[Bugfix] Add TTS configuration options (#1177)

Signed-off-by: Yanick Schraner <yanick.schraner@bs.ch>

vllm_omni/entrypoints/cli/serve.py

@@ -290,6 +290,14 @@ class OmniServeCommand(CLISubcommand):
             type=int,
             help="The max size of generate image (height * width).",
         )
+
+        # TTS-specific parameters
+        omni_config_group.add_argument(
+            "--tts-max-instructions-length",
+            type=int,
+            default=None,
+            help="Maximum length for TTS voice style instructions (overrides stage config, default: 500).",
+        )
         return serve_parser