> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase24-session09-end-to-end-validation-release-hardening/implementation-notes.md).

# Implementation Notes

**Session ID**: `phase24-session09-end-to-end-validation-release-hardening` **Started**: 2026-06-08 06:26 **Last Updated**: 2026-06-08 07:10

***

## Session Progress

| Metric              | Value   |
| ------------------- | ------- |
| Tasks Completed     | 20 / 20 |
| Estimated Remaining | 0       |
| Blockers            | 0       |

***

## Release-Hardening Matrix

| Area                 | Existing evidence                                                                                                                   | Closeout action                                                                                                  |
| -------------------- | ----------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------- |
| Source-local scoring | Session 01 validation PASS; focused ratio, low-sample, exclusion, and cap tests exist.                                              | Add down-weighted and actionability band regressions.                                                            |
| Enrichment and spend | Session 02 validation PASS; cache hit/stale/prune and spend state tests exist.                                                      | Add explicit saved-count, stale source summary, mixed estimate, unavailable, and cadence projection regressions. |
| Evidence assets      | Session 03 validation PASS; manifest, bridge, blocked, prune, traversal, and privacy tests exist.                                   | Add blocked/failed/pruned/unsafe-reference and bridge GET/error regressions.                                     |
| Source setup         | Session 04 validation PASS; setup target, reviewed source, private target, credential-shaped value, and atomic write tests exist.   | Add reviewed target edge cases and last-run source health coverage.                                              |
| Scheduler first-run  | Session 05 validation PASS; first-run, timer, cadence, spend, and redaction tests exist.                                            | Add safe live-progress summary and warning-bound regressions.                                                    |
| Signal Workbench     | Session 06 validation PASS; Workbench rows, search, states, local triage, Watchlist separation, and keyboard expansion tests exist. | Add local triage re-entry/reset and generated Watchlist separation proof.                                        |
| Static Brief export  | Session 07 validation PASS; export write, assets, unsafe payload, output root, and CLI tests exist.                                 | Add local triage exclusion, token-shaped value, and generated output determinism checks.                         |
| Reference mode/docs  | Session 08 validation PASS; 20/20 tasks and focused Reference mode tests passed.                                                    | Include closeout status in Session 09 notes and phase artifacts.                                                 |

