Edits are saved on an 800ms debounce, so leaving a book within that
window lost the latest changes. Flush a dirty book before openBook /
closeBook swap state (covers All books, open-another, Cmd+N), and add a
window close-request handler that saves before destroying on quit.
Claude-Session: https://claude.ai/code/session_01RzTWrLiy4zGuw2hZSQGamk
Route save_book, write_file, write_bytes through a shared atomic_write
helper: write to a temp file, fsync, then rename into place so a crash
mid-write can never leave a truncated or empty manuscript. Rotate the
prior copy to .bak for manuscripts (not exports) so one good copy
always survives.
Claude-Session: https://claude.ai/code/session_01RzTWrLiy4zGuw2hZSQGamk
proof_text loaded the dictionary and ran spell/grammar checks
synchronously inside an async command, blocking an async-runtime worker
and holding the engine mutex for the whole call. Move the work to
spawn_blocking so IPC stays responsive under load.
pj
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