Add Fireworks AI provider to GLM 5.1 (#1275)

https://getkiln.slack.com/archives/C0AG8U78MNG/p1776274097954549?thread_ts=1776273210.799549&cid=C0AG8U78MNG

Co-authored-by: Claude <noreply@anthropic.com>

Author: tawnymanticore

libs/core/kiln_ai/adapters/ml_model_list.py

@@ -6373,6 +6373,12 @@ class KilnModel(BaseModel):
                 structured_output_mode=StructuredOutputMode.json_instructions,
                 reasoning_capable=True,
             ),
+            KilnModelProvider(
+                name=ModelProviderName.fireworks_ai,
+                model_id="accounts/fireworks/models/glm-5p1",
+                structured_output_mode=StructuredOutputMode.json_instructions,
+                reasoning_capable=True,
+            ),
             KilnModelProvider(
                 name=ModelProviderName.together_ai,
                 model_id="zai-org/GLM-5.1",