> 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-session02-signal-quality-score-and-collection-health/validation.md).

# Validation Report

**Session ID**: `phase28-session02-signal-quality-score-and-collection-health` **Validated**: 2026-06-14 **Result**: PASS

***

## Validation Summary

| Check                     | Status | Notes                                                                                                           |
| ------------------------- | ------ | --------------------------------------------------------------------------------------------------------------- |
| Tasks Complete            | PASS   | 24/24 tasks                                                                                                     |
| Files Exist               | PASS   | 16/16 spec deliverables found; 1 additional support file reviewed                                               |
| ASCII Encoding            | PASS   | All deliverables and session artifacts ASCII-only with LF endings                                               |
| Tests Passing             | PASS   | 3492/3492 tests passed                                                                                          |
| Database/Schema Alignment | N/A    | N/A - no DB-layer changes                                                                                       |
| Quality Gates             | PASS   | `bun run test`, `bun run lint`, `bun run typecheck:scripts`, `bun run typecheck`, and `git diff --check` passed |
| Conventions               | PASS   | Prettier formatting applied during validation; no lint or obvious convention violations remain                  |
| Security & GDPR           | PASS   | No security findings; GDPR N/A because no personal data handling was added                                      |
| Behavioral Quality        | PASS   | Targeted application-code spot-check passed after UI compatibility fix                                          |

**Overall**: PASS

***

## 1. Task Completion

### Status: PASS

| Category       | Required | Completed | Status |
| -------------- | -------- | --------- | ------ |
| Setup          | 3        | 3         | PASS   |
| Foundation     | 6        | 6         | PASS   |
| Implementation | 10       | 10        | PASS   |
| Testing        | 5        | 5         | PASS   |

### Incomplete Tasks

None.

***

## 2. Deliverables Verification

### Status: PASS

#### Files Created

| File                                                                           | Found | Status |
| ------------------------------------------------------------------------------ | ----- | ------ |
| `scripts/extensions/trend-finder/sources/__tests__/source-quality.test.ts`     | Yes   | PASS   |
| `src/extensions/trend-finder/components/__tests__/engine-source-rail.test.tsx` | Yes   | PASS   |

#### Files Modified

| File                                                                | Found | Status |
| ------------------------------------------------------------------- | ----- | ------ |
| `scripts/extensions/trend-finder/sources/source-quality.ts`         | Yes   | PASS   |
| `scripts/lib/ai-runtime/trend-analyst.ts`                           | Yes   | PASS   |
| `scripts/extensions/trend-finder/collector.ts`                      | Yes   | PASS   |
| `scripts/lib/ai-runtime/scoring.ts`                                 | Yes   | PASS   |
| `src/extensions/trend-finder/schema.ts`                             | Yes   | PASS   |
| `src/extensions/trend-finder/view-model.ts`                         | Yes   | PASS   |
| `src/extensions/trend-finder/views/sources-view.tsx`                | Yes   | PASS   |
| `src/extensions/trend-finder/components/engine-source-rail.tsx`     | Yes   | PASS   |
| `src/extensions/trend-finder/signal-workbench-model.ts`             | Yes   | PASS   |
| `src/extensions/trend-finder/components/signal-workbench-table.tsx` | Yes   | PASS   |
| `scripts/extensions/trend-finder/engine-trace.ts`                   | Yes   | PASS   |
| `src/extensions/trend-finder/__tests__/view-model.test.ts`          | Yes   | PASS   |
| `scripts/extensions/trend-finder/__tests__/collector.test.ts`       | Yes   | PASS   |
| `scripts/lib/ai-runtime/__tests__/scoring.test.ts`                  | Yes   | PASS   |

#### Additional Support File Reviewed

| File                                                 | Found | Status |
| ---------------------------------------------------- | ----- | ------ |
| `src/extensions/trend-finder/engine-replay-model.ts` | Yes   | PASS   |
| `src/extensions/trend-finder/engine-trace.ts`        | Yes   | PASS   |

### Missing Deliverables

None.

***

## 3. ASCII Encoding Check

### Status: PASS

| File Set                 | Encoding | Line Endings | Status |
| ------------------------ | -------- | ------------ | ------ |
| Session deliverables     | ASCII    | LF           | PASS   |
| Additional support files | ASCII    | LF           | PASS   |
| Session spec artifacts   | ASCII    | LF           | PASS   |

### Encoding Issues

None.

***

## 4. Test Results

### Status: PASS

| Metric      | Value         |
| ----------- | ------------- |
| Total Tests | 3492          |
| Passed      | 3492          |
| Failed      | 0             |
| Coverage    | Not collected |

### Commands Run

* `bun run test` - PASS, 285 test files and 3492 tests passed
* `bun run lint` - PASS
* `bun run typecheck:scripts` - PASS
* `bun run typecheck` - PASS
* `git diff --check` - PASS

### Failed Tests

None after validation fixes.

