* fixes setup scripts
fixes to env handling in setup script plus other minor fixes
* Remove var declarations
Declarations such as `LLM_PROVIDER=$LLM_PROVIDER` override .env variables in compose
Similar issue is present in the frontend - need to choose either to switch to separate frontend env or keep as is.
* Manage apikeys in settings
1. More pydantic management of api keys.
2. Clean up of variable declarations from docker compose files, used to block .env imports. Now should be managed ether by settings.py defaults or .env