> 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/phase29-session06-cross-topic-substrate-narratives/implementation-notes.md). # Implementation Notes **Session ID**: `phase29-session06-cross-topic-substrate-narratives` **Started**: 2026-06-20 21:17 **Last Updated**: 2026-06-20 21:42 *** ## Session Progress | Metric | Value | | ------------------- | ------- | | Tasks Completed | 22 / 22 | | Estimated Remaining | 0 | | Blockers | 0 | *** ## Task Log ### 2026-06-20 - Session Start **Environment verified**: * [x] Prerequisites confirmed * [x] Tools available * [x] Directory structure ready *** ### Task T001 - Verify analyzer state and stub scope **Started**: 2026-06-20 21:16 **Completed**: 2026-06-20 21:17 **Duration**: 1 minute **Notes**: * Ran the local spec analysis script and confirmed `phase29-session06-cross-topic-substrate-narratives` as the current session. * Confirmed Phase 29 Session 06 is the first unfinished phase session and Session 05 is listed as completed in analyzer state. * Read the Session 06 PRD stub and expanded spec to confirm scope is additive `runNarratives` over existing Trend Finder topics and evidence. **Files Changed**: * `.spec_system/specs/phase29-session06-cross-topic-substrate-narratives/tasks.md` - Marked T001 complete and updated progress. * `.spec_system/specs/phase29-session06-cross-topic-substrate-narratives/implementation-notes.md` - Initialized session log. **BQC Fixes**: * N/A - setup verification only. ### Task T002 - Inspect existing Trend Finder paths **Started**: 2026-06-20 21:17 **Completed**: 2026-06-20 21:17 **Duration**: 1 minute **Notes**: * Inspected theme rollups, analyst validation, collector scoring flow, schema defaults, view-model projections, static Brief export/rendering, QA scan, payload sizing, fixtures, and test locations. * Confirmed theme rollup groups are already returned from `assignThemeRollups`, so fallback narrative inputs can be consumed without changing topic assignment. * Confirmed analyst output validation is centralized in `validateTrendAnalystOutputData` and can reject invalid run narratives before scoring or browser export. **Files Changed**: * `.spec_system/specs/phase29-session06-cross-topic-substrate-narratives/tasks.md` - Marked T002 complete and updated progress. * `.spec_system/specs/phase29-session06-cross-topic-substrate-narratives/implementation-notes.md` - Logged inspection results. **BQC Fixes**: * N/A - code inspection only. ### Task T003 - Create run-narratives helper contract **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added a focused helper with bounded candidate input, canonical warning codes, deterministic IDs, provenance, confidence labels, topic/evidence citation limits, and result typing. **Files Changed**: * `scripts/extensions/trend-finder/run-narratives.ts` - Added helper contract and validation/build result types. **BQC Fixes**: * Contract alignment: helper output uses schema constants for limits and confidence caps. ### Task T004 - Add runNarratives schema defaults **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added root-level `runNarratives` schema, constants, default empty array, legacy-safe parsing, and superRefine checks for topic/evidence references. **Files Changed**: * `src/extensions/trend-finder/schema.ts` - Added narrative constants, schema, defaults, root field, and reference validation. **BQC Fixes**: * State freshness on re-entry: legacy payloads parse with `runNarratives: []`. * Contract alignment: invalid topic/evidence references fail schema validation. ### Task T005 - Extend analyst output contract **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added optional analyst `runNarratives` output type, Zod schema, output schema hint, repair guidance, prompt guidance, and sanitized log summaries. **Files Changed**: * `scripts/lib/ai-runtime/trend-analyst.ts` - Extended analyst contracts and prompt/request metadata. **BQC Fixes**: * Trust boundary enforcement: optional AI rows are schema-validated before use. ### Task T006 - Add analyst narrative validators **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added validator coverage for two-topic minimum, known topic IDs, known evidence IDs, evidence-topic membership, missing evidence, and public-copy voice checks. **Files Changed**: * `scripts/lib/ai-runtime/trend-analyst.ts` - Added validation issue codes and `validateRunNarrativeReferences`. **BQC Fixes**: * Trust boundary enforcement: AI narratives are rejected before collector/scoring if references are invalid. * Error information boundaries: validation issues carry codes and IDs, not raw model output. ### Task T007 - Prepare live view-model rows **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added `RunNarrativeViewModel` projection with bounded title/summary, confidence/provenance tones, topic citations, evidence citations, citation summaries, and aria labels. **Files Changed**: * `src/extensions/trend-finder/view-model.ts` - Added narrative view-model types and `getRunNarrativeViewModels`. **BQC Fixes**: * Accessibility and platform compliance: projection includes stable aria labels for rows and citations. ### Task T008 - Prepare static Brief report rows **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added static Brief narrative row schema, limits, projection from the live narrative view-model, and inclusion in the report model. **Files Changed**: * `scripts/extensions/trend-finder/static-brief-export.ts` - Added narrative schema and