima modificacion por:** Subagente Implement Unit 13 Local E2E
 **Estado:** Activo
 
 ---
 
 ## Registro de sesion
 
+### 2026-09-15 - Subagente Implement Unit 13 Local E2E
+**Agent:** Subagente Implement Unit 13 Local E2E · **Model:** openai/gpt-5.6-sol · **Session:** `ses_f5af65977ffehYI4eK2l177YAL`
+**Responsibility:** Implement only OCR Unit 13 tasks 7.1–7.3 under strict TDD, preserving Units 8–12 and excluding production acceptance task 7.4 and Git delivery work.
+**Work:** Added deterministic localhost E2E coverage for native, scanned review/approval/activation, mixed documents, resend identity, OCR-down fail-closed behavior, and catalog-down `503` responses. No production code changed.
+**Validation:** The new requirement tests passed immediately as 2/2 baseline/characterization evidence; canonical Node passed 78/78, offline Python passed 13/13, and check/build/whitespace/cleanup/process gates passed.
+**Accounting:** 183 functional plus 52 metadata changed lines, 235 total, within the 400-line Unit 13 budget. Tasks 7.1–7.3 are complete; production task 7.4 remains unchecked and untouched.
+**Files:** `tests/ocr/e2e.test.ts`, OpenSpec tasks/progress, and this history. No external or production service was contacted; `ocr-service/.venv` was preserved.
+
+---
+
+### 2026-09-15 - Subagente Implement Unit 12 Contracts Deploy
+**Agent:** Subagente Implement Unit 12 Contracts Deploy · **Model:** openai/gpt-5.6-sol · **Session:** `ses_f5b09a3a3ffetN0oeikOd4f33P`
+**Responsibility:** Implement only OCR Unit 12 tasks 6.3–6.4 under strict TDD, preserving Units 8–11 and excluding all 7.x E2E, production, and Git delivery work.
+**Work:** Added accurate authenticated OCR ingestion/status/review/correction/decision OpenAPI contracts, durable private OCR deployment defaults, and a non-root migration-aware RAG container with `/data/ingestions` volume wiring.
+**Validation:** Genuine initial RED was 0/3 and triangulation produced a second RED; focused GREEN passed 3/3, relevant regressions 45/45, canonical Node 76/76, check/build/whitespace gates, sanitized Docker build/inspection, cleanup, and process checks passed.
+**Accounting:** 219 functional plus 50 metadata changed lines, 269 total, within the 400-line Unit 12 budget. Tasks 6.3–6.4 are complete; all 7.x tasks remain pending.
+**Files:** `src/api/openapi.ts`, `src/config/env.ts`, `Dockerfile`, `tests/ocr/contracts-deploy.test.ts`, OpenSpec tasks/progress, and this history. The authoritative lifecycle/OCR contract remained read-only.
+
+---
+
+### 2026-09-15 - Subagente Implement Unit 11 Retention
+**Agent:** Subagente Implement Unit 11 Retention · **Model:** openai/gpt-5.6-sol · **Session:** `ses_f5b1c9293ffeDc3y3lJLgJ8UHF`
+**Responsibility:** Implement only OCR Unit 11 tasks 6.1–6.2 under strict TDD, preserving Units 8–10 and excluding OpenAPI, deployment, E2E, production, and Git delivery work.
+**Work:** Added state-aware OCR retention with exact TTL selection, review expiry, active-safe CAS deletion, restart resumption, reconciler execution, and flag-off candidate API isolation while preserving native synchronous ingestion.
+**Validation:** Genuine missing-module and activation-race RED evidence reached focused GREEN 6/6; relevant regressions passed 28/28; canonical Node passed 73/73; check, build, tracked/untracked whitespace, temporary-directory cleanup, and process checks passed.
+**Accounting:** 277 functional plus 50 metadata changed lines, 327 total, within the 400-line Unit 11 budget. Tasks 6.1–6.2 are complete; tasks 6.3–6.4 and 7.x remain pending.
+**Files:** `src/app.ts`, `src/modules/catalog/{repository,reconciler}.ts`, `src/modules/ocr/retention.ts`, `tests/ocr/{dispatcher,review,retention}.test.ts`, OpenSpec tasks/progress, and this history.
+
+---
+
+### 2026-09-15 - Subagente Implement Unit 10 Review UI
+**Agent:** Subagente Implement Unit 10 Review UI · **Model:** openai/gpt-5.6-sol · **Session:** `ses_f5b3af43bffewaqPFGRUOsi6Qt`
+**Responsibility:** Implement only OCR Unit 10 task 5.4 under strict TDD, preserving Units 8–9 and excluding retention, deploy, and E2E work.
+**Work:** Added authenticated, state-safe rejection with durable audit completion and zero indexing/activation side effects. Extended the existing static playground with authenticated candidate inspection, protected images, corrections, approval, and rejection controls.
+**Validation:** Genuine RED was 5/7; focused GREEN/refactor passed 7/7, the localhost rejection harness passed 1/1, canonical Node passed 67/67, and check/build/whitespace gates passed. No live external dependency or persistent process was used.
+**Accounting:** 271 functional plus 42 metadata changed lines, 313 total, within the 400-line Unit 10 budget. Task 5.4 is complete; tasks 6.x/7.x remain pending.
+**Files:** `src/app.ts`, `src/modules/ocr/review.ts`, `tests/ocr/review.test.ts`, `public/playground/{index.html,app.js,styles.css}`, OpenSpec tasks/progress, and this history.
+
+---
+
+### 2026-09-15 - Subagente Implement Unit 9 Core
+**Agent:** Subagente Implement Unit 9 Core · **Model:** openai/gpt-5.6-sol · **Session:** `ses_f5b4d20b9ffewoOAG5oiIu25fk`
+**Responsibility:** Implement only OCR Unit 9 tasks 5.1–5.3 under strict TDD, preserving Unit 8 and excluding rejection/UI work.
+**Work:** Added authenticated review/approval routes, auditable review and atomic correction boundaries, stale-write conflicts, and new/reusable indexing activation CAS behavior. Rejected candidates are refused by indexing without embeddings.
+**Validation:** RED failed on the missing indexing module; focused GREEN passed 5/5, canonical Node passed 65/65, and check/build/tracked plus untracked whitespace gates passed. No external service or persistent process was used.
+**Accounting:** 341 functional plus 38 metadata changed lines, 379 total. Unit 10 task 5.4 remains pending.
+**Files:** `src/app.ts`, `src/modules/ocr/{review,indexing}.ts`, `tests/ocr/review.test.ts`, OpenSpec tasks/progress, and this history.
+
+---
+
 ### 2026-09-14 - Agente RAG 2 - Diagnostico de resultados vacios de subagentes
 
 **Modelo:** openai/gpt-5.6-sol
@@ -32,6 +82,16 @@
 
 **Archivos modificados:**
 - `docs/HISTORIAL_SESIONES.md`
+
+---
+### 2026-09-15 - Subagente Recover OCR Unit 8
+**Agent:** Subagente Recover OCR Unit 8 · **Model:** openai/gpt-5.6-sol · **Session:** `ses_f5b7b4242ffekQxMZTYXOvPWGA`
+**Responsibility:** Recover only Unit 8 tasks 4.1, 4.4, and 4.5 under strict TDD; no Unit 9 or Git delivery work.
+**Work:** Completed OCR runtime wiring, exact lease recovery, deterministic pending reuse, mixed-document progress, upload/status HTTP behavior, and fail-closed retrieval evidence.
+**Validation:** Persisted evidence records focused dispatcher 9/9, focused repository OCR 6/6, canonical Node 60/60, and clean check/build/whitespace gates; curl returned 202 then authenticated 200. The initially leaked harness child was detected and terminated; temporary files and port were rechecked clean.
+**Evidence chain:** Native failed/interrupted revision `sha256:182cc73954a8518d03bd6c3ef5f4141b352aa9b69fca4177447d76deaddad223` preserved an 815-line candidate. The maintainer-selected `auto-chain` / `feature-branch-chain` preflight reset at revision `sha256:c0db82cf3db8ae790d34e4c310b998f97bb36864c97c3aa84e4c87ab77d07c2a` preserved that candidate and bounded only the additional recovery work. Fresh passed evidence revision: `sha256:e424afe7b2f8efd547dcfd0baf64ec1b46ac344f39afd87259560a094d59163f`.
+**Accounting:** Relative to committed HEAD `ac046e3`, the complete Unit 8 review slice is 1,045 functional changed lines plus 41 required metadata lines, for 1,086 total; it is not within 400 lines and has no `size:exception`. Only the post-reset recovery delta—350 functional plus 41 metadata lines, 391 total—fits the separate 400-line recovery objective.
+**Files:** `src/app.ts`, `src/config/env.ts`, `src/modules/{catalog,ingest,ocr}/`, `tests/ocr/dispatcher.test.ts`, OpenSpec tasks/progress, and this history.
 - `/home/pancho/Documentos/Empresa/IA/herramientas/docs/gentle-ai/SEGUIMIENTO_DESCUBRIMIENTOS_MEJORAS_GENTLE_AI.md`
 
 ---
diff --git a/openspec/changes/ocr-ingest-integration/apply-progress.md b/openspec/changes/ocr-ingest-integration/apply-progress.md
index 570f0ee..476b49b 100644
--- a/openspec/changes/ocr-ingest-integration/apply-progress.md
+++ b/openspec/changes/ocr-ingest-integration/apply-progress.md
@@ -3,9 +3,9 @@
 ## Current State
 
 - **Mode:** Strict TDD
-- **Delivery:** Feature-branch-chain; Units 1–7 implemented; the maintainer approved `size:exception` for Unit 7's cohesive 506 functional authored lines and 585 total native-accounting lines
-- **Completed tasks:** 1.1, 1.2, 1.3, 1.4, 2.1, 2.2, 2.3, 2.4, 2.5, 3.1, 3.2, 3.3, 3.4, 4.2, 4.3
-- **Overall task progress:** 15/30 complete
+- **Delivery:** Feature-branch-chain; Units 1–13 implemented as bounded slices; production acceptance remains pending
+- **Completed tasks:** 1.1–1.4, 2.1–2.5, 3.1–3.4, 4.1–4.5, 5.1–5.4, 6.1–6.4, 7.1–7.3
+- **Overall task progress:** 29/30 complete
 
 ## Unit 1: Migration
 
@@ -271,3 +271,158 @@ None — the migration follows the proposal, specifications, design, and closed
 - Corrective work unit `unit-7-size-exception-validation` uses attempt token `sha256:0109cfd8d3b37a5672c65a37700269b89cb80e4e357a39f68a920779a1715c39` and must settle against the failed revision through the parent.
 - Production and test files remain unchanged for the corrective rerun; only approval/reset evidence and fresh validation metadata may change.
 - Task 4.1 remains pending, while tasks 4.2 and 4.3 remain complete. Unit 8 was not started.
+
+## Unit 8: Dispatcher and Runtime Orchestration
+- Completed multi-document progress, uniqueness-race reuse, exact lease recovery, persisted-key dispatch, default runtime wiring, authenticated status, and fail-closed retrieval; no activation or embeddings occur on OCR failure.
+
+### Evidence Chain and Review Accounting
+- **Complete review slice:** Relative to committed HEAD `ac046e3`, Unit 8 contains 1,045 functional changed lines plus 41 required metadata lines, for 1,086 total changed lines. The complete slice is not within 400 lines, and no `size:exception` was approved or recorded for it.
+- **Interrupted preserved candidate:** Native failed/interrupted revision `sha256:182cc73954a8518d03bd6c3ef5f4141b352aa9b69fca4177447d76deaddad223` contained 815 changed lines.
+- **Auto-chain reset:** The maintainer-selected preflight strategy was `auto-chain` with `feature-branch-chain`. Native reset revision `sha256:c0db82cf3db8ae790d34e4c310b998f97bb36864c97c3aa84e4c87ab77d07c2a` preserved the interrupted candidate and scoped the next bounded recovery objective only to additional changes; it did not approve the complete Unit 8 slice as a size exception.
+- **Recovery delta:** After that reset, the bounded recovery added 350 functional changed lines plus 41 required metadata lines, for 391 total changed lines within the separate 400-line recovery objective.
+- **Passed recovery:** Fresh passed evidence revision `sha256:e424afe7b2f8efd547dcfd0baf64ec1b46ac344f39afd87259560a094d59163f` closes the interrupted → auto-chain reset → passed recovery chain.
+
+### TDD Cycle Evidence
+| Task | Test File | Layer | Safety Net | RED | GREEN | TRIANGULATE | REFACTOR |
+|---|---|---|---|---|---|---|---|
+| 4.1 | `tests/ocr/{dispatcher,client}.test.ts` | HTTP/integration | Recovered baseline 7/7 passed; not labeled RED | New scenarios produced genuine 5/9 RED; catalog `/retrieve` already failed closed | Unit 8 9/9; client 6/6 | 201/202/status, OCR failure, 503 retrieval, retries/integrity | Consolidated persisted-key assertion; 9/9 |
+| 4.4 | `tests/ocr/dispatcher.test.ts` | Unit/integration | Recovered baseline 7/7 | Exact recovery failed by claiming unrelated work | 9/9 | Live/new queue separation plus periodic dispatch | Exact-job dispatch helper; 9/9 |
+| 4.5 | `tests/ocr/dispatcher.test.ts` | HTTP/filesystem | Recovered baseline 7/7 | Runtime wiring RED was 8/10 | 9/9 | Multipart upload, durable reload, duplicate race, mixed documents | Shared queue drain; 9/9 |
+
+### Work Unit Evidence
+| Evidence | Result |
+|---|---|
+| Focused test | `NODE_ENV=test npx --no-install tsx --test tests/ocr/dispatcher.test.ts` — 9 passed, 0 failed. |
+| Focused repository OCR test | `NODE_ENV=test npx --no-install tsx --test tests/catalog/repository-ocr.test.ts` — 6 passed, 0 failed. |
+| Canonical Node test | `npm test` — 60 passed, 0 failed. |
+| Runtime harness | Bounded localhost curl — ingest `202/ocr_queued`; authenticated status `200/ocr_queued`; leaked child from initial shell cleanup was detected, terminated, and port/temp cleanup reverified. |
+| Rollback boundary | Revert Unit 8 deltas in `src/{app,config/env}.ts`, catalog/ingest/client modules, `src/modules/ocr/dispatcher.ts`, and its test; preserve Units 1–7. |
+
+## Unit 9: Review and Indexing Core
+- Added authenticated review/approval routes with injectable service boundaries, immutable correction preparation, stale/duplicate conflict guards, and new/reusable activation CAS behavior. Rejection transition and playground UI remain Unit 10.
+
+### TDD Cycle Evidence
+| Task | Test File | Layer | Safety Net | RED | GREEN | TRIANGULATE | REFACTOR |
+|---|---|---|---|---|---|---|---|
+| 5.1 | `tests/ocr/review.test.ts` | HTTP/unit | App suites 9/9 and 20/20 | Missing `indexing.js`; exit 1 | 5/5 | Unauthorized/premature, candidate/line/active staleness, duplicate targets, new/reusable races, rejected no-index | Assertions remained 5/5 |
+| 5.2 | `tests/ocr/review.test.ts` | HTTP/unit | 29/29 | Tests preceded `review.ts` | 5/5 | Audit view plus two corrections and four conflict paths | Clone prevents failed commits mutating loaded candidates; 5/5 |
+| 5.3 | `tests/ocr/review.test.ts` | Unit | N/A (new file) | Tests preceded `indexing.ts` | 5/5 | New/reusable true/false, both CAS races, rejected no-index | Named CAS error mapping; 5/5 |
+
+### Work Unit Evidence
+| Evidence | Result |
+|---|---|
+| Focused test | `NODE_ENV=test npx --no-install tsx --test tests/ocr/review.test.ts` — exit 0; 5 passed, 0 failed. |
+| Runtime harness | Same runner with `--test-name-pattern "review HTTP rejects"` — exit 0; 1 passed; real localhost Express requests returned authenticated boundary outcomes without external services. |
+| Rollback boundary | Remove `src/modules/ocr/{review,indexing}.ts` and `tests/ocr/review.test.ts`; revert only the Unit 9 route additions in `src/app.ts` and Unit 9 metadata. Preserve Units 1–8. |
+
+### Validation and Boundary
+- Canonical `NODE_ENV=test npm test` passed 65/65; `npm run check`, `npm run build`, tracked whitespace, and no-index whitespace checks passed.
+- Unit 9 adds 341 functional changed lines and 38 metadata changed lines, 379 total, within the 400-line budget. No live PostgreSQL, OpenAI, Qdrant, or OCR process was used; no test process remained.
+- Start: Unit 8 dispatch/status is complete. End: review/correction and indexing/CAS ports plus authenticated routes are green. Unit 10 task 5.4 remains unchecked.
+
+## Unit 10: Rejection and Review UI
+- Added authenticated rejection with current candidate-hash and state guards, required audit fields, durable store completion before success, and no indexing or activation call.
+- Extended the existing static playground with authenticated candidate loading, protected page images, native/raw/candidate comparisons, line confidence/boxes, corrections, risks, approval, and rejection controls.
+
+### TDD Cycle Evidence
+| Task | Test File | Layer | Safety Net | RED | GREEN | TRIANGULATE | REFACTOR |
+|---|---|---|---|---|---|---|---|
+| 5.4 | `tests/ocr/review.test.ts` | HTTP integration/static HTTP | Existing review suite passed 5/5 before edits. | Genuine RED passed only 5/7: rejection returned 404 instead of authenticated 401 and the playground lacked the review contract. A malformed-body edge then returned 409 instead of 400. | Focused suite passed 7/7 after minimal rejection and UI implementation. | Unauthorized, malformed, stale-hash, successful, repeated-state, durable-status, and static audit-field paths exercise distinct outcomes. | Shared UI decision-state helper extracted; focused suite remained 7/7. |
+
+### Work Unit Evidence
+| Evidence | Result |
+|---|---|
+| Focused test command and exact result | `NODE_ENV=test npx --no-install tsx --test tests/ocr/review.test.ts` — exit 0; 7 passed, 0 failed. |
+| Runtime harness command/scenario and exact result | `NODE_ENV=test npx --no-install tsx --test --test-name-pattern "authenticated rejection" tests/ocr/review.test.ts` — exit 0; 1 passed, 0 failed. Real localhost Express requests returned 401/400/409/200, persisted the rejected audit state through the injected store, retrieved rejected status, and made zero indexing calls. |
+| Rollback boundary | Revert Unit 10 deltas in `src/app.ts`, `src/modules/ocr/review.ts`, `tests/ocr/review.test.ts`, and `public/playground/{index.html,app.js,styles.css}` plus Unit 10 metadata; preserve Units 1–9. |
+
+### Validation and Boundary
+- Canonical `NODE_ENV=test npm test` passed 67/67; `npm run check` and `npm run build` exited 0.
+- Previously observed tracked `git diff --check` exited 0; no-index whitespace checks for Unit 10's untracked `src/modules/ocr/review.ts` and `tests/ocr/review.test.ts` exited 0.
+- Unit 10 adds 271 functional and 42 metadata changed lines, 313 total, below the 400-line budget. No live database, embedding, vector, OCR, or external service was used; no persistent process was started.
+- Start: Unit 9 review/indexing ports and approval routes are green. End: rejection isolation and the static review UI are green. Retention, deploy, OpenAPI, and E2E tasks remain untouched.
+- No specification or design deviation.
+
+## Unit 11: Retention and Flag-Off Isolation
+
+### Implementation Summary
+- Added a retention boundary that expires 30-day reviews before deletion, retains failed/rejected artifacts for 7 days, and retains superseded OCR artifacts for 30 days.
+- Added exact state/artifact CAS claims, active-pointer checks, activation exclusion after a deletion claim, and restart-safe `retention_deleting→retention_deleted` completion.
+- Wired retention into the existing exclusive reconciler cycle and made status/review/decision APIs return `404` without store access while OCR is disabled; native synchronous ingestion remains unchanged.
+
+### TDD Cycle Evidence
+| Task | Test File | Layer | Safety Net | RED | GREEN | TRIANGULATE | REFACTOR |
+|---|---|---|---|---|---|---|---|
+| 6.1 | `tests/ocr/retention.test.ts` | Repository/HTTP/filesystem integration | Existing repository, dispatcher, and review suites passed 22/22. | Genuine missing-module RED failed before `retention.ts`; activation-race RED then failed 0/1 with “Missing expected rejection.” | Focused suite passed 6/6. | Exact TTL SQL, active pointer/state guards, flag-off `201/404`, and deletion-claim activation conflict exercise independent paths. | No production refactor was needed; two test-side expectations were corrected during GREEN without weakening behavior. |
+| 6.2 | `tests/ocr/retention.test.ts` | Filesystem/reconciler integration | Same 22/22 safety net. | The missing-module RED preceded all production retention code. | Focused suite passed 6/6; relevant regression set passed 28/28. | Review expiry, terminal deletion, active preservation, simulated restart, repeat no-op, and exclusive reconciler execution cover distinct paths. | Named store boundary keeps filesystem behavior isolated; final focused suite remained 6/6. |
+
+### Work Unit Evidence
+| Evidence | Result |
+|---|---|
+| Focused test command and exact result | `NODE_ENV=test npx --no-install tsx --test tests/ocr/retention.test.ts` — exit 0; 6 passed, 0 failed. |
+| Runtime harness command/scenario and exact result | The focused suite used real temporary directories and localhost Express requests: interrupted deletion removed only the claimed directory, resumed to `retention_deleted`, repeated as a no-op, preserved the active directory, returned native `201`, and returned `404` for all disabled OCR candidate APIs without store access. |
+| Rollback boundary | Remove `src/modules/ocr/retention.ts` and `tests/ocr/retention.test.ts`; revert only Unit 11 seams in `src/app.ts`, catalog repository/reconciler, and explicit enabled-state setup in dispatcher/review tests. Preserve Units 1–10. |
+
+### Validation and Boundary
+- Relevant regression suites passed 28/28 after explicitly enabling OCR in pre-existing enabled-path tests; the initial 19/22 run exposed only that test-fixture assumption.
+- Canonical `NODE_ENV=test npm test` passed 73/73; `npm run check`, `npm run build`, tracked whitespace, and no-index whitespace checks for all seven intended untracked files passed.
+- Temporary `rag-retention-*` directories were removed and no `tsx --test` or Node test process remained. No live database, OCR, embedding, vector, or external service was used; `ocr-service/.venv` was preserved.
+- Unit 11 adds 277 functional changed lines and 50 metadata changed lines, 327 total, below the 400-line budget.
+- Start: Unit 10 rejection/UI is complete. End: tasks 6.1–6.2 are complete. OpenAPI, deployment/configuration, E2E, production, commit, push, and PR work remain untouched.
+- No specification or design deviation.
+
+## Unit 12: Contracts and Deployment Wiring
+
+### Implementation Summary
+- Documented OCR `202` ingestion variants and authenticated status, review, correction/approval, and rejection routes with behavior-matched success and error responses.
+- Added progress, review evidence, optimistic correction, decision, and structured error schemas while preserving the legacy-disabled `202` variants.
+- Added private durable artifact defaults and OCR limits/timeouts; the root image now declares `/data/ingestions`, runs as `node`, and applies catalog migrations before startup without embedding secrets.
+
+### TDD Cycle Evidence
+| Task | Test File | Layer | Safety Net | RED | GREEN | TRIANGULATE | REFACTOR |
+|---|---|---|---|---|---|---|---|
+| 6.3 | `tests/ocr/contracts-deploy.test.ts` | OpenAPI contract | Existing lifecycle/dispatcher/review/retention suites passed 42/42. | Genuine initial RED was 0/3: OCR `202` referenced the native schema and OCR routes/schemas were absent. | Focused suite passed 3/3. | A second RED required legacy-disabled `202` variants and accurate help authentication; final suite remained 3/3. | Shared schema references kept nested contracts reviewable; no behavior changed. |
+| 6.4 | `tests/ocr/contracts-deploy.test.ts` | Config/static container | Same 42/42 safety net. | Initial RED found the old relative artifact root, absent limits/timeouts, volume, non-root user, and migration-aware command. | Focused suite passed 3/3; sanitized Docker build and image inspection passed. | A second RED required explicit runtime artifact-root wiring; final suite remained 3/3. | No further refactor needed. |
+
+### Work Unit Evidence
+| Evidence | Result |
+|---|---|
+| Focused test command and exact result | `NODE_ENV=test npx --no-install tsx --test tests/ocr/contracts-deploy.test.ts` — exit 0; 3 passed, 0 failed. |
+| Relevant regression command and exact result | Lifecycle, dispatcher, review, retention, and contract suites — exit 0; 45 passed, 0 failed. |
+| Runtime harness | N/A — Unit 12 is static-only by task forecast. A sanitized-context Docker build succeeded and inspection proved user `node`, durable volume, production artifact root, and migration-before-server command. |
+| Rollback boundary | Remove `tests/ocr/contracts-deploy.test.ts` and revert only Unit 12 deltas in `src/api/openapi.ts`, `src/config/env.ts`, and `Dockerfile`; preserve Units 1–11. |
+
+### Validation and Boundary
+- Canonical `NODE_ENV=test npm test` passed 76/76; `npm run check`, `npm run build`, tracked whitespace, and all intended-untracked whitespace checks passed.
+- Docker build `rag-service:unit12-contract` succeeded from a sanitized 430.31 kB context; inspection matched the deployment contract. The image and temporary context were removed, no test process remained, and `ocr-service/.venv` was preserved.
+- Unit 12 adds 219 functional lines and 50 metadata lines, 269 total, below the 400-line budget.
+- Start: Unit 11 retention is complete. End: tasks 6.3–6.4 are complete. Unit 13 / all 7.x E2E and production work remains untouched.
+- `docs/CONTRATO_CICLO_VIDA_Y_OCR.md` was read as authoritative and remained unchanged. No specification or design deviation.
+
+## Unit 13: Local Deterministic E2E and Complete Gate
+
+### Implementation Summary
+- Added a bounded localhost HTTP suite covering native `201`, scanned `202 → review → approve → active`, and exact mixed native/OCR page reporting.
+- Added resend identity reuse, fail-closed OCR exhaustion, and catalog-unavailable `503` coverage without external services.
+- Made no production-code changes; the new scenarios passed immediately as baseline/characterization evidence, so no RED was fabricated.
+
+### TDD Cycle Evidence
+| Task | Test File | Layer | Safety Net | RED / Baseline | GREEN | TRIANGULATE | REFACTOR |
+|---|---|---|---|---|---|---|---|
+| 7.1 | `tests/ocr/e2e.test.ts` | Local HTTP E2E | Existing OCR suites passed 28/28. | Baseline/characterization: the test was written first and passed 2/2 immediately; no implementation gap existed at the local fake boundary. | Focused suite passed 2/2. | Native, scanned, corrected approval, post-activation status, and mixed page methods exercise distinct paths. | Test-only state naming improved; focused suite remained 2/2. |
+| 7.2 | `tests/ocr/e2e.test.ts` | Local HTTP/dispatcher E2E | Same 28/28 safety net. | Baseline/characterization: resend, OCR-down, and catalog-down assertions passed immediately; no production code was written. | Focused suite passed 2/2. | Duplicate resend, terminal dispatch failure, status `503`, and retrieval `503` cover independent outcomes. | None needed beyond the shared test harness. |
+| 7.3 | Gate commands below | Complete gate | Focused E2E passed 2/2. | N/A — verification-only task with no production behavior to implement. | All required gates passed. | Node type/build/test and offline Python tests provide independent stack evidence. | N/A — no production change. |
+
+### Work Unit Evidence
+| Evidence | Result |
+|---|---|
+| Focused test | `NODE_ENV=test npx --no-install tsx --test tests/ocr/e2e.test.ts` — exit 0; 2 passed, 0 failed. |
+| Runtime harness | The focused suite started bounded ephemeral localhost Express servers and exercised real HTTP requests through ingest, status, review, approval, and retrieval routes; all servers closed through test cleanup. |
+| Complete gate | `npm run check`, `npm run build`, and `NODE_ENV=test npm test` exited 0; canonical Node passed 78/78. `PYTHONDONTWRITEBYTECODE=1 ocr-service/.venv/bin/python -m pytest ocr-service/tests -q` passed 13/13 offline with one dependency deprecation warning. |
+| Rollback boundary | Remove `tests/ocr/e2e.test.ts` and revert only tasks 7.1–7.3 plus this Unit 13 progress/history metadata; preserve Units 1–12. |
+
+### Validation and Boundary
+- Unit 13 adds 183 functional lines. Required tasks/progress/history metadata adds 52 changed lines, for 235 total, below the 400-line budget.
+- Tracked and complete intended-untracked whitespace checks passed. No matching `tsx --test`, E2E Node, or OCR Uvicorn process remained after the corrected self-excluding process check.
+- Intended untracked inventory: `src/modules/ocr/{dispatcher,indexing,retention,review}.ts`; `tests/ocr/{contracts-deploy,dispatcher,e2e,retention,review}.test.ts`.
+- Tasks 7.1–7.3 are complete. Task 7.4 remains unchecked and untouched; no production flag, service, database, vector store, embedding provider, OCR endpoint, commit, push, or PR was used.
diff --git a/openspec/changes/ocr-ingest-integration/tasks.md b/openspec/changes/ocr-ingest-integration/tasks.md
index c7fb89d..f1a2351 100644
--- a/openspec/changes/ocr-ingest-integration/tasks.md
+++ b/openspec/changes/ocr-ingest-integration/tasks.md
@@ -51,29 +51,29 @@ Tracker feature/ocr-ingest-integration is draft/no-merge and sole main target. P
 
