> 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/phase27-session05-velocity-dynamics-upgrade/validation.md).

# Validation Report

**Session ID**: `phase27-session05-velocity-dynamics-upgrade` **Validated**: 2026-06-13 **Result**: PASS

***

## Validation Summary

| Check                     | Status | Notes                                                                                 |
| ------------------------- | ------ | ------------------------------------------------------------------------------------- |
| Tasks Complete            | PASS   | 20/20 tasks                                                                           |
| Files Exist               | PASS   | 18/18 declared deliverables                                                           |
| ASCII Encoding            | PASS   | No non-ASCII or CRLF in session files or touched code                                 |
| Tests Passing             | PASS   | 3377/3377 tests in final full run                                                     |
| Database/Schema Alignment | N/A    | N/A -- no DB-layer changes                                                            |
| Quality Gates             | PASS   | Typecheck, script typecheck, lint, scoped Prettier, and diff whitespace checks passed |
| Conventions               | PASS   | Matches Trend Finder script/runtime/UI patterns                                       |
| Security & GDPR           | PASS   | No security or GDPR findings                                                          |
| Behavioral Quality        | PASS   | Validation-time wiring gap fixed and re-tested                                        |

**Overall**: PASS

***

## 1. Task Completion

### Status: PASS

| Category       | Required | Completed | Status |
| -------------- | -------- | --------- | ------ |
| Setup          | 2        | 2         | PASS   |
| Foundation     | 6        | 6         | PASS   |
| Implementation | 8        | 8         | PASS   |
| Testing        | 4        | 4         | PASS   |

### Incomplete Tasks

None.

***

## 2. Deliverables Verification

### Status: PASS

#### Files Created

| File                                                                        | Found | Status |
| --------------------------------------------------------------------------- | ----- | ------ |
| `scripts/lib/ai-runtime/velocity-dynamics.ts`                               | Yes   | PASS   |
| `scripts/lib/ai-runtime/__tests__/velocity-dynamics.test.ts`                | Yes   | PASS   |
| `src/extensions/trend-finder/components/__tests__/score-breakdown.test.tsx` | Yes   | PASS   |
| `scripts/lib/ai-runtime/historical-context.ts`                              | Yes   | PASS   |
| `scripts/lib/ai-runtime/scoring.ts`                                         | Yes   | PASS   |
| `scripts/extensions/trend-finder/collector.ts`                              | Yes   | PASS   |
| `scripts/extensions/trend-finder/engine-trace.ts`                           | Yes   | PASS   |
| `src/extensions/trend-finder/schema.ts`                                     | Yes   | PASS   |
| `src/extensions/trend-finder/view-model.ts`                                 | Yes   | PASS   |
| `src/extensions/trend-finder/components/score-breakdown.tsx`                | Yes   | PASS   |
| `src/extensions/trend-finder/components/trend-card.tsx`                     | Yes   | PASS   |
| `src/extensions/trend-finder/engine-replay-model.ts`                        | Yes   | PASS   |
| `src/extensions/trend-finder/fixtures.ts`                                   | Yes   | PASS   |
| `scripts/lib/ai-runtime/__tests__/historical-context.test.ts`               | Yes   | PASS   |
| `scripts/lib/ai-runtime/__tests__/scoring.test.ts`                          | Yes   | PASS   |
| `src/lib/__tests__/trend-finder-schema.test.ts`                             | Yes   | PASS   |
| `src/extensions/trend-finder/__tests__/view-model.test.ts`                  | Yes   | PASS   |
| `src/lib/__tests__/trend-finder-engine-replay.test.tsx`                     | Yes   | PASS   |

### Missing Deliverables

None.

### Additional Files Touched During Validation

* `src/extensions/trend-finder/components/signal-radar.tsx`
* `src/extensions/trend-finder/views/hidden-gems-view.tsx`
* `src/extensions/trend-finder/views/watchlist-view.tsx`

These were updated to pass `topic.velocityDynamics` into `ScoreBreakdown` at existing topic score panels.

***

## 3. ASCII Encoding Check

### Status: PASS

| File Scope                      | Encoding | Line Endings | Status |
| ------------------------------- | -------- | ------------ | ------ |
| Session spec files              | ASCII    | LF           | PASS   |
| Declared deliverables           | ASCII    | LF           | PASS   |
| Additional validation fix files | ASCII    | LF           | PASS   |

### Encoding Issues

None.

***

## 4. Test Results

### Status: PASS

| Metric      | Value   |
| ----------- | ------- |
| Total Tests | 3377    |
| Passed      | 3377    |
| Failed      | 0       |
| Coverage    | Not run |

### Commands Run

* `bun run test` - PASS, 273 files and 3377 tests
* `bun run typecheck` - PASS
* `bun run typecheck:scripts` - PASS
* `bun run lint` - PASS with 3 warnings
* `bunx prettier --check [session files and touched code]` - PASS
* `git diff --check` - PASS

### Failed Tests

None in the final run.

One interim full-suite run failed in unchanged `src/components/knowledge-graph/__tests__/knowledge-graph-3d.test.tsx`. The failing test passed in isolation immediately after, and a final full `bun run test` passed all 3377 tests. No Knowledge Graph source files were touched by this session.

