feat: Implement Worker Service with session management and SDK integration

- Added WorkerService to handle long-running HTTP service with session management.
- Implemented endpoints for initializing, observing, finalizing, checking status, and deleting sessions.
- Integrated with Claude SDK for processing observations and generating responses.
- Added port allocator utility to dynamically find available ports for the service.
- Configured TypeScript settings for the project.

plugin/.claude-plugin/plugin.json

@@ -0,0 +1,17 @@
+{
+  "name": "claude-mem",
+  "version": "3.9.17",
+  "description": "Persistent memory system for Claude Code - seamlessly preserve context across sessions",
+  "author": {
+    "name": "Alex Newman"
+  },
+  "repository": "https://github.com/thedotmack/claude-mem",
+  "license": "SEE LICENSE IN LICENSE",
+  "keywords": [
+    "memory",
+    "context",
+    "persistence",
+    "hooks",
+    "mcp"
+  ]
+}