# Cowriting sandbox

This folder is the Extension Development Host's workspace (see
`.vscode/launch.json`): F5 opens it instead of the extension repo itself,
because VS Code won't open one folder in two windows and the repo is already
open in your dev window (#8).

Play here:

1. Type a sentence below — it renders with the human left-border as you type.
2. Highlight it → right-click → **Ask Claude to Edit Selection** — the
   replacement lands Claude-tinted.
3. Edit inside the tinted span — it splits character-precisely.
4. Save, then peek at `sandbox/.threads/playground.md.json` — the git-native
   attribution record. Reopen the file: spans re-resolve.
5. Highlight text → right-click → **Add Coauthoring Thread on Selection** for
   an anchored discussion thread.

---

The quick brown fox jumps over the lazy dog.