Improvements

• JSON recovery progress: Report retry, recovery, and safety-pause status on stderr during fx ask --json while keeping stdout parseable
• Notification sounds: Use clearer 48 kHz AAC cues with full tails and the intended volume differences between actions

Bug Fixes

• Memory clearing: Succeed when memory is already absent, but report real deletion failures instead of claiming memories were cleared
• Background URLs: Refuse /background open for stopped or stale tasks so saved URLs cannot open an unrelated process after port reuse
• Model catalogs: Reject malformed catalog responses with a nonzero exit instead of treating them as an empty model list
• Skill creation: Show invalid /skills create names inline and keep the current session, transcript, and composer usable
• GLM 5.2 responses: Restore responses for fx login sessions without changing requests for other models