Per-agent "prompt cache break" diagnostic state, covering the system prompt, tool schema, and related cache diagnostics, can now be hydrated from and written back to a disk file named cache-break-state-*.json, so it survives restarts. This on-disk persistence is new, but it only runs in cowork, desktop, and remote contexts, gated behind a check that must resolve true before hydration or writes occur.
Prompt cache-break diagnostic state persists to disk, but only in cowork/desktop/remote contexts
Prompt cache-break diagnostics now persist to a file across restarts, but only in cowork, desktop and remote contexts.
Under the hoodTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Prompt CachingArea: what it touches
Internal ChangesKind: in v2.1.257,
Internal ChangesSection of the release