 ## 4 Orchestration (Units 7–8; O1–O4)
 
-- [ ] 4.1 RED HTTP: flag-off 201; OCR 202/status; OCR-down fail-closed; catalog-down 503; retries/integrity
+- [x] 4.1 RED HTTP: flag-off 201; OCR 202/status; OCR-down fail-closed; catalog-down 503; retries/integrity
 - [x] 4.2 GREEN: `src/modules/ocr/client.ts` retries and integrity
 - [x] 4.3 GREEN: `src/modules/ocr/artifacts.ts` originals, manifest, sweep
-- [ ] 4.4 GREEN: `src/modules/ocr/dispatcher.ts` leases; `src/modules/catalog/reconciler.ts`
-- [ ] 4.5 GREEN: `src/modules/ingest/service.ts` branch; `src/app.ts` upload/status
+- [x] 4.4 GREEN: `src/modules/ocr/dispatcher.ts` leases; `src/modules/catalog/reconciler.ts`
+- [x] 4.5 GREEN: `src/modules/ingest/service.ts` branch; `src/app.ts` upload/status
 
 ## 5 Review (Units 9–10; V1–V4)
 
-- [ ] 5.1 RED: auth/premature access; atomic corrections/stale 409; new/reusable activation race; reject/no embeddings
-- [ ] 5.2 GREEN: `src/modules/ocr/review.ts` view, corrections, conflicts
-- [ ] 5.3 GREEN: `src/modules/ocr/indexing.ts` CAS; new/reusable activate_requested=true activates, false stays ready
-- [ ] 5.4 GREEN: rejection and `public/playground/` review UI
+- [x] 5.1 RED: auth/premature access; atomic corrections/stale 409; new/reusable activation race; reject/no embeddings
+- [x] 5.2 GREEN: `src/modules/ocr/review.ts` view, corrections, conflicts
+- [x] 5.3 GREEN: `src/modules/ocr/indexing.ts` CAS; new/reusable activate_requested=true activates, false stays ready
+- [x] 5.4 GREEN: rejection and `public/playground/` review UI
 
 ## 6 Retention/Deploy (Units 11–12; O5/V5)
 
-- [ ] 6.1 RED: TTL/CAS/resume/active protection; flag-off native-only and candidate invisibility
-- [ ] 6.2 GREEN: `src/modules/ocr/retention.ts`
-- [ ] 6.3 GREEN: `src/api/openapi.ts` OCR/status/review contracts
-- [ ] 6.4 GREEN: `src/config/env.ts`, `Dockerfile`; follow `docs/CONTRATO_CICLO_VIDA_Y_OCR.md` (read-only)
+- [x] 6.1 RED: TTL/CAS/resume/active protection; flag-off native-only and candidate invisibility
+- [x] 6.2 GREEN: `src/modules/ocr/retention.ts`
+- [x] 6.3 GREEN: `src/api/openapi.ts` OCR/status/review contracts
+- [x] 6.4 GREEN: `src/config/env.ts`, `Dockerfile`; follow `docs/CONTRATO_CICLO_VIDA_Y_OCR.md` (read-only)
 
 ## 7 E2E (Unit 13; V6)
 
-- [ ] 7.1 E2E: native 201; scanned 202→review→approve→active; mixed
-- [ ] 7.2 E2E: resend, OCR-down fail-closed, catalog-down 503
-- [ ] 7.3 Gate: check, build, test, offline pytest
+- [x] 7.1 E2E: native 201; scanned 202→review→approve→active; mixed
+- [x] 7.2 E2E: resend, OCR-down fail-closed, catalog-down 503
+- [x] 7.3 Gate: check, build, test, offline pytest
 - [ ] 7.4 Production: flag-off verify→enable→FacturaTech 34 entries; CBG04a/FAT07/DSAU08/NSAV06
diff --git a/public/playground/app.js b/public/playground/app.js
index 188dc14..7316de6 100644
--- a/public/playground/app.js
+++ b/public/playground/app.js
@@ -10,6 +10,9 @@ const manualLogButton = document.getElementById("manualLogButton");
 const presetDocs = document.getElementById("presetDocs");
 const presetRagDocs = document.getElementById("presetRagDocs");
 const presetCode = document.getElementById("presetCode");
+const loadReviewButton = document.getElementById("loadReviewButton");
+const approveReviewButton = document.getElementById("approveReviewButton");
+const rejectReviewButton = document.getElementById("rejectReviewButton");
 
 const healthResult = document.getElementById("healthResult");
 const ingestResult = document.getElementById("ingestResult");
@@ -24,6 +27,12 @@ const contextStatusText = document.getElementById("contextStatusText");
 const contextScopeText = document.getElementById("contextScopeText");
 const logsResult = document.getElementById("logsResult");
 const logCounterValue = document.getElementById("logCounterValue");
+const reviewCandidate = document.getElementById("reviewCandidate");
+const reviewResult = document.getElementById("reviewResult");
+const reviewVersionId = document.getElementById("reviewVersionId");
+const reviewToken = document.getElementById("reviewToken");
+const reviewedBy = document.getElementById("reviewedBy");
+const rejectionReason = document.getElementById("rejectionReason");
 
 const ingestSourceType = document.getElementById("ingestSourceType");
 const ingestScopeMode = document.getElementById("ingestScopeMode");
@@ -69,6 +78,8 @@ let lastBootstrapMeta = null;
 let chatHistory = [];
 let availableScopes = [];
 let lastInteraction = null;
+let loadedReview = null;
+let reviewImageUrls = [];
 
 let currentUploadType = null; // 'file' o 'folder'
 
@@ -179,6 +190,72 @@ function request(url, payload, method = "POST") {
   });
 }
 
+async function authorizedReviewRequest(path, payload) {
+  const response = await fetch(`/ingestions/${encodeURIComponent(reviewVersionId.value.trim())}${path}`, {
+    method: payload ? "POST" : "GET",
+    headers: { Authorization: `Bearer ${reviewToken.value}`, ...(payload ? { "Content-Type": "application/json" } : {}) },
+    body: payload ? JSON.stringify(payload) : undefined
+  });
+  const data = await response.json();
+  if (!response.ok) throw new Error(`${data.code || response.status}: ${data.error || "Review request failed"}`);
+  return data;
+}
+
+function reviewText(name, value) {
+  const element = document.createElement("pre");
+  element.textContent = `${name}\n${Array.isArray(value) ? value.join("\n") : value || "(empty)"}`;
+  return element;
+}
+
+async function renderReview(candidate) {
+  for (const url of reviewImageUrls) URL.revokeObjectURL(url);
+  reviewImageUrls = [];
+  reviewCandidate.replaceChildren();
+  const identity = document.createElement("p");
+  identity.textContent = `Candidate SHA-256: ${candidate.candidateSha256} · Base active version: ${candidate.baseActiveVersionId || "none"}`;
+  reviewCandidate.append(identity);
+  for (const document of candidate.documents) for (const page of document.pages) {
+    const card = document.createElement("article");
+    card.className = "review-page";
+    const title = document.createElement("h3");
+    title.textContent = `${document.documentId} · Page ${page.page}`;
+    const image = document.createElement("img");
+    image.className = "review-image";
+    image.alt = `Source page ${page.page}`;
+    card.append(title, image, reviewText("Native text", page.nativeText), reviewText("Raw OCR", page.ocr.text), reviewText("Candidate text", page.candidateText), reviewText("Differences", page.differences), reviewText("Risks", page.risks));
+    for (const line of page.ocr.lines) {
+      const label = document.createElement("label");
+      label.className = "review-line";
+      const detail = document.createElement("span");
+      detail.textContent = `${line.lineId} · confidence ${line.confidence} · bbox ${line.bbox.join(", ")}`;
+      const input = document.createElement("textarea");
+      input.value = line.text;
+      Object.assign(input.dataset, { original: line.text, documentId: document.documentId, page: String(page.page), lineId: line.lineId, expectedLineSha256: line.lineSha256 });
+      label.append(detail, input);
+      card.append(label);
+    }
+    reviewCandidate.append(card);
+    void fetch(page.imageUrl, { headers: { Authorization: `Bearer ${reviewToken.value}` } }).then(async (response) => {
+      if (!response.ok) throw new Error(`HTTP ${response.status}`);
+      const url = URL.createObjectURL(await response.blob());
+      reviewImageUrls.push(url);
+      image.src = url;
+    }).catch((error) => { image.alt = `Protected image unavailable: ${error}`; });
+  }
+}
+
+function reviewDecisionBase() {
+  if (!loadedReview) throw new Error("Load a current candidate first");
+  const reviewer = reviewedBy.value.trim();
+  if (!reviewer) throw new Error("Reviewer identity is required");
+  return { candidateSha256: loadedReview.candidateSha256, reviewedBy: reviewer };
+}
+
+function setReviewDecisionEnabled(enabled) {
+  approveReviewButton.disabled = !enabled;
+  rejectReviewButton.disabled = !enabled;
+}
+
 function renderBootstrapContext() {
   if (!lastBootstrapContext) {
     bootstrapContextResult.textContent = "Aun no hay bootstrap cargado.";
@@ -468,6 +545,54 @@ ingestButton.addEventListener("click", async () => {
   }
 });
 
+loadReviewButton.addEventListener("click", async () => {
+  reviewResult.textContent = "Loading authenticated review...";
+  try {
+    loadedReview = await authorizedReviewRequest("/review");
+    await renderReview(loadedReview);
+    setReviewDecisionEnabled(true);
+    reviewResult.textContent = `Loaded review_required version ${loadedReview.versionId}.`;
+  } catch (error) {
+    loadedReview = null;
+    setReviewDecisionEnabled(false);
+    reviewCandidate.textContent = "No candidate loaded.";
+    reviewResult.textContent = String(error);
+  }
+});
+
+approveReviewButton.addEventListener("click", async () => {
+  reviewResult.textContent = "Submitting reviewed text...";
+  try {
+    const corrections = [...reviewCandidate.querySelectorAll(".review-line textarea")]
+      .filter((input) => input.value !== input.dataset.original)
+      .map((input) => ({
+        documentId: input.dataset.documentId,
+        page: Number(input.dataset.page),
+        lineId: input.dataset.lineId,
+        expectedLineSha256: input.dataset.expectedLineSha256,
+        replacementText: input.value
+      }));
+    const result = await authorizedReviewRequest("/approve", { ...reviewDecisionBase(), expectedActiveVersionId: loadedReview.baseActiveVersionId, corrections });
+    reviewResult.textContent = format(result);
+    setReviewDecisionEnabled(false);
+  } catch (error) {
+    reviewResult.textContent = String(error);
+  }
+});
+
+rejectReviewButton.addEventListener("click", async () => {
+  reviewResult.textContent = "Rejecting candidate...";
+  try {
+    const reason = rejectionReason.value.trim();
+    if (!reason) throw new Error("Rejection reason is required");
+    const result = await authorizedReviewRequest("/reject", { ...reviewDecisionBase(), reason });
+    reviewResult.textContent = format(result);
+    setReviewDecisionEnabled(false);
+  } catch (error) {
+    reviewResult.textContent = String(error);
+  }
+});
+
 cleanupButton.addEventListener("click", async () => {
   if (!cleanupScopeSelect.value) {
     cleanupResult.textContent = "Error: Debes seleccionar un scope primero.";
diff --git a/public/playground/index.html b/public/playground/index.html
index 628fbcd..976ca01 100644
--- a/public/playground/index.html
+++ b/public/playground/index.html
@@ -29,11 +29,40 @@
 
       <section class="tabs">
         <button class="tab-button active" data-tab="ingest">Ingesta</button>
+        <button class="tab-button" data-tab="review">OCR Review</button>
         <button class="tab-button" data-tab="cleanup">Limpieza</button>
         <button class="tab-button" data-tab="bootstrap">Bootstrap</button>
         <button class="tab-button" data-tab="chat">Chat</button>
       </section>
 
+      <section id="tab-review" class="tab-panel">
+        <article class="panel">
+          <h2>OCR Candidate Review</h2>
+          <p class="helper">Inspect every page and submit an authenticated approval or rejection. OCR content remains unavailable to retrieval until approval completes.</p>
+          <div class="grid single-grid">
+            <label>Version ID
+              <input id="reviewVersionId" autocomplete="off" placeholder="OCR version UUID" />
+            </label>
+            <label>Administrator token
+              <input id="reviewToken" type="password" autocomplete="off" />
+            </label>
+            <label>Reviewed by
+              <input id="reviewedBy" autocomplete="off" placeholder="Reviewer identity" />
+            </label>
+            <label>Rejection reason
+              <textarea id="rejectionReason" rows="2" placeholder="Required only when rejecting"></textarea>
+            </label>
+          </div>
+          <div class="actions">
+            <button id="loadReviewButton">Load candidate</button>
+            <button id="approveReviewButton" disabled>Approve reviewed text</button>
+            <button id="rejectReviewButton" class="danger" disabled>Reject candidate</button>
+          </div>
+          <div id="reviewCandidate" class="review-candidate" aria-live="polite">No candidate loaded.</div>
+          <pre id="reviewResult">No review request submitted.</pre>
+        </article>
+      </section>
+
       <section id="tab-ingest" class="tab-panel active">
         <article class="panel">
           <h2>Ingesta</h2>
diff --git a/public/playground/styles.css b/public/playground/styles.css
index 37b35c2..44987e9 100644
--- a/public/playground/styles.css
+++ b/public/playground/styles.css
@@ -182,6 +182,23 @@ button.secondary {
   border: 1px solid var(--border);
 }
 
