Add mcptools to gitignore and rename nav section to Documentation

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

Author: krasserm

.gitignore

@@ -7,5 +7,6 @@ __pycache__
 .venv/
 .env
 .claude/worktrees/
+/mcptools/
 /sandbox.*
 /site/

mkdocs.yml

@@ -91,7 +91,7 @@ extra_css:
   - stylesheets/extra.css
 
 nav:
-  - User Guide:
+  - Documentation:
     - Overview: index.md
     - Installation: installation.md
     - Quickstart: quickstart.md