Add skills library and plugin configs for Claude, Cursor, Codex, and OpenCode

- Add frontend-dev, fullstack-dev, and android-native-dev skills
- Add plugin configs for Claude Code, Cursor, Codex, and OpenCode
- Add English and Chinese READMEs with installation instructions
- Add .gitignore

.opencode/INSTALL.md

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+# Installing MiniMax Skills for OpenCode
+
+## Prerequisites
+
+- [OpenCode.ai](https://opencode.ai) installed
+
+## Installation
+
+Add minimax-skills to the `plugin` array in your `opencode.json` (global or project-level):
+
+```json
+{
+  "plugin": ["minimax-skills@git+https://github.com/MiniMax-AI/skills.git"]
+}
+```
+
+Restart OpenCode. That's it — the plugin auto-installs and registers all skills.
+
+Verify by asking: "List available skills"
+
+## Available Skills
+
+- **frontend-dev** — Frontend development with UI design, animations, AI-generated media assets
+- **fullstack-dev** — Full-stack backend architecture and frontend-backend integration
+- **android-native-dev** — Android native application development with Material Design 3
+
+## Usage
+
+Use OpenCode's native `skill` tool:
+
+```
+use skill tool to list skills
+use skill tool to load minimax-skills/frontend-dev
+```
+
+## Updating
+
+MiniMax Skills updates automatically when you restart OpenCode.
+
+To pin a specific version:
+
+```json
+{
+  "plugin": ["minimax-skills@git+https://github.com/MiniMax-AI/skills.git#v1.0.0"]
+}
+```
+
+## Troubleshooting
+
+### Plugin not loading
+
+1. Check logs: `opencode run --print-logs "hello" 2>&1 | grep -i minimax`
+2. Verify the plugin line in your `opencode.json`
+3. Make sure you're running a recent version of OpenCode
+
+### Skills not found
+
+1. Use `skill` tool to list what's discovered
+2. Check that the plugin is loading (see above)
+
+### Tool mapping
+
+When skills reference Claude Code tools:
+- `TodoWrite` → `todowrite`
+- `Task` with subagents → `@mention` syntax
+- `Skill` tool → OpenCode's native `skill` tool
+- File operations → your native tools
+
+## Getting Help
+
+- Report issues: https://github.com/MiniMax-AI/skills/issues

.opencode/plugins/minimax-skills.js

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+/**
+ * MiniMax Skills plugin for OpenCode.ai
+ *
+ * Registers the skills directory and injects bootstrap context via system prompt transform.
+ */
+
+import path from 'path';
+import fs from 'fs';
+import os from 'os';
+import { fileURLToPath } from 'url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
+export const MiniMaxSkillsPlugin = async () => {
+  const homeDir = os.homedir();
+  const skillsDir = path.resolve(__dirname, '../../skills');
+  const envConfigDir = process.env.OPENCODE_CONFIG_DIR
+    ? path.resolve(process.env.OPENCODE_CONFIG_DIR.replace(/^~/, homeDir))
+    : null;
+  const configDir = envConfigDir || path.join(homeDir, '.config/opencode');
+
+  // Discover available skills by scanning the skills directory
+  const getAvailableSkills = () => {
+    if (!fs.existsSync(skillsDir)) return [];
+    return fs.readdirSync(skillsDir, { withFileTypes: true })
+      .filter(d => d.isDirectory() && fs.existsSync(path.join(skillsDir, d.name, 'SKILL.md')))
+      .map(d => d.name);
+  };
+
+  const getBootstrapContent = () => {
+    const skills = getAvailableSkills();
+    if (skills.length === 0) return null;
+
+    const skillList = skills.map(s => `- \`${s}\``).join('\n');
+
+    return `<IMPORTANT>
+You have MiniMax Skills available.
+
+**Available skills:**
+${skillList}
+
+**Tool Mapping for OpenCode:**
+When skills reference tools you don't have, substitute OpenCode equivalents:
+- \`TodoWrite\` → \`todowrite\`
+- \`Task\` tool with subagents → Use OpenCode's subagent system (@mention)
+- \`Skill\` tool → OpenCode's native \`skill\` tool
+- \`Read\`, \`Write\`, \`Edit\`, \`Bash\` → Your native tools
+
+**Skills location:**
+MiniMax skills are in \`${configDir}/skills/minimax-skills/\`
+Use OpenCode's native \`skill\` tool to list and load skills.
+</IMPORTANT>`;
+  };
+
+  return {
+    // Inject skills path into live config so OpenCode discovers skills
+    config: async (config) => {
+      config.skills = config.skills || {};
+      config.skills.paths = config.skills.paths || [];
+      if (!config.skills.paths.includes(skillsDir)) {
+        config.skills.paths.push(skillsDir);
+      }
+    },
+
+    // Use system prompt transform to inject bootstrap
+    'experimental.chat.system.transform': async (_input, output) => {
+      const bootstrap = getBootstrapContent();
+      if (bootstrap) {
+        (output.system ||= []).push(bootstrap);
+      }
+    }
+  };
+};