Fusion Backend Dev

Teaches client-side rendering (CSR) for React applications. Use when building highly interactive apps where SEO is not a priority and the UI is driven by user actions.

Apply when designing or modifying a BFF (Backend-for-Frontend) layer, middleware, or API proxy for a headless VTEX storefront. Covers BFF middleware architecture, public vs private API classification, VtexIdclientAutCookie management, API key protection, and secure request proxying. Use for any headless commerce project that must never expose VTEX_APP_KEY or call private VTEX APIs from the browser.

Use this skill when implementing player input with Unreal Engine's Enhanced Input system. Also use when the user mentions 'Enhanced Input', 'input', 'input action', 'InputAction', 'mapping context', 'InputMappingContext', 'input binding', 'key binding', 'input trigger', 'input modifier', 'gamepad', or 'keyboard'. Covers ETriggerEvent, built-in triggers (Hold, Tap, Pulse, ChordAction, Combo), built-in modifiers (DeadZone, Scalar, Negate, SwizzleAxis), and custom trigger/modifier authoring. See references/input-action-reference.md for the full catalogue. For UI input modes, see ue-ui-umg-slate.

Valtio proxy state management for React and vanilla JavaScript. Use when creating reactive state, managing application state, or working with proxy-based state management.

Initialize a new Ruflo project with MCP tools, hooks, and agent configuration. Use when setting up Ruflo in a fresh repo, or when the user says "init ruflo", "set up ruflo", or asks how to bootstrap the MCP server, hooks, and agent configs from scratch.

Use the Docyrus CLI (`docyrus`) to interact with the Docyrus platform from the terminal. Use when the user asks to authenticate, list apps, query or manage data records (`ds`), manage dev app data source schema objects (`studio`) including data sources, fields, enums, data views, forms, webforms, HTML/PDF export templates, and email templates, manage automations and their triggers/action nodes (`automation`), build or edit custom AI agents and their sub-resources (`agent`), set an app's AI agent context or manage app-scoped AI tools (`apps`), list tenant email accounts and send emails (`messaging`), manage tenant account settings — brands, the current user's profile, and tenant regional/formatting preferences (`account`), discover and call connectors (`connect`), send API requests, switch tenants/accounts, discover tenant OpenAPI specs, drive browser automation (`browser`), chat with platform agents (`docy`), launch the pi cowork/coding agents (`opsy`/`cody`/`coder`), run the agent bri