v0.2.1

• Faster, especially on Windows: GitHub requests go over one kept-alive HTTPS connection with gh's token instead of a gh process each (gh is the fallback); each 4-second poll starts one git process instead of about six; the slow open pull request list for branch badges loads in the background; the inbox uses GraphQL instead of gh search. On Windows: overview 250 → 60 ms, branches 410 → 165 ms, pull requests 3.9 → 1.5 s, inbox 1.7 → 1.0 s.
• The timeline loads first: at most two plugin calls run per server, and reads wait a moment after a session switch, so the panel no longer holds the app's request queue while the timeline loads its messages (worst switch 1.6 s → 0.5 s with remote-like latency).
• Right-click menu on mentions: #123, owner/repo#123 and GitHub links in the timeline open a menu: open, copy link or reference, start working, ask the agent, close with a reason or reopen, check out or merge.
• No lag after writes: merges, closes and reopens show at once (in the tab and in lists, even before GitHub's search catches up), and comments, reviews, edits, CI re-runs, agent decisions and git actions refresh their views immediately. A merged pull request's tab hides Merge and Checkout.