## Command Ledger

| Command                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Result         | Notes                                                                                                                                                                                    |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `bash .spec_system/scripts/analyze-project.sh --json`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | PASS           | Current session resolved to `phase24-session09-end-to-end-validation-release-hardening`.                                                                                                 |
| `bash .spec_system/scripts/check-prereqs.sh --json --env`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | PASS           | Spec system, jq, and git available; not a monorepo.                                                                                                                                      |
| `bun run test -- scripts/extensions/trend-finder/__tests__/source-local-signals.test.ts`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | PASS           | 1 file, 7 tests passed.                                                                                                                                                                  |
| `bun run test -- scripts/extensions/trend-finder/__tests__/enrichment-cache.test.ts scripts/extensions/trend-finder/__tests__/spend-accounting.test.ts`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | PASS           | 2 files, 11 tests passed.                                                                                                                                                                |
| `bun run test -- scripts/extensions/trend-finder/__tests__/evidence-assets.test.ts scripts/lib/__tests__/trend-finder-asset-bridge.test.ts`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | PASS           | 2 files, 9 tests passed.                                                                                                                                                                 |
| `bun run test -- scripts/extensions/trend-finder/sources/__tests__/source-setup.test.ts scripts/lib/__tests__/trend-finder-scheduler-status.test.ts`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | PASS           | 2 files, 17 tests passed after source setup path redaction fix.                                                                                                                          |
| `bun run test -- src/extensions/trend-finder/components/__tests__/signal-workbench-view.test.tsx scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | PASS           | 2 files, 13 tests passed.                                                                                                                                                                |
| `bun run test -- src/lib/__tests__/trend-finder-schema.test.ts src/lib/__tests__/trend-finder-dashboard.test.tsx`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | PASS           | 2 files, 103 tests passed.                                                                                                                                                               |
| `bunx playwright test tests/e2e/trend-finder-release-hardening.spec.ts`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | PASS           | 2 tests passed after aligning assertions to rendered browser-safe Source Setup labels and Workbench accessibility names.                                                                 |
| `bunx playwright test tests/e2e/trend-finder-engine-replay.spec.ts`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | PASS           | 7 tests passed, including Phase 24 spend, source-local, asset, stage, and privacy labels.                                                                                                |
| `bunx playwright test tests/e2e/trend-finder-static-brief.spec.ts`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | PASS           | 1 test passed with deterministic HTML, safe links, privacy, and desktop/mobile overflow checks.                                                                                          |
| `bash scripts/check-private-runtime-artifacts.sh`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | PASS           | Extended metadata-only checker passed for Phase 24 cache, asset, scheduler, static Brief, and log paths.                                                                                 |
| `bun run test -- scripts/extensions/trend-finder/__tests__/source-local-signals.test.ts scripts/extensions/trend-finder/__tests__/enrichment-cache.test.ts scripts/extensions/trend-finder/__tests__/spend-accounting.test.ts scripts/extensions/trend-finder/__tests__/evidence-assets.test.ts scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts scripts/extensions/trend-finder/sources/__tests__/source-setup.test.ts scripts/lib/__tests__/trend-finder-asset-bridge.test.ts scripts/lib/__tests__/trend-finder-scheduler-status.test.ts src/extensions/trend-finder/components/__tests__/signal-workbench-view.test.tsx src/lib/__tests__/trend-finder-schema.test.ts src/lib/__tests__/trend-finder-dashboard.test.tsx` | PASS           | 11 files and 160 tests passed.                                                                                                                                                           |
| `bunx playwright test tests/e2e/trend-finder-release-hardening.spec.ts tests/e2e/trend-finder-engine-replay.spec.ts tests/e2e/trend-finder-static-brief.spec.ts tests/e2e/trend-finder.spec.ts`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | FAIL then PASS | First run failed 1 of 16 route-smoke tests because the saved Creator Lens test did not mock the newer live-progress status endpoint. After updating the mock, the rerun passed 16 tests. |
| `bun run test`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | PASS           | 241 files and 3106 tests passed.                                                                                                                                                         |
| `bun run typecheck`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | PASS           | `tsc --noEmit` passed.                                                                                                                                                                   |
| `bun run typecheck:scripts`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | PASS           | `tsc --noEmit -p tsconfig.scripts.json` passed.                                                                                                                                          |
| `bun run lint`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | FAIL then PASS | Initial run failed on Prettier formatting only. After targeted `prettier --write`, final run passed.                                                                                     |
| `bun run format:check`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | FAIL then PASS | Initial run reported 13 files needing Prettier formatting. After targeted `prettier --write`, final run passed.                                                                          |
| `bun run build`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | PASS           | `bun run seed:data && vite build` completed client and SSR builds.                                                                                                                       |
| `bun run runtime:check-private`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | PASS           | Private runtime artifact check passed.                                                                                                                                                   |
| `git diff --check`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | PASS           | No whitespace errors reported.                                                                                                                                                           |
| `bun run format:check`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | PASS           | Final post-notes format check passed.                                                                                                                                                    |
| Touched-file ASCII scan                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | PASS           | No non-ASCII bytes found in touched text files.                                                                                                                                          |
| Touched-file LF scan                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | PASS           | No CRLF line endings found in touched text files.                                                                                                                                        |
| Implementation/security note presence check                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | PASS           | `implementation-notes.md` and `security-compliance.md` are present and non-empty.                                                                                                        |

***

## Dogfood Plan

| Step | Route or command                                        | Expected proof                                                                                                                             |
| ---- | ------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------ |
| 1    | `/extensions/trend-finder/sources`                      | Missing-credential first-run state shows reviewed Source Setup targets and no raw config path.                                             |
| 2    | Run-now control                                         | Operator can trigger the local refresh path or fixture-backed mock and sees duplicate-action prevention while in flight.                   |
| 3    | Live progress                                           | Current stage, elapsed time, completed stages, per-source counts, skipped/offline/error states, and safe messages render without raw logs. |
| 4    | `/extensions/trend-finder/engine`                       | Engine Replay shows source-local labels, spend, asset availability/failure labels, provenance, and Reference mode without private strings. |
| 5    | `/extensions/trend-finder/workbench`                    | Local triage persists and reloads locally while generated Watchlist rows remain unchanged.                                                 |
| 6    | `/extensions/trend-finder/brief`                        | Brief renders bounded public links, spend/cache/assets summaries, and no local triage notes.                                               |
| 7    | `bun run trend-finder:export-brief -- --dry-run --json` | Static report can be projected deterministically and privacy scan remains clean.                                                           |

