Add commit hash to footer for deployment verification

- Display git commit hash in footer to track deployed version
- Create cross-platform build script to inject commit hash
- Update build process to include version information

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

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

.claude/settings.local.json

@@ -12,7 +12,12 @@
       "Bash(git push:*)",
       "Bash(git commit:*)",
       "Bash(git pull:*)",
-      "Bash(git add:*)"
+      "Bash(git add:*)",
+      "Bash(git push:*)",
+      "Bash(git reset:*)",
+      "Bash(git checkout:*)",
+      "WebFetch(domain:cheatingchelsea.com)",
+      "Bash(npm install:*)"
     ],
     "deny": []
   }