feat(skills): add skills infrastructure using Claude Code plugin system

nx.json

@@ -34,15 +34,17 @@
       "exclude": [
         "packages/commands/agnostic/*",
         "packages/agents/agnostic/*",
-        "packages/commands/typescript/*"
+        "packages/commands/typescript/*",
+        "packages/skills/agnostic/*"
       ]
     },
     {
       "plugin": "@nx/js/typescript",
       "include": [
         "packages/commands/agnostic/*",
         "packages/agents/agnostic/*",
-        "packages/commands/typescript/*"
+        "packages/commands/typescript/*",
+        "packages/skills/agnostic/*"
       ],
       "options": {
         "typecheck": {

packages/ai-toolkit-nx-claude/generators.json

@@ -15,6 +15,16 @@
       "schema": "./dist/generators/add-agent/schema.json",
       "description": "Add a new Claude Code agent to existing or new packages"
     },
+    "add-skill": {
+      "factory": "./dist/generators/add-skill/generator",
+      "schema": "./dist/generators/add-skill/schema.json",
+      "description": "Add a new Claude Code skill compatible with the plugin system"
+    },
+    "init-plugin": {
+      "factory": "./dist/generators/init-plugin/generator",
+      "schema": "./dist/generators/init-plugin/schema.json",
+      "description": "Initialize a Claude Code plugin structure for distributing skills, commands, and agents"
+    },
     "hooks": {
       "factory": "./dist/generators/hooks/generator",
       "schema": "./dist/generators/hooks/schema.json",

packages/ai-toolkit-nx-claude/package.json

@@ -49,8 +49,10 @@
             "packages/ai-toolkit-nx-claude/src/scripts/claude-plus/index.ts",
             "packages/ai-toolkit-nx-claude/src/generators/add-agent/generator.ts",
             "packages/ai-toolkit-nx-claude/src/generators/add-command/generator.ts",
+            "packages/ai-toolkit-nx-claude/src/generators/add-skill/generator.ts",
             "packages/ai-toolkit-nx-claude/src/generators/addons/generator.ts",
             "packages/ai-toolkit-nx-claude/src/generators/hooks/generator.ts",
+            "packages/ai-toolkit-nx-claude/src/generators/init-plugin/generator.ts",
             "packages/ai-toolkit-nx-claude/src/generators/init/generator.ts"
           ],
           "tsConfig": "packages/ai-toolkit-nx-claude/tsconfig.lib.json",

packages/ai-toolkit-nx-claude/src/generators/add-skill/files/__name__.md.template

@@ -0,0 +1,45 @@
+---
+name: <%= name %>
+description: <%= description %>
+<% if (allowedTools) { %>allowed-tools: <%= allowedTools %>
+<% } %>---
+
+# <%= name.split('-').map(w => w.charAt(0).toUpperCase() + w.slice(1)).join(' ') %> Skill
+
+<!-- TODO: Add detailed instructions for this skill -->
+
+## When to Use
+
+Activate this skill when:
+
+- <!-- TODO: Describe trigger conditions -->
+- <!-- TODO: Add more conditions -->
+
+## Instructions
+
+<!-- TODO: Add step-by-step guidance for Claude -->
+
+### Step 1: [First Action]
+
+<!-- TODO: Describe the first step -->
+
+### Step 2: [Second Action]
+
+<!-- TODO: Describe the second step -->
+
+## Output Format
+
+<!-- TODO: Describe expected output format -->
+
+```markdown
+## Summary
+[Summary of findings/actions]
+
+## Details
+[Detailed information]
+```
+
+## Best Practices
+
+- <!-- TODO: Add best practices -->
+- <!-- TODO: Add more guidelines -->