> 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-session01-brief-movement-groups-and-calibration-metrics/validation.md).

# Validation Report

**Session ID**: `phase27-session01-brief-movement-groups-and-calibration-metrics` **Validated**: 2026-06-12 **Result**: PASS

***

## Validation Summary

| Check                     | Status | Notes                                                                 |
| ------------------------- | ------ | --------------------------------------------------------------------- |
| Tasks Complete            | PASS   | 20/20 tasks                                                           |
| Files Exist               | PASS   | 16/16 deliverables                                                    |
| ASCII Encoding            | PASS   | Deliverables and active session files are ASCII with LF endings       |
| Tests Passing             | PASS   | 3322/3322 tests                                                       |
| Database/Schema Alignment | N/A    | N/A -- no DB-layer changes                                            |
| Quality Gates             | PASS   | Typecheck, script typecheck, tests, and focused Prettier check passed |
| Conventions               | PASS   | Spot-check found no obvious convention violations                     |
| Security & GDPR           | PASS   | Security PASS; GDPR N/A                                               |
| Behavioral Quality        | PASS   | Application-code spot-check found no violations                       |

**Overall**: PASS

***

## 1. Task Completion

### Status: PASS

| Category       | Required | Completed | Status |
| -------------- | -------- | --------- | ------ |
| Setup          | 2        | 2         | PASS   |
| Foundation     | 5        | 5         | PASS   |
| Implementation | 8        | 8         | PASS   |
| Testing        | 5        | 5         | PASS   |

### Incomplete Tasks

None.

***

## 2. Deliverables Verification

### Status: PASS

#### Files Created

| File                                                                      | Found | Status |
| ------------------------------------------------------------------------- | ----- | ------ |
| `src/extensions/trend-finder/schema.ts`                                   | Yes   | PASS   |
| `scripts/lib/ai-runtime/retros.ts`                                        | Yes   | PASS   |
| `scripts/extensions/trend-finder/collector.ts`                            | Yes   | PASS   |
| `scripts/lib/ai-runtime/backtests.ts`                                     | Yes   | PASS   |
| `scripts/trend-finder-replay-backhistory.ts`                              | Yes   | PASS   |
| `src/extensions/trend-finder/view-model.ts`                               | Yes   | PASS   |
| `src/extensions/trend-finder/components/trend-card.tsx`                   | Yes   | PASS   |
| `src/extensions/trend-finder/views/brief-view.tsx`                        | Yes   | PASS   |
| `scripts/extensions/trend-finder/static-brief-export.ts`                  | Yes   | PASS   |
| `scripts/extensions/trend-finder/static-brief-renderer.ts`                | Yes   | PASS   |
| `src/extensions/trend-finder/fixtures.ts`                                 | Yes   | PASS   |
| `scripts/lib/ai-runtime/__tests__/retros.test.ts`                         | Yes   | PASS   |
| `src/extensions/trend-finder/__tests__/view-model.test.ts`                | Yes   | PASS   |
| `src/lib/__tests__/trend-finder-schema.test.ts`                           | Yes   | PASS   |
| `scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts`   | Yes   | PASS   |
| `scripts/extensions/trend-finder/__tests__/static-brief-renderer.test.ts` | Yes   | PASS   |

### Missing Deliverables

None.

***

## 3. ASCII Encoding Check

### Status: PASS

| File                                                                      | Encoding | Line Endings | Status |
| ------------------------------------------------------------------------- | -------- | ------------ | ------ |
| `src/extensions/trend-finder/schema.ts`                                   | ASCII    | LF           | PASS   |
| `scripts/lib/ai-runtime/retros.ts`                                        | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/collector.ts`                            | ASCII    | LF           | PASS   |
| `scripts/lib/ai-runtime/backtests.ts`                                     | ASCII    | LF           | PASS   |
| `scripts/trend-finder-replay-backhistory.ts`                              | ASCII    | LF           | PASS   |
| `src/extensions/trend-finder/view-model.ts`                               | ASCII    | LF           | PASS   |
| `src/extensions/trend-finder/components/trend-card.tsx`                   | ASCII    | LF           | PASS   |
| `src/extensions/trend-finder/views/brief-view.tsx`                        | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/static-brief-export.ts`                  | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/static-brief-renderer.ts`                | ASCII    | LF           | PASS   |
| `src/extensions/trend-finder/fixtures.ts`                                 | ASCII    | LF           | PASS   |
| `scripts/lib/ai-runtime/__tests__/retros.test.ts`                         | ASCII    | LF           | PASS   |
| `src/extensions/trend-finder/__tests__/view-model.test.ts`                | ASCII    | LF           | PASS   |
| `src/lib/__tests__/trend-finder-schema.test.ts`                           | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts`   | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/__tests__/static-brief-renderer.test.ts` | ASCII    | LF           | PASS   |

### Encoding Issues

None.

