Not a fix — I could not find the cause by reading, and shipping a guess dressed as
one is worse than saying so.
What reading DID settle, and it removes two of the three candidates:
- The end-of-turn refresh cannot be it. `reloadFile` sets `originalContent` and
clears `isDirty`, so no refresh can produce the dirty dot in the screenshot.
- Nothing in the app types into the page: no `execCommand('insertText')`, no
synthetic keyboard events, no clipboard writes anywhere near the editor.
That leaves Monaco's own change event, which means the model was edited the way a
paste or a programmatic `executeEdits` edits it. Neither is identifiable from a
screenshot taken afterwards, which is why this needs to be caught in the act.
`reportSuspiciousEdit` logs any insertion over 200 characters arriving while the
editor does NOT have focus, with an Error constructed at that moment so the stack
names the caller. A person cannot type 200 characters into an editor they are not
focused on; whatever does will be in that trace.
It prevents nothing and changes no behaviour. Delete it once the cause is known.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
pastilhasandClaude Opus 5
fc8d02e8e1