> 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_summary.md).

# Implementation Summary

**Session ID**: `phase28-session06-lifecycle-multiplier-and-named-contributions` **Completed**: 2026-06-14 **Duration**: 1 hour

***

## Overview

Completed Phase 28 Session 06 by adding bounded lifecycle and signal-aging score movement plus an ordered named-contribution layer for post-factor score changes. Confidence dampener, lifecycle multiplier, and topic noise downrank now publish browser-safe adjustment rows that reconcile the raw weighted score to the final score, while the six-factor core weights and legacy compatibility fields remain unchanged.

***

## Deliverables

### Files Created

| File                                                                                                          | Purpose                                                                                                 | Lines |
| ------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------- | ----- |
| `scripts/lib/ai-runtime/__tests__/score-adjustments.test.ts`                                                  | Unit tests for lifecycle multiplier bounds, adjustment ordering, reconciliation, and vocabulary leakage | 125   |
| `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/spec.md`                   | Session specification                                                                                   | 391   |
| `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/tasks.md`                  | Session task checklist                                                                                  | 97    |
| `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/implementation-notes.md`   | Implementation and validation notes                                                                     | 634   |
| `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/security-compliance.md`    | Security and GDPR review                                                                                | 92    |
| `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/validation.md`             | Validation report                                                                                       | 265   |
| `.spec_system/specs/phase28-session06-lifecycle-multiplier-and-named-contributions/IMPLEMENTATION_SUMMARY.md` | Session closeout summary                                                                                | \~120 |

### Files Modified

| File                                                                                   | Changes                                                                                                                                                                           |
| -------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `scripts/lib/ai-runtime/scoring.ts`                                                    | Added lifecycle multiplier helpers, named score-adjustment rows, raw-to-final reconciliation, topic-noise row migration, and scoring version bump to `trend-finder-scoring-v28.6` |
| `scripts/lib/ai-runtime/signal-aging.ts`                                               | Applied validation-time formatting cleanup                                                                                                                                        |
| `scripts/lib/ai-runtime/__tests__/scoring.test.ts`                                     | Added named-adjustment integration coverage for ordering, reconciliation, unchanged factor keys, and idempotency                                                                  |
| `scripts/lib/ai-runtime/__tests__/scoring-calibration.test.ts`                         | Updated calibration expectations for compatibility fields, named rows, multiplier clamps, and v28.6                                                                               |
| `src/extensions/trend-finder/schema.ts`                                                | Added bounded adjustment enums, row schema, defaults, catches, and topic parsing                                                                                                  |
| `src/lib/__tests__/trend-finder-schema.test.ts`                                        | Added legacy, invalid-row, bounded-label, bounded-delta, and compatibility tests                                                                                                  |
| `src/extensions/trend-finder/view-model.ts`                                            | Added adjustment row projection, tones, labels, summary copy, redaction, and topic card plumbing                                                                                  |
| `src/extensions/trend-finder/__tests__/view-model.test.ts`                             | Added projection, ordering, tone, bounded text, redaction, and empty-state coverage                                                                                               |
| `src/extensions/trend-finder/components/score-breakdown.tsx`                           | Rendered accessible score-adjustment rows and empty states in compact and full layouts                                                                                            |
| `src/extensions/trend-finder/components/__tests__/score-breakdown.test.tsx`            | Added adjustment rendering, compact, accessibility, and legacy empty-state tests                                                                                                  |
| `src/extensions/trend-finder/engine-replay-model.ts`                                   | Added Engine Replay adjustment summaries and trace-only fallback states                                                                                                           |
| `src/extensions/trend-finder/components/engine-score-panel.tsx`                        | Rendered Engine Replay named adjustments with bounded labels and tones                                                                                                            |
| `src/lib/__tests__/trend-finder-engine-replay.test.tsx`                                | Added named contribution and sanitized score-proof coverage                                                                                                                       |
| `src/extensions/trend-finder/fixtures.ts`                                              | Added representative confidence, lifecycle, topic-noise, and empty adjustment rows                                                                                                |
| `src/extensions/trend-finder/components/trend-card.tsx`                                | Passed score-adjustment summaries into Score Breakdown                                                                                                                            |
| `src/extensions/trend-finder/components/signal-radar.tsx`                              | Passed score-adjustment summaries into Score Breakdown                                                                                                                            |
| `src/extensions/trend-finder/views/hidden-gems-view.tsx`                               | Passed hidden-gem adjustment summaries into Score Breakdown                                                                                                                       |
| `src/extensions/trend-finder/views/watchlist-view.tsx`                                 | Passed watchlist adjustment summaries into Score Breakdown                                                                                                                        |
| `src/lib/__tests__/trend-finder-dashboard.test.tsx`                                    | Updated direct TopicCard fixture data for the new field                                                                                                                           |
| `docs/extensions/trend-finder-scoring.md`                                              | Documented post-factor adjustments, lifecycle multiplier behavior, compatibility fields, and non-goals                                                                            |
| `.spec_system/state.json`                                                              | Marked Session 06 complete and cleared the active session                                                                                                                         |
| `.spec_system/PRD/phase_28/PRD_phase_28.md`                                            | Updated Phase 28 progress to 6/15 sessions                                                                                                                                        |
| `.spec_system/PRD/phase_28/session_06_lifecycle_multiplier_and_named_contributions.md` | Marked the session complete                                                                                                                                                       |
| `package.json`                                                                         | Bumped package version from `0.1.323` to `0.1.324`                                                                                                                                |
| `README.md`                                                                            | Updated version line to `0.1.324`                                                                                                                                                 |
| `docs/CHANGELOG.md`                                                                    | Added the Session 06 release entry                                                                                                                                                |

