user-profiles: Cross-Channel-Identität mit Registrierung, Login, Profil + WhatsApp/Telegram-Flow

init_db.py

@@ -39,6 +39,28 @@ CREATE INDEX IF NOT EXISTS idx_submissions_channel ON submissions(channel);
 CREATE INDEX IF NOT EXISTS idx_submissions_category ON submissions(category);
 CREATE INDEX IF NOT EXISTS idx_knowledge_key ON knowledge(key);
 CREATE INDEX IF NOT EXISTS idx_knowledge_category ON knowledge(category);
+
+-- Cross-channel user profiles (phone = universal ID)
+CREATE TABLE IF NOT EXISTS users (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    phone TEXT UNIQUE NOT NULL,
+    name TEXT,
+    password_hash TEXT,
+    profile_pic TEXT,
+    verified INTEGER DEFAULT 0,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS user_sessions (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    user_id INTEGER NOT NULL REFERENCES users(id),
+    token TEXT UNIQUE NOT NULL,
+    channel TEXT DEFAULT 'web',
+    expires_at TIMESTAMP NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+CREATE INDEX IF NOT EXISTS idx_user_sessions_token ON user_sessions(token);
+CREATE INDEX IF NOT EXISTS idx_users_phone ON users(phone);
 """
 
 SAMPLE_SUBMISSIONS = [