fix: add missing database.py module

fix: use database module in all routers

fix: use database module instead of main in all routers

fix: move database import to top of main.py

fix: restore app.add_middleware syntax

fix: move include_router outside middleware block

feat: add OAuth, repos, history endpoints

Delete run_migration endpoint and migration SQL

Clean up comments in main.py

Fix syntax for run_migration route decorator

force redeploy

Merge pull request #5 from Davidbelieve/test/bugoracle-trigger

fix: migration endpoint uses _engine

Merge pull request #4 from Davidbelieve/test/bugoracle-trigger

temp: add migration endpoint