Claude Code integration for SideFX Houdini — Rust rewrite of claudini. claudini2 ships three single-binary MCP servers (houdini-mcp, screenshot-mcp, sm-mcp) plus a headless session-manager daemon (sm-daemon) and the in-Houdini JSON-RPC bridge. No Python venv setup: the four Rust executables + the lightweight houdini-bridge Python package run directly on Houdini's bundled interpreter. Features: - Single-binary MCP servers (no uv / no .venv on the Claude Code side) - Headless HTTP session-manager daemon with multi-agent session isolation - Package-aware skill + docs discovery: any HPM package declaring a sibling `claude/` dir contributes skills to Claude Code at session start - In-Houdini bridge for get_scene_info / create_node / execute_python / APEX inspection - Desktop-managed Claude Code plugin marketplace registration via TT_CLAUDE_PLUGINS Typical flow: 1. Install via TumbleTrove Desktop 2. Houdini picks up $HPM_PACKAGE_ROOT/houdini-bridge via HOUDINI_PATH 3. TumbleTrove Desktop generates the Claude Code marketplace.json and registers it in ~/.claude/plugins/known_marketplaces.json 4. Claude Code session loads /claudini2:* skills and mcp__plugin_claudini2_* tool surface