- Use strict equality in PlanViewerDialog nullish check
- Add ref guard to remove non-null assertions in TaskPanel key handler
- Suppress false-positive solid/reactivity warning on stored callback

Vite OOMs during frontend transform on macOS runner with default ~2GB
heap limit. Set NODE_OPTIONS=--max-old-space-size=4096 to prevent this.

* task/run-23066104225:
  fix(ci): increase Node.js heap size for macOS release build

Remove the eager sendPlanContent() call from startPlanWatcher that
picked up pre-existing plan files (e.g. committed docs/plans/ files)
and displayed them as the current plan for brand-new tasks.

Fresh sessions now start planless; fs.watch picks up new plans written
by the agent. Restored/uncollapsed tasks already get their plans from
the ReadPlanContent IPC restore path in App.tsx.

Also untrack 3 stale plan files that were committed before the
docs/plans gitignore rule was added.

* task/plan-detection-does-not-work-as:
  fix(plans): don't show stale plans in fresh sessions

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Each toolbar button (Terminal + bookmarks) is now a separate column in
the keyboard navigation grid, so Alt+Left/Right cycles between them.