chore: include pre-built dist for github install

dist/tools/ast-grep/environment-check.d.ts

@@ -0,0 +1,20 @@
+export interface EnvironmentCheckResult {
+    cli: {
+        available: boolean;
+        path: string;
+        error?: string;
+    };
+    napi: {
+        available: boolean;
+        error?: string;
+    };
+}
+/**
+ * Check if ast-grep CLI and NAPI are available.
+ * Call this at startup to provide early feedback about missing dependencies.
+ */
+export declare function checkEnvironment(): EnvironmentCheckResult;
+/**
+ * Format environment check result as user-friendly message.
+ */
+export declare function formatEnvironmentCheck(result: EnvironmentCheckResult): string;