test(config): verify vp config is idempotent on second run

Author: fengmk2

packages/cli/snap-tests-global/command-config-prepare-auto-hooks/snap.txt

@@ -15,3 +15,17 @@ export default defineConfig({
   },
 
 });
+
+> vp config # run again to ensure idempotent
+> cat .vite-hooks/pre-commit # should remain unchanged
+vp staged
+
+> cat vite.config.ts # should remain unchanged
+import { defineConfig } from 'vite-plus';
+
+export default defineConfig({
+  staged: {
+    "*": "vp check --fix"
+  },
+  
+});

packages/cli/snap-tests-global/command-config-prepare-auto-hooks/steps.json

@@ -7,6 +7,9 @@
     "vp config # should install hooks automatically without prompting",
     "git config --local core.hooksPath # should be .vite-hooks/_",
     "cat .vite-hooks/pre-commit # should have vp staged",
-    "cat vite.config.ts # should have staged config"
+    "cat vite.config.ts # should have staged config",
+    "vp config # run again to ensure idempotent",
+    "cat .vite-hooks/pre-commit # should remain unchanged",
+    "cat vite.config.ts # should remain unchanged"
   ]
 }