feat: VoiceCoach v2 — livekit-agents 1.5 personal voice assistant

Replaces pipecat 0.0.48 (6 manual patches, DuplicateIdentity reconnect storms)
with livekit-agents 1.5 SDK. New features:
- SvelteKit UI with live transcript, VAD ring, mode bar, vocal meter, history view
- SQLite session store with WAL mode (cross-session memory)
- Async SpeechBrain vocal/emotion analysis injected per turn
- Homelab tools: SSH/docker, Prometheus alerts, Home Assistant, SearXNG search
- OpenClaw LLM gateway preserved (qwen2.5:14b via Ollama)
- 4 modes: coaching, vent, practice, briefing

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

compose/hf-pdocker-01/voicecoach-v2/agent/server.py

@@ -0,0 +1,83 @@
+"""Token server + sessions REST API — FastAPI."""
+import asyncio
+import os
+from datetime import timedelta
+
+import uvicorn
+from fastapi import FastAPI, HTTPException
+from fastapi.middleware.cors import CORSMiddleware
+from livekit import api as livekit_api
+from pydantic import BaseModel
+
+import store
+
+LIVEKIT_API_KEY = os.environ["LIVEKIT_API_KEY"]
+LIVEKIT_API_SECRET = os.environ["LIVEKIT_API_SECRET"]
+LIVEKIT_PUBLIC_URL = os.getenv("LIVEKIT_PUBLIC_URL", "wss://voice.hobbs.farm")
+
+app = FastAPI(title="VoiceCoach API")
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+class TokenRequest(BaseModel):
+    identity: str = "jeremy"
+
+
+@app.on_event("startup")
+async def startup():
+    await store.init_db()
+
+
+@app.get("/health")
+async def health():
+    return {"status": "ok", "version": "2.0"}
+
+
+@app.post("/api/token")
+async def get_token(req: TokenRequest):
+    token = livekit_api.AccessToken(LIVEKIT_API_KEY, LIVEKIT_API_SECRET)
+    token.with_grants(livekit_api.VideoGrants(
+        room_join=True,
+        room="voicecoach",
+        can_publish=True,
+        can_subscribe=True,
+    ))
+    token.identity = req.identity
+    token.ttl = timedelta(hours=8)
+    return {"token": token.to_jwt(), "url": LIVEKIT_PUBLIC_URL}
+
+
+@app.get("/api/sessions")
+async def list_sessions(limit: int = 20):
+    return await store.get_sessions(limit=limit)
+
+
+@app.get("/api/sessions/{session_id}/messages")
+async def get_messages(session_id: str):
+    msgs = await store.get_session_messages(session_id)
+    if not msgs:
+        raise HTTPException(status_code=404, detail="Session not found")
+    return msgs
+
+
+@app.get("/api/profile/{key}")
+async def get_profile(key: str):
+    value = await store.get_profile(key)
+    if value is None:
+        raise HTTPException(status_code=404, detail="Key not found")
+    return {"key": key, "value": value}
+
+
+@app.put("/api/profile/{key}")
+async def set_profile_key(key: str, body: dict):
+    await store.set_profile(key, str(body.get("value", "")))
+    return {"ok": True}
+
+
+def run():
+    uvicorn.run(app, host="0.0.0.0", port=8080, log_level="info")