+button.danger { background: var(--danger); color: #0b1020; }
+button:disabled { cursor: not-allowed; opacity: 0.45; }
+
+.review-candidate { display: grid; gap: 16px; margin: 20px 0; }
+.review-page {
+  display: grid;
+  gap: 14px;
+  padding: 18px;
+  border: 1px solid var(--border);
+  border-radius: 16px;
+  background: #0b1020;
+}
+.review-page pre { margin: 0; min-height: 0; }
+.review-image { max-width: 100%; max-height: 520px; object-fit: contain; justify-self: start; }
+.review-line { display: grid; gap: 6px; }
+.review-line span { color: var(--muted); font-size: 12px; }
+
 .actions, .checkbox {
   display: flex;
   gap: 12px;
diff --git a/src/api/openapi.ts b/src/api/openapi.ts
index 8824635..f809cd5 100644
--- a/src/api/openapi.ts
+++ b/src/api/openapi.ts
@@ -30,6 +30,7 @@ export const openApiDocument = {
     { name: "Discovery", description: "API contract and browser playground." },
     { name: "Status", description: "Service capabilities and available resources." },
     { name: "Ingestion", description: "Knowledge ingestion and cleanup." },
+    { name: "OCR Review", description: "Authenticated OCR progress, review, correction, and decisions." },
     { name: "Lifecycle", description: "Knowledge source versions, activation, rollback, and purge." },
     { name: "Retrieval", description: "Context retrieval and model-backed answers." },
     { name: "Evaluation", description: "Evaluation log capture and review." }
@@ -222,7 +223,7 @@ export const openApiDocument = {
         },
         responses: {
           "201": jsonResponse("Lifecycle ingestion completed and committed.", ref("IngestResponse")),
-          "202": jsonResponse("Legacy ingestion completed and accepted while lifecycle enforcement is disabled.", ref("IngestResponse")),
+          "202": jsonResponse("OCR ingestion accepted, or legacy ingestion accepted while lifecycle enforcement is disabled.", { oneOf: [ref("OcrAccepted"), ref("IngestResponse")] }),
           "400": jsonResponse("Invalid lifecycle activation request.", ref("Error")),
           "409": jsonResponse("Concurrent active version change or reusable version in progress.", ref("Error")),
           "422": jsonResponse("Empty or unsupported source.", ref("Error")),
@@ -245,7 +246,7 @@ export const openApiDocument = {
         },
         responses: {
           "201": jsonResponse("Lifecycle upload ingested successfully.", ref("UploadIngestResponse")),
-          "202": jsonResponse("Legacy upload ingested successfully while lifecycle enforcement is disabled.", ref("UploadIngestResponse")),
+          "202": jsonResponse("OCR upload accepted, or legacy upload accepted while lifecycle enforcement is disabled.", { oneOf: [ref("OcrUploadAccepted"), ref("UploadIngestResponse")] }),
           "400": jsonResponse("The file field is missing.", ref("Error"), { ok: false, error: "Missing file upload" }),
           "409": jsonResponse("Concurrent active version change or reusable version in progress.", ref("Error")),
           "422": jsonResponse("Empty or unsupported source.", ref("Error")),
@@ -254,6 +255,60 @@ export const openApiDocument = {
         }
       }
     },
+    "/ingestions/{versionId}": {
+      get: {
+        tags: ["OCR Review"], summary: "Get OCR ingestion progress", security: [{ bearerAuth: [] }],
+        parameters: [{ name: "versionId", in: "path", required: true, schema: { type: "string", format: "uuid" } }],
+        responses: {
+          "200": jsonResponse("Current document and page progress.", ref("IngestionStatus")),
+          "401": jsonResponse("Missing or invalid lifecycle admin token.", ref("Error")),
+          "404": jsonResponse("OCR is disabled or the ingestion does not exist.", ref("Error")),
+          "503": serverError, "500": serverError
+        }
+      }
+    },
+    "/ingestions/{versionId}/review": {
+      get: {
+        tags: ["OCR Review"], summary: "Inspect an OCR candidate", security: [{ bearerAuth: [] }],
+        parameters: [{ name: "versionId", in: "path", required: true, schema: { type: "string", format: "uuid" } }],
+        responses: {
+          "200": jsonResponse("Review candidate with page evidence.", ref("OcrReview")),
+          "401": jsonResponse("Missing or invalid lifecycle admin token.", ref("Error")),
+          "404": jsonResponse("OCR is disabled or the candidate does not exist.", ref("Error")),
+          "409": jsonResponse("The version is not awaiting review.", ref("Error")),
+          "503": serverError, "500": serverError
+        }
+      }
+    },
+    "/ingestions/{versionId}/approve": {
+      post: {
+        tags: ["OCR Review"], summary: "Correct and approve an OCR candidate", security: [{ bearerAuth: [] }],
+        parameters: [{ name: "versionId", in: "path", required: true, schema: { type: "string", format: "uuid" } }],
+        requestBody: { required: true, content: jsonContent(ref("OcrApprovalRequest")) },
+        responses: {
+          "200": jsonResponse("Candidate indexed and settled according to activation intent.", ref("OcrDecisionResponse")),
+          "401": jsonResponse("Missing or invalid lifecycle admin token.", ref("Error")),
+          "404": jsonResponse("OCR is disabled or the candidate does not exist.", ref("Error")),
+          "409": jsonResponse("Candidate, correction, state, or active-version precondition conflict.", ref("Error")),
+          "503": serverError, "500": serverError
+        }
+      }
+    },
+    "/ingestions/{versionId}/reject": {
+      post: {
+        tags: ["OCR Review"], summary: "Reject an OCR candidate", security: [{ bearerAuth: [] }],
+        parameters: [{ name: "versionId", in: "path", required: true, schema: { type: "string", format: "uuid" } }],
+        requestBody: { required: true, content: jsonContent(ref("OcrRejectionRequest")) },
+        responses: {
+          "200": jsonResponse("Candidate rejected without indexing or activation.", ref("OcrDecisionResponse")),
+          "400": jsonResponse("Required rejection fields are missing.", ref("Error")),
+          "401": jsonResponse("Missing or invalid lifecycle admin token.", ref("Error")),
+          "404": jsonResponse("OCR is disabled or the candidate does not exist.", ref("Error")),
+          "409": jsonResponse("Candidate hash or review state conflict.", ref("Error")),
+          "503": serverError, "500": serverError
+        }
+      }
+    },
     "/cleanup": {
       post: {
         tags: ["Ingestion"],
@@ -402,7 +457,8 @@ export const openApiDocument = {
         required: ["ok", "error"],
         properties: {
           ok: { type: "boolean", const: false },
-          error: { type: "string" }
+          error: { type: "string" },
+          code: { type: "string" }
         }
       },
       Scope: {
@@ -490,6 +546,77 @@ export const openApiDocument = {
           }
         ]
       },
+      OcrPhase: {
+        type: "string",
+        enum: ["native_extracting", "ocr_queued", "ocr_running", "review_required", "indexing", "ready", "active", "failed", "rejected"]
+      },
+      OcrAccepted: {
+        type: "object",
+        required: ["accepted", "sourceId", "versionId", "versionNumber", "state", "phase", "statusUrl", "reviewUrl", "activated"],
+        properties: {
+          accepted: { type: "boolean", const: true }, sourceId: { type: "string" }, versionId: { type: "string", format: "uuid" },
+          versionNumber: { type: "integer" }, state: { type: "string", const: "indexing" }, phase: { type: "string", const: "ocr_queued" },
+          statusUrl: { type: "string" }, reviewUrl: { type: "null" }, activated: { type: "boolean", const: false }
+        }
+      },
+      OcrUploadAccepted: {
+        allOf: [ref("OcrAccepted"), { type: "object", required: ["uploadedResource"], properties: { uploadedResource: { type: "string" } } }]
+      },
+      IngestionStatus: {
+        type: "object",
+        required: ["sourceId", "versionId", "state", "phase", "activated", "documents", "error", "statusUrl", "reviewUrl"],
+        properties: {
+          sourceId: { type: "string" }, versionId: { type: "string", format: "uuid" }, state: ref("SourceVersionState"), phase: ref("OcrPhase"), activated: { type: "boolean" },
+          documents: { type: "array", items: ref("OcrProgressDocument") },
+          error: { oneOf: [ref("OcrStatusError"), { type: "null" }] }, statusUrl: { type: "string" }, reviewUrl: { type: ["string", "null"] }
+        }
+      },
+      OcrProgressDocument: {
+        type: "object", required: ["documentId", "state", "completedPages", "totalPages", "pages"],
+        properties: {
+          documentId: { type: "string" }, state: { type: "string", enum: ["native_complete", "ocr_queued", "ocr_running", "ocr_complete", "failed"] },
+          completedPages: { type: "integer" }, totalPages: { type: "integer" }, pages: { type: "array", items: ref("OcrProgressPage") }
+        }
+      },
+      OcrProgressPage: {
+        type: "object", required: ["page", "method", "state"],
+        properties: { page: { type: "integer" }, method: { type: "string", enum: ["native", "ocr", "blank"] }, state: { type: "string", enum: ["pending", "native_complete", "ocr_queued", "ocr_running", "ocr_complete", "blank", "failed"] }, errorCode: { type: "string" } }
+      },
+      OcrStatusError: { type: "object", required: ["code", "message", "retryable"], properties: { code: { type: "string" }, message: { type: "string" }, retryable: { type: "boolean" } } },
+      OcrLine: {
+        type: "object", required: ["lineId", "text", "confidence", "bbox", "lineSha256"],
+        properties: { lineId: { type: "string" }, text: { type: "string" }, confidence: { type: "number" }, bbox: { type: "array", items: { type: "number" }, minItems: 4, maxItems: 4 }, lineSha256: { type: "string", pattern: "^[a-f0-9]{64}$" } }
+      },
+      OcrReview: {
+        type: "object",
+        required: ["versionId", "sourceId", "state", "candidateSha256", "baseActiveVersionId", "currentActiveVersionId", "activateRequested", "processingFingerprint", "metadataHash", "documents"],
+        properties: {
+          versionId: { type: "string", format: "uuid" }, sourceId: { type: "string" }, state: { type: "string", const: "review_required" }, candidateSha256: { type: "string", pattern: "^[a-f0-9]{64}$" },
+          baseActiveVersionId: { type: ["string", "null"], format: "uuid" }, currentActiveVersionId: { type: ["string", "null"], format: "uuid" }, activateRequested: { type: "boolean" }, processingFingerprint: { type: "string" }, metadataHash: { type: "string" },
+          documents: { type: "array", items: ref("OcrReviewDocument") }
+        }
+      },
+      OcrReviewDocument: { type: "object", required: ["documentId", "pages"], properties: { documentId: { type: "string" }, pages: { type: "array", items: ref("OcrReviewPage") } } },
+      OcrReviewPage: {
+        type: "object", required: ["page", "imageUrl", "nativeText", "ocr", "candidateText", "differences", "risks"],
+        properties: { page: { type: "integer" }, imageUrl: { type: "string" }, nativeText: { type: "string" }, ocr: { type: "object", required: ["text", "lines"], properties: { text: { type: "string" }, lines: { type: "array", items: ref("OcrLine") } } }, candidateText: { type: "string" }, differences: { type: "array", items: { type: "string" } }, risks: { type: "array", items: { type: "string" } } }
+      },
+      OcrCorrection: {
+        type: "object", required: ["documentId", "page", "lineId", "expectedLineSha256", "replacementText"],
+        properties: { documentId: { type: "string" }, page: { type: "integer" }, lineId: { type: "string" }, expectedLineSha256: { type: "string", pattern: "^[a-f0-9]{64}$" }, replacementText: { type: "string" } }
+      },
+      OcrApprovalRequest: {
+        type: "object", required: ["candidateSha256", "expectedActiveVersionId", "reviewedBy", "corrections"],
+        properties: { candidateSha256: { type: "string", pattern: "^[a-f0-9]{64}$" }, expectedActiveVersionId: { type: ["string", "null"], format: "uuid" }, reviewedBy: { type: "string" }, corrections: { type: "array", items: ref("OcrCorrection") } }
+      },
+      OcrRejectionRequest: {
+        type: "object", required: ["candidateSha256", "reviewedBy", "reason"],
+        properties: { candidateSha256: { type: "string", pattern: "^[a-f0-9]{64}$" }, reviewedBy: { type: "string" }, reason: { type: "string" } }
+      },
+      OcrDecisionResponse: {
+        type: "object", required: ["versionId", "state", "activated"],
+        properties: { versionId: { type: "string", format: "uuid" }, state: { type: "string", enum: ["ready", "active", "rejected"] }, activated: { type: "boolean" }, activatedVersionId: { type: "string", format: "uuid" }, errorCode: { type: "string", enum: ["DUPLICATE_REUSABLE_VERSION"] } }
+      },
       CleanupRequest: {
         type: "object",
         required: ["scope"],
@@ -877,7 +1004,7 @@ export function buildApiHelp() {
       openapiPurpose: "Consult this contract for complete parameters, request bodies, responses, errors, and examples for every endpoint.",
       playground: "/playground"
     },
-    authentication: "None. The current API is publicly accessible; authentication is planned separately.",
+    authentication: "Bearer authentication is required for lifecycle administration and all OCR candidate routes; other routes remain public.",
     endpoints
   };
 }
diff --git a/src/app.ts b/src/app.ts
index aa2ca1e..bf71d9b 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -1,10 +1,10 @@
 import express from "express";
 import multer from "multer";
 import type { Request } from "express";
-import { writeFile, unlink, mkdtemp, rm } from "node:fs/promises";
+import { readFile, unlink, mkdtemp, rm } from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
-import { timingSafeEqual } from "node:crypto";
+import { randomUUID, timingSafeEqual } from "node:crypto";
 import { fileURLToPath } from "node:url";
 import AdmZip from "adm-zip";
 import { buildApiHelp, openApiDocument } from "./api/openapi.js";
@@ -20,28 +20,66 @@ import { QdrantVectorStoreClient } from "./modules/vectorstore/client.js";
 import { getCatalogPool } from "./modules/catalog/client.js";
 import { KnowledgeLifecycleReconciler } from "./modules/catalog/reconciler.js";
 import { CatalogError, CatalogRepository } from "./modules/catalog/repository.js";
+import { OcrClient } from "./modules/ocr/client.js";
+import { OcrDispatcher } from "./modules/ocr/dispatcher.js";
+import { resolveArtifactPath } from "./modules/ocr/artifacts.js";
+import type { OcrReviewService } from "./modules/ocr/review.js";
+import type { OcrIndexingService } from "./modules/ocr/indexing.js";
+import { OcrRetentionService } from "./modules/ocr/retention.js";
 import type { ChatMessage, ChunkMode, RetrieveIntent, RetrieveScope } from "./shared/types/rag.js";
+import { sha256Hex } from "./shared/utils/ids.js";
 
 type UploadRequest = Request & {
   file?: Express.Multer.File;
 };
 
-export function createApp() {
+interface AppOptions {
+  ingestService?: Pick<IngestService, "ingest" | "cleanup">;
+  catalog?: CatalogRepository;
+  ocrClient?: OcrClient;
+  reviewService?: Pick<OcrReviewService, "view" | "approve" | "reject">;
+  indexingService?: Pick<OcrIndexingService, "index">;
+  startReconciler?: boolean;
+}
+
+export function createApp(options: AppOptions = {}) {
   const __filename = fileURLToPath(import.meta.url);
   const __dirname = path.dirname(__filename);
   const publicDir = path.resolve(__dirname, "../public");
   const app = express();
-  const upload = multer({ storage: multer.memoryStorage() });
+  const upload = multer({
+    storage: multer.diskStorage({
+      destination: os.tmpdir(),
+      filename: (_request, file, callback) => callback(null, `${randomUUID()}${path.extname(file.originalname).toLowerCase()}`)
+    }),
+    limits: { fileSize: 50 * 1024 * 1024 }
+  });
   const embeddingProvider = new OpenRouterEmbeddingProvider();
   const vectorStore = new QdrantVectorStoreClient();
   const catalogPool = getCatalogPool();
-  const catalog = catalogPool ? new CatalogRepository(catalogPool) : undefined;
-  const reconciler = new KnowledgeLifecycleReconciler(catalog, vectorStore);
+  const catalog = Object.prototype.hasOwnProperty.call(options, "catalog")
+    ? options.catalog
+    : catalogPool ? new CatalogRepository(catalogPool) : undefined;
+  const ocr = { enabled: env.ocrIngestEnabled, artifactRoot: path.resolve(env.ocrArtifactRoot) };
+  const ocrClient = ocr.enabled ? options.ocrClient ?? new OcrClient({ baseUrl: env.ocrServiceUrl, token: env.ocrInternalToken }) : undefined;
+  const ocrDispatcher = catalog && ocrClient ? new OcrDispatcher(catalog, ocrClient, async (job) => {
+    const versionDirectory = path.join(ocr.artifactRoot, job.versionId);
+    const manifest = JSON.parse(await readFile(path.join(versionDirectory, "manifest.json"), "utf8")) as {
+      documents?: Array<{ documentId: string; originalPath: string; originalSha256: string }>;
+    };
+    const document = manifest.documents?.find(({ documentId }) => documentId === job.documentId);
+    if (!document) throw new Error("OCR artifact manifest does not contain the queued document");
+    const bytes = await readFile(resolveArtifactPath(versionDirectory, document.originalPath));
+    if (sha256Hex(bytes) !== document.originalSha256) throw new Error("OCR artifact integrity validation failed");
+    return { bytes, documentSha256: document.originalSha256 };
+  }) : undefined;
+  const retention = catalog ? new OcrRetentionService(catalog, ocr.artifactRoot) : undefined;
+  const reconciler = new KnowledgeLifecycleReconciler(catalog, vectorStore, ocrDispatcher, retention);
   const evaluationLogs = new EvaluationLogService(embeddingProvider);
-  const ingestService = new IngestService(embeddingProvider, vectorStore, catalog);
+  const ingestService = options.ingestService ?? new IngestService(embeddingProvider, vectorStore, catalog, ocr);
   const retrieveService = new RetrieveService(embeddingProvider, vectorStore, catalog);
   const answerService = new AnswerService(retrieveService);
-  reconciler.start();
+  if (options.startReconciler !== false) reconciler.start();
 
   function sendError(res: express.Response, error: unknown, fallback: string) {
     const upstreamUnavailable = error instanceof Error && /(ECONNREFUSED|ETIMEDOUT|timeout|connection|database|postgres|qdrant)/i.test(error.message);
@@ -54,6 +92,10 @@ export function createApp() {
     res.status(statusCode).json(body);
   }
 
+  function dispatchAcceptedOcr(result: Awaited<ReturnType<IngestService["ingest"]>>): void {
+    if ("phase" in result) void ocrDispatcher?.dispatchAvailable();
+  }
+
   function requireLifecycleAdmin(req: express.Request, res: express.Response): boolean {
     const header = req.header("authorization") ?? "";
     const token = header.startsWith("Bearer ") ? header.slice("Bearer ".length) : "";
@@ -71,6 +113,12 @@ export function createApp() {
     return true;
   }
 
+  function requireOcrEnabled(res: express.Response): boolean {
+    if (ocr.enabled) return true;
+    res.status(404).json({ ok: false, error: "Not found" });
+    return false;
+  }
+
   function requireCatalog(res: express.Response): CatalogRepository | undefined {
     if (!catalog) {
       res.status(503).json({ ok: false, error: "Knowledge catalog is not configured", code: "CATALOG_UNAVAILABLE" });
@@ -201,6 +249,66 @@ export function createApp() {
     }
   });
 
+  app.get("/ingestions/:versionId", async (req, res) => {
+    if (!requireOcrEnabled(res)) return;
+    if (!requireLifecycleAdmin(req, res)) return;
+    const repository = requireCatalog(res);
+    if (!repository) return;
+    try {
+      const status = await repository.getIngestionStatus(String(req.params.versionId));
+      if (!status) {
+        res.status(404).json({ ok: false, error: "Ingestion not found", code: "INGESTION_NOT_FOUND" });
+        return;
+      }
+      res.json(status);
+    } catch (error) {
+      sendError(res, error, "Unknown ingestion status error");
+    }
+  });
+
+  app.get("/ingestions/:versionId/review", async (req, res) => {
+    if (!requireOcrEnabled(res)) return;
+    if (!requireLifecycleAdmin(req, res)) return;
+    if (!options.reviewService) {
+      res.status(503).json({ ok: false, error: "OCR review service is not configured", code: "OCR_REVIEW_UNAVAILABLE" });
+      return;
+    }
+    try {
+      res.json(await options.reviewService.view(String(req.params.versionId)));
+    } catch (error) {
+      sendError(res, error, "Unknown OCR review error");
+    }
+  });
+
+  app.post("/ingestions/:versionId/approve", async (req, res) => {
+    if (!requireOcrEnabled(res)) return;
+    if (!requireLifecycleAdmin(req, res)) return;
+    if (!options.reviewService || !options.indexingService) {
+      res.status(503).json({ ok: false, error: "OCR approval service is not configured", code: "OCR_REVIEW_UNAVAILABLE" });
+      return;
+    }
+    try {
+      const approved = await options.reviewService.approve(String(req.params.versionId), req.body);
+      res.json(await options.indexingService.index(approved));
+    } catch (error) {
+      sendError(res, error, "Unknown OCR approval error");
+    }
+  });
+
+  app.post("/ingestions/:versionId/reject", async (req, res) => {
+    if (!requireOcrEnabled(res)) return;
+    if (!requireLifecycleAdmin(req, res)) return;
+    if (!options.reviewService) {
+      res.status(503).json({ ok: false, error: "OCR review service is not configured", code: "OCR_REVIEW_UNAVAILABLE" });
+      return;
+    }
+    try {
+      res.json(await options.reviewService.reject(String(req.params.versionId), req.body));
+    } catch (error) {
+      sendError(res, error, "Unknown OCR rejection error");
+    }
+  });
+
   app.get("/models/answer", async (_req, res) => {
     try {
       const models = await answerService.listAvailableAnswerModels();
@@ -226,7 +334,8 @@ export function createApp() {
   app.post("/ingest", async (req, res) => {
     try {
       const result = await ingestService.ingest(req.body);
-      res.status(env.knowledgeLifecycleEnforced ? 201 : 202).json(result);
+      dispatchAcceptedOcr(result);
+      res.status("phase" in result ? 202 : env.knowledgeLifecycleEnforced ? 201 : 202).json(result);
     } catch (error) {
       sendError(res, error, "Unknown ingest error");
     }
@@ -322,7 +431,8 @@ export function createApp() {
           activate: req.body.activate === undefined ? true : Boolean(req.body.activate),
           expectedActiveVersionId: req.body.expectedActiveVersionId === undefined ? null : req.body.expectedActiveVersionId
         });
-        res.status(201).json(result);
+        dispatchAcceptedOcr(result);
+        res.status("phase" in result ? 202 : 201).json(result);
         return;
       }
       res.status(202).json({
@@ -371,8 +481,7 @@ export function createApp() {
 
       const isZipFolder = req.body.isZipFolder === "true";
       const tempDirBase = await os.tmpdir();
-      tempFilePath = path.join(tempDirBase, `${Date.now()}-${req.file.originalname}`);
-      await writeFile(tempFilePath, req.file.buffer);
+      tempFilePath = req.file.path;
 
       const tags = typeof req.body.tags === "string"
         ? req.body.tags.split(",").map((entry: string) => entry.trim()).filter(Boolean)
@@ -408,7 +517,8 @@ export function createApp() {
         });
       }
 
-      res.status(env.knowledgeLifecycleEnforced ? 201 : 202).json({
+      dispatchAcceptedOcr(result);
+      res.status("phase" in result ? 202 : env.knowledgeLifecycleEnforced ? 201 : 202).json({
         ...result,
         uploadedResource: req.file.originalname
       });
diff --git a/src/config/env.ts b/src/config/env.ts
index 5cca087..b2d3beb 100644
--- a/src/config/env.ts
+++ b/src/config/env.ts
@@ -52,5 +52,13 @@ export const env = {
   knowledgeLifecycleEnforced: booleanEnv("KNOWLEDGE_LIFECYCLE_ENFORCED", false),
   ingestWritesEnabled: booleanEnv("INGEST_WRITES_ENABLED", true),
   lifecycleReconcileIntervalMs: Number(process.env.LIFECYCLE_RECONCILE_INTERVAL_MS ?? 300000),
-  lifecycleIndexingStaleTimeoutMs: Number(process.env.LIFECYCLE_INDEXING_STALE_TIMEOUT_MS ?? 1800000)
+  lifecycleIndexingStaleTimeoutMs: Number(process.env.LIFECYCLE_INDEXING_STALE_TIMEOUT_MS ?? 1800000),
+  ocrIngestEnabled: booleanEnv("OCR_INGEST_ENABLED", false),
+  ocrServiceUrl: process.env.OCR_SERVICE_URL ?? "http://ocr-service:8000",
+  ocrInternalToken: process.env.OCR_INTERNAL_TOKEN ?? "",
+  ocrArtifactRoot: process.env.OCR_ARTIFACT_ROOT ?? "/data/ingestions",
+  ocrMaxUploadBytes: Number(process.env.OCR_MAX_UPLOAD_BYTES ?? 50 * 1024 * 1024),
+  ocrMaxPages: Number(process.env.OCR_MAX_PAGES ?? 100),
+  ocrPageTimeoutMs: Number(process.env.OCR_PAGE_TIMEOUT_MS ?? 60_000),
+  ocrTotalTimeoutMs: Number(process.env.OCR_TOTAL_TIMEOUT_MS ?? 15 * 60_000)
 } as const;
diff --git a/src/modules/catalog/reconciler.ts b/src/modules/catalog/reconciler.ts
index 49e5883..4b6cc34 100644
--- a/src/modules/catalog/reconciler.ts
+++ b/src/modules/catalog/reconciler.ts
@@ -1,6 +1,8 @@
 import { env } from "../../config/env.js";
 import type { VectorStoreClient } from "../vectorstore/client.js";
 import type { CatalogRepository } from "./repository.js";
+import type { OcrDispatcher } from "../ocr/dispatcher.js";
+import type { OcrRetentionService } from "../ocr/retention.js";
 
 export interface ReconcilerStatus {
   ok: boolean;
@@ -9,6 +11,8 @@ export interface ReconcilerStatus {
   inconsistentSources: string[];
   orphanedVersionsRecovered?: number;
   orphanedVersionsFailed?: number;
+  ocrLeasesRecovered?: number;
+  ocrRetentionDeleted?: number;
   invariantViolations?: string[];
 }
 