## Expected Privacy Assertions

* Browser payloads must not contain `.env`, account auth, bearer tokens, API keys, raw prompts, raw provider responses, raw logs, transcripts, raw source payloads, Actor input, Dataset rows, billing payloads, local triage notes, or local/private paths.
* Static Brief output must contain only browser-safe report rows and report-local copied assets. It must fail before writing when privacy issues are detected.
* Private artifact checks must use git metadata only and must not read private cache or generated runtime contents.
* Source setup and scheduler status diagnostics must expose stable codes, bounded counts, reviewed labels, and redacted messages only.

## Phase Closeout Evidence

### Folded Outlier source memo state

The folded Outlier Lab source memo is implemented through Phase 24 Sessions 01-08 and covered by Session 09 release-hardening proofs. The old ongoing-project memo remains deleted; completion state now lives in the Phase 24 PRD, this implementation log, and the Session 09 security-compliance note.

| Folded finding group                                                         | Completion evidence                                                        |
| ---------------------------------------------------------------------------- | -------------------------------------------------------------------------- |
| Source-local ratios, promoted/pinned exclusions, and actionability bands     | Session 01 implementation plus T004 focused regressions.                   |
| Delta-aware enrichment, pruning, spend summaries, and cadence projections    | Session 02 implementation plus T005 focused regressions.                   |
| Browser-safe evidence assets, unsafe-reference filtering, and file hardening | Session 03 implementation plus T006 and T014 privacy checks.               |
| Reviewed source setup, target validation, and source health summaries        | Session 04 implementation plus T007 and T011 browser proof.                |
| Scheduler first-run controls and live progress summaries                     | Session 05 implementation plus T007 and T011 browser proof.                |
| Signal Workbench local-only triage                                           | Session 06 implementation plus T008 and T011 browser proof.                |
| Optional static Brief export                                                 | Session 07 implementation plus T008, T013, and T014 export/privacy checks. |
| Cross-surface docs and Reference mode                                        | Session 08 validation plus T016 phase closeout note.                       |

### Dogfood observations

* Missing-credential first-run state renders reviewed Source Setup and Scheduler labels without raw config paths or credential-shaped values.
* Run-now fixture transition reaches completed Scheduler, Source Setup, Engine Replay, Workbench, Brief, and static Brief export states.
* Engine Replay exposes source-local, spend, enrichment, asset, artifact, and runtime aggregate labels while hiding prompts, responses, tokens, and local paths.
* Workbench local triage persists for the generated run key and does not mutate generated Watchlist or static Brief output.
* Static Brief dry-run output is deterministic for fixed input, scans safe public links only, and excludes local triage notes and private runtime strings.
* Disabled, loading, empty, error, and offline route states have explicit browser coverage.

### Changed files for Session 09

* `.spec_system/archive/sessions/phase24-session09-end-to-end-validation-release-hardening/implementation-notes.md`
* `.spec_system/archive/sessions/phase24-session09-end-to-end-validation-release-hardening/security-compliance.md`
* `.spec_system/archive/sessions/phase24-session09-end-to-end-validation-release-hardening/spec.md`
* `.spec_system/archive/sessions/phase24-session09-end-to-end-validation-release-hardening/tasks.md`
* `.spec_system/archive/phases/phase_24/PRD_phase_24.md`
* `scripts/check-private-runtime-artifacts.sh`
* `scripts/extensions/trend-finder/__tests__/enrichment-cache.test.ts`
* `scripts/extensions/trend-finder/__tests__/evidence-assets.test.ts`
* `scripts/extensions/trend-finder/__tests__/source-local-signals.test.ts`
* `scripts/extensions/trend-finder/__tests__/spend-accounting.test.ts`
* `scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts`
* `scripts/extensions/trend-finder/sources/__tests__/source-setup.test.ts`
* `scripts/extensions/trend-finder/sources/source-setup.ts`
* `scripts/lib/__tests__/trend-finder-asset-bridge.test.ts`
* `scripts/lib/__tests__/trend-finder-scheduler-status.test.ts`
* `scripts/lib/trend-finder-scheduler-status.ts`
* `src/extensions/trend-finder/components/__tests__/signal-workbench-view.test.tsx`
* `src/extensions/trend-finder/fixtures.ts`
* `tests/e2e/fixtures/live-data.ts`
* `tests/e2e/trend-finder-engine-replay.spec.ts`
* `tests/e2e/trend-finder-release-hardening.spec.ts`
* `tests/e2e/trend-finder.spec.ts`
* `tests/e2e/trend-finder-static-brief.spec.ts`

