> 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/phase28-session06-lifecycle-multiplier-and-named-contributions/implementation-notes.md).

# Implementation Notes

**Session ID**: `phase28-session06-lifecycle-multiplier-and-named-contributions` **Started**: 2026-06-14 05:01 **Last Updated**: 2026-06-14 05:35

***

## Session Progress

| Metric              | Value   |
| ------------------- | ------- |
| Tasks Completed     | 23 / 23 |
| Estimated Remaining | 0 hours |
| Blockers            | 0       |

***

## Multiplier Constants

* Starter lifecycle multiplier band: 0.85-1.05.
* Adjustment order: confidence dampener, lifecycle multiplier, topic noise downrank.
* Score math keeps six-factor weights unchanged; post-factor rows explain the raw-to-final gap.
* Trend Finder payload vocabulary remains the Phase 27 lifecycle taxonomy only: `unknown`, `whisper`, `builder`, `creator`, and `saturated`.

***

## Source Mapping

* Trends-Finderz `Dormant`, `Stale`, `Cooling`, `Peaking`, `Accelerating`, and `Emerging` labels are calibration fixtures only.
* Trend Finder source targets verified before code edits:
  * `scripts/lib/ai-runtime/scoring.ts`
  * `src/extensions/trend-finder/schema.ts`
  * `src/extensions/trend-finder/view-model.ts`
  * `src/extensions/trend-finder/engine-replay-model.ts`
  * `src/extensions/trend-finder/components/score-breakdown.tsx`
  * `src/extensions/trend-finder/components/engine-score-panel.tsx`
  * `src/extensions/trend-finder/fixtures.ts`
  * Focused tests under existing script, schema, view-model, component, and Engine Replay test paths.

***

## Validation Commands

* `bun run typecheck`
* `bun run typecheck:scripts`
* `bunx vitest run scripts/lib/ai-runtime/__tests__/score-adjustments.test.ts scripts/lib/ai-runtime/__tests__/scoring.test.ts scripts/lib/ai-runtime/__tests__/scoring-calibration.test.ts src/lib/__tests__/trend-finder-schema.test.ts src/extensions/trend-finder/__tests__/view-model.test.ts src/extensions/trend-finder/components/__tests__/score-breakdown.test.tsx src/lib/__tests__/trend-finder-engine-replay.test.tsx`
* `rg -n "planned|will|TODO|future" docs/extensions/trend-finder-scoring.md`
* `files=$( (git diff --name-only -- .; git ls-files --others --exclude-standard .spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions) | sort -u ); if [ -n "$files" ]; then rg --pcre2 -n "[^\x00-\x7F]" $files || true; fi`
* `bunx prettier --write` on touched session files.
* `VITE_CLAUDE_OS_ENABLED_EXTENSIONS=trend-finder bunx vite dev --host 127.0.0.1 --port 5189`
* Fixture-backed Playwright smoke for Hidden Gems and Engine Replay score surfaces.

***

## Residual Risks

* No implementation residual risks remain.
* The validate workflow step remains next.

***

## Design Decisions

### Decision 1: Keep lifecycle multiplier narrow and Trend Finder-native

**Context**: Trends-Finderz applies much wider lifecycle score movement and uses a different lifecycle vocabulary.

**Options Considered**:

1. Copy the reference multiplier range - large ranking movement, but violates the session band and leaks an incompatible taxonomy.
2. Calibrate a narrow Trend Finder multiplier - smaller movement, but keeps scores explainable and compatible with Phase 27 lifecycle stages.

**Chosen**: Calibrate a narrow 0.85-1.05 Trend Finder multiplier.

**Rationale**: The phase goal is auditable post-factor movement, not a new lifecycle taxonomy or broad ranking rewrite.

### Decision 2: Derive lifecycle before final post-factor score

**Context**: Lifecycle derivation can use movement status, but movement status also depends on final score.

**Options Considered**:

1. Recompute lifecycle after final score - may create circular score movement.
2. Use the post-confidence preliminary movement - deterministic, single-pass, and avoids repeated final-score recomputation.

**Chosen**: Use post-confidence preliminary movement for lifecycle derivation, then compute final score once.

**Rationale**: The final score remains deterministic, rows reconcile cleanly, and final movement flags still use the final adjusted score.