***

## 5. Database/Schema Alignment

### Status: N/A

*N/A because the session introduced no persisted data shape, database migration, database constraint, index, seed, ORM metadata, or DB-layer behavior change.*

* [x] No DB-layer change detected
* [x] No schema artifact required
* [x] Application schema changes are Zod browser/script payload contracts only

### Issues Found

N/A - no DB-layer changes.

***

## 6. Success Criteria

From spec.md:

### Functional Requirements

* [x] Every evidence row carries one bounded cross-source quality score derived from existing local inputs and safe defaults.
* [x] Evidence selection uses the shared quality score while preserving stable deterministic tie-breakers.
* [x] Evidence-strength scoring consumes the shared quality score, with per-source relevance retained as a component rather than the public interface.
* [x] Payload run metadata includes duplicate rate, duplicate count, high-duplicate state, sources-with-evidence count, configured source count, and a coverage label.
* [x] Sources view and Engine Replay show duplicate pressure and source coverage without exposing raw URLs, private paths, or source payloads.
* [x] Legacy payloads and fixtures parse with unavailable or zero defaults.

### Testing Requirements

* [x] Unit tests written and passing for quality score components and ordering.
* [x] Collector tests cover quality propagation, duplicate-rate rollup, high-duplicate warning state, and degraded coverage.
* [x] Scoring tests prove quality changes evidence-strength and evidence selection without changing six-factor weights.
* [x] Schema/view-model tests cover defaults and UI labels.
* [x] Component tests cover Engine Replay collection-health rendering.

### Quality Gates

* [x] All files ASCII-encoded.
* [x] Unix LF line endings.
* [x] Code follows project conventions.
* [x] Focused Vitest suites pass as part of full `bun run test`.
* [x] `bun run typecheck:scripts` passes for script-side contracts touched in this session.

***

## 7. Conventions Compliance

### Status: PASS

| Category       | Status | Notes                                                                                      |
| -------------- | ------ | ------------------------------------------------------------------------------------------ |
| Naming         | PASS   | New names match Trend Finder quality, collection-health, and Engine Trace terminology.     |
| File Structure | PASS   | Tests and implementation remain in existing Trend Finder script/component/model locations. |
| Error Handling | PASS   | Collector quality parsing emits bounded warnings and safe fallbacks.                       |
| Comments       | PASS   | No commented-out code or unnecessary explanatory comments found.                           |
| Testing        | PASS   | Focused tests cover scoring, collector, schema/view-model, and component behavior.         |

### Convention Violations

None remain. Prettier formatting issues found by `bun run lint` were fixed during validation.

***

## 8. Security & GDPR Compliance

### Status: PASS

**Full report**: See `security-compliance.md` in this session directory.

#### Summary

| Area     | Status | Findings |
| -------- | ------ | -------- |
| Security | PASS   | 0 issues |
| GDPR     | N/A    | 0 issues |

### Critical Violations

None.

***

## 9. Behavioral Quality Spot-Check

### Status: PASS

*Application code was produced, so BQC applies.*

**Checklist applied**: Yes **Files spot-checked**: `scripts/extensions/trend-finder/collector.ts`, `scripts/extensions/trend-finder/sources/source-quality.ts`, `scripts/lib/ai-runtime/scoring.ts`, `src/extensions/trend-finder/schema.ts`, `src/extensions/trend-finder/views/sources-view.tsx`

| Category           | Status | File                                                        | Details                                                                                                                   |
| ------------------ | ------ | ----------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------- |
| Trust boundaries   | PASS   | `scripts/extensions/trend-finder/collector.ts`              | Browser and analyst evidence quality data is schema-validated or defaulted with bounded warnings.                         |
| Resource cleanup   | PASS   | `src/extensions/trend-finder/views/sources-view.tsx`        | No new timers, subscriptions, connections, or retained resources added.                                                   |
| Mutation safety    | PASS   | `scripts/extensions/trend-finder/collector.ts`              | New quality and collection-health calculations are deterministic local transformations inside an existing run pipeline.   |
| Failure paths      | PASS   | `scripts/extensions/trend-finder/sources/source-quality.ts` | Missing URLs, malformed timestamps, missing source-local metrics, and invalid quality values fall back to bounded scores. |
| Contract alignment | PASS   | `src/extensions/trend-finder/schema.ts`                     | Additive schema defaults preserve legacy payload parsing and match UI/model consumers.                                    |

### Violations Found

None.

### Fixes Applied During Validation

* Restored legacy Sources view summary strings while keeping new collection-health labels, fixing two full-suite test failures.
* Applied Prettier formatting to touched implementation files after ESLint reported formatting-only issues.

## Validation Result

### PASS

Session 02 satisfies the task checklist, deliverables, quality gates, security/GDPR review, and behavioral quality spot-check. The validation-time fixes were rechecked with focused suites, the full Vitest suite, lint, both typechecks, diff whitespace validation, and ASCII/LF checks.

### Required Actions

None.

## Next Steps

Run updateprd to mark session complete.


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