Added email functionality

backend/app/database.py

@@ -101,6 +101,21 @@ UPDATE tags SET name = '#' || name WHERE name NOT LIKE '#%';
     (4, '''
 ALTER TABLE tags ADD COLUMN created_by TEXT REFERENCES users(id) ON DELETE SET NULL;
 CREATE INDEX IF NOT EXISTS idx_tags_created_by ON tags(created_by);
+'''),
+    (5, '''
+ALTER TABLE users ADD COLUMN email_verified INTEGER NOT NULL DEFAULT 0;
+UPDATE users SET email_verified = 1;
+
+CREATE TABLE IF NOT EXISTS email_verification_tokens (
+    id TEXT PRIMARY KEY,
+    user_id TEXT NOT NULL,
+    token_hash TEXT NOT NULL UNIQUE,
+    expires_at TEXT NOT NULL,
+    created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY(user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+CREATE INDEX IF NOT EXISTS idx_email_verification_tokens_user_id
+    ON email_verification_tokens(user_id);
 '''),
 ]