### Residual risks

* Live third-party source collection was not used for release confidence; fixture-backed and missing-credential states remain the intended Session 09 proof.
* New public source adapters, direct Product Hunt/YouTube source behavior, and public static hosting remain deferred to separate compliance and operator decisions.
* No implementation handoff blocker remains. Live third-party collection and public/static hosting decisions are intentionally outside Session 09.

***

## Task Log

### 2026-06-08 - Session Start

**Environment verified**:

* [x] Prerequisites confirmed
* [x] Tools available
* [x] Directory structure ready

### Task T001 - Verify Phase 24 Sessions 01-08 validation status

**Started**: 2026-06-08 06:26 **Completed**: 2026-06-08 06:26 **Duration**: 1 minute

**Notes**:

* Confirmed the active state lists Sessions 01-08 as completed and Session 09 as the current incomplete session.
* Reviewed Session 01-08 validation and summary artifacts. Sessions 01, 02, 03, 04, 05, 07, and 08 show PASS validation evidence. Session 06 shows PASS validation with an unrelated prior full-repo timeout documented, while focused Workbench coverage passed.
* No unresolved Phase 24 release blocker was found in the previous session artifacts.

**Files Changed**:

* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/implementation-notes.md` - Created session notes and closeout matrix.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T001 complete.

### Task T002 - Audit existing Trend Finder regression coverage

**Started**: 2026-06-08 06:26 **Completed**: 2026-06-08 06:27 **Duration**: 1 minute

**Notes**:

* Audited focused script tests under `scripts/extensions/trend-finder/__tests__/`, source setup tests under `scripts/extensions/trend-finder/sources/__tests__/`, scheduler and asset bridge tests under `scripts/lib/__tests__/`, component tests under `src/extensions/trend-finder/components/__tests__/`, and browser tests under `tests/e2e/`.
* Existing coverage already exercises core happy paths and several failure paths, so new fixture work should be additive and targeted to the Session 09 gaps rather than broad rewrites.
* Missing closeout regressions were mapped to T004-T013: down-weighted source-local math, actionability bands, cache saved/stale/prune counts, spend unavailable/mixed cadence projections, asset serving edge cases, source setup last-run health, scheduler safe summaries, Workbench reset/persistence, static export privacy, and browser release proof.

**Files Changed**:

* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/implementation-notes.md` - Added regression coverage audit notes.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T002 complete.

### Task T003 - Confirm generated and private artifact coverage

**Started**: 2026-06-08 06:27 **Completed**: 2026-06-08 06:28 **Duration**: 1 minute

**Notes**:

* Reviewed `.gitignore` and `scripts/check-private-runtime-artifacts.sh`.
* Existing ignore rules cover generated live data, auth data, scheduler config, visibility config, Apify source setup config, repo-local runtime roots, logs, coverage, Playwright output, test results, dogfood output, and `.cache/`.
* Existing checker enumerates generated live data, OpenAI account auth, Trend Finder snapshots, raw output, backtests, logs, coverage, test results, and Playwright report paths.
* T014 will extend the checker with explicit Phase 24 enrichment cache, evidence asset cache, scheduler state/log, and static Brief export paths using the same git metadata-only pattern.

**Files Changed**:

* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/implementation-notes.md` - Added artifact privacy audit notes.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T003 complete.

