fix: trim accent list to model-validated values only

The model's _resolve_instruct() validates against a fixed vocabulary.
Only 10 accents are supported — removed all unsupported additions.
Updated tooltip to reflect actual constraints.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

nodes/generator.py

@@ -150,9 +150,10 @@ class OmniVoiceGenerate:
                         "AGE:      child, teenager, young adult, middle-aged, elderly\n"
                         "PITCH:    very low pitch, low pitch, moderate pitch, high pitch, very high pitch, whisper\n"
                         "\n"
-                        "ACCENT EXAMPLES:\n"
-                        "  british accent, american southern accent, indian accent,\n"
-                        "  australian accent, french accent, japanese accent ...\n"
+                        "ACCENTS (only these are supported by the model):\n"
+                        "  american accent, australian accent, british accent, canadian accent,\n"
+                        "  chinese accent, indian accent, japanese accent, korean accent,\n"
+                        "  portuguese accent, russian accent\n"
                         "\n"
                         "EXAMPLE:  female, high pitch, british accent"
                     ),

nodes/voice_design.py

@@ -11,36 +11,13 @@ class OmniVoiceVoiceDesign:
         "high pitch", "very high pitch", "whisper",
     ]
 
+    # Exactly the accents validated by the model's _resolve_instruct()
     ACCENTS = [
         "none",
-        # English varieties
-        "american accent", "american southern accent", "american new york accent",
-        "american midwest accent", "american texas accent",
-        "british accent", "british rp accent", "british cockney accent",
-        "scottish accent", "welsh accent", "irish accent",
-        "australian accent", "new zealand accent",
-        "canadian accent", "south african accent",
-        # South / Southeast Asia
-        "indian accent", "pakistani accent", "bangladeshi accent",
-        "sri lankan accent", "singaporean accent", "malaysian accent",
-        "filipino accent", "vietnamese accent", "thai accent",
-        "indonesian accent",
-        # East Asia
-        "chinese accent", "japanese accent", "korean accent",
-        # Europe
-        "french accent", "german accent", "italian accent",
-        "spanish accent", "portuguese accent", "dutch accent",
-        "swedish accent", "norwegian accent", "danish accent",
-        "finnish accent", "polish accent", "czech accent",
-        "hungarian accent", "romanian accent", "greek accent",
-        "turkish accent",
-        # Eastern Europe / Central Asia
-        "russian accent", "ukrainian accent", "arabic accent",
-        "persian accent", "kazakh accent",
-        # Africa / Americas
-        "nigerian accent", "ghanaian accent", "kenyan accent",
-        "mexican accent", "brazilian accent", "caribbean accent",
-        "argentinian accent",
+        "american accent", "australian accent", "british accent",
+        "canadian accent", "chinese accent", "indian accent",
+        "japanese accent", "korean accent", "portuguese accent",
+        "russian accent",
     ]
 
     @classmethod
@@ -54,7 +31,7 @@ class OmniVoiceVoiceDesign:
                 "pitch":  (cls.PITCHES, {"default": "none",
                     "tooltip": "Pitch / register of the voice."}),
                 "accent": (cls.ACCENTS, {"default": "none",
-                    "tooltip": "Regional or language accent. Type to filter the list."}),
+                    "tooltip": "Accent validated by the model. Only these 10 are supported."}),
             },
         }