* feat(providers): add GPT-5.6 model family
* fix(chatgpt-web): resume temporary chat handoffs
* fix(codex): auto-merge discovery, filter denylist, revalidate on lifecycle
Restore live/GitHub auto-merge for Codex catalogs, drop models via
explicit denylist (GPT-5.4 family), and run scrub+live re-sync once on
first-start, app upgrade, or setup completion. Success log:
kill deprecated models complete.
* fix(codex): preserve live catalog reconciliation
Expose remote-only Codex models without dropping user custom entries, and complete lifecycle revalidation only after a successful internal sync. Keep credentialed self-fetches pinned to the active dashboard listener.
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Co-authored-by: backryun <backryun@daonlab.local>
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