fix(tts): correct return mimeType and include ok in send details

src/agents/tools/tts-tool.test.ts

@@ -39,10 +39,50 @@ describe("createTtsTool", () => {
       ok: true,
       deliveryMode: "return",
       audioPath: "/tmp/openclaw/tts-test/voice.mp3",
+      mimeType: "audio/mpeg",
       sent: false,
     });
   });
 
+  it("uses audio/ogg mimeType for voice-compatible return output", async () => {
+    textToSpeechMock.mockResolvedValueOnce({
+      success: true,
+      audioPath: "/tmp/openclaw/tts-test/voice.opus",
+      provider: "openai",
+      voiceCompatible: true,
+    });
+    const tool = createTtsTool();
+
+    const result = await tool.execute("call-voice", {
+      text: "hello",
+      channel: "telegram",
+      deliveryMode: "return",
+    });
+
+    expect(result.details).toMatchObject({
+      ok: true,
+      deliveryMode: "return",
+      mimeType: "audio/ogg",
+    });
+  });
+
+  it("includes ok=true in send mode success details", async () => {
+    textToSpeechMock.mockResolvedValueOnce({
+      success: true,
+      audioPath: "/tmp/openclaw/tts-test/voice.mp3",
+      provider: "openai",
+      voiceCompatible: false,
+    });
+    const tool = createTtsTool();
+
+    const result = await tool.execute("call-send", {
+      text: "hello",
+      deliveryMode: "send",
+    });
+
+    expect(result.details).toMatchObject({ ok: true, deliveryMode: "send" });
+  });
+
   it("returns validation error for invalid deliveryMode", async () => {
     const tool = createTtsTool();
     const result = await tool.execute("call-2", {

src/agents/tools/tts-tool.ts

@@ -72,7 +72,7 @@ export function createTtsTool(opts?: {
               ok: true,
               deliveryMode: "return",
               audioPath: result.audioPath,
-              mimeType: "audio/mpeg",
+              mimeType: result.voiceCompatible ? "audio/ogg" : "audio/mpeg",
               sent: false,
               provider: result.provider,
             },
@@ -87,7 +87,12 @@ export function createTtsTool(opts?: {
         lines.push(`MEDIA:${result.audioPath}`);
         return {
           content: [{ type: "text", text: lines.join("\n") }],
-          details: { audioPath: result.audioPath, provider: result.provider, deliveryMode: "send" },
+          details: {
+            ok: true,
+            audioPath: result.audioPath,
+            provider: result.provider,
+            deliveryMode: "send",
+          },
         };
       }