### Non-Blocking Warnings

`bun run lint` exits with code 0 and reports three warnings:

* `src/components/knowledge-graph/knowledge-graph-starter-chips.tsx`
* `src/extensions/trend-finder/views/hidden-gems-view.tsx`
* `src/extensions/trend-finder/views/trends-view.tsx`

The same warnings were present before the validation-time score panel patch.

***

## 5. Database/Schema Alignment

### Status: N/A

*N/A because the session introduced no DB-layer changes.*

* [x] Matching schema artifact exists for each relevant DB-layer change
* [x] Code and schema artifacts are aligned
* [x] Migration/status/diff check passed locally
* [x] Seed or rollback updates included when conventions require them

### Issues Found

N/A -- no DB-layer changes.

***

## 6. Success Criteria

From spec.md:

### Functional Requirements

* [x] Acceleration is derived from consecutive evidence-count deltas for the same canonical topic.
* [x] Significance returns `unavailable` below 3 snapshots or when variance is not meaningful.
* [x] Burst derives from the 14-day series and uses the last 2 day buckets as the last-48-hour window.
* [x] Burst support is capped and cannot dominate the six-factor score.
* [x] Legacy payloads without dynamics fields still parse and render unavailable states.
* [x] New-topic and missing-history topics never show invented acceleration, significance, or burst values.
* [x] Engine Replay scoring stage labels remain accurate for the new math.

### Testing Requirements

* [x] Unit tests cover acceleration, significance, burst, caps, low sample, zero variance, new topic, missing history, and missing series.
* [x] Historical-context tests cover bounded evidence-count and delta-history assembly from dated snapshots.
* [x] Schema tests cover additive defaults, bounds, malformed values, and legacy payload compatibility.
* [x] Component/view-model tests cover available and unavailable dynamics rows with accessible labels.
* [x] Focused Trend Finder runtime and UI test suites pass.

### Non-Functional Requirements

* [x] Browser payload stays within the shared 1 MB extension payload limit through bounded fields and capped arrays.
* [x] No new public source collection path, credential, AI call, or third-party transfer path is introduced.
* [x] Private snapshot archives and paths remain out of browser payloads, traces, UI, static exports, and logs.
* [x] Deterministic reruns produce the same dynamics values for the same inputs.

### Quality Gates

* [x] All files ASCII-encoded.
* [x] Unix LF line endings.
* [x] Code follows project conventions.
* [x] Relevant TypeScript and Vitest checks pass.

***

## 7. Conventions Compliance

### Status: PASS

| Category       | Status | Notes                                                                                                             |
| -------------- | ------ | ----------------------------------------------------------------------------------------------------------------- |
| Naming         | PASS   | Uses Trend Finder velocity dynamics terminology and descriptive helper names.                                     |
| File Structure | PASS   | Pure script runtime code stays under `scripts/lib/ai-runtime`; UI code stays under `src/extensions/trend-finder`. |
| Error Handling | PASS   | Unavailable states are explicit for missing history, low sample, zero variance, missing series, and no volume.    |
| Comments       | PASS   | No broad commented-out code or unnecessary narration added.                                                       |
| Testing        | PASS   | Focused tests live near the covered behavior.                                                                     |

### Convention Violations

None.

***

## 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

**Checklist applied**: Yes **Files spot-checked**:

* `scripts/lib/ai-runtime/velocity-dynamics.ts`
* `scripts/lib/ai-runtime/scoring.ts`
* `scripts/extensions/trend-finder/collector.ts`
* `src/extensions/trend-finder/schema.ts`
* `src/extensions/trend-finder/components/score-breakdown.tsx`

| Category           | Status | File                                                         | Details                                                                                              |
| ------------------ | ------ | ------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------- |
| Trust boundaries   | PASS   | `src/extensions/trend-finder/schema.ts`                      | Browser fields are bounded by Zod schemas with additive defaults and malformed payload fallback.     |
| Resource cleanup   | PASS   | `scripts/lib/ai-runtime/scoring.ts`                          | No timers, subscriptions, file handles, or connections added.                                        |
| Mutation safety    | PASS   | `scripts/lib/ai-runtime/scoring.ts`                          | Burst support is computed from raw per-call inputs and tested for idempotent repeated scoring calls. |
| Failure paths      | PASS   | `scripts/lib/ai-runtime/velocity-dynamics.ts`                | Missing or insufficient history maps to explicit unavailable states.                                 |
| Contract alignment | PASS   | `src/extensions/trend-finder/components/score-breakdown.tsx` | Rows consume view-model projections; validation fixed missed topic score panel call sites.           |

### Violations Found

None remaining.

### Fixes Applied During Validation

* Added `velocityDynamics={topic.velocityDynamics}` to `ScoreBreakdown` in `src/extensions/trend-finder/components/signal-radar.tsx`.
* Added `velocityDynamics={topic.velocityDynamics}` to `ScoreBreakdown` in `src/extensions/trend-finder/views/hidden-gems-view.tsx`.
* Added `velocityDynamics={topic.velocityDynamics}` to `ScoreBreakdown` in `src/extensions/trend-finder/views/watchlist-view.tsx`.

## Validation Result

### PASS

Session 05 satisfies the task checklist, declared deliverables, success criteria, security/GDPR checks, behavioral quality spot-check, and final test gates.

### Required Actions

None.

## Next Steps

Run updateprd to mark session complete.


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