### Task T004 - Add source-local closeout regressions

**Started**: 2026-06-08 06:28 **Completed**: 2026-06-08 06:29 **Duration**: 1 minute

**Notes**:

* Added regressions proving promoted and pinned placements stay excluded and do not satisfy small-sample baselines.
* Added down-weighted placement coverage proving down-weighted values participate in baselines while organic counts remain bounded to included placements.
* Added actionability band coverage for below-baseline, near-baseline, and moderate-lift outputs.
* Focused test command passed.

**Files Changed**:

* `scripts/extensions/trend-finder/__tests__/source-local-signals.test.ts` - Added closeout fixture cases for placement exclusions, down-weighted baselines, and actionability bands.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T004 complete.

**BQC Fixes**:

* Contract alignment: verified expected source-local fields and labels match the browser schema contract through focused regression assertions.

### Task T005 - Add enrichment cache and spend accounting closeout regressions

**Started**: 2026-06-08 06:29 **Completed**: 2026-06-08 06:30 **Duration**: 1 minute

**Notes**:

* Added per-source cache accounting coverage for hit/saved, stale/written, skipped, retained, and pruned counts.
* Added mixed spend projection coverage across exact, estimated, unavailable, and no-cost sources.
* Added fully unavailable paid spend coverage to keep missing usage explicit and cadence estimates disabled.
* Focused cache and spend test command passed.

**Files Changed**:

* `scripts/extensions/trend-finder/__tests__/enrichment-cache.test.ts` - Added per-source cache count regression.
* `scripts/extensions/trend-finder/__tests__/spend-accounting.test.ts` - Added mixed and unavailable spend projection regressions.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T005 complete.

**BQC Fixes**:

* Contract alignment: asserted run summary counts and cadence projection fields remain explicit for hit, stale, skipped, unavailable, and mixed states.

### Task T006 - Add evidence asset closeout regressions

**Started**: 2026-06-08 06:30 **Completed**: 2026-06-08 06:31 **Duration**: 1 minute

**Notes**:

* Added asset manifest regression coverage for unsafe available references being filtered rather than projected to browser data.
* Added failed, blocked, and pruned state summary assertions.
* Added asset bridge malformed manifest coverage that fails closed without exposing private roots or path-shaped content.
* Focused evidence asset and asset bridge test command passed.

**Files Changed**:

* `scripts/extensions/trend-finder/__tests__/evidence-assets.test.ts` - Added unsafe-reference, failed, blocked, and pruned summary regressions.
* `scripts/lib/__tests__/trend-finder-asset-bridge.test.ts` - Added malformed manifest privacy regression.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T006 complete.

**BQC Fixes**:

* Trust boundary enforcement: regression asserts unsafe manifest entries do not cross into browser payloads.
* Error information boundaries: regression asserts bridge error payloads do not expose private roots or local env-like strings.

### Task T007 - Add source setup and scheduler status closeout regressions

**Started**: 2026-06-08 06:32 **Completed**: 2026-06-08 06:34 **Duration**: 2 minutes

**Notes**:

* Added source setup coverage for reviewed Product Hunt date targets, invalid target warnings, mutation rejection, repaired reviewed target values, and sanitized last-run health.
* Added scheduler status coverage that fails closed on unsafe latest-run trigger metadata and generated-data summaries.
* Fixed source setup diagnostic redaction so last-run health paths are redacted in addition to credential-shaped values.
* Hardened Trend Finder scheduler status projection by validating latest-run timestamps, trigger sources, duration, exit code, output existence, generated timestamp, age, and item count before browser exposure.
* Focused source setup and scheduler status test command passed after the redaction fix.

**Files Changed**:

* `scripts/extensions/trend-finder/sources/source-setup.ts` - Redacted private path-shaped values in setup diagnostics and last-run health messages.
* `scripts/extensions/trend-finder/sources/__tests__/source-setup.test.ts` - Added reviewed target validation and sanitized last-run health regression.
* `scripts/lib/trend-finder-scheduler-status.ts` - Added fail-closed latest-run metadata and generated-data projection guards.
* `scripts/lib/__tests__/trend-finder-scheduler-status.test.ts` - Added unsafe latest-run metadata regression.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T007 complete.

