Constant MIGRATION_002 

const MIGRATION_002: &str = r#"
-- Remove access_token column from users table
-- Tokens are now stored in secure storage (system keyring)

-- SQLite doesn't support DROP COLUMN in older versions, so we recreate the table
CREATE TABLE IF NOT EXISTS users_new (
    id TEXT PRIMARY KEY,
    server_id TEXT NOT NULL REFERENCES servers(id) ON DELETE CASCADE,
    username TEXT NOT NULL,
    is_active INTEGER DEFAULT 0,
    created_at TEXT DEFAULT CURRENT_TIMESTAMP,
    last_login_at TEXT,
    UNIQUE(server_id, username)
);

-- Copy existing data (excluding access_token)
INSERT OR IGNORE INTO users_new (id, server_id, username, is_active, created_at, last_login_at)
SELECT id, server_id, username, is_active, created_at, last_login_at FROM users;

-- Drop old table and rename new one
DROP TABLE IF EXISTS users;
ALTER TABLE users_new RENAME TO users;
"#;

Migration to remove access_token column from users table Tokens are now stored in the system keyring (or encrypted file fallback)