update CLAUDE.md and clean up MCP config

- Fix directory names (adiuva/ → adiuvAI/, adiuva-api/ → api/)
- Document git submodule structure and clone instructions
- Correct Electron architecture (local-first LangGraph, not backend-dependent)
- Add non-obvious gotchas for both projects
- Mark microservices migration as planned but not yet started
- Remove duplicate langfuse-docs MCP definition from settings.json
- Simplify settings.local.json (enableAllProjectMcpServers replaces explicit list)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/settings.json

@@ -1,9 +1 @@
-{
-  "mcpServers": {
-    "langfuse-docs": {
-      "transportType": "http",
-      "url": "https://langfuse.com/api/mcp",
-      "verifySsl": true
-    }
-  }
-}
+{}