> 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/phase24-session07-static-brief-export/implementation_summary.md).

# Implementation Summary

**Session ID**: `phase24-session07-static-brief-export` **Completed**: 2026-06-08 **Duration**: 2 hours

***

## Overview

Implemented the Trend Finder static Brief export path as an opt-in browser-safe report generator. The session added the export CLI, safe projection and rendering modules, privacy and path containment checks, fixture-backed tests, and documentation updates so operators can produce a standalone report without exporting private runtime data.

***

## Deliverables

### Files Created

| File                                                                      | Purpose                                                                      | Lines |
| ------------------------------------------------------------------------- | ---------------------------------------------------------------------------- | ----- |
| `scripts/trend-finder-export-brief.ts`                                    | CLI entrypoint for static Brief export, dry-run support, and exit codes.     | \~220 |
| `scripts/extensions/trend-finder/static-brief-export.ts`                  | Safe projection, privacy checks, path containment, and atomic output writes. | \~520 |
| `scripts/extensions/trend-finder/static-brief-renderer.ts`                | Deterministic standalone HTML rendering with escaped inline data.            | \~420 |
| `scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts`   | Projection, privacy, path, and file-write coverage.                          | \~360 |
| `scripts/extensions/trend-finder/__tests__/static-brief-renderer.test.ts` | Renderer escaping, accessibility, and safety coverage.                       | \~240 |
| `tests/e2e/trend-finder-static-brief.spec.ts`                             | Browser smoke coverage for the exported static report.                       | \~180 |

### Files Modified

| File                                                     | Changes                                                                              |
| -------------------------------------------------------- | ------------------------------------------------------------------------------------ |
| `package.json`                                           | Added the `trend-finder:export-brief` script and bumped the patch version.           |
| `src/extensions/trend-finder/fixtures.ts`                | Added and adjusted fixture coverage for static export inputs and unsafe-field cases. |
| `tests/e2e/fixtures/live-data.ts`                        | Updated live-data fixtures used by the browser smoke.                                |
| `docs/extensions/README_docs-extensions.md`              | Documented the implemented export and privacy boundary.                              |
| `docs/extensions/trend-finder-pipeline.md`               | Documented the export command, output root, and opt-in hosting boundary.             |
| `docs/extensions/trend-finder-ui-surfaces.md`            | Documented static Brief behavior and excluded local triage state.                    |
| `docs/extensions/trend-finder-runtime-and-provenance.md` | Documented static export provenance labels and generated artifact boundaries.        |

***

## Technical Decisions

1. **Project before rendering**: The CLI validates and narrows the live Trend Finder payload before any HTML generation so the renderer only receives a safe contract.
2. **Fail closed on private data**: Unsafe field names, private paths, and token-shaped strings are rejected before the final report is written.
3. **Keep output local by default**: The generated report stays under the private cache root unless an explicit, contained output path is provided.

***

## Test Results

| Metric        | Value                                                                                   |
| ------------- | --------------------------------------------------------------------------------------- |
| Tests         | 3092 passed                                                                             |
| Coverage      | Not measured                                                                            |
| Quality gates | `typecheck`, `typecheck:scripts`, `lint`, `format:check`, and `git diff --check` passed |

***

## Lessons Learned

1. Static export needs a dedicated projection layer so browser-safe output stays decoupled from the full runtime payload.
2. The browser smoke is useful for proving that the exported report stays readable without leaking excluded private strings.

***

## Future Considerations

Items for future sessions:

1. Finish the remaining phase 24 documentation and reference-mode work.
2. Keep the static export boundaries aligned with future Trend Finder source and asset changes.

***

## Session Statistics

* **Tasks**: 25 completed
* **Files Created**: 6
* **Files Modified**: 7
* **Tests Added**: 3
* **Blockers**: 0


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