chore: sync core lib and CLAUDE.md from agent-core (#2)

Co-authored-by: agent-core-bot <noreply@agent-sh.github.io>

Author: avifenesh

CLAUDE.md

@@ -0,0 +1,70 @@
+<!-- AUTO-GENERATED by agent-core sync. Do not edit directly. -->
+# enhance
+
+> Plugin structure and tool use analyzer - validates plugin.json, MCP tools, and security patterns
+
+## Agents
+
+- agent-enhancer
+- claudemd-enhancer
+- cross-file-enhancer
+- docs-enhancer
+- hooks-enhancer
+- plugin-enhancer
+- prompt-enhancer
+- skills-enhancer
+
+## Skills
+
+- enhance-agent-prompts
+- enhance-claude-memory
+- enhance-cross-file
+- enhance-docs
+- enhance-hooks
+- enhance-orchestrator
+- enhance-plugins
+- enhance-prompts
+- enhance-skills
+
+## Commands
+
+- enhance
+
+## Critical Rules
+
+1. **Plain text output** - No emojis, no ASCII art. Use `[OK]`, `[ERROR]`, `[WARN]`, `[CRITICAL]` for status markers.
+2. **No unnecessary files** - Don't create summary files, plan files, audit files, or temp docs.
+3. **Task is not done until tests pass** - Every feature/fix must have quality tests.
+4. **Create PRs for non-trivial changes** - No direct pushes to main.
+5. **Always run git hooks** - Never bypass pre-commit or pre-push hooks.
+6. **Use single dash for em-dashes** - In prose, use ` - ` (single dash with spaces), never ` -- `.
+7. **Report script failures before manual fallback** - Never silently bypass broken tooling.
+8. **Token efficiency** - Be concise. Save tokens over decorations.
+
+## Model Selection
+
+| Model | When to Use |
+|-------|-------------|
+| **Opus** | Complex reasoning, analysis, planning |
+| **Sonnet** | Validation, pattern matching, most agents |
+| **Haiku** | Mechanical execution, no judgment needed |
+
+## Core Priorities
+
+1. User DX (plugin users first)
+2. Worry-free automation
+3. Token efficiency
+4. Quality output
+5. Simplicity
+
+## Dev Commands
+
+```bash
+npm test          # Run tests
+npm run validate  # All validators
+```
+
+## References
+
+- Part of the [agentsys](https://github.com/agent-sh/agentsys) ecosystem
+- https://agentskills.io

lib/discovery/index.js

@@ -297,30 +297,6 @@ function getPluginPrefixRegex(repoRoot) {
   return new RegExp(`(${escaped.join('|')})`, 'g');
 }
 
-/**
- * Discover plugins from marketplace.json instead of scanning the filesystem.
- * Used in the post-extraction world where plugins/ no longer exists in agentsys.
- *
- * @param {string} [repoRoot] - Repository root path
- * @returns {Array<{name: string, source: string, version: string, requires: string[], core: string}>}
- */
-function discoverPluginsFromMarketplace(repoRoot) {
-  if (!repoRoot) {
-    repoRoot = path.resolve(__dirname, '..', '..');
-  }
-  const marketplacePath = path.join(repoRoot, '.claude-plugin', 'marketplace.json');
-  if (!fs.existsSync(marketplacePath)) return [];
-
-  const marketplace = JSON.parse(fs.readFileSync(marketplacePath, 'utf8'));
-  return (marketplace.plugins || []).map(p => ({
-    name: p.name,
-    source: p.source,
-    version: p.version,
-    requires: p.requires || [],
-    core: p.core || ''
-  }));
-}
-
 /**
  * Get all discovery results in a single call.
  *
@@ -365,7 +341,6 @@ module.exports = {
   parseFrontmatter,
   isValidPluginName,
   discoverPlugins,
-  discoverPluginsFromMarketplace,
   discoverCommands,
   discoverAgents,
   discoverSkills,

lib/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "@agentsys/lib",
+  "version": "4.2.0",
+  "description": "Core library for AgentSys: platform detection, pattern matching, workflow state, and utilities",
+  "main": "index.js",
+  "type": "commonjs",
+  "engines": {
+    "node": ">=18.0.0"
+  },
+  "license": "MIT",
+  "author": {
+    "name": "Avi Fenesh",
+    "url": "https://github.com/avifenesh"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/agent-sh/agentsys.git",
+    "directory": "lib"
+  },
+  "files": [
+    "**/*.js",
+    "**/*.json",
+    "!**/*.test.js"
+  ]
+}

lib/schemas/plugin-manifest.schema.json

@@ -52,20 +52,6 @@
       "type": "array",
       "maxItems": 20,
       "uniqueItems": true
-    },
-    "requires": {
-      "type": "array",
-      "items": {
-        "type": "string",
-        "pattern": "^[a-z][a-z0-9-]*$"
-      },
-      "uniqueItems": true,
-      "description": "Other plugins this plugin depends on"
-    },
-    "core": {
-      "type": "string",
-      "pattern": "^>=\\d+\\.\\d+\\.\\d+$",
-      "description": "Minimum agent-core version required"
     }
   }
 }