> 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-session13-keyword-packs-rotation-and-coverage/implementation_summary.md).

# Implementation Summary

**Session ID**: `phase28-session13-keyword-packs-rotation-and-coverage` **Completed**: 2026-06-14 **Duration**: 1 hour

***

## Overview

Phase 28 Session 13 added reviewed keyword packs, balanced and focused scan modes, deterministic stable-core plus rotating-tail keyword windows, and per-source compilation into reviewed Apify query fields. The work preserves existing source caps, charge ceilings, spend labels, and the no-free-text source setup boundary.

Keyword-window summaries now flow through collection, source setup state, sanitized engine trace evidence, frontend schema defaults, Source Setup coverage QA, and movement analysis. Rotated-out prior topics are treated as not scanned instead of normal cooling.

***

## Deliverables

### Files Created

| File                                                                                                 | Purpose                                                                                             | Lines |
| ---------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------- | ----- |
| `.spec_system/specs/phase28-session13-keyword-packs-rotation-and-coverage/spec.md`                   | Session specification.                                                                              | 368   |
| `.spec_system/specs/phase28-session13-keyword-packs-rotation-and-coverage/tasks.md`                  | Session task checklist.                                                                             | 99    |
| `.spec_system/specs/phase28-session13-keyword-packs-rotation-and-coverage/implementation-notes.md`   | Implementation log, decisions, validation commands, and task record.                                | 610   |
| `.spec_system/specs/phase28-session13-keyword-packs-rotation-and-coverage/security-compliance.md`    | Security and GDPR review report.                                                                    | 87    |
| `.spec_system/specs/phase28-session13-keyword-packs-rotation-and-coverage/validation.md`             | Validation report and quality gate evidence.                                                        | 258   |
| `.spec_system/specs/phase28-session13-keyword-packs-rotation-and-coverage/IMPLEMENTATION_SUMMARY.md` | Session closeout summary.                                                                           | 135   |
| `scripts/extensions/trend-finder/sources/keyword-packs.ts`                                           | Reviewed categories, scan mode parsing, rotation, source caps, compilation, and coverage summaries. | 925   |
| `scripts/extensions/trend-finder/sources/__tests__/keyword-packs.test.ts`                            | Keyword-pack unit coverage for parsing, category validation, caps, rotation, and coverage.          | 223   |
| `src/extensions/trend-finder/components/keyword-coverage-summary.tsx`                                | Read-only Source Setup keyword coverage summary.                                                    | 116   |
| `src/extensions/trend-finder/components/__tests__/keyword-coverage-summary.test.tsx`                 | Component coverage for ready/review/thin, empty, and focused states.                                | 136   |

