Add 5 pi extensions: pi-subagents, pi-crew, rpiv-pi, pi-interactive-shell, pi-intercom

extensions/pi-crew/skills/ui-render-performance/SKILL.md

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+---
+name: ui-render-performance
+description: Non-blocking Pi TUI render workflow. Use when changing widgets, powerbar/statusbar segments, dashboard panes, overlays, snapshot caches, or live UI refresh behavior.
+---
+
+# ui-render-performance
+
+Use this skill for Pi/pi-crew TUI work.
+
+## Source patterns distilled
+
+- Pi TUI is synchronous immediate-mode/string rendering: `source/pi-mono/packages/coding-agent/src/modes/interactive/interactive-mode.ts`
+- Pi extension examples use event-driven state updates, not render-time loading.
+- pi-crew UI: `src/extension/register.ts`, `src/ui/run-dashboard.ts`, `src/ui/run-snapshot-cache.ts`, `src/ui/crew-widget.ts`, `src/ui/powerbar-publisher.ts`, `src/ui/render-scheduler.ts`
+
+## Rules
+
+- Treat every `render(width)` and widget/powerbar update as a hot synchronous path.
+- Render from in-memory snapshots only. Preload config, manifests, snapshots, agents, and mailbox counts asynchronously.
+- Use `RenderScheduler.schedule()` to coalesce renders; avoid direct repeated rendering.
+- Prefer `snapshotCache.get(runId)` in render paths. If a sync fallback is unavoidable, classify it as first-load/rare and document why.
+- Keep dashboard panes pure: accept a snapshot/model and format strings; do not call `fs.readFileSync`, `fs.readdirSync`, `fs.statSync`, or network APIs from pane render methods.
+- On session switch, cancel timers and ensure in-flight async preloads cannot update stale session UI.
+- Watch TTL interactions: a preload interval shorter than cache TTL prevents render-time refresh gaps.
+
+## Anti-patterns
+
+- Do not call `loadConfig()`, `manifestCache.list()`, or `refreshIfStale()` repeatedly inside `renderTick()` unless backed by preloaded frame data.
+- Do not do large JSON parsing or directory scans inside widget render/update functions.
+- Do not show stale health warnings for completed/cancelled/failed runs.
+
+## Verification
+
+```bash
+cd pi-crew
+npx tsc --noEmit
+node --experimental-strip-types --test test/unit/run-snapshot-cache.test.ts test/unit/crew-widget.test.ts test/unit/powerbar-publisher.test.ts test/unit/run-dashboard.test.ts
+npm test
+```