CREATE TABLE IF NOT EXISTS update_jobs (
  id TEXT PRIMARY KEY,
  status TEXT NOT NULL CHECK(status IN ('queued','downloading','verifying','staged','backing_up','applying','completed','failed','cancelled')),
  version TEXT NOT NULL,
  platform TEXT NOT NULL,
  release_url TEXT,
  asset_name TEXT,
  asset_url TEXT NOT NULL,
  expected_sha256 TEXT,
  actual_sha256 TEXT,
  download_path TEXT,
  backup_path TEXT,
  size_bytes INTEGER,
  error_message TEXT,
  created_at INTEGER NOT NULL,
  updated_at INTEGER NOT NULL,
  completed_at INTEGER
) STRICT;
CREATE INDEX IF NOT EXISTS update_jobs_status_idx ON update_jobs(status, created_at);