@@ -18,7 +22,9 @@ export class KnowledgeLifecycleReconciler {
 
   constructor(
     private readonly catalog: CatalogRepository | undefined,
-    private readonly vectorStore: VectorStoreClient
+    private readonly vectorStore: VectorStoreClient,
+    private readonly ocrDispatcher?: Pick<OcrDispatcher, "recoverExpiredLeases" | "dispatchAvailable">,
+    private readonly ocrRetention?: Pick<OcrRetentionService, "runOnce">
   ) {}
 
   getStatus(): ReconcilerStatus {
@@ -49,6 +55,9 @@ export class KnowledgeLifecycleReconciler {
         const activeVersions = await catalog.resolveActiveVersions();
         const inconsistentSources: string[] = [];
         const invariantViolations = await catalog.validateActiveInvariant();
+        const ocrLeasesRecovered = await this.ocrDispatcher?.recoverExpiredLeases() ?? 0;
+        await this.ocrDispatcher?.dispatchAvailable();
+        const retention = await this.ocrRetention?.runOnce();
         const orphanRecovery = await this.recoverOrphanedVersions(catalog);
 
         for (const version of activeVersions) {
@@ -71,6 +80,8 @@ export class KnowledgeLifecycleReconciler {
           inconsistentSources,
           orphanedVersionsRecovered: orphanRecovery.ready,
           orphanedVersionsFailed: orphanRecovery.failed,
+          ocrLeasesRecovered,
+          ocrRetentionDeleted: (retention?.deleted ?? 0) + (retention?.resumed ?? 0),
           invariantViolations
         };
       });
diff --git a/src/modules/catalog/repository.ts b/src/modules/catalog/repository.ts
index 7653836..811ad46 100644
--- a/src/modules/catalog/repository.ts
+++ b/src/modules/catalog/repository.ts
@@ -1,7 +1,10 @@
 import type { AvailableScope, ChunkMode, IngestSourceInput, SourceType, SourceVersionState, RetrieveScope } from "../../shared/types/rag.js";
+import { sha256Hex } from "../../shared/utils/ids.js";
 import { withCatalogAdvisoryLock, withCatalogAdvisorySharedLocks, withCatalogTryAdvisoryLock, withTransaction, type PgPool, type PgPoolClient } from "./client.js";
 import { CatalogError } from "./errors.js";
 import { normalizeExpectedActiveVersion } from "./lifecycle.js";
+import type { OcrResult } from "../ocr/client.js";
+import type { OcrRetentionCandidate } from "../ocr/retention.js";
 
 export interface CatalogDocumentInput {
   documentId: string;
@@ -12,9 +15,26 @@ export interface CatalogDocumentInput {
   mimeType: string;
   title: string;
   chunkCount: number;
+  extractionMethod?: "native" | "ocr";
+  artifactManifestPath?: string;
+}
+
+export interface OcrPageInput {
+  documentId: string;
+  page: number;
+  extractionMethod: "native" | "ocr";
+  nativeTextHash: string;
+}
+
+export interface OcrJobInput {
+  documentId: string;
+  remoteIdempotencyKey: string;
+  requestedPages: number[];
+  configVersion: "ocr-v1";
 }
 
 export interface CreateVersionInput {
+  versionId?: string;
   sourceId: string;
   sourceType: SourceType;
   sourceRef: string;
@@ -31,6 +51,8 @@ export interface CreateVersionInput {
   expectedDocumentCount: number;
   expectedPointCount: number;
   documents: CatalogDocumentInput[];
+  ocrPages?: OcrPageInput[];
+  ocrJobs?: OcrJobInput[];
 }
 
 export interface CatalogVersionRow {
@@ -79,6 +101,7 @@ export interface PendingOcrIdentity {
 
 export interface OcrJobRow {
   jobId: string;
+  versionId: string;
   documentId: string;
   remoteJobId: string | null;
   remoteIdempotencyKey: string;
@@ -116,10 +139,12 @@ type VersionDbRow = {
   expected_point_count: string | number;
   verified_point_count: string | number;
   qdrant_collection: string;
+  artifact_state?: "none" | "present" | "retention_deleting" | "retention_deleted";
 };
 
 type OcrJobDbRow = {
   ocr_job_id: string;
+  ocr_version_id: string;
   ocr_document_id: string;
   ocr_remote_job_id: string | null;
   ocr_remote_idempotency_key: string;
@@ -136,7 +161,7 @@ type OcrJobDbRow = {
 };
 
 const OCR_JOB_COLUMNS = [
-  ["job_id", "ocr_job_id"], ["document_id", "ocr_document_id"],
+  ["job_id", "ocr_job_id"], ["version_id", "ocr_version_id"], ["document_id", "ocr_document_id"],
   ["remote_job_id", "ocr_remote_job_id"], ["remote_idempotency_key", "ocr_remote_idempotency_key"],
   ["state", "ocr_state"], ["requested_pages", "ocr_requested_pages"],
   ["completed_pages", "ocr_completed_pages"], ["config_version", "ocr_config_version"],
@@ -173,6 +198,7 @@ function toVersion(row: VersionDbRow): CatalogVersionRow {
 function toOcrJob(row: OcrJobDbRow): OcrJobRow {
   return {
     jobId: row.ocr_job_id,
+    versionId: row.ocr_version_id,
     documentId: row.ocr_document_id,
     remoteJobId: row.ocr_remote_job_id,
     remoteIdempotencyKey: row.ocr_remote_idempotency_key,
@@ -189,6 +215,14 @@ function toOcrJob(row: OcrJobDbRow): OcrJobRow {
   };
 }
 
+function ingestionPhase(state: SourceVersionState, jobs: Array<OcrJobRow["state"] | null>): string {
+  if (state !== "indexing") return state;
+  if (jobs.some((job) => job === "failed")) return "failed";
+  if (jobs.some((job) => job === "running")) return "ocr_running";
+  if (jobs.some((job) => job === "queued")) return "ocr_queued";
+  return "indexing";
+}
+
 export class CatalogRepository {
   constructor(private readonly pool: PgPool) {}
 
@@ -338,6 +372,19 @@ export class CatalogRepository {
     });
   }
 
+  async claimOcrJob(jobId: string, leaseMs: number): Promise<OcrJobRow | undefined> {
+    const result = await this.pool.query<OcrJobDbRow>(
+      `UPDATE rag_ocr_jobs
+       SET state = 'running', attempt_count = attempt_count + 1,
+           started_at = COALESCE(started_at, now()), heartbeat_at = now(),
+           lease_expires_at = now() + ($2::text || ' milliseconds')::interval
+       WHERE job_id = $1 AND state = 'queued' AND (next_attempt_at IS NULL OR next_attempt_at <= now())
+       RETURNING ${ocrJobColumns()}`,
+      [jobId, String(leaseMs)]
+    );
+    return result.rows[0] ? toOcrJob(result.rows[0]) : undefined;
+  }
+
   async recoverExpiredOcrLeases(): Promise<OcrJobRow[]> {
     const result = await this.pool.query<OcrJobDbRow>(
       `UPDATE rag_ocr_jobs
@@ -348,6 +395,142 @@ export class CatalogRepository {
     return result.rows.map(toOcrJob);
   }
 
+  async setOcrRemoteJob(jobId: string, remoteJobId: string, leaseMs: number): Promise<void> {
+    const result = await this.pool.query(
+      `UPDATE rag_ocr_jobs SET remote_job_id = $2, heartbeat_at = now(),
+         lease_expires_at = now() + ($3::text || ' milliseconds')::interval
+       WHERE job_id = $1 AND state = 'running'`,
+      [jobId, remoteJobId, String(leaseMs)]
+    );
+    if (result.rowCount !== 1) throw new CatalogError("OCR job lease was lost", 409, "OCR_LEASE_LOST");
+  }
+
+  async requeueOcrJob(jobId: string, code: string, detail: string, delayMs: number): Promise<void> {
+    await this.pool.query(
+      `UPDATE rag_ocr_jobs SET state = 'queued', heartbeat_at = NULL, lease_expires_at = NULL,
+         next_attempt_at = now() + ($4::text || ' milliseconds')::interval, error_code = $2, error_detail = $3
+       WHERE job_id = $1 AND state = 'running'`,
+      [jobId, code, detail.slice(0, 2000), String(delayMs)]
+    );
+  }
+
+  async completeOcrJob(jobId: string, result: OcrResult): Promise<boolean> {
+    return withTransaction(this.pool, async (client) => {
+      const identity = await client.query<{ version_id: string; document_id: string }>(
+        "SELECT version_id, document_id FROM rag_ocr_jobs WHERE job_id = $1 AND state = 'running' FOR UPDATE",
+        [jobId]
+      );
+      if (!identity.rowCount) throw new CatalogError("OCR job lease was lost", 409, "OCR_LEASE_LOST");
+      const { version_id: versionId, document_id: documentId } = identity.rows[0];
+      for (const page of result.pages) {
+        await client.query(
+          `UPDATE rag_document_pages SET ocr_text_hash = $4, candidate_text_hash = $4, metrics = $5
+           WHERE version_id = $1 AND document_id = $2 AND page_number = $3 AND extraction_method = 'ocr'`,
+          [versionId, documentId, page.page, sha256Hex(page.text), page.metrics]
+        );
+      }
+      await client.query(
+        `UPDATE rag_ocr_jobs SET state = 'succeeded', completed_pages = cardinality(requested_pages),
+           heartbeat_at = now(), lease_expires_at = NULL, next_attempt_at = NULL,
+           error_code = NULL, error_detail = NULL, completed_at = now()
+         WHERE job_id = $1`,
+        [jobId]
+      );
+      const pending = await client.query(
+        "SELECT 1 FROM rag_ocr_jobs WHERE version_id = $1 AND state <> 'succeeded' LIMIT 1",
+        [versionId]
+      );
+      return pending.rowCount === 0;
+    });
+  }
+
+  async failOcrJob(jobId: string, code: string, detail: string): Promise<void> {
+    await this.pool.query(
+      `UPDATE rag_ocr_jobs SET state = 'failed', lease_expires_at = NULL, next_attempt_at = NULL,
+         error_code = $2, error_detail = $3, completed_at = now() WHERE job_id = $1 AND state = 'running'`,
+      [jobId, code, detail.slice(0, 2000)]
+    );
+  }
+
+  async getIngestionStatus(versionId: string): Promise<Record<string, unknown> | undefined> {
+    const version = await this.pool.query<{
+      source_id: string;
+      state: SourceVersionState;
+      error_code: string | null;
+      error_detail: string | null;
+    }>("SELECT source_id, state, error_code, error_detail FROM rag_source_versions WHERE version_id = $1", [versionId]);
+    if (!version.rowCount) return undefined;
+    const documents = await this.pool.query<{
+      document_id: string;
+      index_state: "pending" | "indexing" | "ready" | "failed";
+      job_state: OcrJobRow["state"] | null;
+      completed_pages: string | number | null;
+      requested_pages: number[] | null;
+    }>(
+      `SELECT d.document_id, d.index_state, j.state AS job_state, j.completed_pages, j.requested_pages
+       FROM rag_version_documents d LEFT JOIN rag_ocr_jobs j
+         ON j.version_id = d.version_id AND j.document_id = d.document_id
+       WHERE d.version_id = $1 ORDER BY d.document_id`,
+      [versionId]
+    );
+    const pages = await this.pool.query<{
+      document_id: string;
+      page_number: string | number;
+      extraction_method: "native" | "ocr" | "blank";
+      blocked_reason: string | null;
+    }>(
+      "SELECT document_id, page_number, extraction_method, blocked_reason FROM rag_document_pages WHERE version_id = $1 ORDER BY document_id, page_number",
+      [versionId]
+    );
+    const row = version.rows[0];
+    const phase = ingestionPhase(row.state, documents.rows.map(({ job_state }) => job_state));
+    return {
+      sourceId: row.source_id,
+      versionId,
+      state: row.state,
+      phase,
+      activated: row.state === "active",
+      documents: documents.rows.map((document) => {
+        const documentPages = pages.rows.filter((page) => page.document_id === document.document_id);
+        const state = document.job_state === "failed" || document.index_state === "failed"
+          ? "failed"
+          : document.job_state === "succeeded"
+            ? "ocr_complete"
+            : document.job_state === "running"
+              ? "ocr_running"
+              : document.job_state === "queued"
+                ? "ocr_queued"
+                : "native_complete";
+        return {
+          documentId: document.document_id,
+          state,
+          completedPages: documentPages.filter((page) => page.extraction_method !== "ocr" && !page.blocked_reason).length
+            + Number(document.completed_pages ?? 0),
+          totalPages: documentPages.length,
+          pages: documentPages.map((page) => ({
+            page: Number(page.page_number),
+            method: page.extraction_method,
+            state: page.blocked_reason
+              ? "failed"
+              : page.extraction_method === "native"
+                ? "native_complete"
+                : page.extraction_method === "blank"
+                  ? "blank"
+                  : document.job_state === "succeeded"
+                    ? "ocr_complete"
+                    : document.job_state === "running"
+                      ? "ocr_running"
+                      : "ocr_queued",
+            ...(page.blocked_reason ? { errorCode: page.blocked_reason } : {})
+          }))
+        };
+      }),
+      error: row.error_code ? { code: row.error_code, message: row.error_detail ?? row.error_code, retryable: false } : null,
+      statusUrl: `/ingestions/${versionId}`,
+      reviewUrl: row.state === "review_required" ? `/ingestions/${versionId}/review` : null
+    };
+  }
+
   async markReviewRequired(versionId: string): Promise<void> {
     const result = await this.pool.query(
       `UPDATE rag_source_versions SET state = 'review_required'
@@ -379,7 +562,8 @@ export class CatalogRepository {
   async rejectOcrVersion(versionId: string, reviewedBy: string, reason: string): Promise<void> {
     const result = await this.pool.query(
       `UPDATE rag_source_versions
-       SET state = 'rejected', reviewed_at = now(), reviewed_by = $2, error_code = 'OCR_REJECTED', error_detail = $3
+       SET state = 'rejected', reviewed_at = now(), reviewed_by = $2, error_code = 'OCR_REJECTED', error_detail = $3,
+           retention_due_at = now() + interval '7 days'
        WHERE version_id = $1 AND state = 'review_required'`,
       [versionId, reviewedBy, reason.slice(0, 2000)]
     );
@@ -414,17 +598,19 @@ export class CatalogRepository {
         [input.sourceId]
       );
       const versionNumber = Number(versionNumberResult.rows[0].next_version_number);
-      const versionResult = await client.query<VersionDbRow>(
-        `INSERT INTO rag_source_versions(
-          source_id, version_number, previous_version_id, state, original_manifest_hash,
-          source_content_hash, processing_fingerprint, metadata_hash, tags, activate_requested,
-          base_active_version_id, embedding_provider, embedding_model, embedding_dimensions,
-          qdrant_collection, expected_document_count, expected_point_count
-        ) VALUES ($1, $2, $3, 'pending', $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16)
-        RETURNING *`,
-        [
-          input.sourceId,
-          versionNumber,
+       const versionResult = await client.query<VersionDbRow>(
+         `INSERT INTO rag_source_versions(
+          version_id, source_id, version_number, previous_version_id, state, original_manifest_hash,
+           source_content_hash, processing_fingerprint, metadata_hash, tags, activate_requested,
+           base_active_version_id, embedding_provider, embedding_model, embedding_dimensions,
+            qdrant_collection, expected_document_count, expected_point_count, artifact_state
+         ) VALUES (COALESCE($1::uuid, gen_random_uuid()), $2, $3, $4, 'pending', $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17,
+           CASE WHEN $6::char(64) IS NULL THEN 'present' ELSE 'none' END)
+         RETURNING *`,
+         [
+          input.versionId ?? null,
+           input.sourceId,
+           versionNumber,
           baseActiveVersionId,
           input.originalManifestHash,
           input.sourceContentHash,
@@ -436,34 +622,51 @@ export class CatalogRepository {
           input.embeddingProvider,
           input.embeddingModel,
           input.embeddingDimensions,
-          input.qdrantCollection,
-          input.expectedDocumentCount,
-          input.expectedPointCount
+           input.qdrantCollection,
+           input.expectedDocumentCount,
+           input.expectedPointCount
         ]
       );
 
       const version = toVersion(versionResult.rows[0]);
       for (const document of input.documents) {
-        await client.query(
-          `INSERT INTO rag_version_documents(
-            version_id, document_id, document_key, original_hash, original_hash_kind,
-            content_hash, mime_type, title, index_state, chunk_count
-          ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, 'pending', $9)`,
-          [
+         await client.query(
+           `INSERT INTO rag_version_documents(
+             version_id, document_id, document_key, original_hash, original_hash_kind,
+            content_hash, mime_type, title, extraction_method, index_state, chunk_count, artifact_manifest_path
+          ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, 'pending', $10, $11)`,
+           [
             version.versionId,
             document.documentId,
             document.documentKey,
             document.originalHash,
             document.originalHashKind,
             document.contentHash,
-            document.mimeType,
-            document.title,
-            document.chunkCount
-          ]
+             document.mimeType,
+             document.title,
+            document.extractionMethod ?? "native",
+            document.chunkCount,
+            document.artifactManifestPath ?? null
+           ]
+         );
+       }
+
+      for (const page of input.ocrPages ?? []) {
+        await client.query(
+          `INSERT INTO rag_document_pages(version_id, document_id, page_number, extraction_method, native_text_hash)
+           VALUES ($1, $2, $3, $4, $5)`,
+          [version.versionId, page.documentId, page.page, page.extractionMethod, page.nativeTextHash]
+        );
+      }
+      for (const job of input.ocrJobs ?? []) {
+        await client.query(
+          `INSERT INTO rag_ocr_jobs(version_id, document_id, remote_idempotency_key, state, requested_pages, config_version)
+           VALUES ($1, $2, $3, 'queued', $4, $5)`,
+          [version.versionId, job.documentId, job.remoteIdempotencyKey, job.requestedPages, job.configVersion]
         );
       }
 
-      return version;
+       return version;
     });
   }
 
@@ -501,7 +704,7 @@ export class CatalogRepository {
     }
     const result = await this.pool.query(
       `UPDATE rag_source_versions
-       SET state = 'failed', error_code = $2, error_detail = $3
+       SET state = 'failed', error_code = $2, error_detail = $3, retention_due_at = now() + interval '7 days'
        WHERE version_id = $1 AND state IN ('pending', 'indexing')`,
       [versionId, code, detail.slice(0, 2000)]
     );
@@ -538,6 +741,9 @@ export class CatalogRepository {
       if (!["ready", "superseded", "active"].includes(version.rows[0].state)) {
         throw new CatalogError("Only ready or superseded versions can be activated", 409, "VERSION_NOT_ACTIVATABLE");
       }
+      if (["retention_deleting", "retention_deleted"].includes(version.rows[0].artifact_state ?? "none")) {
+        throw new CatalogError("Version artifacts are unavailable", 409, "VERSION_ARTIFACTS_UNAVAILABLE");
+      }
       if (version.rows[0].state === "active") {
         if (currentActive !== versionId) {
           throw new CatalogError("Active version invariant is inconsistent", 503, "ACTIVE_VERSION_INVARIANT_FAILED");
@@ -547,7 +753,7 @@ export class CatalogRepository {
 
       if (currentActive) {
         await client.query(
-          "UPDATE rag_source_versions SET state = 'superseded', superseded_at = now() WHERE source_id = $1 AND version_id = $2",
+          "UPDATE rag_source_versions SET state = 'superseded', superseded_at = now(), retention_due_at = now() + interval '30 days' WHERE source_id = $1 AND version_id = $2",
           [sourceId, currentActive]
         );
       }
@@ -663,6 +869,50 @@ export class CatalogRepository {
     await this.pool.query("UPDATE rag_sources SET needs_reingest = true WHERE source_id = $1", [sourceId]);
   }
 
+  async listOcrRetentionCandidates(now: Date): Promise<OcrRetentionCandidate[]> {
+    const result = await this.pool.query<{ version_id: string; source_id: string; state: SourceVersionState; artifact_state: OcrRetentionCandidate["artifactState"] }>(
+      `SELECT v.version_id, v.source_id, v.state, v.artifact_state FROM rag_source_versions v
+       JOIN rag_sources s ON s.source_id = v.source_id
+       WHERE v.artifact_state IN ('present', 'retention_deleting')
+         AND s.active_version_id IS DISTINCT FROM v.version_id
+         AND (v.artifact_state = 'retention_deleting'
+           OR (v.state = 'review_required' AND v.created_at + interval '30 days' <= $1)
+           OR (v.state IN ('failed', 'rejected') AND COALESCE(v.retention_due_at, v.reviewed_at + interval '7 days', v.created_at + interval '7 days') <= $1)
+           OR (v.state = 'superseded' AND COALESCE(v.retention_due_at, v.superseded_at + interval '30 days') <= $1))
+       ORDER BY v.created_at, v.version_id`, [now]
+    );
+    return result.rows.map((row) => ({ versionId: row.version_id, sourceId: row.source_id, state: row.state, artifactState: row.artifact_state }));
+  }
+
+  async expireOcrReview(sourceId: string, versionId: string, now: Date): Promise<boolean> {
+    const result = await this.pool.query(
+      `UPDATE rag_source_versions v SET state = 'rejected', reviewed_at = $3, error_code = 'REVIEW_EXPIRED',
+         error_detail = 'OCR review expired after 30 days', retention_due_at = $3 + interval '7 days'
+       FROM rag_sources s WHERE v.source_id = $1 AND v.version_id = $2 AND v.source_id = s.source_id
+         AND v.state = 'review_required' AND v.created_at + interval '30 days' <= $3
+         AND s.active_version_id IS DISTINCT FROM v.version_id`, [sourceId, versionId, now]
+    );
+    return result.rowCount === 1;
+  }
+
+  async claimOcrRetentionDeletion(sourceId: string, versionId: string, state: SourceVersionState, artifactState: OcrRetentionCandidate["artifactState"]): Promise<boolean> {
+    const result = await this.pool.query(
+      `UPDATE rag_source_versions v SET artifact_state = 'retention_deleting' FROM rag_sources s
+       WHERE v.source_id = $1 AND v.version_id = $2 AND v.state = $3 AND v.artifact_state = $4
+         AND v.source_id = s.source_id AND s.active_version_id IS DISTINCT FROM v.version_id`, [sourceId, versionId, state, artifactState]
+    );
+    return result.rowCount === 1;
+  }
+
+  async completeOcrRetentionDeletion(sourceId: string, versionId: string, state: SourceVersionState): Promise<boolean> {
+    const result = await this.pool.query(
+      `UPDATE rag_source_versions v SET artifact_state = 'retention_deleted' FROM rag_sources s
+       WHERE v.source_id = $1 AND v.version_id = $2 AND v.state = $3 AND v.artifact_state = 'retention_deleting'
+         AND v.source_id = s.source_id AND s.active_version_id IS DISTINCT FROM v.version_id`, [sourceId, versionId, state]
+    );
+    return result.rowCount === 1;
+  }
+
   async rollback(sourceId: string, targetVersionId: string, expectedActiveVersionId: string): Promise<CatalogVersionRow> {
     return this.withSourceLock(sourceId, async () => this.withVersionExclusiveLock(targetVersionId, async () => {
       const version = await this.activateVersion(sourceId, targetVersionId, expectedActiveVersionId);
diff --git a/src/modules/ingest/service.ts b/src/modules/ingest/service.ts
index cd0ce6d..9ff965a 100644
--- a/src/modules/ingest/service.ts
+++ b/src/modules/ingest/service.ts
@@ -1,6 +1,7 @@
 import path from "node:path";
 import { readFile } from "node:fs/promises";
-import { parseDocument, isSupportedDocument } from "../parsers/parser-registry.js";
+import { randomUUID } from "node:crypto";
+import { parseDocument, isSupportedDocument, parsePdfPages, type ParsedPdfPage } from "../parsers/parser-registry.js";
 import { chunkDocument, codeChunkingPolicy, documentalChunkingPolicy } from "../process/chunking.js";
 import type { EmbeddingProvider } from "../embeddings/provider.js";
 import type { VectorStoreClient } from "../vectorstore/client.js";
@@ -21,6 +22,8 @@ import {
 import { listFilesRecursively } from "../../shared/utils/files.js";
 import { env } from "../../config/env.js";
 import { CatalogError, type CatalogDocumentInput, type CatalogRepository } from "../catalog/repository.js";
+import { selectPdfPagesForOcr } from "../ocr/detection.js";
+import { stageOcrArtifacts } from "../ocr/artifacts.js";
 
 type PreparedDocument = CatalogDocumentInput & {
   chunks: ReturnType<typeof chunkDocument>;
@@ -36,11 +39,38 @@ type OriginalDocument = {
   originalHash: string;
 };
 
