Fix unused GitBranch import + minor cleanup

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/package-lock.json

@@ -37,7 +37,6 @@
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
         "react-hook-form": "^7.49.2",
-        "react-hot-toast": "^2.4.1",
         "react-icons": "^4.12.0",
         "react-router-dom": "^6.20.1",
         "sonner": "^2.0.7",
@@ -3749,6 +3748,7 @@
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.1.3.tgz",
       "integrity": "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==",
+      "devOptional": true,
       "license": "MIT"
     },
     "node_modules/d3-color": {
@@ -4682,15 +4682,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/goober": {
-      "version": "2.1.18",
-      "resolved": "https://registry.npmjs.org/goober/-/goober-2.1.18.tgz",
-      "integrity": "sha512-2vFqsaDVIT9Gz7N6kAL++pLpp41l3PfDuusHcjnGLfR6+huZkl6ziX+zgVC3ZxpqWhzH6pyDdGrCeDhMIvwaxw==",
-      "license": "MIT",
-      "peerDependencies": {
-        "csstype": "^3.0.10"
-      }
-    },
     "node_modules/gopd": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/gopd/-/gopd-1.2.0.tgz",
@@ -5706,23 +5697,6 @@
         "react": "^16.8.0 || ^17 || ^18 || ^19"
       }
     },
-    "node_modules/react-hot-toast": {
-      "version": "2.6.0",
-      "resolved": "https://registry.npmjs.org/react-hot-toast/-/react-hot-toast-2.6.0.tgz",
-      "integrity": "sha512-bH+2EBMZ4sdyou/DPrfgIouFpcRLCJ+HoCA32UoAYHn6T3Ur5yfcDCeSr5mwldl6pFOsiocmrXMuoCJ1vV8bWg==",
-      "license": "MIT",
-      "dependencies": {
-        "csstype": "^3.1.3",
-        "goober": "^2.1.16"
-      },
-      "engines": {
-        "node": ">=10"
-      },
-      "peerDependencies": {
-        "react": ">=16",
-        "react-dom": ">=16"
-      }
-    },
     "node_modules/react-icons": {
       "version": "4.12.0",
       "resolved": "https://registry.npmjs.org/react-icons/-/react-icons-4.12.0.tgz",