**BQC Fixes**:

* Error information boundaries: source setup health now redacts local paths as well as credentials.
* Trust boundary enforcement: scheduler status now validates latest-run metadata before projecting it to browser-safe status.

### Task T008 - Add Workbench and static Brief closeout regressions

**Started**: 2026-06-08 06:35 **Completed**: 2026-06-08 06:36 **Duration**: 1 minute

**Notes**:

* Added Workbench UI coverage for local triage hydration, row reset, run re-entry reload, and generated Watchlist separation.
* Added static Brief export coverage for deterministic dry-run output and rejection of local triage note and local path fields.
* Focused Workbench and static export test command passed.

**Files Changed**:

* `src/extensions/trend-finder/components/__tests__/signal-workbench-view.test.tsx` - Added local triage re-entry/reset regression.
* `scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts` - Added local triage privacy and deterministic dry-run regression.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T008 complete.

**BQC Fixes**:

* State freshness on re-entry: Workbench regression verifies local triage reloads on a new generated run key.
* Trust boundary enforcement: static Brief regression verifies local triage notes and private paths fail privacy validation before export.

### Task T009 - Create release-hardening matrix and dogfood plan

**Started**: 2026-06-08 06:37 **Completed**: 2026-06-08 06:37 **Duration**: 1 minute

**Notes**:

* Expanded the Session 09 implementation notes with a release-hardening matrix, dogfood route/command plan, command ledger, and expected privacy assertions.
* The plan covers source setup, run controls, live progress, Engine Replay, Workbench, Brief, static export, generated artifact checks, and privacy boundaries.

**Files Changed**:

* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/implementation-notes.md` - Added dogfood plan and expected privacy assertions.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T009 complete.

### Task T010 - Update complete Phase 24 fixtures

**Started**: 2026-06-08 06:37 **Completed**: 2026-06-08 06:39 **Duration**: 2 minutes

**Notes**:

* Added a complete Phase 24 release-hardening Trend Finder fixture covering configured source setup, completed live progress, scheduler success, Engine Replay, Workbench-ready topics, Brief data, static export data, spend, assets, enrichment, and generated-data timestamps.
* Added a missing-credential first-run Trend Finder fixture with blocked source setup, missing config, missing credentials, first-run scheduler state, and idle live progress.
* Added E2E live-data helpers for release-hardening live data and local-only Workbench triage state.
* Focused schema/dashboard fixture tests passed.

**Files Changed**:

* `src/extensions/trend-finder/fixtures.ts` - Added Phase 24 release-hardening and missing-credential fixture exports.
* `tests/e2e/fixtures/live-data.ts` - Added Phase 24 live-data and Workbench triage seeding helpers.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T010 complete.

**BQC Fixes**:

* Contract alignment: focused schema/dashboard tests validate the new fixture shapes against existing Trend Finder contracts.

### Task T011 - Create first-run browser dogfood proof

**Started**: 2026-06-08 06:39 **Completed**: 2026-06-08 06:49 **Duration**: 10 minutes

**Notes**:

* Added a browser release-hardening spec that starts from missing local source credentials, proves Source Setup and Scheduler first-run labels, triggers the run control route, and verifies completed Scheduler and Source Setup state.
* Covered Engine Replay stage labels, asset labels, Workbench local triage hydration, Brief rendering, local triage exclusion from generated output, and deterministic static Brief export privacy checks.
* Added explicit disabled/loading fallback, empty generated-data, runtime error redaction, and offline Engine Replay state coverage.
* Focused Playwright command passed.

**Files Changed**:

* `tests/e2e/trend-finder-release-hardening.spec.ts` - Added release-hardening browser proof and degraded state assertions.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T011 complete.

**BQC Fixes**:

* State freshness on re-entry: browser proof verifies a run action refreshes route data into the completed release-hardening fixture.
* Accessibility: Workbench assertions use accessible region names and textbox labels instead of incidental text.
* Failure paths: degraded browser states cover disabled/loading fallback, empty data, sanitized error, and offline states.
* Trust boundary enforcement: static export and Brief assertions verify local triage notes and private path-shaped content are not exposed.