+interface OcrPlan {
+  original: OriginalDocument;
+  pages: ParsedPdfPage[];
+  requestedPages: number[];
+  contentHash: string;
+  mimeType: string;
+  title: string;
+}
+
+export interface OcrAccepted {
+  accepted: true;
+  sourceId: string;
+  versionId: string;
+  versionNumber: number;
+  state: "indexing";
+  phase: "ocr_queued";
+  statusUrl: string;
+  reviewUrl: null;
+  activated: false;
+}
+
+interface OcrIngestOptions {
+  enabled: boolean;
+  artifactRoot: string;
+}
+
 export class IngestService {
   constructor(
     private readonly embeddingProvider: EmbeddingProvider,
     private readonly vectorStore: VectorStoreClient,
-    private readonly catalog?: CatalogRepository
+    private readonly catalog?: CatalogRepository,
+    private readonly ocr?: OcrIngestOptions
   ) {}
 
   async cleanup(scope: RetrieveScope): Promise<{ deleted: number }> {
@@ -51,7 +81,7 @@ export class IngestService {
     return { deleted: count };
   }
 
-  async ingest(source: IngestSourceInput): Promise<IngestResult> {
+  async ingest(source: IngestSourceInput): Promise<IngestResult | OcrAccepted> {
     if (!env.ingestWritesEnabled) {
       throw new CatalogError("Ingest writes are disabled during knowledge catalog maintenance", 503, "INGEST_WRITES_DISABLED");
     }
@@ -135,7 +165,7 @@ export class IngestService {
     };
   }
 
-  private async ingestWithLifecycle(source: IngestSourceInput, catalog: CatalogRepository): Promise<IngestResult> {
+  private async ingestWithLifecycle(source: IngestSourceInput, catalog: CatalogRepository): Promise<IngestResult | OcrAccepted> {
     const activate = source.activate ?? true;
     if (activate && source.expectedActiveVersionId === undefined) {
       throw new CatalogError("expectedActiveVersionId is required when activate is true", 400, "EXPECTED_ACTIVE_VERSION_REQUIRED");
@@ -158,16 +188,24 @@ export class IngestService {
       if (!originalManifestHash) {
         throw new CatalogError("Original manifest hash could not be calculated", 422, "ORIGINAL_MANIFEST_HASH_UNAVAILABLE");
       }
+      const tags = source.tags ?? [];
+      const embeddingDimensions = this.embeddingProvider.dimensions ?? 4096;
+      const metadataHash = buildMetadataHash(tags, { sourceType: source.sourceType, sourceRef: source.sourceRef });
+      if (this.ocr?.enabled) {
+        const plans = await this.planOcr(originalDocuments);
+        if (plans.some(({ requestedPages }) => requestedPages.length > 0)) {
+          return await this.acceptOcr(source, sourceId, attemptId, originalManifestHash, plans, tags, metadataHash, embeddingDimensions, catalog);
+        }
+      }
+
       const preparedDocuments = await this.prepareDocuments(originalDocuments);
 
       if (preparedDocuments.length === 0) {
         throw new CatalogError("The source has no supported documents with useful content", 422, "EMPTY_SOURCE");
       }
 
-      const tags = source.tags ?? [];
       const sourceContentHash = hashOrderedPairs(preparedDocuments.map((document) => [document.documentKey, document.contentHash]));
 
-      const embeddingDimensions = this.embeddingProvider.dimensions ?? 4096;
       const processingFingerprint = buildProcessingFingerprint({
         parserVersion: "native-v1",
         normalizationPolicy: "bom-crlf-trim-final-lf-v1",
@@ -179,8 +217,6 @@ export class IngestService {
         embeddingModel: this.embeddingProvider.modelName,
         embeddingDimensions
       });
-      const metadataHash = buildMetadataHash(tags, { sourceType: source.sourceType, sourceRef: source.sourceRef });
-
       return await catalog.withSourceLock(sourceId, async () => {
         const reusable = await catalog.findReusableVersion({ sourceId, sourceContentHash, processingFingerprint, metadataHash });
         if (reusable?.state === "active") {
@@ -311,6 +347,146 @@ export class IngestService {
     }
   }
 
+  private async planOcr(originals: OriginalDocument[]): Promise<OcrPlan[]> {
+    const plans: OcrPlan[] = [];
+    for (const original of originals) {
+      if (path.extname(original.filePath).toLowerCase() === ".pdf") {
+        const pages = await parsePdfPages(original.filePath);
+        plans.push({
+          original,
+          pages,
+          requestedPages: selectPdfPagesForOcr(original.filePath, pages),
+          contentHash: sha256Hex(normalizeContentForHash(pages.map(({ text }) => text).join("\n"))),
+          mimeType: "application/pdf",
+          title: path.basename(original.filePath)
+        });
+        continue;
+      }
+      const parsed = await parseDocument(original.filePath);
+      plans.push({
+        original,
+        pages: [],
+        requestedPages: [],
+        contentHash: sha256Hex(normalizeContentForHash(parsed.content)),
+        mimeType: parsed.mimeType,
+        title: parsed.title
+      });
+    }
+    return plans;
+  }
+
+  private async acceptOcr(
+    source: IngestSourceInput,
+    sourceId: string,
+    attemptId: string,
+    originalManifestHash: string,
+    plans: OcrPlan[],
+    tags: string[],
+    metadataHash: string,
+    embeddingDimensions: number,
+    catalog: CatalogRepository
+  ): Promise<OcrAccepted> {
+    const processingFingerprint = buildProcessingFingerprint({
+      parserVersion: "native-pages-v1+ocr-v1",
+      detectionPolicyVersion: "pdf-detection-v1",
+      normalizationPolicy: "bom-crlf-trim-final-lf-v1",
+      chunking: { code: codeChunkingPolicy, documental: documentalChunkingPolicy },
+      embeddingProvider: this.embeddingProvider.providerName,
+      embeddingModel: this.embeddingProvider.modelName,
+      embeddingDimensions
+    });
+    return catalog.withSourceLock(sourceId, async () => {
+      const pending = await catalog.findPendingOcrVersion({ sourceId, originalManifestHash, processingFingerprint, metadataHash });
+      if (pending) {
+        await catalog.updateAttempt(attemptId, { state: "completed", versionId: pending.version.versionId, inputHash: originalManifestHash });
+        return this.ocrAccepted(sourceId, pending.version.versionId, pending.version.versionNumber);
+      }
+
+      const versionId = randomUUID();
+      const staged = await stageOcrArtifacts({
+        rootDirectory: this.ocr!.artifactRoot,
+        versionId,
+        createdAt: new Date().toISOString(),
+        documents: plans.map(({ original }) => ({
+          documentId: original.documentId,
+          documentKey: original.documentKey,
+          bytes: original.bytes
+        }))
+      });
+      if (staged.originalManifestHash !== originalManifestHash) {
+        throw new CatalogError("Durable OCR manifest does not match the source", 500, "OCR_ARTIFACT_INTEGRITY_FAILED");
+      }
+      let created;
+      try {
+        created = await catalog.createPendingVersion({
+          versionId,
+          sourceId,
+          sourceType: source.sourceType,
+          sourceRef: source.sourceRef,
+          originalManifestHash,
+          sourceContentHash: null,
+          processingFingerprint,
+          metadataHash,
+          tags,
+          activateRequested: source.activate ?? true,
+          embeddingProvider: this.embeddingProvider.providerName,
+          embeddingModel: this.embeddingProvider.modelName,
+          embeddingDimensions,
+          qdrantCollection: env.qdrantCollection,
+          expectedDocumentCount: plans.length,
+          expectedPointCount: 0,
+          documents: plans.map(({ original, requestedPages, contentHash, mimeType, title }) => ({
+            documentId: original.documentId,
+            documentKey: original.documentKey,
+            originalHash: original.originalHash,
+            originalHashKind: "bytes",
+            contentHash: requestedPages.length > 0 ? null : contentHash,
+            mimeType,
+            title,
+            chunkCount: 0,
+            extractionMethod: requestedPages.length > 0 ? "ocr" : "native",
+            artifactManifestPath: staged.manifestPath
+          })),
+          ocrPages: plans.flatMap(({ original, pages, requestedPages }) => pages.map((page) => ({
+            documentId: original.documentId,
+            page: page.page,
+            extractionMethod: requestedPages.includes(page.page) ? "ocr" as const : "native" as const,
+            nativeTextHash: page.textSha256
+          }))),
+          ocrJobs: plans.filter(({ requestedPages }) => requestedPages.length > 0).map(({ original, requestedPages }) => ({
+            documentId: original.documentId,
+            remoteIdempotencyKey: `${original.originalHash}:ocr-v1:${sha256Hex(JSON.stringify(requestedPages))}`,
+            requestedPages,
+            configVersion: "ocr-v1"
+          }))
+        });
+      } catch (error) {
+        if ((error as { code?: unknown }).code !== "23505") throw error;
+        const winner = await catalog.findPendingOcrVersion({ sourceId, originalManifestHash, processingFingerprint, metadataHash });
+        if (!winner) throw error;
+        await catalog.updateAttempt(attemptId, { state: "completed", versionId: winner.version.versionId, inputHash: originalManifestHash });
+        return this.ocrAccepted(sourceId, winner.version.versionId, winner.version.versionNumber);
+      }
+      await catalog.markIndexing(created.versionId);
+      await catalog.updateAttempt(attemptId, { state: "completed", versionId: created.versionId, inputHash: originalManifestHash });
+      return this.ocrAccepted(sourceId, created.versionId, created.versionNumber);
+    });
+  }
+
+  private ocrAccepted(sourceId: string, versionId: string, versionNumber: number): OcrAccepted {
+    return {
+      accepted: true,
+      sourceId,
+      versionId,
+      versionNumber,
+      state: "indexing",
+      phase: "ocr_queued",
+      statusUrl: `/ingestions/${versionId}`,
+      reviewUrl: null,
+      activated: false
+    };
+  }
+
   private async readOriginalDocuments(source: IngestSourceInput, sourceId: string, files: string[]): Promise<OriginalDocument[]> {
     const originals: OriginalDocument[] = [];
     for (const filePath of files) {
diff --git a/src/modules/ocr/client.ts b/src/modules/ocr/client.ts
index dc4ec86..b63c93d 100644
--- a/src/modules/ocr/client.ts
+++ b/src/modules/ocr/client.ts
@@ -69,11 +69,12 @@ export class OcrClient {
     this.sleep = options.sleep ?? ((milliseconds) => new Promise((resolve) => setTimeout(resolve, milliseconds)));
   }
 
