Update llm_service.py

[kashifulhaque]

No description provided.

[gemini-code-assist]

Summary of Changes

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This pull request updates the image generation model utilized by the LLM service. The change specifically targets the create_or_edit_image function, ensuring that the application leverages a newer, potentially more advanced, version of the Gemini Flash image model for generating or editing images.

Highlights

• Image Model Update: The image generation model in llm_service.py has been upgraded from "google/gemini-2.5-flash-image" to "google/gemini-3.1-flash-image-preview".

Changelog

• src/services/llm_service.py
  • Updated the image_model variable to use google/gemini-3.1-flash-image-preview instead of google/gemini-2.5-flash-image.

Activity

• No specific activity (comments, reviews) has been recorded for this pull request yet.

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[gemini-code-assist]

Code Review

This pull request updates the image generation model to a newer preview version. My feedback focuses on improving maintainability by suggesting that the hardcoded model name be moved to a configuration variable, consistent with how other models are handled in the project. This will make future updates easier and reduce risks associated with using preview models.

[gemini-code-assist]

While updating the model is the goal of this PR, hardcoding the model name here makes it difficult to manage and update in the future, especially for a model in 'preview'. It's inconsistent with how OPENROUTER_MODEL is handled. Consider moving this to a configuration variable (e.g., OPENROUTER_IMAGE_MODEL in config.py) and initializing it in the LLMService constructor. This will improve maintainability and align with existing patterns in the codebase.