Add Claude Code configuration files

- Add CLAUDE.md with project documentation for Claude Code
- Add .claude/settings.local.json with local settings
- These files help Claude Code understand the blog structure and provide better assistance

🤖 Generated with [Claude Code](https://claude.ai/code)

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

.claude/settings.local.json

@@ -0,0 +1,10 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(hugo:*)",
+      "Bash(find:*)"
+    ],
+    "deny": [],
+    "ask": []
+  }
+}