-  async submit(file: Buffer, expected: { documentSha256: string; pages: number[] }): Promise<OcrAck> {
+  async submit(file: Buffer, expected: { documentSha256: string; pages: number[] }, persistedIdempotencyKey?: string): Promise<OcrAck> {
     assertExpected(expected);
     if (sha256Hex(file) !== expected.documentSha256) throw integrityError();
     const payload = { documentSha256: expected.documentSha256, pages: expected.pages, ...OCR_CONFIG };
-    const idempotencyKey = `${expected.documentSha256}:ocr-v1:${sha256Hex(JSON.stringify(expected.pages))}`;
+    const idempotencyKey = persistedIdempotencyKey ?? `${expected.documentSha256}:ocr-v1:${sha256Hex(JSON.stringify(expected.pages))}`;
+    if (!idempotencyKey.trim() || /[\r\n]/u.test(idempotencyKey)) throw new TypeError("OCR idempotency key is invalid");
     const value = await this.requestJson("/v1/jobs", () => {
       const form = new FormData();
       form.set("file", new Blob([new Uint8Array(file)], { type: "application/pdf" }), "original.pdf");
diff --git a/src/modules/ocr/dispatcher.ts b/src/modules/ocr/dispatcher.ts
new file mode 100644
index 0000000..01fe743
--- /dev/null
+++ b/src/modules/ocr/dispatcher.ts
@@ -0,0 +1,108 @@
+import type { OcrJobRow } from "../catalog/repository.js";
+import { OcrClientError, type OcrClient, type OcrResult } from "./client.js";
+
+export interface OcrDispatchStore {
+  claimNextOcrJob(leaseMs: number): Promise<OcrJobRow | undefined>;
+  claimOcrJob(jobId: string, leaseMs: number): Promise<OcrJobRow | undefined>;
+  recoverExpiredOcrLeases(): Promise<OcrJobRow[]>;
+  setOcrRemoteJob(jobId: string, remoteJobId: string, leaseMs: number): Promise<void>;
+  requeueOcrJob(jobId: string, code: string, detail: string, delayMs: number): Promise<void>;
+  completeOcrJob(jobId: string, result: OcrResult): Promise<boolean>;
+  failOcrJob(jobId: string, code: string, detail: string): Promise<void>;
+  markReviewRequired(versionId: string): Promise<void>;
+  markFailed(versionId: string, code: string, detail: string): Promise<void>;
+}
+
+export type OcrDispatchInput = { bytes: Buffer; documentSha256: string };
+export type OcrDispatchResult = "idle" | "pending" | "succeeded" | "failed";
+
+export class OcrDispatcher {
+  private activeDrain: Promise<number> | undefined;
+
+  constructor(
+    private readonly store: OcrDispatchStore,
+    private readonly client: OcrClient,
+    private readonly loadInput: (job: OcrJobRow) => Promise<OcrDispatchInput>,
+    private readonly leaseMs = 30_000
+  ) {}
+
+  async runOnce(): Promise<OcrDispatchResult> {
+    const job = await this.store.claimNextOcrJob(this.leaseMs);
+    if (!job) return "idle";
+
+    return this.dispatch(job);
+  }
+
+  private async dispatch(job: OcrJobRow): Promise<OcrDispatchResult> {
+    try {
+      const input = await this.loadInput(job);
+      let remoteJobId = job.remoteJobId;
+      if (!remoteJobId) {
+        const acknowledgement = await this.client.submit(input.bytes, {
+          documentSha256: input.documentSha256,
+          pages: job.requestedPages
+        }, job.remoteIdempotencyKey);
+        remoteJobId = acknowledgement.jobId;
+        await this.store.setOcrRemoteJob(job.jobId, remoteJobId, this.leaseMs);
+      }
+
+      const status = await this.client.getStatus(remoteJobId);
+      if (status.status === "queued" || status.status === "running") {
+        const delayMs = Math.min(2_000 * 2 ** Math.max(0, job.attemptCount - 1), 15_000);
+        await this.store.requeueOcrJob(job.jobId, "OCR_PENDING", status.status, delayMs);
+        return "pending";
+      }
+      if (status.status === "failed") {
+        const code = status.error?.code ?? "OCR_REMOTE_FAILED";
+        await this.fail(job, code, status.error?.message ?? "OCR processing failed");
+        return "failed";
+      }
+
+      const result = await this.client.getResult(remoteJobId, {
+        documentSha256: input.documentSha256,
+        pages: job.requestedPages
+      });
+      const versionComplete = await this.store.completeOcrJob(job.jobId, result);
+      if (versionComplete) await this.store.markReviewRequired(job.versionId);
+      return "succeeded";
+    } catch (error) {
+      const detail = error instanceof Error ? error.message : "Unknown OCR dispatch failure";
+      if (error instanceof OcrClientError && error.retryable) {
+        await this.store.requeueOcrJob(job.jobId, error.code, detail, 15_000);
+        return "pending";
+      }
+      const code = error instanceof OcrClientError ? error.code : "OCR_DISPATCH_FAILED";
+      await this.fail(job, code, detail);
+      return "failed";
+    }
+  }
+
+  async recoverExpiredLeases(): Promise<number> {
+    const recovered = await this.store.recoverExpiredOcrLeases();
+    for (const job of recovered) {
+      const claimed = await this.store.claimOcrJob(job.jobId, this.leaseMs);
+      if (claimed) await this.dispatch(claimed);
+    }
+    return recovered.length;
+  }
+
+  dispatchAvailable(): Promise<number> {
+    if (this.activeDrain) return this.activeDrain;
+    const drain = this.drainAvailable();
+    this.activeDrain = drain;
+    const clear = () => { if (this.activeDrain === drain) this.activeDrain = undefined; };
+    void drain.then(clear, clear);
+    return drain;
+  }
+
+  private async drainAvailable(): Promise<number> {
+    let processed = 0;
+    while (await this.runOnce() !== "idle") processed += 1;
+    return processed;
+  }
+
+  private async fail(job: OcrJobRow, code: string, detail: string): Promise<void> {
+    await this.store.failOcrJob(job.jobId, code, detail);
+    await this.store.markFailed(job.versionId, code, detail);
+  }
+}
diff --git a/src/modules/ocr/indexing.ts b/src/modules/ocr/indexing.ts
new file mode 100644
index 0000000..234c36c
--- /dev/null
+++ b/src/modules/ocr/indexing.ts
@@ -0,0 +1,67 @@
+import { CatalogError } from "../catalog/errors.js";
+
+export interface ApprovedOcrCandidate {
+  versionId: string;
+  sourceId: string;
+  state: "indexing" | "rejected";
+  activateRequested: boolean;
+  expectedActiveVersionId: string | null;
+  reviewedText: string;
+  reviewedTextSha256: string;
+  processingFingerprint: string;
+  metadataHash: string;
+}
+
+export interface OcrIndexingStore {
+  findReusableVersion(candidate: ApprovedOcrCandidate): Promise<{ versionId: string } | undefined>;
+  indexReviewed(candidate: ApprovedOcrCandidate): Promise<number>;
+  markReady(versionId: string, verifiedPointCount: number): Promise<void>;
+  settleReusable(candidate: ApprovedOcrCandidate, reusableVersionId: string, activate: boolean): Promise<boolean>;
+  activateVersion(sourceId: string, versionId: string, expectedActiveVersionId: string | null): Promise<string>;
+}
+
+export type OcrIndexingResult = {
+  versionId: string;
+  state: "ready" | "active" | "rejected";
+  activated: boolean;
+  activatedVersionId?: string;
+  errorCode?: "DUPLICATE_REUSABLE_VERSION";
+};
+
+function activeRace(error: unknown): never {
+  if (error instanceof CatalogError && error.statusCode === 409) {
+    throw new CatalogError("Active version changed during OCR approval", 409, "ACTIVE_VERSION_CHANGED");
+  }
+  throw error;
+}
+
+export class OcrIndexingService {
+  constructor(private readonly store: OcrIndexingStore) {}
+
+  async index(candidate: ApprovedOcrCandidate): Promise<OcrIndexingResult> {
+    if (candidate.state !== "indexing") throw new CatalogError("Only approved OCR candidates can be indexed", 409, "INVALID_VERSION_STATE");
+    const reusable = await this.store.findReusableVersion(candidate);
+    if (reusable) {
+      let activated: boolean;
+      try {
+        activated = await this.store.settleReusable(candidate, reusable.versionId, candidate.activateRequested);
+      } catch (error) {
+        return activeRace(error);
+      }
+      return {
+        versionId: candidate.versionId, state: "rejected", activated,
+        ...(activated ? { activatedVersionId: reusable.versionId } : {}), errorCode: "DUPLICATE_REUSABLE_VERSION"
+      };
+    }
+
+    const verifiedPointCount = await this.store.indexReviewed(candidate);
+    await this.store.markReady(candidate.versionId, verifiedPointCount);
+    if (!candidate.activateRequested) return { versionId: candidate.versionId, state: "ready", activated: false };
+    try {
+      const activatedVersionId = await this.store.activateVersion(candidate.sourceId, candidate.versionId, candidate.expectedActiveVersionId);
+      return { versionId: candidate.versionId, state: "active", activated: true, activatedVersionId };
+    } catch (error) {
+      return activeRace(error);
+    }
+  }
+}
diff --git a/src/modules/ocr/retention.ts b/src/modules/ocr/retention.ts
new file mode 100644
index 0000000..d97527c
--- /dev/null
+++ b/src/modules/ocr/retention.ts
@@ -0,0 +1,45 @@
+import { rm } from "node:fs/promises";
+import type { SourceVersionState } from "../../shared/types/rag.js";
+import { resolveArtifactPath } from "./artifacts.js";
+
+export interface OcrRetentionCandidate {
+  versionId: string;
+  sourceId: string;
+  state: SourceVersionState;
+  artifactState: "present" | "retention_deleting";
+}
+
+export interface OcrRetentionStore {
+  listOcrRetentionCandidates(now: Date): Promise<OcrRetentionCandidate[]>;
+  withVersionTryLock<T>(versionId: string, handler: () => Promise<T>): Promise<T | undefined>;
+  expireOcrReview(sourceId: string, versionId: string, now: Date): Promise<boolean>;
+  claimOcrRetentionDeletion(sourceId: string, versionId: string, state: SourceVersionState, artifactState: OcrRetentionCandidate["artifactState"]): Promise<boolean>;
+  completeOcrRetentionDeletion(sourceId: string, versionId: string, state: SourceVersionState): Promise<boolean>;
+}
+
+export class OcrRetentionService {
+  constructor(private readonly store: OcrRetentionStore, private readonly artifactRoot: string) {}
+
+  async runOnce(now = new Date()): Promise<{ expired: number; deleted: number; resumed: number; skipped: number }> {
+    const result = { expired: 0, deleted: 0, resumed: 0, skipped: 0 };
+    for (const candidate of await this.store.listOcrRetentionCandidates(now)) {
+      if (candidate.state === "active") {
+        result.skipped += 1;
+        continue;
+      }
+      const outcome = await this.store.withVersionTryLock(candidate.versionId, async () => {
+        if (candidate.state === "review_required") {
+          return await this.store.expireOcrReview(candidate.sourceId, candidate.versionId, now) ? "expired" : "skipped";
+        }
+        const claimed = await this.store.claimOcrRetentionDeletion(candidate.sourceId, candidate.versionId, candidate.state, candidate.artifactState);
+        if (!claimed) return "skipped";
+        await rm(resolveArtifactPath(this.artifactRoot, candidate.versionId), { recursive: true, force: true });
+        return await this.store.completeOcrRetentionDeletion(candidate.sourceId, candidate.versionId, candidate.state)
+          ? candidate.artifactState === "retention_deleting" ? "resumed" : "deleted"
+          : "skipped";
+      });
+      result[outcome ?? "skipped"] += 1;
+    }
+    return result;
+  }
+}
diff --git a/src/modules/ocr/review.ts b/src/modules/ocr/review.ts
new file mode 100644
index 0000000..05a5c9f
--- /dev/null
+++ b/src/modules/ocr/review.ts
@@ -0,0 +1,143 @@
+import { CatalogError } from "../catalog/errors.js";
+import { sha256Hex } from "../../shared/utils/ids.js";
+
+export interface OcrReviewLine {
+  lineId: string;
+  text: string;
+  confidence: number;
+  bbox: [number, number, number, number];
+  lineSha256: string;
+}
+
+export interface OcrReviewCandidate {
+  versionId: string;
+  sourceId: string;
+  state: "review_required" | "indexing" | "rejected";
+  candidateSha256: string;
+  baseActiveVersionId: string | null;
+  currentActiveVersionId: string | null;
+  activateRequested: boolean;
+  processingFingerprint: string;
+  metadataHash: string;
+  documents: Array<{ documentId: string; pages: Array<{
+    page: number;
+    imageUrl: string;
+    nativeText: string;
+    ocr: { text: string; lines: OcrReviewLine[] };
+    candidateText: string;
+    differences: string[];
+    risks: string[];
+  }> }>;
+}
+
+export interface OcrCorrection {
+  documentId: string;
+  page: number;
+  lineId: string;
+  expectedLineSha256: string;
+  replacementText: string;
+}
+
+export interface OcrReviewStore {
+  loadCandidate(versionId: string): Promise<OcrReviewCandidate | undefined>;
+  commitApproval(input: {
+    candidate: OcrReviewCandidate;
+    candidateSha256: string;
+    expectedActiveVersionId: string | null;
+    reviewedBy: string;
+    corrections: OcrCorrection[];
+    reviewedText: string;
+    reviewedTextSha256: string;
+  }): Promise<void>;
+  commitRejection(input: {
+    candidate: OcrReviewCandidate;
+    candidateSha256: string;
+    reviewedBy: string;
+    reason: string;
+  }): Promise<void>;
+}
+
+export interface ApprovedOcrReview {
+  versionId: string;
+  sourceId: string;
+  state: "indexing";
+  activateRequested: boolean;
+  expectedActiveVersionId: string | null;
+  reviewedText: string;
+  reviewedTextSha256: string;
+  processingFingerprint: string;
+  metadataHash: string;
+}
+
+function conflict(message: string, code = "REVIEW_CONFLICT"): CatalogError {
+  return new CatalogError(message, 409, code);
+}
+
+export class OcrReviewService {
+  constructor(private readonly store: OcrReviewStore) {}
+
+  async view(versionId: string): Promise<OcrReviewCandidate> {
+    const candidate = await this.store.loadCandidate(versionId);
+    if (!candidate) throw new CatalogError("OCR review candidate not found", 404, "REVIEW_NOT_FOUND");
+    if (candidate.state !== "review_required") throw conflict("Version is not awaiting OCR review", "INVALID_VERSION_STATE");
+    return candidate;
+  }
+
+  async approve(versionId: string, input: {
+    candidateSha256: string;
+    expectedActiveVersionId: string | null;
+    reviewedBy: string;
+    corrections: OcrCorrection[];
+  }): Promise<ApprovedOcrReview> {
+    const candidate = await this.view(versionId);
+    if (input.candidateSha256 !== candidate.candidateSha256) throw conflict("Candidate hash is stale");
+    if (input.expectedActiveVersionId !== candidate.baseActiveVersionId || input.expectedActiveVersionId !== candidate.currentActiveVersionId) {
+      throw conflict("Active version changed during review", "ACTIVE_VERSION_CHANGED");
+    }
+
+    const reviewedCandidate = structuredClone(candidate);
+    const lines = new Map<string, OcrReviewLine>();
+    for (const document of reviewedCandidate.documents) for (const page of document.pages) for (const line of page.ocr.lines) {
+      const key = `${document.documentId}:${page.page}:${line.lineId}`;
+      if (lines.has(key)) throw conflict("Candidate line identities are duplicated", "CORRECTION_CONFLICT");
+      lines.set(key, line);
+    }
+    const targets = new Set<string>();
+    for (const correction of input.corrections) {
+      const key = `${correction.documentId}:${correction.page}:${correction.lineId}`;
+      const line = lines.get(key);
+      if (targets.has(key) || !line || line.lineSha256 !== correction.expectedLineSha256) {
+        throw conflict("Correction target is stale or duplicated", "CORRECTION_CONFLICT");
+      }
+      targets.add(key);
+      line.text = correction.replacementText;
+      line.lineSha256 = sha256Hex(line.text);
+    }
+    for (const document of reviewedCandidate.documents) for (const page of document.pages) {
+      if (page.ocr.lines.length > 0) page.ocr.text = page.candidateText = page.ocr.lines.map(({ text }) => text).join("\n");
+    }
+    const reviewedText = reviewedCandidate.documents.flatMap(({ pages }) => pages.filter(({ candidateText }) => candidateText).map(({ candidateText }) => candidateText)).join("\n\n");
+    const reviewedTextSha256 = sha256Hex(reviewedText);
+    await this.store.commitApproval({ candidate: reviewedCandidate, ...input, reviewedText, reviewedTextSha256 });
+    return {
+      versionId, sourceId: candidate.sourceId, state: "indexing", activateRequested: candidate.activateRequested,
+      expectedActiveVersionId: input.expectedActiveVersionId, reviewedText, reviewedTextSha256,
+      processingFingerprint: candidate.processingFingerprint, metadataHash: candidate.metadataHash
+    };
+  }
+
+  async reject(versionId: string, input: { candidateSha256: string; reviewedBy: string; reason: string }): Promise<{
+    versionId: string; state: "rejected"; activated: false;
+  }> {
+    if (!input || typeof input.candidateSha256 !== "string" || typeof input.reviewedBy !== "string" || typeof input.reason !== "string") {
+      throw new CatalogError("Candidate hash, reviewer, and rejection reason are required", 400, "INVALID_REJECTION");
+    }
+    const reviewedBy = input.reviewedBy?.trim();
+    const reason = input.reason?.trim();
+    if (!input.candidateSha256 || !reviewedBy || !reason) throw new CatalogError("Candidate hash, reviewer, and rejection reason are required", 400, "INVALID_REJECTION");
+    const candidate = await this.view(versionId);
+    if (input.candidateSha256 !== candidate.candidateSha256) throw conflict("Candidate hash is stale");
+    await this.store.commitRejection({ candidate, candidateSha256: input.candidateSha256, reviewedBy, reason });
+    return { versionId, state: "rejected", activated: false };
+  }
+}
diff --git a/tests/ocr/contracts-deploy.test.ts b/tests/ocr/contracts-deploy.test.ts
new file mode 100644
index 0000000..e735184
--- /dev/null
+++ b/tests/ocr/contracts-deploy.test.ts
@@ -0,0 +1,71 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import { readFile } from "node:fs/promises";
+import { buildApiHelp, openApiDocument } from "../../src/api/openapi.js";
+import { env } from "../../src/config/env.js";
+
+const api = openApiDocument as unknown as {
+  paths: Record<string, Record<string, Record<string, unknown>>>;
+  components: { schemas: Record<string, Record<string, unknown>> };
+};
+
+test("OpenAPI describes authenticated OCR ingestion, status, review, approval, and rejection", () => {
+  const ingestResponses = api.paths["/ingest"]!.post!.responses as Record<string, { content?: Record<string, { schema?: unknown }> }>;
+  const uploadResponses = api.paths["/ingest/upload"]!.post!.responses as typeof ingestResponses;
+  assert.deepEqual(ingestResponses["202"]!.content!["application/json"]!.schema, { oneOf: [{ $ref: "#/components/schemas/OcrAccepted" }, { $ref: "#/components/schemas/IngestResponse" }] });
+  assert.deepEqual(uploadResponses["202"]!.content!["application/json"]!.schema, { oneOf: [{ $ref: "#/components/schemas/OcrUploadAccepted" }, { $ref: "#/components/schemas/UploadIngestResponse" }] });
+
+  for (const [path, method] of [
+    ["/ingestions/{versionId}", "get"],
+    ["/ingestions/{versionId}/review", "get"],
+    ["/ingestions/{versionId}/approve", "post"],
+    ["/ingestions/{versionId}/reject", "post"]
+  ]) {
+    const operation = api.paths[path]![method]!;
+    assert.deepEqual(operation.security, [{ bearerAuth: [] }], `${method.toUpperCase()} ${path} must require bearer auth`);
+    const responses = operation.responses as Record<string, unknown>;
+    assert.ok("200" in responses && "401" in responses && "404" in responses && "503" in responses);
+  }
+
+  const approve = api.paths["/ingestions/{versionId}/approve"]!.post!;
+  const reject = api.paths["/ingestions/{versionId}/reject"]!.post!;
+  assert.ok("409" in (approve.responses as Record<string, unknown>));
+  assert.ok("400" in (reject.responses as Record<string, unknown>));
+  assert.ok("409" in (reject.responses as Record<string, unknown>));
+  assert.deepEqual((approve.requestBody as { content: Record<string, { schema: unknown }> }).content["application/json"]!.schema,
+    { $ref: "#/components/schemas/OcrApprovalRequest" });
+  assert.deepEqual((reject.requestBody as { content: Record<string, { schema: unknown }> }).content["application/json"]!.schema,
+    { $ref: "#/components/schemas/OcrRejectionRequest" });
+  assert.match(buildApiHelp().authentication, /Bearer.*OCR/u);
+});
+
+test("OpenAPI OCR schemas preserve progress, review evidence, corrections, and decision states", () => {
+  const schemas = api.components.schemas;
+  assert.deepEqual(schemas.OcrPhase!.enum, ["native_extracting", "ocr_queued", "ocr_running", "review_required", "indexing", "ready", "active", "failed", "rejected"]);
+  assert.deepEqual(schemas.OcrAccepted!.required, ["accepted", "sourceId", "versionId", "versionNumber", "state", "phase", "statusUrl", "reviewUrl", "activated"]);
+  assert.deepEqual(schemas.IngestionStatus!.required, ["sourceId", "versionId", "state", "phase", "activated", "documents", "error", "statusUrl", "reviewUrl"]);
+  assert.deepEqual(schemas.OcrReview!.required, ["versionId", "sourceId", "state", "candidateSha256", "baseActiveVersionId", "currentActiveVersionId", "activateRequested", "processingFingerprint", "metadataHash", "documents"]);
+  const approvalProperties = schemas.OcrApprovalRequest!.properties as Record<string, { items?: unknown }>;
+  assert.deepEqual(approvalProperties.corrections!.items, { $ref: "#/components/schemas/OcrCorrection" });
+  assert.deepEqual(schemas.OcrDecisionResponse!.properties, {
+    versionId: { type: "string", format: "uuid" }, state: { type: "string", enum: ["ready", "active", "rejected"] }, activated: { type: "boolean" },
+    activatedVersionId: { type: "string", format: "uuid" }, errorCode: { type: "string", enum: ["DUPLICATE_REUSABLE_VERSION"] }
+  });
+});
+
+test("OCR deployment defaults and container wiring match the private durable contract", async () => {
+  assert.deepEqual({
+    root: env.ocrArtifactRoot,
+    uploadBytes: (env as unknown as Record<string, unknown>).ocrMaxUploadBytes,
+    pages: (env as unknown as Record<string, unknown>).ocrMaxPages,
+    pageTimeoutMs: (env as unknown as Record<string, unknown>).ocrPageTimeoutMs,
+    totalTimeoutMs: (env as unknown as Record<string, unknown>).ocrTotalTimeoutMs
+  }, { root: "/data/ingestions", uploadBytes: 50 * 1024 * 1024, pages: 100, pageTimeoutMs: 60_000, totalTimeoutMs: 15 * 60_000 });
+
+  const dockerfile = await readFile(new URL("../../Dockerfile", import.meta.url), "utf8");
+  assert.match(dockerfile, /VOLUME \["\/data\/ingestions"\]/u);
+  assert.match(dockerfile, /ENV NODE_ENV=production OCR_ARTIFACT_ROOT=\/data\/ingestions/u);
+  assert.match(dockerfile, /USER node/u);
+  assert.match(dockerfile, /dist\/modules\/catalog\/migrations\.js.*dist\/server\.js/u);
+  assert.doesNotMatch(dockerfile, /(?:COPY|ADD)\s+\.env|ENV\s+(?:OCR_INTERNAL_TOKEN|LIFECYCLE_ADMIN_TOKEN)=/u);
+});
diff --git a/tests/ocr/dispatcher.test.ts b/tests/ocr/dispatcher.test.ts
new file mode 100644
index 0000000..2ce6a54
--- /dev/null
+++ b/tests/ocr/dispatcher.test.ts
@@ -0,0 +1,397 @@
+import assert from "node:assert/strict";
+import { mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import test from "node:test";
+import { createApp } from "../../src/app.js";
+import { env } from "../../src/config/env.js";
+import { CatalogError } from "../../src/modules/catalog/errors.js";
+import { CatalogRepository } from "../../src/modules/catalog/repository.js";
+import { KnowledgeLifecycleReconciler } from "../../src/modules/catalog/reconciler.js";
+import { OcrDispatcher } from "../../src/modules/ocr/dispatcher.js";
+import { IngestService } from "../../src/modules/ingest/service.js";
+import type { EmbeddingProvider } from "../../src/modules/embeddings/provider.js";
+import type { VectorStoreClient } from "../../src/modules/vectorstore/client.js";
+import { sha256Hex } from "../../src/shared/utils/ids.js";
+
+function setEnvFlag(name: keyof typeof env, value: unknown): void {
+  (env as unknown as Record<string, unknown>)[name] = value;
+}
+
+function buildPdf(text: string): Buffer {
+  const stream = text ? `BT /F1 10 Tf 40 760 Td (${text.replace(/([\\()])/g, "\\$1")}) Tj ET` : "";
+  const objects = [
+    "<< /Type /Catalog /Pages 2 0 R >>",
+    "<< /Type /Pages /Kids [3 0 R] /Count 1 >>",
+    "<< /Type /Page /Parent 2 0 R /MediaBox [0 0 612 792] /Resources << /Font << /F1 5 0 R >> >> /Contents 4 0 R >>",
+    `<< /Length ${Buffer.byteLength(stream)} >>\nstream\n${stream}\nendstream`,
+    "<< /Type /Font /Subtype /Type1 /BaseFont /Helvetica >>"
+  ];
+  let pdf = "%PDF-1.4\n";
+  const offsets = [0];
+  objects.forEach((object, index) => {
+    offsets.push(Buffer.byteLength(pdf));
+    pdf += `${index + 1} 0 obj\n${object}\nendobj\n`;
+  });
+  const xref = Buffer.byteLength(pdf);
+  pdf += `xref\n0 ${objects.length + 1}\n0000000000 65535 f \n`;
+  pdf += offsets.slice(1).map((offset) => `${String(offset).padStart(10, "0")} 00000 n \n`).join("");
+  pdf += `trailer\n<< /Size ${objects.length + 1} /Root 1 0 R >>\nstartxref\n${xref}\n%%EOF\n`;
+  return Buffer.from(pdf);
+}
+
+function embeddingProvider(): EmbeddingProvider {
+  return {
+    providerName: "test-provider",
+    modelName: "test-model",
+    dimensions: 3,
+    async embed(input) { return input.map(() => [0.1, 0.2, 0.3]); }
+  };
+}
+
+function vectorStore(): VectorStoreClient {
+  return {
+    kind: "fake",
+    async upsert() {},
+    async countVersionPoints() { return 0; }
+  } as VectorStoreClient;
+}
+
+test("OCR-disabled textual PDFs retain the native synchronous path", async (context) => {
+  const previousLifecycle = env.knowledgeLifecycleEnforced;
+  setEnvFlag("knowledgeLifecycleEnforced", true);
+  context.after(() => setEnvFlag("knowledgeLifecycleEnforced", previousLifecycle));
+  const directory = await mkdtemp(path.join(os.tmpdir(), "rag-ocr-disabled-"));
+  context.after(() => rm(directory, { recursive: true, force: true }));
+  const filePath = path.join(directory, "native.pdf");
+  const sufficient = Array.from({ length: 24 }, (_, index) => `Alpha${index} beta${index}`).join(" ");
+  await writeFile(filePath, buildPdf(sufficient));
+  const calls: string[] = [];
+  const catalog = {
+    async beginAttempt() { return "attempt-1"; },
+    async updateAttempt() {},
+    async withSourceLock(_sourceId: string, handler: () => Promise<unknown>) { return handler(); },
+    async findReusableVersion() { return { versionId: "native-1", versionNumber: 1, state: "active", previousVersionId: null, expectedDocumentCount: 1 }; },
+    async assertActiveVersionPrecondition() { calls.push("native"); }
+  };
+  const service = new IngestService(embeddingProvider(), vectorStore(), catalog as never, {
