Cian Johnston ef2eb9f8d2 fix: strip invisible Unicode from prompt content (#23525) ...

- Add `SanitizePromptText` stripping ~24 invisible Unicode codepoints
and collapsing excessive newlines
- Apply at write and read paths for defense-in-depth
- Frontend: warn in both prompt textareas when invisible characters
detected
- Explicit codepoint list (not blanket `unicode.Cf`) to avoid breaking
flag emoji
- 34 Go tests + idempotency meta-test, 11 TS unit tests, 4 Storybook
stories

> This PR was created with the help of Coder Agents, and was reviewed by my human.

2026-03-25 14:09:24 +00:00

..

chatd

fix: strip invisible Unicode from prompt content (#23525)

2026-03-25 14:09:24 +00:00

gitsync

chore: move chatd and related packages to /x/ subpackage (#23445)

2026-03-23 17:34:43 +00:00