Method reopenIfReplaced

src/index.ts:249–264

* Heal a stale database handle in place. If `.codegraph/` was removed and * recreated at the SAME path while this instance held the DB open — a git * worktree removed and re-added, or `rm -rf .codegraph` + `codegraph init` — * our open fd points at the now-unlinked inode and can never see t

()

   * file can't be unlinked there, and st_ino is unreliable).
   */
  reopenIfReplaced(): boolean {
    if (!this.db.isReplacedOnDisk()) return false;
    const dbPath = this.db.getPath();
    // Open the live file FIRST — if that throws (e.g. mid-recreate), the old
    // handle stays in place and the caller retries on the next query, rather
    // than leaving this instance with no connection at all.
    const fresh = DatabaseConnection.open(dbPath);
    const stale = this.db;
    this.db = fresh;
    this.queries = new QueryBuilder(fresh.getDb());
    this.wireLayers();
    // Releasing the dead handle also frees the leaked db/-wal/-shm fds that were
    // pinning the unlinked inode (#925).
    try { stale.close(); } catch { /* the old inode is gone; closing just frees fds */ }
    return true;
  }

  // ===========================================================================
  // Lifecycle Methods