+    enabled: false,
+    artifactRoot: directory
+  });
+
+  const result = await service.ingest({ sourceType: "file", sourceRef: "native.pdf", readPath: filePath, activate: true, expectedActiveVersionId: null });
+
+  assert.equal(result.state, "active");
+  assert.equal("phase" in result, false);
+  assert.deepEqual(calls, ["native"]);
+});
+
+test("OCR-required PDFs are durably accepted once and duplicate pending ingestion reuses status identity", async (context) => {
+  const previousLifecycle = env.knowledgeLifecycleEnforced;
+  setEnvFlag("knowledgeLifecycleEnforced", true);
+  context.after(() => setEnvFlag("knowledgeLifecycleEnforced", previousLifecycle));
+  const directory = await mkdtemp(path.join(os.tmpdir(), "rag-ocr-accept-"));
+  context.after(() => rm(directory, { recursive: true, force: true }));
+  const filePath = path.join(directory, "scanned.pdf");
+  await writeFile(filePath, buildPdf(""));
+  let createdInput: Record<string, unknown> | undefined;
+  let pending: Record<string, unknown> | undefined;
+  const catalog = {
+    async beginAttempt() { return "attempt-1"; },
+    async updateAttempt() {},
+    async withSourceLock(_sourceId: string, handler: () => Promise<unknown>) { return handler(); },
+    async findPendingOcrVersion() { return pending; },
+    async createPendingVersion(input: Record<string, unknown>) {
+      createdInput = input;
+      pending = { version: { versionId: input.versionId, versionNumber: 4, state: "indexing" }, jobs: [{ jobId: "job-1" }] };
+      return (pending as { version: unknown }).version;
+    },
+    async markIndexing() {}
+  };
+  const service = new IngestService(embeddingProvider(), vectorStore(), catalog as never, {
+    enabled: true,
+    artifactRoot: path.join(directory, "artifacts")
+  });
+  const source = { sourceId: "src:scan", sourceType: "file" as const, sourceRef: "scanned.pdf", readPath: filePath, activate: true, expectedActiveVersionId: null };
+
+  const accepted = await service.ingest(source);
+  const duplicate = await service.ingest(source);
+
+  assert.deepEqual(accepted, {
+    accepted: true,
+    sourceId: "src:scan",
+    versionId: accepted.versionId,
+    versionNumber: 4,
+    state: "indexing",
+    phase: "ocr_queued",
+    statusUrl: `/ingestions/${accepted.versionId}`,
+    reviewUrl: null,
+    activated: false
+  });
+  assert.equal(duplicate.versionId, accepted.versionId);
+  assert.equal((createdInput?.sourceContentHash), null);
+  assert.deepEqual((createdInput?.ocrJobs as Array<{ requestedPages: number[] }>)[0]?.requestedPages, [1]);
+  const originalPath = path.join(directory, "artifacts", String(accepted.versionId), "documents");
+  assert.equal((await readFile(path.join(directory, "artifacts", String(accepted.versionId), "manifest.json"), "utf8")).includes("scanned.pdf"), true);
+  assert.equal(path.isAbsolute(originalPath), true);
+});
+
+test("OCR acceptance retains every supported native document and reloads a concurrent winner", async (context) => {
+  const previousLifecycle = env.knowledgeLifecycleEnforced;
+  setEnvFlag("knowledgeLifecycleEnforced", true);
+  context.after(() => setEnvFlag("knowledgeLifecycleEnforced", previousLifecycle));
+  const directory = await mkdtemp(path.join(os.tmpdir(), "rag-ocr-multi-"));
+  context.after(() => rm(directory, { recursive: true, force: true }));
+  await writeFile(path.join(directory, "scanned.pdf"), buildPdf(""));
+  await writeFile(path.join(directory, "notes.txt"), "Native companion document\n");
+  const winner = { version: { versionId: "22222222-2222-4222-8222-222222222222", versionNumber: 7, state: "indexing" }, jobs: [{ jobId: "winner-job" }] };
+  let lookupCount = 0;
+  let candidateInput: Record<string, unknown> | undefined;
+  const catalog = {
+    async beginAttempt() { return "attempt-multi"; },
+    async updateAttempt() {},
+    async withSourceLock(_sourceId: string, handler: () => Promise<unknown>) { return handler(); },
+    async findPendingOcrVersion() { lookupCount += 1; return lookupCount === 1 ? undefined : winner; },
+    async createPendingVersion(input: Record<string, unknown>) {
+      candidateInput = input;
+      throw Object.assign(new Error("duplicate pending identity"), { code: "23505" });
+    }
+  };
+  const service = new IngestService(embeddingProvider(), vectorStore(), catalog as never, { enabled: true, artifactRoot: path.join(directory, "artifacts") });
+
+  const accepted = await service.ingest({ sourceId: "src:multi", sourceType: "folder", sourceRef: "bundle", readPath: directory, activate: true, expectedActiveVersionId: null });
+
+  assert.equal(accepted.versionId, winner.version.versionId);
+  assert.equal(candidateInput?.expectedDocumentCount, 2);
+  assert.deepEqual((candidateInput?.documents as Array<{ documentKey: string }>).map(({ documentKey }) => documentKey), ["notes.txt", "scanned.pdf"]);
+  assert.equal((candidateInput?.ocrJobs as unknown[]).length, 1);
+});
+
+test("application wiring dispatches a newly accepted OCR job from durable artifacts", async (context) => {
+  const previous = {
+    lifecycle: env.knowledgeLifecycleEnforced,
+    enabled: (env as unknown as Record<string, unknown>).ocrIngestEnabled,
+    root: (env as unknown as Record<string, unknown>).ocrArtifactRoot
+  };
+  const directory = await mkdtemp(path.join(os.tmpdir(), "rag-ocr-runtime-"));
+  context.after(() => rm(directory, { recursive: true, force: true }));
+  setEnvFlag("knowledgeLifecycleEnforced", true);
+  setEnvFlag("ocrIngestEnabled" as keyof typeof env, true);
+  setEnvFlag("ocrArtifactRoot" as keyof typeof env, path.join(directory, "artifacts"));
+  context.after(() => {
+    setEnvFlag("knowledgeLifecycleEnforced", previous.lifecycle);
+    setEnvFlag("ocrIngestEnabled" as keyof typeof env, previous.enabled);
+    setEnvFlag("ocrArtifactRoot" as keyof typeof env, previous.root);
+  });
+  const pdf = buildPdf("");
+  let queuedJob: Record<string, unknown> | undefined;
+  let persistedKey: unknown;
+  const dispatchCalls: string[] = [];
+  const catalog = {
+    async beginAttempt() { return "runtime-attempt"; }, async updateAttempt() {},
+    async withSourceLock(_sourceId: string, handler: () => Promise<unknown>) { return handler(); },
+    async findPendingOcrVersion() { return undefined; },
+    async createPendingVersion(input: Record<string, unknown>) {
+      const job = (input.ocrJobs as Array<Record<string, unknown>>)[0]!;
+      persistedKey = job.remoteIdempotencyKey;
+      queuedJob = { ...job, jobId: "runtime-job", versionId: input.versionId, remoteJobId: null, state: "queued", completedPages: 0, attemptCount: 0, heartbeatAt: null, leaseExpiresAt: null, nextAttemptAt: null, errorCode: null, errorDetail: null };
+      return { versionId: input.versionId, versionNumber: 3 };
+    },
+    async markIndexing() {},
+    async claimNextOcrJob() { const job = queuedJob; queuedJob = undefined; return job ? { ...job, state: "running", attemptCount: 1 } : undefined; },
+    async setOcrRemoteJob() {},
+    async requeueOcrJob() { dispatchCalls.push("requeued"); },
+    async completeOcrJob() { return false; }, async failOcrJob() {}, async markReviewRequired() {}, async markFailed() {}
+  };
+  const client = {
+    async submit(bytes: Buffer, _expected: unknown, key: string) { assert.equal(key, persistedKey); dispatchCalls.push(`${bytes.length}:${key}`); return { jobId: "runtime-remote" }; },
+    async getStatus() { return { jobId: "runtime-remote", status: "queued", completedPages: 0, totalPages: 1, error: null }; }
+  };
+  const server = createApp({ catalog: catalog as never, ocrClient: client as never, startReconciler: false }).listen(0);
+  context.after(() => server.close());
+  const address = server.address();
+  assert.ok(address && typeof address === "object");
+
+  const form = new FormData();
+  form.set("file", new Blob([new Uint8Array(pdf)], { type: "application/pdf" }), "runtime.pdf");
+  form.set("sourceId", "src:runtime");
+  form.set("activate", "true");
+  form.set("expectedActiveVersionId", "null");
+  const response = await fetch(`http://127.0.0.1:${address.port}/ingest/upload`, { method: "POST", body: form });
+  assert.equal(response.status, 202);
+  assert.equal((await response.json() as { uploadedResource: string }).uploadedResource, "runtime.pdf");
+  for (let attempt = 0; attempt < 20 && !dispatchCalls.includes("requeued"); attempt += 1) await new Promise((resolve) => setTimeout(resolve, 5));
+  assert.equal(dispatchCalls.length, 2);
+  assert.match(dispatchCalls[0]!, /^\d+:.+:ocr-v1:.+$/u);
+  assert.equal(dispatchCalls[1], "requeued");
+});
+
+test("dispatcher recovers only expired work, reuses its remote job, and completes it once", async () => {
+  const calls: string[] = [];
+  const job = {
+    jobId: "job-expired",
+    versionId: "version-1",
+    documentId: "document-1",
+    remoteJobId: "remote-1",
+    remoteIdempotencyKey: "persisted-key",
+    state: "queued" as const,
+    requestedPages: [1],
+    completedPages: 0,
+    configVersion: "ocr-v1",
+    attemptCount: 1,
+    heartbeatAt: null,
+    leaseExpiresAt: null,
+    nextAttemptAt: null,
+    errorCode: null,
+    errorDetail: null
+  };
+  let available = true;
+  const repository = {
+    async recoverExpiredOcrLeases() { calls.push("recover"); return [job]; },
+    async claimNextOcrJob() { throw new Error("recovery must not claim unrelated queued work"); },
+    async claimOcrJob(jobId: string) { assert.equal(jobId, job.jobId); if (!available) return undefined; available = false; calls.push("claim-exact"); return { ...job, state: "running" as const }; },
+    async setOcrRemoteJob() { calls.push("submit-persist"); },
+    async requeueOcrJob() { calls.push("requeue"); },
+    async completeOcrJob() { calls.push("complete"); return true; },
+    async failOcrJob() { calls.push("job-failed"); },
+    async markReviewRequired() { calls.push("review-required"); },
+    async markFailed() { calls.push("version-failed"); }
+  };
+  const client = {
+    async submit() { calls.push("submit"); throw new Error("existing remote work must not be duplicated"); },
+    async getStatus() { calls.push("status"); return { jobId: "remote-1", status: "succeeded", completedPages: 1, totalPages: 1, error: null }; },
+    async getResult() { calls.push("result"); return { pages: [{ page: 1 }] }; }
+  };
+  const dispatcher = new OcrDispatcher(repository, client as never, async () => ({ bytes: Buffer.from("pdf"), documentSha256: sha256Hex("pdf") }));
+
+  assert.equal(await dispatcher.recoverExpiredLeases(), 1);
+  assert.deepEqual(calls, ["recover", "claim-exact", "status", "result", "complete", "review-required"]);
+});
+
+test("OCR exhaustion fails the leased candidate without activation or engine substitution", async () => {
+  const calls: string[] = [];
+  const repository = {
+    async claimNextOcrJob() {
+      return { jobId: "job-1", versionId: "version-1", documentId: "document-1", remoteJobId: null, remoteIdempotencyKey: "same-key", state: "running", requestedPages: [1], completedPages: 0, configVersion: "ocr-v1", attemptCount: 1, heartbeatAt: null, leaseExpiresAt: null, nextAttemptAt: null, errorCode: null, errorDetail: null };
+    },
+    async setOcrRemoteJob() { calls.push("remote"); },
+    async requeueOcrJob() { calls.push("requeue"); },
+    async completeOcrJob() { calls.push("complete"); return false; },
+    async failOcrJob(_jobId: string, code: string) { calls.push(`job:${code}`); },
+    async markReviewRequired() { calls.push("review"); },
+    async markFailed(_versionId: string, code: string) { calls.push(`version:${code}`); }
+  };
+  const client = { async submit() { throw new Error("OCR unavailable after retries"); } };
+  const dispatcher = new OcrDispatcher(repository as never, client as never, async () => ({ bytes: Buffer.from("pdf"), documentSha256: sha256Hex("pdf") }));
+
+  assert.equal(await dispatcher.runOnce(), "failed");
+  assert.deepEqual(calls, ["job:OCR_DISPATCH_FAILED", "version:OCR_DISPATCH_FAILED"]);
+});
+
+test("reconciler makes expired OCR leases dispatchable while leaving live leases to PostgreSQL", async () => {
+  const calls: string[] = [];
+  const catalog = {
+    async withGlobalTryLock(_name: string, handler: () => Promise<unknown>) { return handler(); },
+    async resolveActiveVersions() { return []; },
+    async validateActiveInvariant() { return []; },
+    async listOrphanedIndexingCandidates() { return []; }
+  };
+  const dispatcher = {
+    async recoverExpiredLeases() { calls.push("ocr-recovery"); return 1; },
+    async dispatchAvailable() { calls.push("ocr-dispatch"); return 2; }
+  };
+  const reconciler = new KnowledgeLifecycleReconciler(catalog as never, vectorStore(), dispatcher as never);
+
+  const status = await reconciler.runOnce();
+
+  assert.equal(status.ocrLeasesRecovered, 1);
+  assert.deepEqual(calls, ["ocr-recovery", "ocr-dispatch"]);
+});
+
+test("runtime HTTP routing returns native 201, OCR 202/status, and catalog-down 503", async () => {
+  const previous = { knowledgeLifecycleEnforced: env.knowledgeLifecycleEnforced, lifecycleAdminToken: env.lifecycleAdminToken, ocrIngestEnabled: env.ocrIngestEnabled };
+  setEnvFlag("knowledgeLifecycleEnforced", true);
+  setEnvFlag("lifecycleAdminToken", "unit-8-token");
+  setEnvFlag("ocrIngestEnabled", true);
+  const versionId = "11111111-1111-4111-8111-111111111111";
+  const ingestService = {
+    async ingest(input: Record<string, unknown>) {
+      return input.sourceRef === "native.pdf"
+        ? { accepted: true, sourceId: "src:native", versionId: "native-1", versionNumber: 1, state: "active", filesDiscovered: 1, documentsProcessed: 1, chunksStored: 1, activated: true, noOp: false, collectionName: "rag" }
+        : { accepted: true, sourceId: "src:scan", versionId, versionNumber: 2, state: "indexing", phase: "ocr_queued", statusUrl: `/ingestions/${versionId}`, reviewUrl: null, activated: false };
+    },
+    async cleanup() { return { deleted: 0 }; }
+  };
+  const catalog = {
+    async getIngestionStatus(id: string) {
+      assert.equal(id, versionId);
+      return { sourceId: "src:scan", versionId, state: "indexing", phase: "ocr_running", activated: false, documents: [{ documentId: "doc:scan", state: "ocr_running", completedPages: 0, totalPages: 1, pages: [{ page: 1, method: "ocr", state: "ocr_running" }] }], error: null, statusUrl: `/ingestions/${versionId}`, reviewUrl: null };
+    }
+  };
+  const app = createApp({ ingestService: ingestService as never, catalog: catalog as never, startReconciler: false });
+  const server = app.listen(0);
+  try {
+    const address = server.address();
+    assert.ok(address && typeof address === "object");
+    const baseUrl = `http://127.0.0.1:${address.port}`;
+    const request = (sourceRef: string) => fetch(`${baseUrl}/ingest`, { method: "POST", headers: { "content-type": "application/json" }, body: JSON.stringify({ sourceType: "file", sourceRef }) });
+
+    assert.equal((await request("native.pdf")).status, 201);
+    const accepted = await request("scan.pdf");
+    assert.equal(accepted.status, 202);
+    assert.equal((await accepted.json() as { statusUrl: string }).statusUrl, `/ingestions/${versionId}`);
+    assert.equal((await fetch(`${baseUrl}/ingestions/${versionId}`)).status, 401);
+    const status = await fetch(`${baseUrl}/ingestions/${versionId}`, { headers: { authorization: "Bearer unit-8-token" } });
+    assert.equal(status.status, 200);
+    assert.equal((await status.json() as { phase: string }).phase, "ocr_running");
+
+    const unavailable = createApp({ ingestService: ingestService as never, catalog: undefined, startReconciler: false }).listen(0);
+    try {
+      const unavailableAddress = unavailable.address();
+      assert.ok(unavailableAddress && typeof unavailableAddress === "object");
+      const response = await fetch(`http://127.0.0.1:${unavailableAddress.port}/ingestions/${versionId}`, { headers: { authorization: "Bearer unit-8-token" } });
+      assert.equal(response.status, 503);
+      assert.equal((await response.json() as { code: string }).code, "CATALOG_UNAVAILABLE");
+      const retrieval = await fetch(`http://127.0.0.1:${unavailableAddress.port}/retrieve`, {
+        method: "POST",
+        headers: { "content-type": "application/json" },
+        body: JSON.stringify({ query: "previous active content", mode: "documental", intent: "specific" })
+      });
+      assert.equal(retrieval.status, 503);
+      assert.equal((await retrieval.json() as { code: string }).code, "CATALOG_UNAVAILABLE");
+    } finally {
+      unavailable.close();
+    }
+  } finally {
+    server.close();
+    setEnvFlag("knowledgeLifecycleEnforced", previous.knowledgeLifecycleEnforced);
+    setEnvFlag("lifecycleAdminToken", previous.lifecycleAdminToken);
+    setEnvFlag("ocrIngestEnabled", previous.ocrIngestEnabled);
+  }
+});
+
+test("status reports all native and OCR documents and fails the version when one document fails", async () => {
+  let query = 0;
+  const pool = { async query() {
+    query += 1;
+    if (query === 1) return { rowCount: 1, rows: [{ source_id: "src:mixed", state: "failed", error_code: "OCR_QUALITY_BLOCKED", error_detail: "Visible ink failed OCR quality" }] };
+    if (query === 2) return { rowCount: 2, rows: [
+      { document_id: "doc:native", index_state: "indexing", job_state: null, completed_pages: null, requested_pages: null },
+      { document_id: "doc:ocr", index_state: "failed", job_state: "failed", completed_pages: 0, requested_pages: [2] }
+    ] };
+    return { rowCount: 3, rows: [
+      { document_id: "doc:native", page_number: 1, extraction_method: "native", blocked_reason: null },
+      { document_id: "doc:ocr", page_number: 1, extraction_method: "native", blocked_reason: null },
+      { document_id: "doc:ocr", page_number: 2, extraction_method: "ocr", blocked_reason: "OCR_QUALITY_BLOCKED" }
+    ] };
+  } };
+  const status = await new CatalogRepository(pool as never).getIngestionStatus("version-mixed") as {
+    phase: string; documents: Array<{ documentId: string; completedPages: number; totalPages: number }>; error: { code: string }
+  };
+
+  assert.equal(status.phase, "failed");
+  assert.deepEqual(status.documents.map(({ documentId, completedPages, totalPages }) => [documentId, completedPages, totalPages]), [
+    ["doc:native", 1, 1], ["doc:ocr", 1, 2]
+  ]);
+  assert.equal(status.error.code, "OCR_QUALITY_BLOCKED");
+});
diff --git a/tests/ocr/e2e.test.ts b/tests/ocr/e2e.test.ts
new file mode 100644
index 0000000..0a3914a
--- /dev/null
+++ b/tests/ocr/e2e.test.ts
@@ -0,0 +1,183 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { createApp } from "../../src/app.js";
+import { env } from "../../src/config/env.js";
+import { OcrDispatcher } from "../../src/modules/ocr/dispatcher.js";
+import { OcrIndexingService } from "../../src/modules/ocr/indexing.js";
+import { OcrReviewService, type OcrReviewCandidate } from "../../src/modules/ocr/review.js";
+import { sha256Hex } from "../../src/shared/utils/ids.js";
+
+const token = "local-e2e-token";
+const scanVersion = "11111111-1111-4111-8111-111111111111";
+const mixedVersion = "22222222-2222-4222-8222-222222222222";
+
+function headers(json = false): Record<string, string> {
+  return { authorization: `Bearer ${token}`, ...(json ? { "content-type": "application/json" } : {}) };
+}
+
+function candidate(): OcrReviewCandidate {
+  const text = "CBGO4a";
+  return {
+    versionId: scanVersion,
+    sourceId: "src:scan",
+    state: "review_required",
+    candidateSha256: "candidate-hash",
+    baseActiveVersionId: "previous-active",
+    currentActiveVersionId: "previous-active",
+    activateRequested: true,
+    processingFingerprint: "fingerprint",
+    metadataHash: "metadata",
+    documents: [{
+      documentId: "doc:scan",
+      pages: [{
+        page: 1,
+        imageUrl: `/ingestions/${scanVersion}/documents/doc:scan/pages/1/image`,
+        nativeText: "",
+        ocr: { text, lines: [{ lineId: "line-1", text, confidence: 0.72, bbox: [1, 2, 30, 12], lineSha256: sha256Hex(text) }] },
+        candidateText: text,
+        differences: ["native text is empty"],
+        risks: [text]
+      }]
+    }]
+  };
+}
+
+test("local HTTP flow keeps native ingestion synchronous and activates only reviewed OCR content", async (context) => {
+  const previous = { lifecycle: env.knowledgeLifecycleEnforced, enabled: env.ocrIngestEnabled, token: env.lifecycleAdminToken };
+  Object.assign(env, { knowledgeLifecycleEnforced: true, ocrIngestEnabled: true, lifecycleAdminToken: token });
+  context.after(() => Object.assign(env, {
+    knowledgeLifecycleEnforced: previous.lifecycle,
+    ocrIngestEnabled: previous.enabled,
+    lifecycleAdminToken: previous.token
+  }));
+  let reviewCandidate = candidate();
+  let reviewedText = "";
+  const states = new Map([[scanVersion, "review_required"], [mixedVersion, "review_required"]]);
+  const ingestService = {
+    async ingest(input: { sourceRef: string }) {
+      if (input.sourceRef === "native.pdf") {
+        return { accepted: true, sourceId: "src:native", versionId: "native-active", versionNumber: 1, state: "active", filesDiscovered: 1, documentsProcessed: 1, chunksStored: 1, activated: true, noOp: false, collectionName: "rag" };
+      }
+      const versionId = input.sourceRef === "mixed.pdf" ? mixedVersion : scanVersion;
+      return { accepted: true, sourceId: `src:${input.sourceRef}`, versionId, versionNumber: 2, state: "indexing", phase: "ocr_queued", statusUrl: `/ingestions/${versionId}`, reviewUrl: null, activated: false };
+    },
+    async cleanup() { return { deleted: 0 }; }
+  };
+  const catalog = {
+    async claimNextOcrJob() { return undefined; },
+    async getIngestionStatus(versionId: string) {
+      const state = states.get(versionId);
+      if (!state) return undefined;
+      const mixed = versionId === mixedVersion;
+      return {
+        sourceId: mixed ? "src:mixed.pdf" : "src:scan.pdf", versionId, state, phase: state,
+        activated: state === "active",
+        documents: mixed
+          ? [{ documentId: "doc:mixed", state: "ocr_complete", completedPages: 2, totalPages: 2, pages: [
+            { page: 1, method: "native", state: "native_complete" }, { page: 2, method: "ocr", state: "ocr_complete" }
+          ] }]
+          : [{ documentId: "doc:scan", state: "ocr_complete", completedPages: 1, totalPages: 1, pages: [{ page: 1, method: "ocr", state: "ocr_complete" }] }],
+        error: null, statusUrl: `/ingestions/${versionId}`, reviewUrl: state === "review_required" ? `/ingestions/${versionId}/review` : null
+      };
+    }
+  };
+  const review = new OcrReviewService({
+    async loadCandidate(versionId) { return versionId === scanVersion ? reviewCandidate : undefined; },
+    async commitApproval(input) {
+      reviewedText = input.reviewedText;
+      reviewCandidate = { ...reviewCandidate, state: "indexing" };
+      states.set(scanVersion, "indexing");
+    },
+    async commitRejection() { throw new Error("rejection is outside this flow"); }
+  });
+  const indexing = new OcrIndexingService({
+    async findReusableVersion() { return undefined; },
+    async indexReviewed(value) { assert.equal(value.reviewedText, "CBG04a"); return 1; },
+    async markReady(versionId) { states.set(versionId, "ready"); },
+    async settleReusable() { throw new Error("candidate is not reusable"); },
+    async activateVersion(_sourceId, versionId, expected) {
+      assert.equal(expected, "previous-active");
+      states.set(versionId, "active");
+      return versionId;
+    }
+  });
+  const server = createApp({ ingestService: ingestService as never, catalog: catalog as never, ocrClient: {} as never, reviewService: review, indexingService: indexing, startReconciler: false }).listen(0);
+  context.after(() => server.close());
+  const address = server.address();
+  assert.ok(address && typeof address === "object");
+  const base = `http://127.0.0.1:${address.port}`;
+  const ingest = (sourceRef: string) => fetch(`${base}/ingest`, { method: "POST", headers: headers(true), body: JSON.stringify({ sourceType: "file", sourceRef }) });
+
+  assert.equal((await ingest("native.pdf")).status, 201);
+  const accepted = await ingest("scanned.pdf");
+  assert.equal(accepted.status, 202);
+  assert.deepEqual(await accepted.json(), {
+    accepted: true, sourceId: "src:scanned.pdf", versionId: scanVersion, versionNumber: 2,
+    state: "indexing", phase: "ocr_queued", statusUrl: `/ingestions/${scanVersion}`, reviewUrl: null, activated: false
+  });
+  const reviewResponse = await fetch(`${base}/ingestions/${scanVersion}/review`, { headers: headers() });
+  assert.equal(reviewResponse.status, 200);
+  assert.deepEqual((await reviewResponse.json() as OcrReviewCandidate).documents[0]?.pages[0]?.risks, ["CBGO4a"]);
+  const approval = await fetch(`${base}/ingestions/${scanVersion}/approve`, {
+    method: "POST", headers: headers(true), body: JSON.stringify({
+      candidateSha256: "candidate-hash", expectedActiveVersionId: "previous-active", reviewedBy: "local-reviewer",
+      corrections: [{ documentId: "doc:scan", page: 1, lineId: "line-1", expectedLineSha256: sha256Hex("CBGO4a"), replacementText: "CBG04a" }]
+    })
+  });
+  assert.equal(approval.status, 200);
+  assert.deepEqual(await approval.json(), { versionId: scanVersion, state: "active", activated: true, activatedVersionId: scanVersion });
+  assert.equal(reviewedText, "CBG04a");
+  assert.equal((await fetch(`${base}/ingestions/${scanVersion}`, { headers: headers() }).then((response) => response.json()) as { state: string }).state, "active");
+
+  assert.equal((await ingest("mixed.pdf")).status, 202);
+  const mixed = await fetch(`${base}/ingestions/${mixedVersion}`, { headers: headers() }).then((response) => response.json()) as { documents: Array<{ pages: Array<{ method: string }> }> };
+  assert.deepEqual(mixed.documents[0]?.pages.map(({ method }) => method), ["native", "ocr"]);
+});
+
+test("resends reuse identity, OCR exhaustion fails closed, and catalog absence returns 503", async (context) => {
+  const previous = { lifecycle: env.knowledgeLifecycleEnforced, enabled: env.ocrIngestEnabled, token: env.lifecycleAdminToken };
+  Object.assign(env, { knowledgeLifecycleEnforced: true, ocrIngestEnabled: true, lifecycleAdminToken: token });
+  context.after(() => Object.assign(env, {
+    knowledgeLifecycleEnforced: previous.lifecycle,