### Task T012 - Expand Engine Replay browser proof

**Started**: 2026-06-08 06:49 **Completed**: 2026-06-08 06:55 **Duration**: 6 minutes

**Notes**:

* Added a Phase 24 Engine Replay browser regression using the release-hardening fixture.
* Verified deterministic stage controls, active region counts, mixed spend labels, cache saved labels, source-local ready/unavailable/excluded counters, asset manifest degraded counters, runtime token privacy labels, artifact writer timeline, and private-string redaction.
* Focused Engine Replay Playwright command passed.

**Files Changed**:

* `tests/e2e/trend-finder-engine-replay.spec.ts` - Added Phase 24 Engine Replay closeout coverage.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T012 complete.

**BQC Fixes**:

* State freshness: stage assertions verify playback state changes for evidence, runtime, and artifact stages.
* Contract alignment: assertions target browser-safe aggregate spend, cache, source-local, and asset labels rather than raw runtime details.
* Trust boundary enforcement: runtime and negative text assertions verify prompts, responses, local paths, and credential tokens remain hidden.

### Task T013 - Expand static Brief browser proof

**Started**: 2026-06-08 06:55 **Completed**: 2026-06-08 06:57 **Duration**: 2 minutes

**Notes**:

* Updated the static Brief browser proof to use the Phase 24 release-hardening fixture.
* Added deterministic HTML comparison across two exports with the same timestamp, all-link safety scanning, local triage/private string exclusions, and desktop/mobile overflow checks.
* Focused static Brief Playwright command passed.

**Files Changed**:

* `tests/e2e/trend-finder-static-brief.spec.ts` - Added deterministic export, link safety, privacy, and responsive overflow assertions.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T013 complete.

**BQC Fixes**:

* Trust boundary enforcement: browser scan rejects file, localhost, private-network, private cache, traversal, local triage, prompt, and credential-shaped output.
* Responsive stability: desktop and mobile static report scans verify no horizontal overflow.
* Contract alignment: deterministic export comparison verifies static report output remains stable for fixed input and timestamp.

### Task T014 - Extend private runtime artifact checks

**Started**: 2026-06-08 06:57 **Completed**: 2026-06-08 06:58 **Duration**: 1 minute

**Notes**:

* Added explicit Phase 24 private artifact examples for enrichment cache, evidence asset cache, static Brief report output, repo-local scheduler run state, scheduler lock, scheduler log, local scheduler config, and Trend Finder scheduler logs.
* Confirmed the checker still uses git ignore, tracked-file, and visible-status metadata only.
* Private runtime artifact check passed.

**Files Changed**:

* `scripts/check-private-runtime-artifacts.sh` - Extended metadata-only private artifact path list.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T014 complete.

**BQC Fixes**:

* Trust boundary enforcement: added concrete generated-cache and scheduler examples to prevent private runtime artifacts from becoming visible to git.

### Task T015 - Re-review source compliance

**Started**: 2026-06-08 06:58 **Completed**: 2026-06-08 07:00 **Duration**: 2 minutes

**Notes**:

* Re-reviewed source compliance docs for arXiv, GitHub, Hacker News, Product Hunt, Reddit, YouTube, RSS, Google Trends Demand, and Apify onboarding.
* Cross-checked implementation boundaries for public entity identity, promoted/pinned placement exclusions, evidence assets, reviewed setup targets, and spend labels.
* Created the Session 09 security-compliance closeout note with PASS findings and residual constraints for deferred direct adapters.

**Files Changed**:

* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/security-compliance.md` - Added Session 09 compliance closeout.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T015 complete.

**BQC Fixes**:

* Trust boundary enforcement: documented source, asset, target, spend, static export, and generated artifact privacy boundaries with concrete implementation evidence.

### Task T016 - Record folded Outlier source memo closeout state

**Started**: 2026-06-08 07:02 **Completed**: 2026-06-08 07:03 **Duration**: 1 minute

**Notes**:

* Added Phase 24 closeout evidence covering the folded Outlier source memo completion state, dogfood observations, Session 09 changed files, and residual risks.
* Added a Phase 24 PRD implementation closeout note without restoring the stale ongoing-project memo file or marking final validation complete before T017-T020.

