Update Hugo and theme with modern improvements

- Updated Hugo from v0.115.4 to v0.150.0 (latest)
- Updated m10c theme to latest version (8 commits)
- Fixed deprecated resources.ToCSS → css.Sass function
- Upgraded social icons to use brand-specific Simple Icons
- Added RSS feed autodiscovery support
- Improved icon consistency across all social platforms

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

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

.claude/settings.local.json

@@ -2,7 +2,8 @@
   "permissions": {
     "allow": [
       "Bash(hugo:*)",
-      "Bash(find:*)"
+      "Bash(find:*)",
+      "Bash(cat:*)"
     ],
     "deny": [],
     "ask": []