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

extensions/pi-interactive-shell/examples/skills/cursor-cli/SKILL.md

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+---
+name: cursor-cli
+description: Cursor CLI reference. Use when running Cursor in interactive_shell overlay or when user asks about Cursor CLI options.
+---
+
+# Cursor CLI
+
+## Commands
+
+| Command | Description |
+|---------|-------------|
+| `agent` | Start interactive Cursor session |
+| `agent "prompt"` | Interactive session with initial prompt |
+| `agent -p "prompt"` | Non-interactive print mode |
+| `agent ls` | List previous chats |
+| `agent resume` | Resume latest chat |
+| `agent --continue` | Continue previous session |
+| `agent --resume "chat-id"` | Resume a specific chat |
+
+## Key Flags
+
+| Flag | Description |
+|------|-------------|
+| `--mode plan` / `--plan` | Plan mode (clarify before coding) |
+| `--mode ask` | Ask mode (read-only exploration) |
+| `--model <model>` | Model override |
+| `--sandbox <enabled|disabled>` | Toggle sandbox behavior |
+| `--output-format text` | Output format for print mode workflows |
+
+## Mode Notes
+
+- **Interactive mode** (`agent`, `agent "prompt"`) is the right fit for `interactive_shell` overlays.
+- **Print mode** (`agent -p`) is non-interactive and better suited to direct shell/batch usage.
+
+## In interactive_shell
+
+Use structured spawn when you want the extension's shared spawn resolver/defaults/worktree support:
+
+```typescript
+interactive_shell({ spawn: { agent: "cursor" }, mode: "interactive" })
+interactive_shell({ spawn: { agent: "cursor", prompt: "Review the diffs" }, mode: "dispatch" })
+interactive_shell({ spawn: { agent: "cursor", worktree: true }, mode: "hands-free" })
+```
+
+Structured spawn launches Cursor via the configured `spawn.commands.cursor` executable (default: `agent`) and appends prompt text as Cursor's native interactive startup form (`agent "prompt"`). By default, spawn args include `--model composer-2-fast`, which selects Cursor's Composer 2 Fast model explicitly.
+
+Cursor remains **fresh/worktree only** in structured spawn. `fork` is Pi-only.
+
+For non-interactive print-mode tasks, prefer direct shell usage:
+
+```typescript
+bash({ command: 'agent -p "review these changes for security issues" --output-format text' })
+```