fix: add rg to path (#146)

src/tools/impl/shellEnv.ts

@@ -0,0 +1,42 @@
+/**
+ * Shell environment utilities
+ * Provides enhanced environment variables for shell execution,
+ * including bundled tools like ripgrep in PATH.
+ */
+
+import { createRequire } from "node:module";
+import * as path from "node:path";
+import { fileURLToPath } from "node:url";
+
+/**
+ * Get the directory containing the bundled ripgrep binary.
+ * Returns undefined if @vscode/ripgrep is not installed.
+ */
+function getRipgrepBinDir(): string | undefined {
+  try {
+    const __filename = fileURLToPath(import.meta.url);
+    const require = createRequire(__filename);
+    const rgPackage = require("@vscode/ripgrep");
+    // rgPath is the full path to the binary, we want the directory
+    return path.dirname(rgPackage.rgPath);
+  } catch (_error) {
+    return undefined;
+  }
+}
+
+/**
+ * Get enhanced environment variables for shell execution.
+ * Includes bundled tools (like ripgrep) in PATH.
+ */
+export function getShellEnv(): NodeJS.ProcessEnv {
+  const env = { ...process.env };
+
+  // Add ripgrep bin directory to PATH if available
+  const rgBinDir = getRipgrepBinDir();
+  if (rgBinDir) {
+    const currentPath = env.PATH || "";
+    env.PATH = `${rgBinDir}${path.delimiter}${currentPath}`;
+  }
+
+  return env;
+}