***

## 4. Test Results

### Status: PASS

| Metric      | Value         |
| ----------- | ------------- |
| Total Tests | 3322          |
| Passed      | 3322          |
| Failed      | 0             |
| Coverage    | Not collected |

### Failed Tests

None.

### Commands

* `bun run typecheck` - PASS
* `bun run typecheck:scripts` - PASS
* `bun run test` - PASS, 267 files and 3322 tests
* `bunx prettier --check ...` on session deliverables - PASS

***

## 5. Database/Schema Alignment

### Status: N/A

N/A -- no DB-layer changes. This session changed TypeScript/Zod browser payload contracts, runtime aggregation helpers, UI/static projections, and tests. It added no migrations, tables, persisted database schema, seeds, indexes, ORM models, or DB access paths.

### Issues Found

N/A -- no DB-layer changes.

***

## 6. Success Criteria

From spec.md:

### Functional Requirements

* [x] Brief groups visible topics into moved-up, cooled, and emerging sections using existing payload data only.
* [x] Today's pick renders a bounded selection reason and does not invent unsupported metrics.
* [x] Confidence bands render consistently across TrendCard, Brief, and Static Brief rows.
* [x] Calibration summary includes outcome counts, resolved count, hit rate, Brier-style score, generated timestamp, and explicit unavailable state.
* [x] Static Brief includes the new sections through projection and retains public-link and privacy filtering.
* [x] Legacy payloads that omit calibration still parse with safe defaults.

### Testing Requirements

* [x] Unit tests cover retro aggregate math including hit, partial, miss, and pending outcomes.
* [x] Unit tests cover confidence band thresholds and movement grouping order.
* [x] Schema tests cover default parsing for legacy payloads.
* [x] Static Brief export and renderer tests cover projected sections and empty states.
* [x] Focused tests passed before full validation was attempted.

### Quality Gates

* [x] All checked files are ASCII-encoded.
* [x] Unix LF line endings.
* [x] Code follows project conventions by spot-check.
* [x] `bun run test` passed.
* [x] `bun run typecheck` and `bun run typecheck:scripts` passed.

***

## 7. Conventions Compliance

### Status: PASS

| Category       | Status | Notes                                                                   |
| -------------- | ------ | ----------------------------------------------------------------------- |
| Naming         | PASS   | New names use existing Trend Finder terms and descriptive helper names. |
| File Structure | PASS   | Code and tests stay in existing Trend Finder and scripts locations.     |
| Error Handling | PASS   | Missing or pending-only retro data renders explicit unavailable states. |
| Comments       | PASS   | No commented-out code or noisy comments found in the spot-check.        |
| Testing        | PASS   | Focused tests live beside behavior under existing test folders.         |

### 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**: `src/extensions/trend-finder/schema.ts`, `scripts/lib/ai-runtime/retros.ts`, `src/extensions/trend-finder/view-model.ts`, `scripts/extensions/trend-finder/static-brief-export.ts`, `scripts/extensions/trend-finder/static-brief-renderer.ts`

| Category           | Status | File                                                     | Details                                                                                           |
| ------------------ | ------ | -------------------------------------------------------- | ------------------------------------------------------------------------------------------------- |
| Trust boundaries   | PASS   | `src/extensions/trend-finder/schema.ts`                  | New calibration object is Zod-validated with bounded counts and score ranges.                     |
| Resource cleanup   | PASS   | `scripts/lib/ai-runtime/retros.ts`                       | New helpers are pure aggregation functions and acquire no resources.                              |
| Mutation safety    | PASS   | `src/extensions/trend-finder/view-model.ts`              | New view-model helpers derive presentation data without mutating input payloads.                  |
| Failure paths      | PASS   | `scripts/lib/ai-runtime/retros.ts`                       | Empty and pending-only retros return explicit unavailable states instead of fake accuracy values. |
| Contract alignment | PASS   | `scripts/extensions/trend-finder/static-brief-export.ts` | Static Brief projects bounded fields before renderer consumption.                                 |

### Violations Found

None.

### Fixes Applied During Validation

None.

## Validation Result

### PASS

All session tasks, deliverables, encoding checks, tests, success criteria, security checks, GDPR scope review, conventions spot-check, and behavioral quality checks passed.

### Required Actions

None.

## Next Steps

Run `updateprd` to mark the session complete.


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