**Files Changed**:

* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/implementation-notes.md` - Added folded memo state, dogfood observations, changed-file list, residual risks, and T016 log entry.
* `.spec_system/PRD/phase_24/PRD_phase_24.md` - Added Session 09 implementation closeout note.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T016 complete.

### Task T017 - Run focused Trend Finder regression suites

**Started**: 2026-06-08 07:03 **Completed**: 2026-06-08 07:04 **Duration**: 1 minute

**Notes**:

* Ran the combined focused Trend Finder regression command covering source-local signals, enrichment cache, spend accounting, evidence assets, static Brief export, source setup, asset bridge, scheduler status, Workbench, schema, and dashboard fixtures.
* Result: PASS, 11 test files and 160 tests passed.

**Files Changed**:

* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/implementation-notes.md` - Recorded focused regression gate result and T017 log entry.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T017 complete.

### Task T018 - Run relevant Trend Finder Playwright specs

**Started**: 2026-06-08 07:04 **Completed**: 2026-06-08 07:07 **Duration**: 3 minutes

**Notes**:

* Ran the combined Trend Finder Playwright gate for release hardening, Engine Replay, static Brief, and route smoke coverage.
* Initial result: FAIL, 15 of 16 tests passed. The saved Creator Lens route-smoke test expected the completed run message but did not mock `__run_trend_finder_status`, so the current live-progress polling contract correctly surfaced an unavailable-progress fallback.
* Fixed the route smoke mock to return a browser-safe completed progress payload from both `__run_trend_finder` and `__run_trend_finder_status`.
* Rerun result: PASS, 16 tests passed in 33.6 seconds.

**Files Changed**:

* `tests/e2e/trend-finder.spec.ts` - Updated the saved Creator Lens route-smoke test to mock the live-progress status endpoint.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/implementation-notes.md` - Recorded Playwright gate result and T018 log entry.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T018 complete.

**BQC Fixes**:

* Contract alignment: route smoke coverage now matches the current run-control live-progress endpoint contract.

### Task T019 - Run broad release gates

**Started**: 2026-06-08 07:07 **Completed**: 2026-06-08 07:09 **Duration**: 2 minutes

**Notes**:

* Ran the broad release gate cluster: full Vitest suite, app and script TypeScript checks, ESLint, Prettier check, production build, and private runtime artifact check.
* `bun run test` passed with 241 files and 3106 tests.
* `bun run typecheck` and `bun run typecheck:scripts` passed.
* Initial `bun run lint` and `bun run format:check` failed on Prettier formatting only; targeted Prettier cleanup was applied to the flagged files, then both gates passed.
* `bun run build` passed for client and SSR bundles.
* `bun run runtime:check-private` passed.

**Files Changed**:

* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/implementation-notes.md` - Recorded broad gate results and T019 log entry.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T019 complete.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/spec.md` - Formatted by targeted Prettier cleanup.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/security-compliance.md` - Formatted by targeted Prettier cleanup.
* `.spec_system/specs/phase24-session07-static-brief-export/IMPLEMENTATION_SUMMARY.md` - Formatted by targeted Prettier cleanup so `format:check` passes.
* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/security-compliance.md` - Formatted by targeted Prettier cleanup so `format:check` passes.
* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/spec.md` - Formatted by targeted Prettier cleanup so `format:check` passes.
* Phase 24 source/test files flagged by Prettier - Formatting only; no behavioral changes.

### Task T020 - Validate final handoff checks

**Started**: 2026-06-08 07:09 **Completed**: 2026-06-08 07:10 **Duration**: 1 minute

**Notes**:

* Ran `git diff --check`; result PASS with no whitespace errors.
* Ran `bun run runtime:check-private`; result PASS.
* Ran final `bun run format:check`; result PASS.
* Ran ASCII and LF scans across touched text files; result PASS for both.
* Verified `implementation-notes.md` and `security-compliance.md` are present and non-empty.
* Captured a final `git status --short` snapshot; the worktree remains dirty with Phase 24 and prior phase/session files, plus the new Session 09 files. No private runtime artifact was exposed.

**Files Changed**:

* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/implementation-notes.md` - Recorded final handoff checks and T020 log entry.
* `.spec_system/specs/phase24-session09-end-to-end-validation-release-hardening/tasks.md` - Marked T020 complete and updated the completion checklist.


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