feat: Add agent system with specialized prompts and skills

feat: Add Chat endpoint and fix Dockerfile

feat: Add Chat endpoint and fix Dockerfile

chore: Trigger space rebuild for chat endpoint

feat: Register Chat router in app

feat: Add Chat endpoint for AI conversation

feat: Add Chat Agent module

HARDFIX: Force llama-3.1-8b-instant model everywhere - 70B deprecated

Fix .env - GROQ_MODEL=llama-3.1-8b-instant

Upload full backend with updated settings - GROQ_MODEL=llama-3.1-8b-instant

Remove middleware - Clean version

Fix rate limit middleware

Fix folder names and router files - Use Llama 3.1 8B

Fix requirements and Firebase config

Fix app.py path and Dockerfile

Fix HuggingFace metadata

Initial commit - AmkyawDev Coder Backend

initial commit