> 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-session08-required-derived-field-closeout-gate/validation.md).

# Validation Report

**Session ID**: `phase29-session08-required-derived-field-closeout-gate` **Validated**: 2026-06-20 **Result**: PASS

***

## Validation Summary

| Check                     | Status | Notes                                                                                                        |
| ------------------------- | ------ | ------------------------------------------------------------------------------------------------------------ |
| Tasks Complete            | PASS   | 20/20 tasks                                                                                                  |
| Files Exist               | PASS   | 15/15 deliverable files found and non-empty                                                                  |
| ASCII Encoding            | PASS   | All deliverables and session files are ASCII with LF endings                                                 |
| Tests Passing             | PASS   | 3,790/3,790 executable tests passed                                                                          |
| Database/Schema Alignment | N/A    | N/A - no DB-layer or migration changes                                                                       |
| Quality Gates             | PASS   | Typecheck, script typecheck, lint, scoped Prettier, payload budget, private scan, and diff whitespace passed |
| Conventions               | PASS   | Spot-check found no obvious violations                                                                       |
| Security & GDPR           | PASS   | No findings; GDPR N/A for new personal data handling                                                         |
| Behavioral Quality        | PASS   | Closeout checks are bounded, sanitized, and placed before write/render handoff boundaries                    |

**Overall**: PASS

***

## 1. Task Completion

### Status: PASS

| Category       | Required | Completed | Status |
| -------------- | -------- | --------- | ------ |
| Setup          | 2        | 2         | PASS   |
| Foundation     | 5        | 5         | PASS   |
| Implementation | 9        | 9         | PASS   |
| Testing        | 4        | 4         | PASS   |

### Incomplete Tasks

None.

***

## 2. Deliverables Verification

### Status: PASS

#### Files Created

| File                                                                        | Found | Status |
| --------------------------------------------------------------------------- | ----- | ------ |
| `scripts/extensions/trend-finder/required-derived-fields.ts`                | Yes   | PASS   |
| `scripts/extensions/trend-finder/__tests__/required-derived-fields.test.ts` | Yes   | PASS   |
| `scripts/extensions/trend-finder/collector.ts`                              | Yes   | PASS   |
| `scripts/extensions/trend-finder/static-brief-export.ts`                    | Yes   | PASS   |
| `scripts/extensions/trend-finder/static-brief-qa.ts`                        | Yes   | PASS   |
| `scripts/extensions/trend-finder/measure-payload-size.ts`                   | Yes   | PASS   |
| `src/extensions/trend-finder/schema.ts`                                     | Yes   | PASS   |
| `src/extensions/trend-finder/fixtures.ts`                                   | Yes   | PASS   |
| `scripts/extensions/trend-finder/__tests__/collector.test.ts`               | Yes   | PASS   |
| `scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts`     | Yes   | PASS   |
| `src/extensions/trend-finder/__tests__/view-model.test.ts`                  | Yes   | PASS   |
| `tests/e2e/trend-finder-static-brief.spec.ts`                               | Yes   | PASS   |
| `tests/e2e/trend-finder-engine-replay.spec.ts`                              | Yes   | PASS   |
| `docs/extensions/trend-finder-pipeline.md`                                  | Yes   | PASS   |
| `docs/extensions/trend-finder-ui-surfaces.md`                               | Yes   | PASS   |

### Missing Deliverables

None.

***

## 3. ASCII Encoding Check

### Status: PASS

| File                                                                                                | Encoding | Line Endings | Status |
| --------------------------------------------------------------------------------------------------- | -------- | ------------ | ------ |
| `.spec_system/specs/phase29-session08-required-derived-field-closeout-gate/spec.md`                 | ASCII    | LF           | PASS   |
| `.spec_system/specs/phase29-session08-required-derived-field-closeout-gate/tasks.md`                | ASCII    | LF           | PASS   |
| `.spec_system/specs/phase29-session08-required-derived-field-closeout-gate/implementation-notes.md` | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/required-derived-fields.ts`                                        | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/__tests__/required-derived-fields.test.ts`                         | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/collector.ts`                                                      | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/static-brief-export.ts`                                            | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/static-brief-qa.ts`                                                | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/measure-payload-size.ts`                                           | ASCII    | LF           | PASS   |
| `src/extensions/trend-finder/schema.ts`                                                             | ASCII    | LF           | PASS   |
| `src/extensions/trend-finder/fixtures.ts`                                                           | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/__tests__/collector.test.ts`                                       | ASCII    | LF           | PASS   |
| `scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts`                             | ASCII    | LF           | PASS   |
| `src/extensions/trend-finder/__tests__/view-model.test.ts`                                          | ASCII    | LF           | PASS   |
| `tests/e2e/trend-finder-static-brief.spec.ts`                                                       | ASCII    | LF           | PASS   |
| `tests/e2e/trend-finder-engine-replay.spec.ts`                                                      | ASCII    | LF           | PASS   |
| `docs/extensions/trend-finder-pipeline.md`                                                          | ASCII    | LF           | PASS   |
| `docs/extensions/trend-finder-ui-surfaces.md`                                                       | ASCII    | LF           | PASS   |

### Encoding Issues

None.

