feat: db dependency upgrade

No longer using .begin() and context manager. This means commits must be explicit (already were) but also, it allows for sanity checks within routes after commits.

src/database.py

@@ -17,13 +17,16 @@ engine = create_engine(SQLALCHEMY_DATABASE_URI.get_secret_value())
 
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
 
+
 def get_db():
-	with SessionLocal.begin() as db:
-		try:
-			yield db
-		finally:
-			db.rollback()   # Anything not explicitly commited is rolled back
-			db.close()
+	db = SessionLocal()
+	try:
+		yield db
+	except:
+		db.rollback()
+		raise
+	finally:
+		db.close()
 
 
 db_dependency = Annotated[Session, Depends(get_db)]