Elyra Conductor v0.8.0

Added

• 🌳 Git worktrees — parallel branches, one agent each. A new Worktrees button
  (and command palette entry) opens a panel to create isolated worktrees — separate
  checkouts that share the repo's .git — and open each as a terminal or an Elyra
  agent. Run several agents on different branches at once without collisions.
• 🤖 Agent command center. Each Elyra agent reports a coarse state, surfaced as a
  per-tab dot (working / waiting on you / exited) and a pill in the tab strip showing,
  at a glance, how many agents are working and — the signal that matters — how many are
  waiting for your input. Click to jump straight to one; a notification fires when an
  agent starts waiting while you're looking elsewhere.
• ✅ GitHub PR status per branch. With an authenticated gh, each worktree shows its
  open PR — number, CI check rollup (pass/fail/pending) and review state — linking to
  GitHub. Open PRs without a worktree are listed too, so you can check a PR out as a
  worktree (terminal or agent) in one click; PR branches are tracked from origin
  with their real contents.

Fixed

• Context menus near the right/bottom edge of the screen now stay fully on-screen.
• The git panel now closes on Escape like the other modals.