Add Python manager: FastAPI backend + web UI

- main.py: FastAPI app with profile CRUD, start/stop, send message endpoints
- profiles.py: asyncio bot lifecycle using simplex-chat Python SDK
- db.py: SQLite registry tracking profiles, types, config, addresses
- templates/: Jinja2 + HTMX web UI
  - login.html: token-based auth
  - index.html: profile list with live status polling, create dialog
  - profile.html: per-bot dashboard with QR code, contacts/groups, event log, send form
- requirements.txt: fastapi, uvicorn, jinja2, simplex-chat
- start.sh: one-command startup with venv bootstrap

Bot types: echo, broadcast, support (business address), directory, deadmans
Run: cd manager && MANAGER_TOKEN=secret ./start.sh

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

manager/db.py

@@ -0,0 +1,66 @@
+"""Profile registry — SQLite database for manager state."""
+
+import sqlite3
+import json
+from pathlib import Path
+from typing import Any
+
+DB_PATH = Path(__file__).parent / "data" / "manager.db"
+
+
+def get_conn() -> sqlite3.Connection:
+    DB_PATH.parent.mkdir(parents=True, exist_ok=True)
+    conn = sqlite3.connect(DB_PATH)
+    conn.row_factory = sqlite3.Row
+    conn.execute("PRAGMA journal_mode=WAL")
+    return conn
+
+
+def init_db() -> None:
+    with get_conn() as conn:
+        conn.executescript("""
+            CREATE TABLE IF NOT EXISTS profiles (
+                id          INTEGER PRIMARY KEY AUTOINCREMENT,
+                name        TEXT    NOT NULL UNIQUE,
+                bot_type    TEXT    NOT NULL,
+                db_prefix   TEXT    NOT NULL UNIQUE,
+                config      TEXT    NOT NULL DEFAULT '{}',
+                created_at  TEXT    NOT NULL DEFAULT (datetime('now')),
+                address     TEXT
+            );
+        """)
+
+
+def list_profiles() -> list[dict]:
+    with get_conn() as conn:
+        rows = conn.execute("SELECT * FROM profiles ORDER BY id").fetchall()
+    return [dict(r) for r in rows]
+
+
+def get_profile(profile_id: int) -> dict | None:
+    with get_conn() as conn:
+        row = conn.execute("SELECT * FROM profiles WHERE id=?", (profile_id,)).fetchone()
+    return dict(row) if row else None
+
+
+def create_profile(name: str, bot_type: str, config: dict) -> dict:
+    safe = name.lower().replace(" ", "_")
+    db_prefix = f"data/bots/{safe}"
+    Path(db_prefix).parent.mkdir(parents=True, exist_ok=True)
+    with get_conn() as conn:
+        conn.execute(
+            "INSERT INTO profiles (name, bot_type, db_prefix, config) VALUES (?,?,?,?)",
+            (name, bot_type, db_prefix, json.dumps(config)),
+        )
+        row = conn.execute("SELECT * FROM profiles WHERE name=?", (name,)).fetchone()
+    return dict(row)
+
+
+def update_address(profile_id: int, address: str) -> None:
+    with get_conn() as conn:
+        conn.execute("UPDATE profiles SET address=? WHERE id=?", (address, profile_id))
+
+
+def delete_profile(profile_id: int) -> None:
+    with get_conn() as conn:
+        conn.execute("DELETE FROM profiles WHERE id=?", (profile_id,))