***

## 4. Test Results

### Status: PASS

| Metric      | Value         |
| ----------- | ------------- |
| Total Tests | 3,790         |
| Passed      | 3,790         |
| Failed      | 0             |
| Coverage    | Not collected |

### Commands

* `bun run test` - passed, 321 files / 3,789 tests.
* `bun run typecheck` - passed.
* `bun run typecheck:scripts` - passed.
* `bun run lint` - passed.
* `bun run test:e2e -- tests/e2e/trend-finder-static-brief.spec.ts` - passed, 1 Playwright test.
* `bun run scripts/extensions/trend-finder/measure-payload-size.ts --json` - passed; Trend Finder browser data payload is 457,150 bytes under the 1,048,576 byte boundary.
* `bun run runtime:check-private` - passed.
* `git diff --check` - passed.
* `bunx prettier --check` on active session deliverables - passed.

### Failed Tests

None.

### Notes

Repo-wide `bun run format:check` still reports historical `.spec_system` markdown files outside this session. The current session spec was formatted during validation, and the scoped touched-file Prettier check passed.

***

## 5. Database/Schema Alignment

### Status: N/A

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

* [x] No migrations, database clients, DB schemas, persisted data constraints, indexes, seeds, ORM metadata, or database configuration changed.
* [x] Application schema changes are TypeScript/Zod payload contracts only, and are covered by parser and closeout tests.

### Issues Found

N/A - no DB-layer changes.

***

## 6. Success Criteria

From spec.md:

### Functional Requirements

* [x] A generated fixture topic missing `attentionPattern` fails closeout before browser/static rendering.
* [x] A generated fixture topic missing `receptionSignal` fails closeout before browser/static rendering.
* [x] A generated fixture topic missing `corroboration` fails closeout before browser/static rendering.
* [x] A generated fixture topic missing `evidenceRationales` fails closeout before browser/static rendering.
* [x] A generated payload missing `runNarratives` fails closeout before static Brief projection.
* [x] Empty but present fallback shapes, such as `evidenceRationales: {}` and `runNarratives: []`, pass closeout.
* [x] Legacy payloads relying on schema defaults still parse safely through normal schema APIs.
* [x] Validation issues identify only field, topic ID, scope, code, and bounded safe path.

### Testing Requirements

* [x] Unit tests written and passing for closeout helper issue detection, safe formatting, issue caps, and allowed empty defaults.
* [x] Collector tests prove generated payload validation fails before browser handoff when required fields are missing.
* [x] Static Brief export tests prove missing fields block before rendering and complete payloads still export.
* [x] Schema/view-model tests prove legacy default parsing remains safe.
* [x] Payload-size and privacy scan checks remain green.

### Quality Gates

* [x] All files ASCII-encoded.
* [x] Unix LF line endings.
* [x] Code follows project conventions.
* [x] New enum or schema branches use explicit fallback behavior.

***

## 7. Conventions Compliance

### Status: PASS

| Category       | Status | Notes                                                                       |
| -------------- | ------ | --------------------------------------------------------------------------- |
| Naming         | PASS   | Names are descriptive and match Trend Finder closeout language.             |
| File Structure | PASS   | Helper and tests live in existing Trend Finder script and test folders.     |
| Error Handling | PASS   | Collector and static export surface dedicated, sanitized closeout failures. |
| Comments       | PASS   | No noisy or commented-out code added.                                       |
| Testing        | PASS   | Tests are behavior-focused and colocated with script/model 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/extensions/trend-finder/required-derived-fields.ts`
* `scripts/extensions/trend-finder/collector.ts`
* `scripts/extensions/trend-finder/static-brief-export.ts`
* `scripts/extensions/trend-finder/static-brief-qa.ts`
* `src/extensions/trend-finder/schema.ts`

| Category           | Status | File                                                                   | Details                                                                                                                     |
| ------------------ | ------ | ---------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------- |
| Trust boundaries   | PASS   | `required-derived-fields.ts`, `collector.ts`, `static-brief-export.ts` | Raw generated/export payloads are checked before schema defaults, snapshots, browser handoff, or static rendering.          |
| Resource cleanup   | PASS   | `static-brief-export.ts`                                               | In-flight output directory guard is removed in a `finally` block.                                                           |
| Mutation safety    | PASS   | `static-brief-export.ts`                                               | Concurrent exports to the same output root are rejected with `export_in_progress`.                                          |
| Failure paths      | PASS   | `collector.ts`, `static-brief-export.ts`                               | Closeout failures throw or return explicit sanitized errors before writes/rendering.                                        |
| Contract alignment | PASS   | `schema.ts`, `required-derived-fields.ts`                              | Required field lists are typed against `TrendTopic` and `TrendFinderData` keys, while legacy parser defaults remain intact. |

### Violations Found

None.

### Fixes Applied During Validation

* Formatted `.spec_system/specs/phase29-session08-required-derived-field-closeout-gate/spec.md` with Prettier.

## Validation Result

### PASS

Session 08 satisfies the validate workflow: tasks are complete, deliverables exist, encoding is clean, tests and local quality gates pass, security/GDPR review found no findings, database alignment is not applicable, and behavioral quality spot-checks passed.

### Required Actions

None.

## Next Steps

Run updateprd to mark session complete.


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