### Decision 3: Keep compatibility fields while making rows display truth

**Context**: Existing consumers read `rawOpportunityScore`, `sampleConfidence`, `confidenceDampenerDelta`, and `topicNoiseDownrank`.

**Options Considered**:

1. Replace compatibility fields with only `scoreAdjustments` - cleaner payload, but breaks legacy consumers.
2. Add `scoreAdjustments` while preserving compatibility fields - slightly redundant, but safe.

**Chosen**: Preserve compatibility fields and render named rows from `scoreAdjustments`.

**Rationale**: This satisfies the session contract without schema drift or legacy breakage.

***

## Task Log

### 2026-06-14 - Session Start

**Environment verified**:

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

***

### Task T001 - Verify prerequisite sessions, source mapping, and current target-file paths

**Started**: 2026-06-14 05:00 **Completed**: 2026-06-14 05:01 **Duration**: 1 minute

**Notes**:

* Ran project analysis and prerequisite checks from the local `.spec_system/scripts` directory.
* Verified current session is `phase28-session06-lifecycle-multiplier-and-named-contributions`.
* Read the session PRD source mapping and relevant Trend Finder extension ADRs.
* Noted that the phase PRD prerequisite checkboxes are stale, while the session spec and project state show sessions 03-05 completed.

**Files Changed**:

* `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/tasks.md` - marked T001 complete and updated progress.

### Task T002 - Create implementation-notes shell

**Started**: 2026-06-14 05:01 **Completed**: 2026-06-14 05:01 **Duration**: 1 minute

**Notes**:

* Created the implementation notes shell with multiplier constants, adjustment ordering, validation placeholders, and source-mapping decisions.

**Files Changed**:

* `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/implementation-notes.md` - created session implementation log.

### Task T003 - Compare Trends-Finderz lifecycle multipliers and scoring transparency fields

**Started**: 2026-06-14 05:01 **Completed**: 2026-06-14 05:02 **Duration**: 1 minute

**Notes**:

* Reviewed `EXAMPLES/trends-finderz/lib/trends/lifecycle.ts`, `EXAMPLES/trends-finderz/lib/product/intelligence-scoring.ts`, and `EXAMPLES/trends-finderz/lib/trends/scoring-transparency.ts`.
* Trends-Finderz uses a wide multiplier range from 0.55 to 1.08; this session keeps Trend Finder inside the approved 0.85-1.05 starter band.
* Trends-Finderz publishes free-text positive and negative driver arrays; this session uses bounded `{label, delta, kind}` adjustment rows instead.
* Trends-Finderz lifecycle labels remain calibration-only and must not appear in Trend Finder payloads, fixtures, or UI.

**Files Changed**:

* `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/implementation-notes.md` - recorded calibration comparison and vocabulary decision.

### Task T004 - Define additive score-adjustment schema

**Started**: 2026-06-14 05:03 **Completed**: 2026-06-14 05:05 **Duration**: 2 minutes

**Notes**:

* Added enum-backed adjustment keys and impact kinds.
* Added bounded label, detail, delta, multiplier, and row-count limits.
* Added `scoreAdjustments` to Trend Finder topics with default/catch behavior so legacy payloads parse to an empty list.

**Files Changed**:

* `src/extensions/trend-finder/schema.ts` - added score-adjustment constants, schema, type exports, topic field, and legacy-safe defaults.

**BQC Fixes**:

* Trust boundary enforcement: adjustment rows now pass through bounded Zod parsing before browser rendering (`src/extensions/trend-finder/schema.ts`).

### Task T005 - Add pure lifecycle multiplier and score-adjustment reconciliation helpers

**Started**: 2026-06-14 05:05 **Completed**: 2026-06-14 05:07 **Duration**: 2 minutes

**Notes**:

* Added the 0.85-1.05 lifecycle multiplier band and Trend Finder stage/status calibration maps.
* Added pure lifecycle multiplier application with neutral defaults for malformed lifecycle or aging input.
* Added score-adjustment row construction, deterministic ordering, and final-score reconciliation helpers.
* Kept topic-noise score adjustment calculation pure while preserving the existing fallback caps.

**Files Changed**:

* `scripts/lib/ai-runtime/scoring.ts` - added lifecycle multiplier, adjustment row, ordering, reconciliation, and topic-noise adjustment helpers.

