fix(migrate): skip git hooks setup when already configured

crates/vp_cli_snapshots/tests/cli_snapshots/fixtures/migration_existing_vite_hooks/.vite-hooks/commit-msg

@@ -0,0 +1 @@
+echo project-owned commit-msg

crates/vp_cli_snapshots/tests/cli_snapshots/fixtures/migration_existing_vite_hooks/.vite-hooks/pre-commit

@@ -0,0 +1 @@
+echo project-owned pre-commit

crates/vp_cli_snapshots/tests/cli_snapshots/fixtures/migration_existing_vite_hooks/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "migration-existing-vite-hooks",
+  "packageManager": "pnpm@12.11.2",
+  "scripts": {
+    "prepare": "echo vp config --no-hooks"
+  },
+  "devDependencies": {
+    "vite-plus": "latest"
+  }
+}

crates/vp_cli_snapshots/tests/cli_snapshots/fixtures/migration_existing_vite_hooks/snapshots.toml

@@ -0,0 +1,13 @@
+[[case]]
+name = "migration_existing_vite_hooks"
+vp = "global"
+steps = [
+  { argv = ["git", "init"], snapshot = false },
+  { argv = ["pnpm", "--version"], snapshot = false },
+  { argv = ["vp", "migrate", "--full", "--no-agent", "--no-editor"], comment = "Complete the existing hook setup without prompting, replacing project hooks, or changing echo arguments." },
+  { argv = ["vpt", "print-file", "package.json", ".vite-hooks/pre-commit", ".vite-hooks/commit-msg"] },
+  { argv = ["git", "config", "--local", "core.hooksPath"] },
+  { argv = ["vpt", "stat-file", ".vite-hooks/_/h", "--assert", "file"] },
+  { argv = ["vp", "migrate", "--full", "--no-agent", "--no-editor"], comment = "A complete hook setup is detected and skipped without prompting on the next migration." },
+  { argv = ["vpt", "print-file", "package.json", ".vite-hooks/pre-commit", ".vite-hooks/commit-msg"] },
+]

crates/vp_cli_snapshots/tests/cli_snapshots/fixtures/migration_existing_vite_hooks/snapshots/migration_existing_vite_hooks.md

@@ -0,0 +1,79 @@
+# migration_existing_vite_hooks
+
+## `git init`
+
+
+## `pnpm --version`
+
+
+## `vp migrate --full --no-agent --no-editor`
+
+Complete the existing hook setup without prompting, replacing project hooks, or changing echo arguments.
+
+```
+VITE+ - The Unified Toolchain for the Web
+
+◇ Updated . to Vite+ <version>
+• Node <version>  pnpm <version>
+• Dependencies:
+    vite-plus  latest → <version>
+    vite              → <version>
+• Git hooks configured
+• Package manager settings configured
+```
+
+## `vpt print-file package.json .vite-hooks/pre-commit .vite-hooks/commit-msg`
+
+```
+{
+  "name": "migration-existing-vite-hooks",
+  "packageManager": "pnpm@12.11.2",
+  "scripts": {
+    "prepare": "vp config && echo vp config --no-hooks"
+  },
+  "devDependencies": {
+    "vite-plus": "catalog:"
+  }
+}
+echo project-owned pre-commit
+echo project-owned commit-msg
+```
+
+## `git config --local core.hooksPath`
+
+```
+.vite-hooks/_
+```
+
+## `vpt stat-file .vite-hooks/_/h --assert file`
+
+```
+.vite-hooks/_/h: file
+```
+
+## `vp migrate --full --no-agent --no-editor`
+
+A complete hook setup is detected and skipped without prompting on the next migration.
+
+```
+VITE+ - The Unified Toolchain for the Web
+
+This project is already using Vite+! Happy coding!
+```
+
+## `vpt print-file package.json .vite-hooks/pre-commit .vite-hooks/commit-msg`
+
+```
+{
+  "name": "migration-existing-vite-hooks",
+  "packageManager": "pnpm@12.11.2",
+  "scripts": {
+    "prepare": "vp config && echo vp config --no-hooks"
+  },
+  "devDependencies": {
+    "vite-plus": "catalog:"
+  }
+}
+echo project-owned pre-commit
+echo project-owned commit-msg
+```

packages/cli/src/config/hooks.ts

@@ -83,6 +83,9 @@ c=$?
 exit $c`;
 }
 
+/** The per-hook stub written to `<dir>/_/<hook>`; it sources the `h` dispatcher. */
+export const HOOK_STUB_SCRIPT = '#!/usr/bin/env sh\n. "$(dirname "$0")/h"';
+
 export interface InstallResult {
   message: string;
   isError: boolean;
@@ -569,7 +572,7 @@ export function install(dir?: string, options: InstallOptions = {}): InstallResu
   writeFileSync(internal('h'), hookScript(location.dir), { mode: 0o755 });
   chmodSync(internal('h'), 0o755);
   for (const hook of SUPPORTED_GIT_HOOK_NAMES) {
-    writeFileSync(internal(hook), `#!/usr/bin/env sh\n. "$(dirname "$0")/h"`, { mode: 0o755 });
+    writeFileSync(internal(hook), HOOK_STUB_SCRIPT, { mode: 0o755 });
     chmodSync(internal(hook), 0o755);
   }
   if (!gitConfigLocalHas('core.hooksPath', location.target)) {