> For the complete documentation index, see [llms.txt](https://faction-os.gitbook.io/faction-os-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://faction-os.gitbook.io/faction-os-docs/.spec_system/archive/sessions/phase18-session03-suggestion-routes-and-websocket-parity/implementation_summary.md).

# Implementation Summary

**Session ID**: `phase18-session03-suggestion-routes-and-websocket-parity` **Package**: `apps/server` **Completed**: 2026-06-10 **Duration**: 0.2 hours

***

## Overview

Shipped the server-owned Quest Board suggestion route layer and WebSocket hydration parity for the active Phase 18 session. The server now accepts and dismisses idle suggestions and codebase issues through the shipped `/suggestions/*` and `/issues/*` routes, exposes summary counts, emits canonical `suggestion_update` snapshots with compatibility `idle_suggestion` frames, and hydrates new WebSocket clients from current manager state.

***

## Deliverables

### Files Created

| File                                            | Purpose                                                                                         | Lines |
| ----------------------------------------------- | ----------------------------------------------------------------------------------------------- | ----- |
| `apps/server/src/lib/suggestionBroadcast.ts`    | Canonical `suggestion_update` and compatibility broadcast helper                                | \~65  |
| `apps/server/src/routes/suggestions.ts`         | Suggestion accept/dismiss/summary routes and validation helpers                                 | \~340 |
| `apps/server/tests/suggestionRoutes.test.ts`    | Route integration coverage for accept, dismiss, summary, validation, and `/api` prefix behavior | \~264 |
| `apps/server/tests/suggestionWebsocket.test.ts` | WebSocket hydrate, mutation broadcast, and compatibility-frame coverage                         | \~270 |

### Files Modified

| File                                          | Changes                                                                               |
| --------------------------------------------- | ------------------------------------------------------------------------------------- |
| `apps/server/src/server.ts`                   | Mounted the suggestion router and passed `SuggestionManager` into WebSocket handlers. |
| `apps/server/src/ws/handlers.ts`              | Added `suggestion_update` hydration on connect.                                       |
| `apps/server/src/lib/unsupportedRoutes.ts`    | Narrowed planned suggestion routes to the unshipped scan engines.                     |
| `apps/server/tests/unsupportedRoutes.test.ts` | Updated unsupported-route expectations for the shipped suggestion paths.              |
| `apps/server/tests/websocket.test.ts`         | Adjusted hydrate-frame expectations to account for the new suggestion snapshot.       |
| `apps/server/README_server.md`                | Documented the shipped Session 03 suggestion routes.                                  |
| `.spec_system/state.json`                     | Marked the session complete and recorded completion history.                          |
| `.spec_system/PRD/phase_18/PRD_phase_18.md`   | Advanced the Phase 18 tracker to Session 04 and recorded Session 03 completion.       |
| `.spec_system/PRD/PRD.md`                     | Updated the master PRD with the current Phase 18 progress.                            |
| `package.json`                                | Bumped the patch version from `0.1.138` to `0.1.139`.                                 |
| `package-lock.json`                           | Synced the root lockfile version fields to `0.1.139`.                                 |
| `README.md`                                   | Updated the version badge to `0.1.139`.                                               |

***

## Technical Decisions

1. **Single broadcast path**: route mutations flow through one helper so `suggestion_update` and compatibility frames cannot drift.
2. **Existing local boundary reuse**: the suggestion router lives inside the current local API chain so auth, CORS, rate limiting, and body-size limits stay consistent.

***

## Test Results

| Metric   | Value                                      |
| -------- | ------------------------------------------ |
| Tests    | 2550 root Vitest + 32 focused server tests |
| Passed   | 2550 + 32                                  |
| Coverage | Not collected in this validation run       |

***

## Lessons Learned

1. Hydration order matters, so the new `suggestion_update` frame is placed in the existing WebSocket connect sequence deliberately.
2. Compatibility frames can stay safe if they are derived from current manager state instead of carrying raw store payloads.

***

## Future Considerations

1. Session 04 should generate idle suggestions on hero-idle transitions.
2. Scan and project-scan route families remain intentionally unshipped and should stay classified as planned until their sessions land.

***

## Session Statistics

* **Tasks**: 22 completed
* **Files Created**: 4
* **Files Modified**: 12
* **Tests Added**: 2
* **Blockers**: 0 resolved


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://faction-os.gitbook.io/faction-os-docs/.spec_system/archive/sessions/phase18-session03-suggestion-routes-and-websocket-parity/implementation_summary.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
