Setup dev container and MCP infrastructure

Add dev container configuration with docker-compose, Dockerfile, and entrypoint script

- Create .devcontainer/devcontainer.json for VS Code dev container
- Create .devcontainer/docker-compose.yml for container setup
- Add Dockerfile with Python, Go, Rust, R, and jj tools
- Add docker-entrypoint.sh to initialize .ai_index and start mcp-server
- Add Makefile for container management and MCP operations
- Add .gitignore entries for AI index
- Add OpenCode global instructions
- Add basic MCP server and tool for listing Go imports
- Add Zed integration configuration
- Update README with project vision and structure

zed-integration/mcp.json

@@ -0,0 +1,9 @@
+{
+  "mcpServers": {
+    "pmocrazy-coder": {
+      "command": "python3",
+      "args": ["opt/dev-tools/list_imports.py"],
+      "cwd": "."
+    }
+  }
+}