fix: avoid trailing colon in PATH when env.PATH is undefined

Prevents CWD from being added as an implicit executable search
directory in minimal environments.

Author: MathurAditya724

src/commands/local/run.ts

@@ -89,7 +89,7 @@ function augmentPathForNode(
   const sep = process.platform === "win32" ? ";" : ":";
   return {
     ...env,
-    PATH: `${binDir}${sep}${env.PATH ?? ""}`,
+    PATH: env.PATH ? `${binDir}${sep}${env.PATH}` : binDir,
   };
 }
 

src/lib/init/verify-setup.ts

@@ -77,7 +77,7 @@ export async function verifySetup(
     const sep = process.platform === "win32" ? ";" : ":";
     childEnv = {
       ...childEnv,
-      PATH: `${binDir}${sep}${childEnv.PATH ?? ""}`,
+      PATH: childEnv.PATH ? `${binDir}${sep}${childEnv.PATH}` : binDir,
     };
   }