---
phase: 36-voice-pipeline-foundation
plan: 03
type: execute
wave: 2
depends_on: ["36-01", "36-02"]
files_modified:
  - server/src/routes/voice.ts
  - server/src/routes/chat-files.ts
  - server/src/routes/chat.ts
  - server/src/app.ts
  - server/src/__tests__/36-voice-routes.test.ts
autonomous: true
requirements:
  - VPIPE-03
  - VPIPE-06

must_haves:
  truths:
    - "POST /api/transcribe accepts audio file upload and returns { text, language? }"
    - "POST /api/synthesize accepts { text } body and returns audio/wav buffer"
    - "voiceMode from request body is injected as dual-output system prompt in stream endpoint"
    - "voiceMode is persisted to messageType column when message is saved"
    - "Old /transcribe endpoint is removed from chat-files.ts"
    - "Voice routes are mounted in app.ts"
  artifacts:
    - path: "server/src/routes/voice.ts"
      provides: "POST /api/transcribe and POST /api/synthesize endpoints"
      exports: ["voiceRoutes"]
    - path: "server/src/__tests__/36-voice-routes.test.ts"
      provides: "Integration tests for voice routes and voiceMode wiring"
      min_lines: 60
  key_links:
    - from: "server/src/routes/voice.ts"
      to: "server/src/services/voice-pipeline.ts"
      via: "voicePipelineService() import"
      pattern: "voicePipelineService"
    - from: "server/src/routes/chat.ts"
      to: "packages/shared/src/validators/chat.ts"
      via: "createMessageSchema preserves voiceMode on parse"
      pattern: "voiceMode"
    - from: "server/src/app.ts"
      to: "server/src/routes/voice.ts"
      via: "api.use(voiceRoutes())"
      pattern: "voiceRoutes"
---

<objective>
Create voice HTTP routes (transcribe + synthesize), wire voiceMode through the chat stream endpoint with dual-output prompt injection, mount in app.ts, and remove the old transcribe endpoint from chat-files.ts.

Purpose: VPIPE-03 requires the voice pipeline to be callable from any transport via HTTP. VPIPE-06 requires dual output (spoken prose + full markdown) triggered by voiceMode=full_voice in the stream endpoint.

Output: `server/src/routes/voice.ts` with two endpoints, updated `chat.ts` with voiceMode wiring, cleaned `chat-files.ts`, updated `app.ts` mount.
</objective>

<execution_context>
@$HOME/.claude/get-shit-done/workflows/execute-plan.md
@$HOME/.claude/get-shit-done/templates/summary.md
</execution_context>

<context>
@.planning/PROJECT.md
@.planning/ROADMAP.md
@.planning/STATE.md
@.planning/phases/36-voice-pipeline-foundation/36-RESEARCH.md
@.planning/phases/36-voice-pipeline-foundation/36-01-SUMMARY.md
@.planning/phases/36-voice-pipeline-foundation/36-02-SUMMARY.md

<interfaces>
<!-- From Plan 01 output -->
From server/src/services/voice-pipeline.ts:
```typescript
export function voicePipelineService(): {
  transcribe(buffer: Buffer, format: "webm" | "ogg" | "wav"): Promise<{ text: string; language?: string }>;
  synthesize(text: string, voiceId?: string): Promise<Buffer>;
  formatForVoice(text: string): string;
};
```

<!-- From Plan 02 output -->
From packages/shared/src/validators/chat.ts:
```typescript
export const createMessageSchema = z.object({
  role: z.enum(["user", "assistant", "system"]),
  content: z.string().min(1).max(100_000),
  agentId: z.string().uuid().optional(),
  messageType: z.string().optional(),
  voiceMode: z.enum(["text", "voice_input", "full_voice"]).optional(),
});
```

<!-- Existing code being modified -->
From server/src/routes/authz.ts:
```typescript
export function assertBoard(req: Request) {
  if (req.actor.type !== "board") throw forbidden("Board access required");
}
```

From server/src/attachment-types.ts:
```typescript
export const MAX_ATTACHMENT_BYTES = ...
```

From server/src/app.ts (mount pattern, line ~164):
```typescript
api.use(chatFileRoutes(db, opts.storageService));
api.use(nexusSettingsRoutes());
```

From server/src/routes/chat.ts (stream endpoint, lines 91-194):
```typescript
router.post("/conversations/:id/stream", async (req, res) => {
  assertBoard(req);
  const { content, agentId } = req.body;
  // ... builds messagesWithMemory array ...
  // ... streams tokens ...
  const message = await svc.addMessage(req.params.id!, {
    role: "assistant",
    content: fullContent.trim(),
    agentId: agentId || undefined,
  });
});
```

