Update .gitignore and requirements.txt; remove mariadb dependency and add SQLAlchemy

.gitignore

@@ -1,14 +1,50 @@
-__pycache__/
-*.log
-<<<<<<< Updated upstream
-=======
-*.env
->>>>>>> Stashed changes
-.env
 start.sh
 update.sh
+# OS
+.DS_Store
+Thumbs.db
+Desktop.ini
+
+# Editors / IDEs
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# Logs
+*.log
+logs/
+
+# Env / secrets
+.env
+.env.*
+!.env.example
+
+# Dependencies
+node_modules/
+vendor/
 venv/
-update.ps1
-venv/pyvenv.cfg
-venv/*
-venv/pyvenv.cfg
+.venv/
+__pycache__/
+*.pyc
+
+# Build output
+dist/
+build/
+out/
+*.egg-info/
+target/
+bin/
+obj/
+
+# Testing / coverage
+coverage/
+.nyc_output/
+.pytest_cache/
+
+# Misc
+*.tmp
+*.bak
+*.old
+.cache/

requirements.txt

@@ -1,4 +1,3 @@
-mariadb == 1.1.14
 python-dotenv == 1.2.3
 fastapi[standard] == 0.141.1
 argon2-cffi == 25.1.0
@@ -6,3 +5,4 @@ Jinja2==3.1.6
 MarkupSafe==3.0.3
 itsdangerous==2.2.0
 alembic==1.20.0
+SQLAlchemy==2.0.54