Fix Docker credential helper path for TTS

src/setup-tts.ts

@@ -9,12 +9,20 @@ import { Logger } from "./logger.js";
 import { MeloTtsService } from "./services/melo-tts.js";
 
 async function run(command: string, args: string[], cwd = process.cwd()): Promise<void> {
+  const env = { ...process.env };
+  if (path.isAbsolute(command)) {
+    const dockerBinDir = path.dirname(command);
+    const currentPath = env.PATH ?? env.Path ?? "";
+    env.PATH = `${dockerBinDir}${path.delimiter}${currentPath}`;
+  }
+
   await new Promise<void>((resolve, reject) => {
     const child = spawn(command, args, {
       cwd,
       stdio: "inherit",
       windowsHide: true,
       shell: process.platform === "win32" && !path.isAbsolute(command),
+      env,
     });
 
     child.on("error", (error) => {