projection. * `scripts/extensions/trend-finder/static-brief-qa.ts` - Added required static section id. **BQC Fixes**: * Contract alignment: static export validates the same bounded narrative rows included in rendered HTML. ### Task T009 - Implement deterministic fallback narratives **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added deterministic fallback derivation from multi-topic theme groups plus shared source, entity, or keyword support tokens. * Fallback rows require at least two topics and linked evidence, skip generic groups, and cap confidence to the low band. **Files Changed**: * `scripts/extensions/trend-finder/run-narratives.ts` - Added fallback builder and shared-support token extraction. **BQC Fixes**: * Failure path completeness: unsupported/generic fallback groups emit sanitized warning codes instead of publishing weak rows. ### Task T010 - Implement narrative merge/drop policy **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added merge policy where valid AI candidates are accepted first, invalid candidates are dropped with warning codes, duplicate topic sets are skipped, and fallback fills remaining safe capacity. **Files Changed**: * `scripts/extensions/trend-finder/run-narratives.ts` - Added candidate validation and merge policy. **BQC Fixes**: * Duplicate action prevention: duplicate topic-set narratives are suppressed deterministically. * Error information boundaries: warnings do not include raw AI copy. ### Task T011 - Wire collector narrative generation **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Wired narrative generation after theme rollups and before final payload assembly. * Added sanitized trace metadata with counts, provenance, confidence labels, and citation counts only. **Files Changed**: * `scripts/extensions/trend-finder/collector.ts` - Added narrative helper import, warning mapper, generation step, trace, and final `runNarratives` payload field. **BQC Fixes**: * External dependency resilience: deterministic fallback has no network calls, timers, or timeouts. * Error information boundaries: collector traces omit summaries, raw model text, prompts, and private payloads. ### Task T012 - Adapt theme rollup group inputs **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Confirmed `ThemeRollupGroup` and grouped outputs were already exported. * Reused existing groups from `assignThemeRollups` without changing topic assignment behavior. **Files Changed**: * `scripts/extensions/trend-finder/collector.ts` - Captured existing theme rollup groups for narrative fallback. **BQC Fixes**: * Contract alignment: fallback consumes existing group output instead of reclassifying topics. ### Task T013 - Project runNarratives through view-model **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Projected validated rows into deterministic display order with known topic/evidence citation labels and safe empty filtering. **Files Changed**: * `src/extensions/trend-finder/view-model.ts` - Added projection and citation label builders. **BQC Fixes**: * Contract alignment: rows without at least two known topics and one evidence label are not displayed. ### Task T014 - Render Trends narrative rows **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added a compact run narrative panel on Trends with stable empty state, citation chips, confidence/provenance badges, and topic anchor links. **Files Changed**: * `src/extensions/trend-finder/views/trends-view.tsx` - Added visibility panel and narrative row rendering. **BQC Fixes**: * Accessibility and platform compliance: panel rows and citation links have labels and keyboard-focusable anchors. ### Task T015 - Render Brief narrative rows **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added live Brief narrative rows after Decisions, keeping ranked topic content below existing summary and decision surfaces. **Files Changed**: * `src/extensions/trend-finder/views/brief-view.tsx` - Added visibility panel and narrative row rendering. **BQC Fixes**: * State freshness on re-entry: rendering is derived only from parsed run data and adds no persisted local UI state. ### Task T016 - Project and render static Brief rows **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added escaped static HTML rendering for narrative title, summary, confidence/provenance tags, topic citations, and evidence citations. **Files Changed**: * `scripts/extensions/trend-finder/static-brief-renderer.ts` - Added narrative renderer and static section. **BQC Fixes**: * Error information boundaries: static renderer escapes all narrative and citation text. ### Task T017 - Update fixtures, payload reporting, and QA scans **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:18 **Duration**: 1 minute **Notes**: * Added AI-valid and fallback narrative rows to fixture data. * Added `data.runNarratives` to payload-size reporting and static QA required sections. **Files Changed**: * `src/extensions/trend-finder/fixtures.ts` - Added fixture narrative rows and empty defaults. * `scripts/extensions/trend-finder/measure-payload-size.ts` - Added payload reporting branch. * `scripts/extensions/trend-finder/static-brief-qa.ts` - Added static narrative section coverage. **BQC Fixes**: * Contract alignment: fixture narratives cite existing topic and evidence IDs. ## Verification Checkpoint ### 2026-06-20 21:18 - Type Checks * `bun run typecheck:scripts` passed. * `bun run typecheck` passed. ### Task T018 - Add run-narratives helper tests **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:40 **Duration**: 22 minutes **Notes**: * Added helper coverage for valid AI rows, one-topic drops, unknown and mismatched references, deterministic low-confidence fallback, generic fallback suppression, bounded copy, and unsafe-copy rejection. **Files Changed**: * `scripts/extensions/trend-finder/__tests__/run-narratives.test.ts` - Added helper-focused unit coverage. **BQC Fixes**: * Failure path completeness: invalid and generic candidate paths now have regression coverage. ### Task T019 - Add analyst validator tests **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:40 **Duration**: 22 minutes **Notes**: * Added analyst output tests for accepted grounded run narratives, unknown topic and evidence references, unsupported URL copy, and voice-guard rejection. **Files Changed**: * `scripts/lib/ai-runtime/__tests__/trend-analyst.test.ts` - Added run-narrative analyst validation coverage. **BQC Fixes**: * Trust boundary enforcement: analyst model output must pass citation and public-copy checks before collector use. ### Task T020 - Add collector, schema, view-model, and view tests **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:40 **Duration**: 22 minutes **Notes**: * Added collector attachment coverage, legacy schema default coverage, display citation labels, accessibility labels, and live Brief rendering coverage. * Fixed the narrative display lookup to resolve citations across all brief topic rows so valid hidden-gem cross-topic narratives are displayable. **Files Changed**: * `scripts/extensions/trend-finder/__tests__/collector.test.ts` - Added collector narrative attachment coverage. * `src/extensions/trend-finder/__tests__/view-model.test.ts` - Added schema default, projection, and drop coverage. * `src/extensions/trend-finder/views/__tests__/brief-view.test.tsx` - Added live Brief rendering coverage. * `src/extensions/trend-finder/view-model.ts` - Resolved narrative citations against all brief topics. **BQC Fixes**: * Contract alignment: display projection now matches the schema contract of any valid topic ID, not only non-hidden ranked cards. ### Task T021 - Add static Brief tests **Started**: 2026-06-20 21:18 **Completed**: 2026-06-20 21:40 **Duration**: 22 minutes **Notes**: * Added static Brief export assertions for projected narrative rows, QA section counts, privacy scanning, escaped rendering, empty states, and manifest QA output. **Files Changed**: * `scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts` - Added narrative projection and privacy assertions. * `scripts/extensions/trend-finder/__tests__/static-brief-renderer.test.ts` - Added narrative section, escaping, and empty-state assertions. * `scripts/extensions/trend-finder/__tests__/static-brief-qa.test.ts` - Updated expected checked section count. **BQC Fixes**: * Error information boundaries: static Brief tests now prove narrative output is escaped and excluded from raw/private leaks. ## Verification Checkpoint ### 2026-06-20 21:40 - Focused Vitest Suites * `bun run test -- scripts/extensions/trend-finder/__tests__/run-narratives.test.ts scripts/lib/ai-runtime/__tests__/trend-analyst.test.ts scripts/extensions/trend-finder/__tests__/collector.test.ts src/extensions/trend-finder/__tests__/view-model.test.ts src/extensions/trend-finder/views/__tests__/brief-view.test.tsx scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts scripts/extensions/trend-finder/__tests__/static-brief-renderer.test.ts scripts/extensions/trend-finder/__tests__/static-brief-qa.test.ts` passed. * Result: 8 test files passed, 157 tests passed. ### Task T022 - Run focused verification and closeout checks **Started**: 2026-06-20 21:40 **Completed**: 2026-06-20 21:42 **Duration**: 2 minutes **Notes**: * Ran targeted formatting on changed session, code, and test files. * Re-ran the focused Vitest suites after formatting. * Ran both script and app TypeScript checks. * Ran the payload-size reporter against `src/data/live-data.example.json` and confirmed `data.runNarratives` is tracked by the reporter for payloads that include the branch. * Ran ASCII validation across changed session, code, and test files. **Files Changed**: * `.spec_system/specs/phase29-session06-cross-topic-substrate-narratives/tasks.md` - Marked T022 and completion checklist complete. * `.spec_system/specs/phase29-session06-cross-topic-substrate-narratives/implementation-notes.md` - Logged final verification. **BQC Fixes**: * Contract alignment: final checks passed after formatting. ## Final Verification ### 2026-06-20 21:42 - Closeout * `bun run typecheck:scripts` passed. * `bun run typecheck` passed. * `bun run test -- scripts/extensions/trend-finder/__tests__/run-narratives.test.ts scripts/lib/ai-runtime/__tests__/trend-analyst.test.ts scripts/extensions/trend-finder/__tests__/collector.test.ts src/extensions/trend-finder/__tests__/view-model.test.ts src/extensions/trend-finder/views/__tests__/brief-view.test.tsx scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts scripts/extensions/trend-finder/__tests__/static-brief-renderer.test.ts scripts/extensions/trend-finder/__tests__/static-brief-qa.test.ts` passed after formatting. * `bun run scripts/extensions/trend-finder/measure-payload-size.ts src/data/live-data.example.json --threshold-kb=0 --json` passed. * ASCII validation across changed session/code/test files passed with no output. --- # Agent Instructions This documentation is published with GitBook. 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