**BQC Fixes**:

* Trust boundary enforcement: lifecycle stages and aging statuses are validated against exported Trend Finder enum constants before score math (`scripts/lib/ai-runtime/scoring.ts`).
* Contract alignment: reconciliation returns rows whose deltas match the raw-to-final score gap after rounding (`scripts/lib/ai-runtime/scoring.ts`).

## Validation Results

* `bun run typecheck:scripts` - pass.

### Task T006 - Add score-adjustment unit tests

**Started**: 2026-06-14 05:06 **Completed**: 2026-06-14 05:07 **Duration**: 1 minute

**Notes**:

* Added focused unit coverage for lifecycle multiplier bounds, malformed defaults, rounded deltas, adjustment ordering, reconciliation, bounded row text, and vocabulary leakage.

**Files Changed**:

* `scripts/lib/ai-runtime/__tests__/score-adjustments.test.ts` - created focused score-adjustment helper coverage.

**BQC Fixes**:

* Contract alignment: tests assert row ordering and raw-to-final reconciliation behavior (`scripts/lib/ai-runtime/__tests__/score-adjustments.test.ts`).

## Validation Results

* `bunx vitest run scripts/lib/ai-runtime/__tests__/score-adjustments.test.ts` - pass, 6 tests.

### Task T007 - Add score-adjustment view-model helpers

**Started**: 2026-06-14 05:07 **Completed**: 2026-06-14 05:08 **Duration**: 1 minute

**Notes**:

* Added shared adjustment row and summary view models.
* Added bounded labels/details, delta labels, tones, multiplier labels, deterministic ordering, empty state, and raw-to-final summary copy.

**Files Changed**:

* `src/extensions/trend-finder/view-model.ts` - added score-adjustment projection helpers and exported view-model types.

**BQC Fixes**:

* Error information boundaries: projection limits browser-visible labels and details before rendering (`src/extensions/trend-finder/view-model.ts`).
* Accessibility and platform compliance: generated ARIA labels summarize bounded row content (`src/extensions/trend-finder/view-model.ts`).

## Validation Results

* `bun run typecheck` - pass.

### Task T008 - Add Engine Replay adjustment view-model builders

**Started**: 2026-06-14 05:08 **Completed**: 2026-06-14 05:09 **Duration**: 1 minute

**Notes**:

* Added an adjustment summary to the Engine Replay score-panel view model.
* Added explicit empty summaries for no-topic and trace-only fallback panels.
* Wired scored topics to the shared score-adjustment projection.

**Files Changed**:

* `src/extensions/trend-finder/engine-replay-model.ts` - added adjustment summary field and builders.

**BQC Fixes**:

* Contract alignment: all Engine Replay score-panel states now return the same adjustment-summary shape (`src/extensions/trend-finder/engine-replay-model.ts`).

## Validation Results

* `bun run typecheck` - pass.

### Task T009 - Update fixtures with representative adjustment rows

**Started**: 2026-06-14 05:09 **Completed**: 2026-06-14 05:11 **Duration**: 2 minutes

**Notes**:

* Added representative confidence dampener, lifecycle multiplier, and topic noise rows to fixture topics.
* Added an explicit empty `scoreAdjustments` fixture for legacy empty-state coverage.
* Corrected fixture multiplier values to stay within the 0.85-1.05 session band.

**Files Changed**:

* `src/extensions/trend-finder/fixtures.ts` - added representative named score adjustments and compatibility score fields.

**BQC Fixes**:

* Contract alignment: fixture raw scores, final scores, and adjustment deltas reconcile for representative rows (`src/extensions/trend-finder/fixtures.ts`).

## Validation Results

* `bun run typecheck` - pass.

### Task T010 - Wire confidence dampener into named contribution rows

**Started**: 2026-06-14 05:11 **Completed**: 2026-06-14 05:14 **Duration**: 3 minutes

**Notes**:

* Added `calculatePostFactorScoreAdjustments` to publish confidence dampener rows while preserving `rawOpportunityScore`, `sampleConfidence`, and `confidenceDampenerDelta`.
* The confidence row uses the existing dampener math and multiplier.

**Files Changed**:

* `scripts/lib/ai-runtime/scoring.ts` - wired confidence dampener rows into generated topics.