+    ocrIngestEnabled: previous.enabled,
+    lifecycleAdminToken: previous.token
+  }));
+  const identities = new Map<string, string>();
+  let creations = 0;
+  const ingestService = {
+    async ingest(input: { sourceRef: string }) {
+      let versionId = identities.get(input.sourceRef);
+      if (!versionId) { versionId = input.sourceRef === "scan.pdf" ? scanVersion : mixedVersion; identities.set(input.sourceRef, versionId); creations += 1; }
+      return { accepted: true, sourceId: `src:${input.sourceRef}`, versionId, versionNumber: 1, state: "indexing", phase: "ocr_queued", statusUrl: `/ingestions/${versionId}`, reviewUrl: null, activated: false };
+    },
+    async cleanup() { return { deleted: 0 }; }
+  };
+  const server = createApp({ ingestService: ingestService as never, catalog: undefined, startReconciler: false }).listen(0);
+  context.after(() => server.close());
+  const address = server.address();
+  assert.ok(address && typeof address === "object");
+  const base = `http://127.0.0.1:${address.port}`;
+  const resend = () => fetch(`${base}/ingest`, { method: "POST", headers: headers(true), body: JSON.stringify({ sourceType: "file", sourceRef: "scan.pdf" }) }).then((response) => response.json()) as Promise<{ versionId: string }>;
+  assert.deepEqual([(await resend()).versionId, (await resend()).versionId], [scanVersion, scanVersion]);
+  assert.equal(creations, 1);
+
+  const calls: string[] = [];
+  let candidateState = "indexing";
+  const dispatcher = new OcrDispatcher({
+    async claimNextOcrJob() { return { jobId: "job", versionId: scanVersion, documentId: "doc", remoteJobId: null, remoteIdempotencyKey: "stable-key", state: "running", requestedPages: [1], completedPages: 0, configVersion: "ocr-v1", attemptCount: 1, heartbeatAt: null, leaseExpiresAt: null, nextAttemptAt: null, errorCode: null, errorDetail: null }; },
+    async claimOcrJob() { return undefined; }, async recoverExpiredOcrLeases() { return []; }, async setOcrRemoteJob() { calls.push("remote"); },
+    async requeueOcrJob() { calls.push("requeue"); }, async completeOcrJob() { calls.push("complete"); return false; },
+    async failOcrJob() { calls.push("job-failed"); }, async markReviewRequired() { calls.push("review"); },
+    async markFailed() { candidateState = "failed"; calls.push("version-failed"); }
+  }, { async submit() { throw new Error("OCR connection unavailable after bounded retries"); } } as never, async () => ({ bytes: Buffer.from("pdf"), documentSha256: sha256Hex("pdf") }));
+  assert.equal(await dispatcher.runOnce(), "failed");
+  assert.deepEqual(calls, ["job-failed", "version-failed"]);
+  assert.equal(candidateState, "failed");
+
+  const unavailableStatus = await fetch(`${base}/ingestions/${scanVersion}`, { headers: headers() });
+  assert.equal(unavailableStatus.status, 503);
+  assert.equal((await unavailableStatus.json() as { code: string }).code, "CATALOG_UNAVAILABLE");
+  const unavailableRetrieval = await fetch(`${base}/retrieve`, { method: "POST", headers: headers(true), body: JSON.stringify({ query: "prior active", mode: "documental", intent: "specific" }) });
+  assert.equal(unavailableRetrieval.status, 503);
+  assert.equal((await unavailableRetrieval.json() as { code: string }).code, "CATALOG_UNAVAILABLE");
+});
diff --git a/tests/ocr/retention.test.ts b/tests/ocr/retention.test.ts
new file mode 100644
index 0000000..61b573c
--- /dev/null
+++ b/tests/ocr/retention.test.ts
@@ -0,0 +1,134 @@
+import assert from "node:assert/strict";
+import { access, mkdir, mkdtemp, rm } from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import test from "node:test";
+import { createApp } from "../../src/app.js";
+import { env } from "../../src/config/env.js";
+import { KnowledgeLifecycleReconciler } from "../../src/modules/catalog/reconciler.js";
+import { CatalogRepository } from "../../src/modules/catalog/repository.js";
+import { OcrRetentionService, type OcrRetentionCandidate, type OcrRetentionStore } from "../../src/modules/ocr/retention.js";
+
+const activeId = "11111111-1111-4111-8111-111111111111";
+const failedId = "22222222-2222-4222-8222-222222222222";
+const deletingId = "33333333-3333-4333-8333-333333333333";
+
+function candidate(versionId: string, state: OcrRetentionCandidate["state"], artifactState: OcrRetentionCandidate["artifactState"] = "present"): OcrRetentionCandidate {
+  return { versionId, sourceId: `source:${versionId}`, state, artifactState };
+}
+
+test("repository retention selection applies exact TTLs and CAS-protects active versions", async () => {
+  const queries: Array<{ sql: string; params?: unknown[] }> = [];
+  const pool = { async query(sql: string, params?: unknown[]) {
+    queries.push({ sql, params });
+    if (sql.includes("SELECT v.version_id")) return { rowCount: 1, rows: [{ version_id: failedId, source_id: "source:failed", state: "failed", artifact_state: "present" }] };
+    return { rowCount: 1, rows: [] };
+  } };
+  const repository = new CatalogRepository(pool as never);
+  const now = new Date("2026-09-15T12:00:00.000Z");
+
+  assert.deepEqual(await repository.listOcrRetentionCandidates(now), [{ ...candidate(failedId, "failed"), sourceId: "source:failed" }]);
+  assert.equal(await repository.expireOcrReview("source:review", activeId, now), true);
+  assert.equal(await repository.claimOcrRetentionDeletion("source:failed", failedId, "failed", "present"), true);
+  assert.equal(await repository.completeOcrRetentionDeletion("source:failed", failedId, "failed"), true);
+
+  assert.match(queries[0]!.sql, /review_required.*30 days.*failed.*rejected.*7 days.*superseded.*30 days/s);
+  assert.match(queries[0]!.sql, /active_version_id IS DISTINCT FROM v\.version_id/);
+  assert.deepEqual(queries[0]!.params, [now]);
+  assert.match(queries[1]!.sql, /state = 'rejected'.*REVIEW_EXPIRED.*retention_due_at/s);
+  assert.match(queries[2]!.sql, /SET artifact_state = 'retention_deleting'.*state = \$3.*artifact_state = \$4/s);
+  assert.match(queries[2]!.sql, /active_version_id IS DISTINCT FROM v\.version_id/);
+  assert.match(queries[3]!.sql, /artifact_state = 'retention_deleted'.*artifact_state = 'retention_deleting'/s);
+});
+
+test("activation cannot race an artifact deletion already claimed by retention", async () => {
+  const pool = {
+    async query(sql: string) {
+      if (sql.includes("maintenance")) return { rowCount: 1, rows: [{ maintenance: false }] };
+      if (sql.includes("FROM rag_sources")) return { rowCount: 1, rows: [{ active_version_id: null }] };
+      return { rowCount: 1, rows: [{ version_id: failedId, source_id: "source:failed", version_number: 2, previous_version_id: null, state: "ready", tags: [], source_content_hash: "hash", processing_fingerprint: "fingerprint", metadata_hash: "metadata", embedding_provider: "test", embedding_model: "test", embedding_dimensions: 3, expected_document_count: 1, expected_point_count: 1, verified_point_count: 1, qdrant_collection: "rag", artifact_state: "retention_deleting" }] };
+    },
+    async connect() { return { query: this.query, release() {} }; }
+  };
+  const repository = new CatalogRepository(pool as never);
+
+  await assert.rejects(repository.activateVersion("source:failed", failedId, null), (error) => error instanceof Error && (error as { code?: string }).code === "VERSION_ARTIFACTS_UNAVAILABLE");
+});
+
+test("retention expires review before removal and preserves active artifacts", async (context) => {
+  const root = await mkdtemp(path.join(os.tmpdir(), "rag-retention-"));
+  context.after(() => rm(root, { recursive: true, force: true }));
+  await Promise.all([activeId, failedId].map((id) => mkdir(path.join(root, id))));
+  const calls: string[] = [];
+  const store: OcrRetentionStore = {
+    async listOcrRetentionCandidates() { return [candidate(activeId, "active"), candidate(failedId, "failed"), candidate(deletingId, "review_required")]; },
+    async withVersionTryLock(versionId, handler) { calls.push(`lock:${versionId}`); return handler(); },
+    async expireOcrReview(_sourceId, versionId) { calls.push(`expire:${versionId}`); return true; },
+    async claimOcrRetentionDeletion(_sourceId, versionId) { calls.push(`claim:${versionId}`); return true; },
+    async completeOcrRetentionDeletion(_sourceId, versionId) { calls.push(`complete:${versionId}`); return true; }
+  };
+
+  assert.deepEqual(await new OcrRetentionService(store, root).runOnce(), { expired: 1, deleted: 1, resumed: 0, skipped: 1 });
+  await access(path.join(root, activeId));
+  await assert.rejects(access(path.join(root, failedId)));
+  assert.equal(calls.some((call) => call.includes(activeId)), false);
+  assert.equal(calls.includes(`expire:${deletingId}`), true);
+});
+
+test("interrupted deletion resumes idempotently without affecting another version", async (context) => {
+  const root = await mkdtemp(path.join(os.tmpdir(), "rag-retention-resume-"));
+  context.after(() => rm(root, { recursive: true, force: true }));
+  await Promise.all([deletingId, activeId].map((id) => mkdir(path.join(root, id))));
+  let completed = false;
+  let failCompletion = true;
+  const store: OcrRetentionStore = {
+    async listOcrRetentionCandidates() { return completed ? [] : [candidate(deletingId, "rejected", "retention_deleting")]; },
+    async withVersionTryLock(_versionId, handler) { return handler(); }, async expireOcrReview() { return false; },
+    async claimOcrRetentionDeletion() { return true; },
+    async completeOcrRetentionDeletion() { if (failCompletion) { failCompletion = false; throw new Error("simulated restart"); } completed = true; return true; }
+  };
+  const retention = new OcrRetentionService(store, root);
+
+  await assert.rejects(retention.runOnce(), /simulated restart/);
+  await assert.rejects(access(path.join(root, deletingId)));
+  assert.deepEqual(await retention.runOnce(), { expired: 0, deleted: 0, resumed: 1, skipped: 0 });
+  assert.deepEqual(await retention.runOnce(), { expired: 0, deleted: 0, resumed: 0, skipped: 0 });
+  await access(path.join(root, activeId));
+});
+
+test("OCR flag off keeps native HTTP synchronous and hides candidate surfaces", async (context) => {
+  const previous = { enabled: env.ocrIngestEnabled, lifecycle: env.knowledgeLifecycleEnforced, token: env.lifecycleAdminToken };
+  Object.assign(env, { ocrIngestEnabled: false, knowledgeLifecycleEnforced: true, lifecycleAdminToken: "retention-token" });
+  context.after(() => Object.assign(env, previous));
+  let candidateReads = 0;
+  const native = { accepted: true, sourceId: "source:native", versionId: "native-1", state: "active" };
+  const app = createApp({
+    ingestService: { async ingest() { return native; }, async cleanup() { return { deleted: 0 }; } } as never,
+    catalog: { async getIngestionStatus() { candidateReads += 1; return {}; } } as never,
+    reviewService: { async view() { candidateReads += 1; return {}; }, async approve() { candidateReads += 1; return {} as never; }, async reject() { candidateReads += 1; return {} as never; } },
+    indexingService: { async index() { candidateReads += 1; return {} as never; } }, startReconciler: false
+  });
+  const server = app.listen(0);
+  context.after(() => server.close());
+  const address = server.address();
+  assert.ok(address && typeof address === "object");
+  const base = `http://127.0.0.1:${address.port}`;
+
+  assert.equal((await fetch(`${base}/ingest`, { method: "POST", headers: { "content-type": "application/json" }, body: "{}" })).status, 201);
+  for (const [suffix, method] of [["", "GET"], ["/review", "GET"], ["/approve", "POST"], ["/reject", "POST"]] as const) {
+    assert.equal((await fetch(`${base}/ingestions/${failedId}${suffix}`, { method, headers: { authorization: "Bearer retention-token", "content-type": "application/json" }, body: method === "POST" ? "{}" : undefined })).status, 404);
+  }
+  assert.equal(candidateReads, 0);
+});
+
+test("reconciler runs retention inside its exclusive global lock", async () => {
+  let locked = false;
+  const catalog = {
+    async withGlobalTryLock(_name: string, handler: () => Promise<unknown>) { locked = true; try { return await handler(); } finally { locked = false; } },
+    async resolveActiveVersions() { return []; }, async validateActiveInvariant() { return []; }, async listOrphanedIndexingCandidates() { return []; }
+  };
+  const retention = { async runOnce() { assert.equal(locked, true); return { expired: 0, deleted: 0, resumed: 0, skipped: 0 }; } };
+  const reconciler = new KnowledgeLifecycleReconciler(catalog as never, {} as never, undefined, retention);
+
+  assert.equal((await reconciler.runOnce()).ocrRetentionDeleted, 0);
+});
diff --git a/tests/ocr/review.test.ts b/tests/ocr/review.test.ts
new file mode 100644
index 0000000..d180e7f
--- /dev/null
+++ b/tests/ocr/review.test.ts
@@ -0,0 +1,185 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { createApp } from "../../src/app.js";
+import { env } from "../../src/config/env.js";
+import { CatalogError } from "../../src/modules/catalog/errors.js";
+import { OcrIndexingService, type ApprovedOcrCandidate, type OcrIndexingStore } from "../../src/modules/ocr/indexing.js";
+import { OcrReviewService, type OcrReviewCandidate } from "../../src/modules/ocr/review.js";
+import { sha256Hex } from "../../src/shared/utils/ids.js";
+
+function candidate(state: OcrReviewCandidate["state"] = "review_required"): OcrReviewCandidate {
+  const lines = ["CBGO4a", "FATo7"].map((text, index) => ({
+    lineId: `line-${index + 1}`, text, confidence: 0.7, bbox: [0, index * 10, 50, index * 10 + 8] as [number, number, number, number], lineSha256: sha256Hex(text)
+  }));
+  return {
+    versionId: "version-2", sourceId: "source-1", state, candidateSha256: "candidate-hash",
+    baseActiveVersionId: "version-1", currentActiveVersionId: "version-1", activateRequested: true,
+    processingFingerprint: "fingerprint", metadataHash: "metadata", documents: [{ documentId: "document-1", pages: [{
+      page: 1, imageUrl: "/private/page-1.png", nativeText: "", ocr: { text: "CBGO4a\nFATo7", lines },
+      candidateText: "CBGO4a\nFATo7", differences: ["native text is empty"], risks: ["CBGO4a", "FATo7"]
+    }] }]
+  };
+}
+
+test("review HTTP rejects unauthorized and premature access without exposing artifacts", async (context) => {
+  const previous = { token: env.lifecycleAdminToken, enabled: env.ocrIngestEnabled };
+  Object.assign(env, { lifecycleAdminToken: "review-token", ocrIngestEnabled: true });
+  context.after(() => Object.assign(env, { lifecycleAdminToken: previous.token, ocrIngestEnabled: previous.enabled }));
+  let value = candidate();
+  let reads = 0;
+  const review = new OcrReviewService({ async loadCandidate() { reads += 1; return value; }, async commitApproval() { throw new Error("not called"); } });
+  const server = createApp({ reviewService: review, startReconciler: false }).listen(0);
+  context.after(() => server.close());
+  const address = server.address();
+  assert.ok(address && typeof address === "object");
+  const url = `http://127.0.0.1:${address.port}/ingestions/version-2/review`;
+
+  const unauthorized = await fetch(url);
+  assert.equal(unauthorized.status, 401);
+  assert.equal((await fetch(url.replace("/review", "/approve"), { method: "POST" })).status, 401);
+  assert.equal(reads, 0);
+  value = candidate("indexing");
+  const premature = await fetch(url, { headers: { authorization: "Bearer review-token" } });
+  assert.equal(premature.status, 409);
+  assert.deepEqual(await premature.json(), { ok: false, error: "Version is not awaiting OCR review", code: "INVALID_VERSION_STATE" });
+});
+
+test("review exposes audit detail and commits current corrections as one immutable set", async () => {
+  const commits: unknown[] = [];
+  const service = new OcrReviewService({ async loadCandidate() { return candidate(); }, async commitApproval(value) { commits.push(value); } });
+  const review = await service.view("version-2");
+  assert.deepEqual(review.documents[0]?.pages[0]?.ocr.lines.map(({ text, confidence, bbox }) => [text, confidence, bbox]), [
+    ["CBGO4a", 0.7, [0, 0, 50, 8]], ["FATo7", 0.7, [0, 10, 50, 18]]
+  ]);
+  assert.deepEqual(review.documents[0]?.pages[0]?.risks, ["CBGO4a", "FATo7"]);
+
+  const approved = await service.approve("version-2", {
+    candidateSha256: "candidate-hash", expectedActiveVersionId: "version-1", reviewedBy: "admin",
+    corrections: [
+      { documentId: "document-1", page: 1, lineId: "line-1", expectedLineSha256: sha256Hex("CBGO4a"), replacementText: "CBG04a" },
+      { documentId: "document-1", page: 1, lineId: "line-2", expectedLineSha256: sha256Hex("FATo7"), replacementText: "FAT07" }
+    ]
+  });
+  assert.equal(commits.length, 1);
+  assert.deepEqual((commits[0] as { corrections: Array<{ replacementText: string }> }).corrections.map(({ replacementText }) => replacementText), ["CBG04a", "FAT07"]);
+  assert.equal(approved.reviewedText, "CBG04a\nFAT07");
+  assert.equal(approved.reviewedTextSha256, sha256Hex("CBG04a\nFAT07"));
+});
+
+test("stale or duplicate corrections conflict before any correction or transition", async () => {
+  let commits = 0;
+  const service = new OcrReviewService({ async loadCandidate() { return candidate(); }, async commitApproval() { commits += 1; } });
+  const base = { candidateSha256: "stale", expectedActiveVersionId: "version-1", reviewedBy: "admin", corrections: [] };
+  await assert.rejects(service.approve("version-2", base), (error) => error instanceof CatalogError && error.statusCode === 409);
+  const duplicate = { ...base, candidateSha256: "candidate-hash", corrections: Array(2).fill({
+    documentId: "document-1", page: 1, lineId: "line-1", expectedLineSha256: sha256Hex("CBGO4a"), replacementText: "CBG04a"
+  }) };
+  await assert.rejects(service.approve("version-2", duplicate), (error) => error instanceof CatalogError && error.code === "CORRECTION_CONFLICT");
+  await assert.rejects(service.approve("version-2", { ...base, candidateSha256: "candidate-hash", expectedActiveVersionId: "version-old" }),
+    (error) => error instanceof CatalogError && error.code === "ACTIVE_VERSION_CHANGED");
+  await assert.rejects(service.approve("version-2", { ...base, candidateSha256: "candidate-hash", corrections: [{
+    documentId: "document-1", page: 1, lineId: "line-1", expectedLineSha256: sha256Hex("stale"), replacementText: "CBG04a"
+  }] }), (error) => error instanceof CatalogError && error.code === "CORRECTION_CONFLICT");
+  assert.equal(commits, 0);
+});
+
+function approved(activateRequested: boolean, state: ApprovedOcrCandidate["state"] = "indexing"): ApprovedOcrCandidate {
+  return { versionId: "version-2", sourceId: "source-1", state, activateRequested, expectedActiveVersionId: "version-1", reviewedText: "reviewed", reviewedTextSha256: sha256Hex("reviewed"), processingFingerprint: "fingerprint", metadataHash: "metadata" };
+}
+
+test("indexing activates only when requested and leaves a new candidate ready on an activation race", async () => {
+  const calls: string[] = [];
+  const store: OcrIndexingStore = {
+    async findReusableVersion() { return undefined; }, async indexReviewed() { calls.push("embed"); return 1; },
+    async markReady() { calls.push("ready"); }, async settleReusable() { throw new Error("not reusable"); },
+    async activateVersion() { calls.push("activate"); return "version-2"; }
+  };
+  const service = new OcrIndexingService(store);
+  assert.deepEqual(await service.index(approved(true)), { versionId: "version-2", state: "active", activated: true, activatedVersionId: "version-2" });
+  assert.deepEqual(calls.splice(0), ["embed", "ready", "activate"]);
+  assert.deepEqual(await service.index(approved(false)), { versionId: "version-2", state: "ready", activated: false });
+  assert.deepEqual(calls.splice(0), ["embed", "ready"]);
+  store.activateVersion = async () => { throw new CatalogError("race", 409, "ACTIVE_VERSION_PRECONDITION_FAILED"); };
+  await assert.rejects(service.index(approved(true)), (error) => error instanceof CatalogError && error.code === "ACTIVE_VERSION_CHANGED");
+  assert.deepEqual(calls, ["embed", "ready"]);
+});
+
+test("reusable and rejected candidates create no embeddings and reusable activation obeys CAS intent", async () => {
+  const calls: string[] = [];
+  const store: OcrIndexingStore = {
+    async findReusableVersion() { return { versionId: "version-existing" }; }, async indexReviewed() { calls.push("embed"); return 1; },
+    async markReady() { calls.push("ready"); }, async settleReusable(_candidate, _reusable, activate) { calls.push(`settle:${activate}`); return activate; },
+    async activateVersion() { throw new Error("new activation must not run"); }
+  };
+  const service = new OcrIndexingService(store);
+  assert.deepEqual(await service.index(approved(true)), { versionId: "version-2", state: "rejected", activated: true, activatedVersionId: "version-existing", errorCode: "DUPLICATE_REUSABLE_VERSION" });
+  assert.deepEqual(await service.index(approved(false)), { versionId: "version-2", state: "rejected", activated: false, errorCode: "DUPLICATE_REUSABLE_VERSION" });
+  store.settleReusable = async () => { throw new CatalogError("race", 409, "ACTIVE_VERSION_PRECONDITION_FAILED"); };
+  await assert.rejects(service.index(approved(true)), (error) => error instanceof CatalogError && error.code === "ACTIVE_VERSION_CHANGED");
+  await assert.rejects(service.index(approved(true, "rejected")), (error) => error instanceof CatalogError && error.code === "INVALID_VERSION_STATE");
+  assert.deepEqual(calls, ["settle:true", "settle:false"]);
+});
+
+test("authenticated rejection is durable, conflict-safe, and never indexes or activates", async (context) => {
+  const previous = { token: env.lifecycleAdminToken, enabled: env.ocrIngestEnabled };
+  Object.assign(env, { lifecycleAdminToken: "review-token", ocrIngestEnabled: true });
+  context.after(() => Object.assign(env, { lifecycleAdminToken: previous.token, ocrIngestEnabled: previous.enabled }));
+  let value = candidate();
+  let reads = 0;
+  const audits: Array<{ reviewedBy: string; reason: string }> = [];
+  const review = new OcrReviewService({
+    async loadCandidate() { reads += 1; return value; },
+    async commitApproval() { throw new Error("approval must not run"); },
+    async commitRejection({ reviewedBy, reason }) {
+      audits.push({ reviewedBy, reason });
+      value = { ...value, state: "rejected" };
+    }
+  });
+  let indexingCalls = 0;
+  const catalog = { async getIngestionStatus() {
+    return { versionId: value.versionId, state: value.state, phase: value.state, activated: false, error: value.state === "rejected" ? { code: "OCR_REJECTED", message: audits[0]?.reason, retryable: false } : null };
+  } };
+  const server = createApp({ catalog: catalog as never, reviewService: review, indexingService: { async index() { indexingCalls += 1; throw new Error("indexing must not run"); } }, startReconciler: false }).listen(0);
+  context.after(() => server.close());
+  const address = server.address();
+  assert.ok(address && typeof address === "object");
+  const url = `http://127.0.0.1:${address.port}/ingestions/version-2`;
+
+  const unauthorized = await fetch(`${url}/reject`, { method: "POST", headers: { "content-type": "application/json" }, body: JSON.stringify({ candidateSha256: "candidate-hash", reviewedBy: "admin", reason: "Unreadable code" }) });
+  assert.equal(unauthorized.status, 401);
+  assert.equal(reads, 0);
+  const invalid = await fetch(`${url}/reject`, { method: "POST", headers: { authorization: "Bearer review-token", "content-type": "application/json" }, body: "{}" });
+  assert.equal(invalid.status, 400);
+  assert.deepEqual(await invalid.json(), { ok: false, error: "Candidate hash, reviewer, and rejection reason are required", code: "INVALID_REJECTION" });
+  assert.equal(reads, 0);
+  const stale = await fetch(`${url}/reject`, { method: "POST", headers: { authorization: "Bearer review-token", "content-type": "application/json" }, body: JSON.stringify({ candidateSha256: "stale", reviewedBy: "admin", reason: "Unreadable code" }) });
+  assert.equal(stale.status, 409);
+  assert.equal(audits.length, 0);
+  const rejected = await fetch(`${url}/reject`, { method: "POST", headers: { authorization: "Bearer review-token", "content-type": "application/json" }, body: JSON.stringify({ candidateSha256: "candidate-hash", reviewedBy: "admin", reason: "Unreadable code" }) });
+  assert.equal(rejected.status, 200);
+  assert.deepEqual(await rejected.json(), { versionId: "version-2", state: "rejected", activated: false });
+  assert.deepEqual(audits, [{ reviewedBy: "admin", reason: "Unreadable code" }]);
+  const status = await fetch(url, { headers: { authorization: "Bearer review-token" } });
+  assert.equal(status.status, 200);
+  assert.deepEqual(await status.json(), { versionId: "version-2", state: "rejected", phase: "rejected", activated: false, error: { code: "OCR_REJECTED", message: "Unreadable code", retryable: false } });
+  const repeated = await fetch(`${url}/reject`, { method: "POST", headers: { authorization: "Bearer review-token", "content-type": "application/json" }, body: JSON.stringify({ candidateSha256: "candidate-hash", reviewedBy: "admin", reason: "Again" }) });
+  assert.equal(repeated.status, 409);
+  assert.equal(indexingCalls, 0);
+  assert.equal(audits.length, 1);
+});
+
+test("playground serves the authenticated OCR review controls and audit fields", async (context) => {
+  const server = createApp({ startReconciler: false }).listen(0);
+  context.after(() => server.close());
+  const address = server.address();
+  assert.ok(address && typeof address === "object");
+  const base = `http://127.0.0.1:${address.port}`;
+  const [html, script, styles] = await Promise.all([
+    fetch(`${base}/playground`).then((response) => response.text()),
+    fetch(`${base}/playground/app.js`).then((response) => response.text()),
+    fetch(`${base}/playground/styles.css`).then((response) => response.text())
+  ]);
+  for (const marker of ["data-tab=\"review\"", "reviewVersionId", "reviewToken", "loadReviewButton", "approveReviewButton", "rejectReviewButton", "reviewCandidate"]) assert.match(html, new RegExp(marker));
+  for (const marker of ["Authorization", "/review", "/approve", "/reject", "candidateSha256", "expectedLineSha256", "imageUrl", "nativeText", "confidence", "bbox", "differences", "risks"]) assert.match(script, new RegExp(marker));
+  assert.match(styles, /\.review-page/);
+});