Implement token-based admin login and remove WebAuthn support

src/lib/db.ts

@@ -26,19 +26,6 @@ db.exec(`
     moderation_note TEXT
   );
 
-  CREATE TABLE IF NOT EXISTS webauthn_credentials (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    credential_id TEXT NOT NULL UNIQUE,
-    public_key BLOB NOT NULL,
-    counter INTEGER NOT NULL DEFAULT 0,
-    user_id TEXT NOT NULL,
-    user_name TEXT NOT NULL,
-    backed_up INTEGER NOT NULL DEFAULT 0,
-    transports TEXT,
-    created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
-    last_used_at TEXT
-  );
-
   CREATE TABLE IF NOT EXISTS admin_sessions (
     id TEXT PRIMARY KEY,
     user_id TEXT NOT NULL,
@@ -46,14 +33,6 @@ db.exec(`
     expires_at TEXT NOT NULL
   );
 
-  CREATE TABLE IF NOT EXISTS webauthn_challenges (
-    id TEXT PRIMARY KEY,
-    challenge TEXT NOT NULL,
-    type TEXT NOT NULL,
-    created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
-    expires_at TEXT NOT NULL
-  );
-
   CREATE TABLE IF NOT EXISTS rate_limit (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
     ip_hash TEXT NOT NULL,
@@ -73,7 +52,6 @@ db.exec(`
   CREATE INDEX IF NOT EXISTS idx_entries_created ON guestbook_entries(created_at);
   CREATE INDEX IF NOT EXISTS idx_rate_limit_ip ON rate_limit(ip_hash, created_at);
   CREATE INDEX IF NOT EXISTS idx_sessions_expires ON admin_sessions(expires_at);
-  CREATE INDEX IF NOT EXISTS idx_challenges_expires ON webauthn_challenges(expires_at);
 `);
 
 export default db;