fix: auto-write Codex MCP config

- Merge RA-H MCP settings into Codex config.toml when --yes is passed
- Preserve unrelated TOML config while replacing stale RA-H blocks
- Update docs and package version for the Codex auto setup path

Generated with Claude Code

apps/mcp-server-standalone/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "ra-h-mcp-server",
-  "version": "3.2.0",
+  "version": "3.2.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ra-h-mcp-server",
-      "version": "3.2.0",
+      "version": "3.2.1",
       "license": "MIT",
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.0.0",