superpowers-bridge v1.9.0

[1.9.0] - 2026-07-03

Changed

• Restored Spec Kit as the sole workflow owner by replacing the old controller
  with a read-only implementation readiness gate and removing post-task,
  post-implementation, and post-convergence Superb stages.
• Reduced Superb's logical Superpowers contract to five directly used skills;
  complete-plugin installation remains an explicit distribution compatibility
  option rather than a runtime dependency claim.
• Removed Superb lifecycle status synchronization, temporary evidence archives,
  and obsolete orchestration design notes.
• Narrowed critique, debug, respond, and finish to explicit read/write boundaries.