chore: ignore TS build cache (*.tsbuildinfo)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitignore

@@ -6,6 +6,7 @@ backend/target/
 frontend/node_modules/
 frontend/dist/
 frontend/.vite/
+*.tsbuildinfo
 
 # IDE / OS
 .idea/

frontend/tsconfig.node.tsbuildinfo

@@ -1 +0,0 @@
-{"root":["./vite.config.ts"],"version":"5.9.3"}

frontend/tsconfig.tsbuildinfo

@@ -1 +0,0 @@
-{"root":["./src/app.tsx","./src/api.ts","./src/main.tsx","./src/status.ts","./src/types.ts","./src/auth/authcontext.tsx","./src/components/layout.tsx","./src/pages/approvalqueuepage.tsx","./src/pages/changepasswordpage.tsx","./src/pages/dashboardpage.tsx","./src/pages/loginpage.tsx","./src/pages/visitrequestformpage.tsx","./src/pages/visitrequestlistpage.tsx"],"errors":true,"version":"5.9.3"}