***

## Technical Decisions

1. **Narrow Trend Finder multiplier**: Lifecycle movement stays in the 0.85-1.05 starter band and uses Trend Finder stages plus signal-aging status, avoiding a second lifecycle taxonomy.
2. **Named rows as display truth**: `scoreAdjustments` explains the full raw-to-final score gap while `rawOpportunityScore`, `sampleConfidence`, `confidenceDampenerDelta`, and `topicNoiseDownrank` remain for compatibility.
3. **Single-pass score pipeline**: Lifecycle is derived before final scoring and final score is reconciled once, avoiding circular movement updates.

***

## Test Results

| Metric   | Value         |
| -------- | ------------- |
| Tests    | 3543          |
| Passed   | 3543          |
| Coverage | Not collected |

Final validation commands:

* `bun run typecheck` - PASS.
* `bun run typecheck:scripts` - PASS.
* `bun run lint` - PASS.
* `bun run test` - PASS, 291 files / 3543 tests.
* `bun run build` - PASS.
* `git diff --check` - PASS.
* ASCII and LF scans - PASS.
* Fixture-backed browser smoke for Hidden Gems and Engine Replay - PASS.

***

## Lessons Learned

1. Post-factor score movement needs named rows as soon as multiple adjustments can affect rank, or operators cannot audit raw-to-final changes.
2. Lifecycle score feedback should stay narrow and taxonomy-neutral until later action layers prove a wider band is useful.
3. Engine Replay and the card score breakdown should share bounded projection helpers so browser-visible scoring proof stays consistent.

***

## Future Considerations

Items for future sessions:

1. Session 07 should consume named rows and signal-aging fields without adding storage or source changes outside its retention scope.
2. Session 08 should use the reconciled score and named adjustments when deriving action verdicts and consistency QA.
3. Session 15 should include named adjustments in the final Trend Finder documentation and release validation coverage.

***

## Session Statistics

* **Tasks**: 23 completed
* **Files Created**: 7
* **Files Modified**: 26
* **Tests Added**: 7 files
* **Blockers**: 0 resolved


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