feat: implement similarity_engine with hybrid scoring and database-backed project comparison logic

feat: implement sync worker service for automated FAISS index rebuilding and project preprocessing

feat: implement database synchronization queue with SQL triggers and a background worker for automated FAISS index rebuilding.

feat: add configuration module, response formatting utilities, and initialized project data structure for recommendation engine

feat: implement similarity engine with embedding generation, hybrid ranking, and explainability modules

feat: implement similarity engine for hybrid semantic and feature-based project comparison

feat: implement hybrid_ranker for adaptive project similarity scoring and originality calculation

feat: implement project analysis and LLM chat services in api module

feat: implement hybrid ranking engine for semantic and feature-based project similarity

feat: implement hybrid similarity and originality scoring logic for project ranking

feat: implement hybrid similarity ranking and search engine modules to improve project retrieval accuracy

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update .gitignore and add scheduler and sync_projects services

add fiels