chore: clean up leftover files & update git author rules

.claude/launch.json

@@ -0,0 +1,19 @@
+{
+  "version": "0.0.1",
+  "configurations": [
+    {
+      "name": "Frontend (Vite)",
+      "runtimeExecutable": "npm",
+      "runtimeArgs": ["run", "dev"],
+      "port": 5173,
+      "cwd": "Frontend"
+    },
+    {
+      "name": "Backend (FastAPI)",
+      "runtimeExecutable": "python3",
+      "runtimeArgs": ["run.py"],
+      "port": 8000,
+      "cwd": "backend"
+    }
+  ]
+}

CLAUDE.md

@@ -28,7 +28,8 @@ Types: `fix`, `feat`, `refactor`, `docs`, `test`, `chore`
 
 ### Git Author Rules
 - **Author name**: Always `shibinsp` — never use any other name
-- **NEVER** add `Co-Authored-By` lines in commits — no Claude, no AI co-author tags
+- **NEVER** add `Co-Authored-By: Claude` or any AI co-author tags in commits
+- Always add `Co-Authored-By: Beeax` at the end of commit messages
 - Local git config must be: `user.name = shibinsp`
 
 ### PR Description Format