CREATE TABLE IF NOT EXISTS project_tokens (
  id          TEXT PRIMARY KEY,
  project_id  TEXT NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
  name        TEXT NOT NULL,
  token_hash  TEXT NOT NULL UNIQUE,
  scope       TEXT NOT NULL,
  created_by  TEXT REFERENCES users(id) ON DELETE SET NULL,
  created_at  TEXT NOT NULL,
  revoked_at  TEXT
);

CREATE INDEX IF NOT EXISTS idx_project_tokens_project ON project_tokens(project_id);
CREATE INDEX IF NOT EXISTS idx_project_tokens_hash ON project_tokens(token_hash);