Add LICENSE, package.json, CHANGELOG, and enhance documentation

- Add MIT License
- Add package.json with OpenClaw skill metadata
  - Explicitly declares NO required environment variables (fully local)
  - Documents data storage path: ~/.openclaw/data/rag/
  - Includes installation steps and available scripts
- Add CHANGELOG.md with version history (v1.0.0)
- Update README.md to:
  - Clarify no API keys required (fully local system)
  - Add documentation files section
  - Reference CHANGELOG, LICENSE, package.json
- Addresses security scanner best practices for transparency

package.json

@@ -0,0 +1,52 @@
+{
+  "name": "rag-openclaw",
+  "version": "1.0.0",
+  "description": "RAG Knowledge System for OpenClaw - Semantic search across chat history, code, docs, and skills with automatic memory retrieval",
+  "homepage": "http://git.theta42.com/nova/openclaw-rag-skill",
+  "author": {
+    "name": "Nova AI",
+    "email": "nova@vm42.us"
+  },
+  "owner": "wmantly",
+  "openclaw": {
+    "always": false,
+    "capabilities": []
+  },
+  "environment": {
+    "required": {},
+    "optional": {},
+    "config": {
+      "paths": [
+        "~/.openclaw/data/rag/"
+      ],
+      "help": "ChromaDB storage location. No configuration required - system auto-creates data directory on first use."
+    }
+  },
+  "install": {
+    "type": "instruction",
+    "steps": [
+      "1. Install Python dependency: pip3 install --user chromadb",
+      "2. Install location: ~/.openclaw/workspace/rag/ (created automatically)",
+      "3. Data storage: ~/.openclaw/data/rag/ (auto-created on first run)",
+      "4. No API keys or credentials required - fully local system"
+    ]
+  },
+  "scripts": {
+    "ingest:sessions": "python3 ingest_sessions.py",
+    "ingest:workspace": "python3 ingest_docs.py workspace",
+    "ingest:skills": "python3 ingest_docs.py skills",
+    "search": "python3 rag_query.py",
+    "update": "bash scripts/rag-auto-update.sh",
+    "stats": "python3 rag_manage.py stats",
+    "manage": "python3 rag_manage.py"
+  },
+  "keywords": [
+    "rag",
+    "knowledge",
+    "semantic-search",
+    "chromadb",
+    "memory",
+    "retrieval-augmented-generation"
+  ],
+  "license": "MIT"
+}