studio-v0.1.2

Fix Windows command execution, stale-daemon upgrades, and chat layout

- Windows: the agent's bash/glob tools spawned /bin/sh, which doesn't exist on
  Windows (ENOENT → no commands ran, no edits made). Add a cross-platform
  shellInvocation (cmd.exe on Windows), give glob a Node-based fallback, and
  tell the agent its OS in the system prompt.
- Stale daemon: the detached daemon survives reinstalls, so users got stuck on
  an old cloned version. ensureDaemon (CLI and app) now compares the live
  daemon's version to the installed one and restarts it on mismatch.
- Chat UI: single scroll container so resizing no longer duplicates the
  composer; add spacing between the conversation and the composer.
- Bump coderouter-cli 0.1.3 and Studio 0.1.2.

Co-authored-by: Cursor <cursoragent@cursor.com>