**BQC Fixes**:

* Contract alignment: compatibility fields remain present while `scoreAdjustments` becomes the display source for post-factor rows (`scripts/lib/ai-runtime/scoring.ts`).

### Task T011 - Apply lifecycle and signal-aging multiplier

**Started**: 2026-06-14 05:11 **Completed**: 2026-06-14 05:14 **Duration**: 3 minutes

**Notes**:

* Derived lifecycle once before final scoring using the post-confidence preliminary movement, avoiding circular final-score recomputation.
* Applied the lifecycle multiplier after confidence calibration and before topic-noise adjustment.
* The multiplier remains clamped to 0.85-1.05 and defaults to neutral for unavailable inputs.

**Files Changed**:

* `scripts/lib/ai-runtime/scoring.ts` - wired lifecycle multiplier rows into generated topics.

**BQC Fixes**:

* Duplicate action prevention: final score computation now runs through one pure post-factor pipeline rather than repeated score recomputation (`scripts/lib/ai-runtime/scoring.ts`).

### Task T012 - Wire topic noise downrank into named contribution rows

**Started**: 2026-06-14 05:11 **Completed**: 2026-06-14 05:14 **Duration**: 3 minutes

**Notes**:

* Added topic-noise rows after lifecycle adjustment while preserving fallback-mode caps and `topicNoiseDownrank`.
* The row delta captures the actual final score movement, including fallback caps when they apply.

**Files Changed**:

* `scripts/lib/ai-runtime/scoring.ts` - wired topic-noise downrank rows into generated topics.

**BQC Fixes**:

* Failure path completeness: topic quality fallback paths still use neutral visibility fields when quality derivation fails (`scripts/lib/ai-runtime/scoring.ts`).

## Validation Results

* `bun run typecheck:scripts` - pass.
* `bunx vitest run scripts/lib/ai-runtime/__tests__/score-adjustments.test.ts` - pass, 6 tests.

### Task T013 - Bump scoring version

**Started**: 2026-06-14 05:14 **Completed**: 2026-06-14 05:15 **Duration**: 1 minute

**Notes**:

* Bumped `SCORING_VERSION` from `trend-finder-scoring-v28.5` to `trend-finder-scoring-v28.6` for the named-adjustment and lifecycle multiplier score math change.
* Existing scoring-version comparison fields remain unchanged so cross-version movement flags still surface.

**Files Changed**:

* `scripts/lib/ai-runtime/scoring.ts` - updated scoring version constant.

**BQC Fixes**:

* Contract alignment: version comparison behavior continues to use the existing comparison helper and topic compatibility field (`scripts/lib/ai-runtime/scoring.ts`).

## Validation Results

* `bun run typecheck:scripts` - pass.

### Task T014 - Render adjustment rows in Score Breakdown

**Started**: 2026-06-14 05:15 **Completed**: 2026-06-14 05:18 **Duration**: 3 minutes

**Notes**:

* Added optional adjustment summary rendering below confidence context in Score Breakdown.
* Added compact and non-compact row layouts, explicit empty state, bounded row titles/details, and ARIA group labels.
* Passed adjustment summaries from topic cards, signal radar, hidden gems, and watchlist surfaces.

**Files Changed**:

* `src/extensions/trend-finder/components/score-breakdown.tsx` - renders score-adjustment rows and empty state.
* `src/extensions/trend-finder/components/trend-card.tsx` - passes topic adjustment summary.
* `src/extensions/trend-finder/components/signal-radar.tsx` - passes topic adjustment summary.
* `src/extensions/trend-finder/views/hidden-gems-view.tsx` - passes hidden-gem adjustment summary.
* `src/extensions/trend-finder/views/watchlist-view.tsx` - passes watchlist topic adjustment summary.
* `src/extensions/trend-finder/view-model.ts` - exposes adjustment summary on topic card view models.
* `src/lib/__tests__/trend-finder-dashboard.test.tsx` - updates direct TopicCard test fixture for the new field.

**BQC Fixes**:

* Accessibility and platform compliance: adjustment rows render inside an ARIA-labeled group with per-row labels (`src/extensions/trend-finder/components/score-breakdown.tsx`).
* State freshness on re-entry: adjustment projection is derived from the current topic payload at each render call site (`src/extensions/trend-finder/views/watchlist-view.tsx`).

## Validation Results

* `bun run typecheck` - pass.

