fix: model-specific instructions support and set cfg-scale 4 for breeze automatically

1 files changed, 15 insertions, 0 deletions

diff --git a/app/converter/clients/sglomni.py b/app/converter/clients/sglomni.py
index 6b8493b..13b98d7 100644
--- a/app/converter/clients/sglomni.py
+++ b/app/converter/clients/sglomni.py
@@ -175,6 +175,11 @@ class SgOmniTTSClient(BaseTTSClient):
             raise RuntimeError(
                 f"{entry.label} designs the voice from an instruction: "
                 'pass --instructions "..." describing the voice.')
+        if self.instructions and not entry.supports_instructions:
+            raise RuntimeError(
+                f"{entry.label} does not consume style instructions: the "
+                "server would silently ignore them. Remove --instructions, "
+                "or pick a model that supports them (Qwen3-TTS, MOSS-TTS).")
         if entry.capability == "clone" and entry.requires_reference \
                 and not self.ref_audio:
             raise RuntimeError(
@@ -377,6 +382,16 @@ class SgOmniTTSClient(BaseTTSClient):
             payload["ref_audio"] = self._ref_audio_value()
             if self.ref_text:
                 payload["ref_text"] = self.ref_text
+            if entry.supports_instructions and self.instructions:
+                # Reference + separate style instruction (Qwen3-TTS Base
+                # instruction conditioning, MOSS v1.5 user message). NOT
+                # the design task_type: the reference stays the voice.
+                payload["instructions"] = self.instructions
+        elif entry.supports_instructions and self.instructions:
+            # Speaker models (Qwen3-TTS CustomVoice) also shape the
+            # delivery with an instruction; unsupported models never get
+            # one (checked at connect).
+            payload["instructions"] = self.instructions
         return payload
 
     def _request_wav(self, text: str) -> bytes: