feat(title-generation): add title generation feature with new model

Introduce a new title generation feature using TITLE_GENERATOR_MODEL. Includes:
- Configuration addition for the new model
- Model initialization in llms.py
- New title_generator.py with structured output handling

core/config.py

@@ -33,6 +33,7 @@ class Settings(BaseSettings):
     FALLBACK_MODEL: str
     EMBEDDINGS_MODEL: str
     OUTPUT_FORMATTER_MODEL: str
+    TITLE_GENERATOR_MODEL: str
 
 def get_settings():
     return Settings()

workflow/llms.py

@@ -15,4 +15,6 @@ main_model = (
 output_formatter_model = ChatGroq(
     model=settings.OUTPUT_FORMATTER_MODEL, 
     temperature=0
-)
+)
+
+title_generator_model = init_chat_model(settings.TITLE_GENERATOR_MODEL, temperature=0.2)

workflow/title_generator.py

@@ -0,0 +1,16 @@
+from pydantic import BaseModel, Field
+from .llms import title_generator_model
+
+from core.config import get_settings
+
+settings = get_settings()
+
+class Title(BaseModel):
+    title: str = Field(..., description="The title based on user message.")
+
+async def generate_chat_title(message: str) -> str:
+    title = await title_generator_model.with_structured_output(Title).ainvoke(
+        "Generate a 4-5 words title based on the following user message. \nUser Message: "
+        + message
+    )
+    return title.title