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>
2026-05-31 18:05:30 -05:00
parent 55f05a88d0
commit b3bef75981
24 changed files with 1660 additions and 0 deletions
@@ -0,0 +1,140 @@
+"""SQLite session store — WAL mode, aiosqlite."""
+import json
+import os
+import time
+from typing import Optional
+
+import aiosqlite
+
+DB_PATH = os.getenv("DB_PATH", "/data/sessions.db")
+
+
+async def init_db():
+    async with aiosqlite.connect(DB_PATH) as db:
+        await db.execute("PRAGMA journal_mode=WAL")
+        await db.executescript("""
+            CREATE TABLE IF NOT EXISTS sessions (
+                id TEXT PRIMARY KEY,
+                started_at REAL NOT NULL,
+                ended_at REAL,
+                mode TEXT DEFAULT 'coaching',
+                summary TEXT
+            );
+
+            CREATE TABLE IF NOT EXISTS messages (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                session_id TEXT NOT NULL,
+                role TEXT NOT NULL,
+                content TEXT NOT NULL,
+                vocal_energy REAL,
+                vocal_emotion TEXT,
+                ts REAL NOT NULL,
+                FOREIGN KEY(session_id) REFERENCES sessions(id)
+            );
+
+            CREATE TABLE IF NOT EXISTS profile (
+                key TEXT PRIMARY KEY,
+                value TEXT NOT NULL,
+                updated_at REAL NOT NULL
+            );
+        """)
+        await db.commit()
+
+
+async def create_session(session_id: str, mode: str = "coaching"):
+    async with aiosqlite.connect(DB_PATH) as db:
+        await db.execute(
+            "INSERT OR IGNORE INTO sessions (id, started_at, mode) VALUES (?, ?, ?)",
+            (session_id, time.time(), mode),
+        )
+        await db.commit()
+
+
+async def end_session(session_id: str, summary: Optional[str] = None):
+    async with aiosqlite.connect(DB_PATH) as db:
+        await db.execute(
+            "UPDATE sessions SET ended_at=?, summary=? WHERE id=?",
+            (time.time(), summary, session_id),
+        )
+        await db.commit()
+
+
+async def add_message(
+    session_id: str,
+    role: str,
+    content: str,
+    vocal_energy: Optional[float] = None,
+    vocal_emotion: Optional[str] = None,
+):
+    async with aiosqlite.connect(DB_PATH) as db:
+        await db.execute(
+            "INSERT INTO messages (session_id, role, content, vocal_energy, vocal_emotion, ts) VALUES (?,?,?,?,?,?)",
+            (session_id, role, content, vocal_energy, vocal_emotion, time.time()),
+        )
+        await db.commit()
+
+
+async def get_recent_context(limit: int = 3) -> str:
+    """Return a brief context string from the last N sessions for injection into system prompt."""
+    async with aiosqlite.connect(DB_PATH) as db:
+        async with db.execute(
+            "SELECT id, started_at, mode, summary FROM sessions WHERE ended_at IS NOT NULL ORDER BY ended_at DESC LIMIT ?",
+            (limit,),
+        ) as cur:
+            rows = await cur.fetchall()
+
+    if not rows:
+        return ""
+
+    parts = ["Recent session context:"]
+    for session_id, started_at, mode, summary in rows:
+        import datetime
+        dt = datetime.datetime.fromtimestamp(started_at).strftime("%Y-%m-%d")
+        if summary:
+            parts.append(f"- {dt} ({mode}): {summary}")
+    return "\n".join(parts)
+
+
+async def get_sessions(limit: int = 20) -> list[dict]:
+    async with aiosqlite.connect(DB_PATH) as db:
+        async with db.execute(
+            "SELECT id, started_at, ended_at, mode, summary FROM sessions ORDER BY started_at DESC LIMIT ?",
+            (limit,),
+        ) as cur:
+            rows = await cur.fetchall()
+    return [
+        {
+            "id": r[0],
+            "started_at": r[1],
+            "ended_at": r[2],
+            "mode": r[3],
+            "summary": r[4],
+        }
+        for r in rows
+    ]
+
+
+async def get_session_messages(session_id: str) -> list[dict]:
+    async with aiosqlite.connect(DB_PATH) as db:
+        async with db.execute(
+            "SELECT role, content, vocal_emotion, ts FROM messages WHERE session_id=? ORDER BY ts",
+            (session_id,),
+        ) as cur:
+            rows = await cur.fetchall()
+    return [{"role": r[0], "content": r[1], "vocal_emotion": r[2], "ts": r[3]} for r in rows]
+
+
+async def get_profile(key: str) -> Optional[str]:
+    async with aiosqlite.connect(DB_PATH) as db:
+        async with db.execute("SELECT value FROM profile WHERE key=?", (key,)) as cur:
+            row = await cur.fetchone()
+    return row[0] if row else None
+
+
+async def set_profile(key: str, value: str):
+    async with aiosqlite.connect(DB_PATH) as db:
+        await db.execute(
+            "INSERT OR REPLACE INTO profile (key, value, updated_at) VALUES (?,?,?)",
+            (key, value, time.time()),
+        )
+        await db.commit()