CREATE TABLE IF NOT EXISTS webauthn_credentials (
    id TEXT PRIMARY KEY,
    user_id INTEGER NOT NULL REFERENCES users(id),
    public_key BLOB NOT NULL,
    attestation_type TEXT NOT NULL,
    aaguid BLOB,
    sign_count INTEGER DEFAULT 0,
    name TEXT DEFAULT '',
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id)
);
CREATE INDEX IF NOT EXISTS idx_webauthn_user ON webauthn_credentials(user_id);