### Task T015 - Render adjustment rows in Engine Replay scoring proof

**Started**: 2026-06-14 05:18 **Completed**: 2026-06-14 05:20 **Duration**: 2 minutes

**Notes**:

* Added a named-adjustments section to Engine Replay scoring proof.
* The section renders summary, total delta, explicit empty state, row labels, deltas, tones, and bounded details.
* Rows are static and do not add motion beyond the existing panel replay state.

**Files Changed**:

* `src/extensions/trend-finder/components/engine-score-panel.tsx` - renders Engine Replay named adjustment rows.

**BQC Fixes**:

* Accessibility and platform compliance: Engine Replay adjustments render in an ARIA-labeled group with row labels (`src/extensions/trend-finder/components/engine-score-panel.tsx`).
* Error information boundaries: rendered details come from bounded view-model projection and do not expose raw payloads (`src/extensions/trend-finder/components/engine-score-panel.tsx`).

## Validation Results

* `bun run typecheck` - pass.

### Task T016 - Update schema validation tests

**Started**: 2026-06-14 05:20 **Completed**: 2026-06-14 05:21 **Duration**: 1 minute

**Notes**:

* Added schema coverage for valid adjustment rows, stripped unknown fields, legacy empty defaults, invalid-row fallback, row bounds, and compatibility fields.

**Files Changed**:

* `src/lib/__tests__/trend-finder-schema.test.ts` - added score-adjustment schema coverage.

**BQC Fixes**:

* Trust boundary enforcement: tests assert invalid adjustment payloads cannot pass through topic parsing (`src/lib/__tests__/trend-finder-schema.test.ts`).

## Validation Results

* `bunx vitest run src/lib/__tests__/trend-finder-schema.test.ts` - pass, 107 tests.

### Task T017 - Update Trend Finder scoring documentation

**Started**: 2026-06-14 05:21 **Completed**: 2026-06-14 05:23 **Duration**: 2 minutes

**Notes**:

* Documented post-factor adjustment order, `scoreAdjustments`, compatibility fields, confidence dampener, lifecycle multiplier, topic-noise downrank, and non-goals.
* Updated signal-aging wording now that aging participates in final ranking through the bounded lifecycle multiplier.
* Verified the scoring doc does not include planned/future wording.

**Files Changed**:

* `docs/extensions/trend-finder-scoring.md` - documented lifecycle multiplier and named score contributions.

**BQC Fixes**:

* Contract alignment: docs now match the generated payload fields and compatibility contract (`docs/extensions/trend-finder-scoring.md`).

## Validation Results

* `rg -n "planned|will|TODO|future" docs/extensions/trend-finder-scoring.md` - no matches.

### Task T018 - Record implementation decisions and residual risks

**Started**: 2026-06-14 05:23 **Completed**: 2026-06-14 05:24 **Duration**: 1 minute

**Notes**:

* Replaced placeholder validation commands with commands already run and remaining checks.
* Recorded residual risk as remaining T019-T023 validation work with no user-input blocker.
* Added design decisions for multiplier calibration, lifecycle derivation order, and compatibility-field preservation.

**Files Changed**:

* `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/implementation-notes.md` - recorded decisions, validation state, and residual risks.

### Task T019 - Add scoring integration tests

**Started**: 2026-06-14 05:24 **Completed**: 2026-06-14 05:25 **Duration**: 1 minute

**Notes**:

* Updated scoring integration coverage for v28.6, named adjustment ordering, raw-to-final reconciliation, unchanged six-factor keys, vocabulary leakage, and repeated scoring idempotency.

**Files Changed**:

* `scripts/lib/ai-runtime/__tests__/scoring.test.ts` - added named-adjustment integration assertions.

**BQC Fixes**:

* Contract alignment: tests assert final topic score is reconciled by named adjustment deltas (`scripts/lib/ai-runtime/__tests__/scoring.test.ts`).

### Task T020 - Add calibration tests

**Started**: 2026-06-14 05:24 **Completed**: 2026-06-14 05:25 **Duration**: 1 minute

**Notes**:

* Updated calibration coverage for expected scoring version, compatibility fields, score-adjustment rows, topic-noise row migration, and lifecycle multiplier bounds.

**Files Changed**:

* `scripts/lib/ai-runtime/__tests__/scoring-calibration.test.ts` - updated version and named-row calibration assertions.

