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# Implementation Summary

**Session ID**: `phase17-session06-hook-context-and-provider-skill-parity` **Package**: `apps/hooks` **Completed**: 2026-06-05 **Duration**: 3 hours

***

## Overview

Added bounded Notice Board context lookup to the hook runtime, preserved the existing `hero_active` POST path, and emitted provider-safe additional context only for supported providers. The session also added focused fake-server hook tests and closed the bookkeeping with a patch version bump for `apps/hooks`.

***

## Deliverables

### Files Created

| File                                               | Purpose                                                                                            | Lines |
| -------------------------------------------------- | -------------------------------------------------------------------------------------------------- | ----- |
| `apps/hooks/tests/heroActiveNoticeContext.test.js` | Focused fake-server tests for context lookup, provider gating, auth, timeout, and privacy behavior | \~320 |

### Files Modified

| File                                        | Changes                                                                                                                          |
| ------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------- |
| `apps/hooks/src/_lib.js`                    | Added bounded JSON GET helper, Notice Board context parsing, provider-safe output gating, formatter redaction, and reminder text |
| `apps/hooks/src/factionos-hero-active.js`   | Added prompt-start Notice Board context lookup and safe additional-context emission while preserving `hero_active` POST behavior |
| `apps/hooks/README_hooks.md`                | Documented hook context lookup, CLI parity fallback, and the privacy boundary                                                    |
| `apps/hooks/package.json`                   | Bumped patch version from `0.1.39` to `0.1.40`                                                                                   |
| `.spec_system/state.json`                   | Marked the session complete and appended the completion history entry                                                            |
| `.spec_system/PRD/phase_17/PRD_phase_17.md` | Updated phase progress, session status, and completion history                                                                   |

***

## Technical Decisions

1. **Bounded GET helper in shared hook utilities**: kept timeout, auth, user agent, and failure handling consistent with the existing hook HTTP posture without spooling opportunistic context lookup failures.
2. **Provider-gated stdout**: limited additional-context output to providers with an explicit safe contract so Codex and unknown providers remain silent.

***

## Test Results

| Metric   | Value |
| -------- | ----- |
| Tests    | 23    |
| Passed   | 23    |
| Coverage | N/A   |

***

## Lessons Learned

1. Opportunistic context fetches should degrade to no-context outcomes instead of creating noise or spool entries.
2. Provider output contracts need to stay explicit so privacy-safe behavior can be enforced at the handler boundary.

***

## Future Considerations

Items for future sessions:

1. Reuse the same bounded context fetch pattern for any other hook entrypoints that need Notice Board context.
2. Keep privacy redaction filters aligned with any new notice payload shapes or provider output contracts.

***

## Session Statistics

* **Tasks**: 20 completed
* **Files Created**: 1
* **Files Modified**: 5
* **Tests Added**: 1
* **Blockers**: 0 resolved


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