[FEATURE] Add provider abstraction and Ollama support #14
Description
Feature Summary
Add an LLM provider abstraction so Tezrisat can support both OpenAI and Ollama cleanly. Optionally (but necessary right now, priority is Ollama support), make Tezrisat truly LLM-provider-agnostic and provide an abstraction to support most of the well-known LLM providers
Problem/Use Case
Generation is currently OpenAI-coupled, making local-model usage (Ollama) hard to adopt and difficult to maintain without invasive changes.
Proposed Solution
Introduce a provider interface and implementations for OpenAI and Ollama, with configuration-driven provider/model selection.
Alternative Solutions
No response
Priority
Would be helpful
Feature Scope
AI/ML (Content Generation)
Additional Context
No response
Checklist
- This feature would benefit other users, not just me
- I have searched for similar feature requests
- I am willing to help implement this feature