**BQC Fixes**:

* Contract alignment: tests assert compatibility fields remain alongside named rows (`scripts/lib/ai-runtime/__tests__/scoring-calibration.test.ts`).

## Validation Results

* `bunx vitest run scripts/lib/ai-runtime/__tests__/scoring.test.ts` - pass, 35 tests.
* `bunx vitest run scripts/lib/ai-runtime/__tests__/scoring-calibration.test.ts` - pass, 4 tests.

### Task T021 - Add view-model and Score Breakdown component tests

**Started**: 2026-06-14 05:26 **Completed**: 2026-06-14 05:28 **Duration**: 2 minutes

**Notes**:

* Added view-model coverage for adjustment ordering, labels, tones, raw-to-final summary, bounded text, secret redaction, and empty states.
* Added Score Breakdown component coverage for named rows, compact rendering, accessibility labels, and legacy empty adjustment state.

**Files Changed**:

* `src/extensions/trend-finder/__tests__/view-model.test.ts` - added score-adjustment projection tests.
* `src/extensions/trend-finder/components/__tests__/score-breakdown.test.tsx` - added score-adjustment rendering tests.

**BQC Fixes**:

* Accessibility and platform compliance: tests assert Score Breakdown adjustment group labels (`src/extensions/trend-finder/components/__tests__/score-breakdown.test.tsx`).
* Error information boundaries: tests assert secret-like text is redacted from projected adjustment details (`src/extensions/trend-finder/__tests__/view-model.test.ts`).

## Validation Results

* `bunx vitest run src/extensions/trend-finder/__tests__/view-model.test.ts` - pass, 37 tests.
* `bunx vitest run src/extensions/trend-finder/components/__tests__/score-breakdown.test.tsx` - pass, 5 tests.

### Task T022 - Add Engine Replay tests

**Started**: 2026-06-14 05:28 **Completed**: 2026-06-14 05:29 **Duration**: 1 minute

**Notes**:

* Added Engine Replay model assertions for adjustment counts and trace-only empty fallback.
* Added rendered score-proof assertions for named contributions and private-path sanitization.

**Files Changed**:

* `src/lib/__tests__/trend-finder-engine-replay.test.tsx` - added named contribution and sanitized proof coverage.

**BQC Fixes**:

* Error information boundaries: tests assert private raw data paths do not render in the score proof (`src/lib/__tests__/trend-finder-engine-replay.test.tsx`).

## Validation Results

* `bunx vitest run src/lib/__tests__/trend-finder-engine-replay.test.tsx` - pass, 20 tests.

### Task T023 - Run focused tests, ASCII validation, and manual checks

**Started**: 2026-06-14 05:29 **Completed**: 2026-06-14 05:35 **Duration**: 6 minutes

**Notes**:

* Ran final typechecks, focused Vitest coverage, ASCII validation, formatting, and browser smoke checks.
* Re-ran typechecks, focused tests, and ASCII validation after Prettier changed files.
* Verified Hidden Gems renders score adjustments, confidence dampener, lifecycle multiplier, and topic noise downrank through fixture-backed live data.
* Verified Engine Replay renders scoring proof, named adjustments, confidence dampener, lifecycle multiplier, and topic noise downrank through fixture-backed live data.
* Stopped the temporary Vite dev server after browser smoke checks.

**Files Changed**:

* `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/implementation-notes.md` - recorded final verification results and residual risk status.
* `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/tasks.md` - marked final task and completion checklist complete.

**BQC Fixes**:

* Verification completeness: final checks cover runtime scoring, schema parsing, UI projections, component rendering, Engine Replay proof output, formatting, and ASCII encoding.

## Validation Results

* `bun run typecheck` - pass.
* `bun run typecheck:scripts` - pass.
* Focused Vitest command - pass, 7 files and 214 tests.
* ASCII validation over touched and untracked session files - pass, no non-ASCII output.
* `bunx prettier --write` over touched session files - completed.
* Post-format `bun run typecheck` - pass.
* Post-format `bun run typecheck:scripts` - pass.
* Post-format focused Vitest command - pass, 7 files and 214 tests.
* Post-format ASCII validation - pass, no non-ASCII output.
* Browser smoke for Hidden Gems and Engine Replay with fixture-backed `/__live-data` - pass.


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