> 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/phase21-session03-authoritative-claude-usage-oauth/validation.md).

# Validation Report

**Session ID**: `phase21-session03-authoritative-claude-usage-oauth` **Reviewed**: 2026-06-02 **Result**: PASS

***

## Validation Summary

| Check              | Status | Details                                                                                                                              |
| ------------------ | ------ | ------------------------------------------------------------------------------------------------------------------------------------ |
| Tasks Complete     | PASS   | `tasks.md` shows 22/22 tasks complete and the session notes record all task deliverables.                                            |
| Files Exist        | PASS   | All session deliverables are present, including the new OAuth helper, tests, implementation summary, and validation report.          |
| ASCII Encoding     | PASS   | Session-touched files were scanned for non-ASCII bytes and no matches were found.                                                    |
| LF Endings         | PASS   | Session-touched files were scanned for CRLF line endings and no matches were found.                                                  |
| Tests Passing      | PASS   | `bun run typecheck:scripts`, `bun run typecheck`, and `bun run test` all passed.                                                     |
| Quality Gates      | PASS   | Focused script and browser-contract checks were also recorded as passing in `implementation-notes.md`.                               |
| Security & Privacy | PASS   | OAuth credentials remain script-only, logs are redacted, and browser-visible data stays bounded and credential-free.                 |
| Behavioral Quality | PASS   | Live OAuth usage degrades safely to estimates, and the usage panel renders live versus estimate badges without overflow regressions. |

**Overall**: PASS

***

## Evidence

* `bun run typecheck:scripts`
* `bun run typecheck`
* `bun run test`
* ASCII scan on session-touched files
* LF scan on session-touched files

## Notes

* The session completes Phase 21 by adding authoritative Claude OAuth usage with silent fallback.
* No live credentials or live network calls were required for validation.
* The repo remains fully usable with local-log estimates when OAuth usage is unavailable.


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