### Files Modified

| File                                                                            | Changes                                                                                                           |
| ------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------- |
| `docs/sources/apify-source-onboarding.md`                                       | Recorded the keyword-pack compliance gate, reviewed query fields, and no-free-text rule.                          |
| `docs/extensions/trend-finder-sources.md`                                       | Documented scan modes, keyword rotation, source caps, coverage QA, env keys, and spend preservation.              |
| `scripts/extensions/trend-finder/sources/types.ts`                              | Added keyword window, coverage row, source cap, and setup summary contracts.                                      |
| `scripts/extensions/trend-finder/sources/apify-source-config.ts`                | Added reviewed keyword target metadata and validation for eligible source fields.                                 |
| `scripts/extensions/trend-finder/sources/apify-adapter.ts`                      | Applied compiled keyword windows to cloned Actor inputs while preserving spend labels and warnings.               |
| `scripts/extensions/trend-finder/sources/source-setup.ts`                       | Added default keyword coverage propagation for source setup state.                                                |
| `scripts/extensions/trend-finder/collector.ts`                                  | Resolved scan mode/category, propagated keyword setup summaries, warnings, trace data, and movement scan context. |
| `scripts/extensions/trend-finder/engine-trace.ts`                               | Added sanitized keyword-window trace mapping with unsafe-value rejection.                                         |
| `scripts/lib/ai-runtime/movement-analyst.ts`                                    | Added scan eligibility context and not-scanned fallback language for rotated-out topics.                          |
| `scripts/lib/ai-runtime/__tests__/movement-analyst.test.ts`                     | Covered not-scanned prompt and deterministic fallback behavior.                                                   |
| `src/extensions/trend-finder/schema.ts`                                         | Added additive browser payload defaults for keyword coverage and setup summaries.                                 |
| `src/extensions/trend-finder/engine-trace.ts`                                   | Added frontend keyword trace schema, defaults, labels, and artifact mapping.                                      |
| `src/extensions/trend-finder/view-model.ts`                                     | Projected coverage labels, mode labels, source cap summaries, and keyword warnings.                               |
| `src/extensions/trend-finder/fixtures.ts`                                       | Added fixture keyword coverage defaults.                                                                          |
| `src/extensions/trend-finder/components/source-setup-panel.tsx`                 | Rendered keyword coverage QA without browser mutation controls.                                                   |
| `src/extensions/trend-finder/components/__tests__/source-setup-panel.test.tsx`  | Covered coverage rendering, empty states, focused labels, and data re-entry behavior.                             |
| `scripts/extensions/trend-finder/__tests__/collector.test.ts`                   | Covered scan mode fallback, warnings, trace payloads, and source setup propagation.                               |
| `scripts/extensions/trend-finder/sources/__tests__/apify-adapter.test.ts`       | Covered cloned input mapping, cap handling, warnings, and spend label preservation.                               |
| `scripts/extensions/trend-finder/sources/__tests__/apify-source-config.test.ts` | Covered reviewed keyword target metadata and rejected unreviewed fields.                                          |
| `scripts/extensions/trend-finder/__tests__/engine-trace.test.ts`                | Covered keyword trace sanitization and unsafe value fallback.                                                     |
| `.spec_system/state.json`                                                       | Marked Session 13 completed and cleared the current session pointer.                                              |
| `.spec_system/PRD/phase_28/PRD_phase_28.md`                                     | Updated Phase 28 progress to 13/15 and recorded Session 13 completion.                                            |
| `.spec_system/PRD/phase_28/session_13_keyword_packs_rotation_and_coverage.md`   | Marked the session stub complete and checked shipped criteria.                                                    |
| `package.json`, `README.md`, `docs/CHANGELOG.md`                                | Bumped release references from 0.1.330 to 0.1.331 and recorded the closeout.                                      |

***

## Technical Decisions

1. **Reviewed config only**: Kept keyword packs as committed constants and rejected browser free-text keyword entry to preserve the source setup allowlist boundary.
2. **Stable core plus rotating tail**: Always includes core terms and rotates tail terms by `generatedAt` so repeated runs broaden coverage without raising source caps or spend ceilings.
3. **Clone before patching**: Applies compiled terms to cloned source inputs so static Apify declarations remain reviewed metadata, not mutable runtime defaults.
4. **Counts over raw input**: Publishes only bounded labels, counts, cap summaries, and warnings in browser and trace payloads.

***

## Test Results

| Metric          | Value                                                              |
| --------------- | ------------------------------------------------------------------ |
| Focused tests   | 102                                                                |
| Full test files | 302                                                                |
| Tests           | 3645                                                               |
| Passed          | 3645                                                               |
| Failed          | 0                                                                  |
| Coverage        | 89.02% lines, 86.31% statements, 76.37% branches, 92.35% functions |

Validated commands included `bun run test:coverage`, `bun run test`, `bun run typecheck`, `bun run typecheck:scripts`, scoped Prettier, ASCII/LF checks, security review, and behavioral quality review.

***

## Lessons Learned

1. Source input widening is safest when the compliance stance is documented before collector behavior changes.
2. Movement context needs explicit scan eligibility when deterministic rotation means prior topics may be absent because they were not scanned.
3. Coverage QA is more useful when projected as bounded operational status rather than exposing raw source inputs.

***

## Future Considerations

Items for future sessions:

1. Session 14 should reuse the reviewed target metadata and coverage summaries when direct first-party adapters are added.
2. Session 14 must keep direct adapter readiness, credentials, and source leak checks behind the same compliance-first boundary.
3. Session 15 should include keyword coverage, trace summaries, and source docs in the final phase validation and release review.

***

## Session Statistics

* **Tasks**: 25 completed
* **Files Created**: 10
* **Files Modified**: 26
* **Tests Added**: 102 focused tests covered
* **Blockers**: 0 resolved


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