feat: add Antigravity agent skill for Vite+ (vp CLI)

.agents/skills/vite-plus/SKILL.md

@@ -0,0 +1,72 @@
+---
+name: vite-plus
+description: >-
+  Use the Vite+ (vp) CLI toolchain to run, build, test, lint, format, and type check web applications.
+---
+
+# Vite+ (`vp` CLI) Web Development Skill
+
+This skill allows the agent to build, run, format, lint, and type check web projects using the Vite+ (`vp`) toolchain. 
+
+> [!IMPORTANT]
+> For any Vite+ project, the agent **MUST** prefer using the `vp` CLI commands over traditional `npm`, `yarn`, `pnpm`, or custom `package.json` scripts (like `npm run build`, `npm run lint`, etc.).
+
+## Core Commands
+
+The `vp` tool consolidates multiple frontend development utilities into one command-line interface:
+
+### 1. Unified Project Checking (`vp check`)
+Instead of running separate formatting, linting, and TypeScript checks, use `vp check` to run all static checks simultaneously.
+- **Run all checks:**
+  ```bash
+  vp check
+  ```
+- **Automatically fix linting and formatting issues:**
+  ```bash
+  vp check --fix
+  ```
+- **Skip specific checks:**
+  ```bash
+  vp check --no-fmt
+  vp check --no-lint
+  ```
+
+### 2. Project Production Build (`vp build`)
+Build the project for production using the Rolldown/Oxc toolchain.
+- **Run build:**
+  ```bash
+  vp build
+  ```
+
+### 3. Local Development Server (`vp dev`)
+Run the local Vite-based development server.
+- **Run dev server:**
+  ```bash
+  vp dev
+  ```
+
+### 4. Run Tests (`vp test`)
+Execute tests in the project using Vitest.
+- **Run all tests:**
+  ```bash
+  vp test
+  ```
+
+### 5. Install Dependencies (`vp install`)
+Installs project dependencies using the auto-detected package manager.
+- **Install packages:**
+  ```bash
+  vp install
+  ```
+
+### 6. Dynamic Script Execution (`vp run`)
+Run any custom package script or command with monorepo dependency caching.
+- **Run custom script:**
+  ```bash
+  vp run <command>
+  ```
+
+## Common Pitfalls
+
+- **Using npm scripts directly:** Do not use `npm run build` or `npm run lint`. Instead, use `vp build` and `vp check`.
+- **Target Directories:** Always ensure you are running `vp` commands in the directory containing the Vite+ config (e.g., the `web` directory in monorepos).