fix(cli): inline lint-staged version into staged debug bundle

packages/cli/snap-tests-global/command-staged-with-config/snap.txt

@@ -20,5 +20,8 @@
 [COMPLETED] Cleaning up temporary files...
 
 > git add -A && git commit -m 'second'
+> echo 'export const bar = 2;' >> src/index.ts && git add src/index.ts
+> vp staged --debug # should succeed with debug enabled
+> git add -A && git commit -m 'third'
 > printf 'eval("code");\n' > src/fail.js && git add src/fail.js
 [1]> vp staged > /dev/null 2>&1 # should fail when staged .js file has lint errors

packages/cli/snap-tests-global/command-staged-with-config/steps.json

@@ -9,6 +9,15 @@
     },
     "vp staged # should succeed with staged .ts files",
     { "command": "git add -A && git commit -m 'second'", "ignoreOutput": true },
+    {
+      "command": "echo 'export const bar = 2;' >> src/index.ts && git add src/index.ts",
+      "ignoreOutput": true
+    },
+    {
+      "command": "vp staged --debug # should succeed with debug enabled",
+      "ignoreOutput": true
+    },
+    { "command": "git add -A && git commit -m 'third'", "ignoreOutput": true },
     {
       "command": "printf 'eval(\"code\");\\n' > src/fail.js && git add src/fail.js",
       "ignoreOutput": true

packages/cli/tsdown.config.ts

@@ -1,5 +1,10 @@
+import { createRequire } from 'node:module';
+
 import { defineConfig } from 'tsdown';
 
+const require = createRequire(import.meta.url);
+const lintStagedPackageJson = require('lint-staged/package.json') as { version: string };
+
 /**
  * Rewrite `../versions.js` → `./versions.js` at resolve time.
  *
@@ -18,6 +23,22 @@ const fixVersionsPathPlugin = {
   },
 };
 
+/**
+ * Replace lint-staged's lib/version.js with a build-time version value.
+ *
+ * The original module reads ../package.json at runtime when debug logging is enabled,
+ * but that file does not exist in the bundled dist/staged/bin.js.
+ */
+const inlineLintStagedVersionPlugin = {
+  name: 'inline-lint-staged-version',
+  load(id: string) {
+    if (id.replaceAll('\\', '/').endsWith('/lint-staged/lib/version.js')) {
+      return `export const getVersion = async () => ${JSON.stringify(lintStagedPackageJson.version)};\n`;
+    }
+    return undefined;
+  },
+};
+
 export default defineConfig([
   // ESM — all entry points bundled to dist/
   {
@@ -56,7 +77,7 @@ export default defineConfig([
         mainFields: ['module', 'main'],
       },
     },
-    plugins: [fixVersionsPathPlugin],
+    plugins: [fixVersionsPathPlugin, inlineLintStagedVersionPlugin],
   },
 
   // CJS — dual-format entries