From server/src/routes/chat-files.ts (lines 297-386 to remove):
```typescript
// POST /transcribe — the old endpoint with inline audioUpload multer, runAudioUpload helper,
// and whisper-cpp/openai-whisper cascade. This entire block (lines 297-386) is replaced by voice.ts.
```
</interfaces>
</context>

<tasks>

<task type="auto" tdd="true">
  <name>Task 1: Create voice.ts routes and tests</name>
  <files>
    server/src/routes/voice.ts
    server/src/__tests__/36-voice-routes.test.ts
  </files>
  <read_first>
    server/src/routes/chat-files.ts
    server/src/routes/authz.ts
    server/src/attachment-types.ts
    server/src/services/voice-pipeline.ts
  </read_first>
  <behavior>
    - POST /transcribe with valid audio file returns 200 with { text: "...", language: "..." }
    - POST /transcribe without audio field returns 400 with { error: "Missing audio field" }
    - POST /synthesize with { text: "Hello" } returns 200 with Content-Type audio/wav
    - POST /synthesize without text returns 400 with { error: "text is required" }
    - Both endpoints call assertBoard(req) for auth
  </behavior>
  <action>
    1. Create `server/src/__tests__/36-voice-routes.test.ts` (RED):
       - Mock `../services/voice-pipeline.js` to return a mock service object
       - Mock `./authz.js` assertBoard to be a no-op
       - Test POST /transcribe with a Buffer body returns { text, language }
       - Test POST /transcribe without file returns 400
       - Test POST /synthesize with { text: "Hello" } returns audio/wav content-type
       - Test POST /synthesize without text returns 400

    2. Create `server/src/routes/voice.ts` (GREEN):
       ```typescript
       import { Router } from "express";
       import multer from "multer";
       import { assertBoard } from "./authz.js";
       import { voicePipelineService } from "../services/voice-pipeline.js";
       import { MAX_ATTACHMENT_BYTES } from "../attachment-types.js";

       export function voiceRoutes(): Router {
         const router = Router();
         const svc = voicePipelineService();
         const audioUpload = multer({
           storage: multer.memoryStorage(),
           limits: { fileSize: MAX_ATTACHMENT_BYTES, files: 1 },
         });

         // POST /api/transcribe — transcribe uploaded audio via VoicePipelineService
         router.post("/transcribe", async (req, res) => {
           assertBoard(req);
           await new Promise<void>((resolve, reject) =>
             audioUpload.single("audio")(req, res, (err) => (err ? reject(err) : resolve()))
           );
           const file = (req as any).file as { buffer: Buffer; mimetype: string } | undefined;
           if (!file) {
             res.status(400).json({ error: "Missing audio field" });
             return;
           }
           const fmt = file.mimetype.includes("ogg") ? "ogg"
             : file.mimetype.includes("wav") ? "wav"
             : "webm";
           const result = await svc.transcribe(file.buffer, fmt);
           res.json(result);
         });

         // POST /api/synthesize — synthesize text to speech via VoicePipelineService
         router.post("/synthesize", async (req, res) => {
           assertBoard(req);
           const { text, voiceId } = req.body as { text?: string; voiceId?: string };
           if (!text || typeof text !== "string") {
             res.status(400).json({ error: "text is required" });
             return;
           }
           const audioBuffer = await svc.synthesize(text, voiceId);
           res.setHeader("Content-Type", "audio/wav");
           res.send(audioBuffer);
         });

         return router;
       }
       ```
  </action>
  <verify>
    <automated>cd /opt/nexus && pnpm --filter @paperclipai/server test --run src/__tests__/36-voice-routes.test.ts</automated>
  </verify>
  <acceptance_criteria>
    - server/src/routes/voice.ts contains `export function voiceRoutes()`
    - server/src/routes/voice.ts contains `router.post("/transcribe"`
    - server/src/routes/voice.ts contains `router.post("/synthesize"`
    - server/src/routes/voice.ts contains `import { voicePipelineService }` from voice-pipeline service
    - server/src/routes/voice.ts contains `import { MAX_ATTACHMENT_BYTES }` from attachment-types
    - server/src/routes/voice.ts contains `assertBoard(req)` on both routes
    - server/src/routes/voice.ts contains `res.setHeader("Content-Type", "audio/wav")`
    - server/src/__tests__/36-voice-routes.test.ts exits 0
  </acceptance_criteria>
  <done>Voice routes exist with POST /transcribe (audio upload -> VoicePipelineService.transcribe) and POST /synthesize (text body -> VoicePipelineService.synthesize -> WAV response). Both authenticated via assertBoard.</done>
</task>

<task type="auto">
  <name>Task 2: Wire voiceMode in chat.ts stream, mount voice routes, remove old transcribe</name>
  <files>
    server/src/routes/chat.ts
    server/src/routes/chat-files.ts
    server/src/app.ts
  </files>
  <read_first>
    server/src/routes/chat.ts
    server/src/routes/chat-files.ts
    server/src/app.ts
    server/src/routes/voice.ts
  </read_first>
  <action>
    1. Modify `server/src/routes/chat.ts` — inject voiceMode into stream endpoint:
       - At line 93, change `const { content, agentId } = req.body;` to:
         ```typescript
         const { content, agentId, voiceMode } = req.body as {
           content: string; agentId?: string; voiceMode?: "text" | "voice_input" | "full_voice";
         };
         ```
       - After building `messagesWithMemory` array (after line 140 where user message is pushed), before the SSE headers block (before line 142), add:
         ```typescript
         // Inject dual-output formatting prompt when voice mode is full_voice (VPIPE-06)
         if (voiceMode === "full_voice") {
           messagesWithMemory.push({
             role: "system",
             content: [
               "Format your response with EXACTLY these two labeled sections:",
               "",
               "SPOKEN: [Natural speech prose only. No markdown. No bullet points. No code blocks. Max 2-3 sentences for spoken delivery.]",
               "",
               "DETAILED: [Your full response with all detail, code blocks, and markdown formatting.]",
             ].join("\n"),
           });
         }
         ```
       - At line 167-171, update the `svc.addMessage()` call to include voiceMode in messageType:
         ```typescript
         const message = await svc.addMessage(req.params.id!, {
           role: "assistant",
           content: fullContent.trim(),
           agentId: agentId || undefined,
           messageType: voiceMode === "full_voice" ? "voice_full"
             : voiceMode === "voice_input" ? "voice_input"
             : undefined,
         });
         ```

    2. Modify `server/src/routes/chat-files.ts` — remove old /transcribe endpoint:
       - Delete lines 297-386: the `audioUpload` multer instance, `runAudioUpload` helper function, and the entire `router.post("/transcribe", ...)` handler
       - The line `return router;` at line 388 should remain (it becomes the new end of the function)
       - Remove the `multer` import ONLY if no other route in the file uses multer (check: the file upload routes at top of file use multer too, so keep the import)

    3. Modify `server/src/app.ts` — mount voice routes:
       - Add import at top with other route imports:
         ```typescript
         import { voiceRoutes } from "./routes/voice.js";
         ```
       - Add mount line after `api.use(nexusSettingsRoutes());` (after line 165):
         ```typescript
         api.use(voiceRoutes());
         ```
  </action>
  <verify>
    <automated>cd /opt/nexus && pnpm --filter @paperclipai/server exec tsc --noEmit 2>&1 | head -30</automated>
  </verify>
  <acceptance_criteria>
    - server/src/routes/chat.ts contains `voiceMode` destructured from req.body
    - server/src/routes/chat.ts contains `if (voiceMode === "full_voice")`
    - server/src/routes/chat.ts contains `SPOKEN:` in the system prompt string
    - server/src/routes/chat.ts contains `DETAILED:` in the system prompt string
    - server/src/routes/chat.ts contains `messageType: voiceMode === "full_voice" ? "voice_full"`
    - server/src/routes/chat-files.ts does NOT contain `router.post("/transcribe"` (old endpoint removed)
    - server/src/app.ts contains `import { voiceRoutes }` from voice routes
    - server/src/app.ts contains `api.use(voiceRoutes())`
    - TypeScript compilation passes with no errors (`tsc --noEmit` exits 0)
  </acceptance_criteria>
  <done>
    voiceMode flows from client request body through the stream endpoint: (1) dual-output system prompt injected when full_voice, (2) voiceMode persisted to messageType column on assistant message save. Old /transcribe endpoint removed from chat-files.ts. Voice routes mounted in app.ts. TypeScript compiles clean.
  </done>
</task>

</tasks>

<verification>
- `pnpm --filter @paperclipai/server exec tsc --noEmit` exits 0
- `pnpm --filter @paperclipai/server test --run src/__tests__/36-voice-routes.test.ts` exits 0
- `grep -c "router.post(\"/transcribe\"" server/src/routes/chat-files.ts` returns 0 (old endpoint removed)
- `grep "voiceRoutes" server/src/app.ts` shows mount present
- `grep "voiceMode" server/src/routes/chat.ts` shows flag wired through stream endpoint
</verification>

<success_criteria>
Voice pipeline is fully callable via HTTP (POST /api/transcribe, POST /api/synthesize). voiceMode flag propagates from client request through the stream endpoint to message persistence. Dual output prompt injected for full_voice mode. Old transcribe endpoint removed from chat-files.ts. All routes mounted and TypeScript compiles clean.
</success_criteria>

<output>
After completion, create `.planning/phases/36-voice-pipeline-foundation/36-03-SUMMARY.md`
</output>
