chore: add .gitignore for Supabase project

.gitignore

@@ -1,28 +1,48 @@
-# Environment files
+# Python
+__pycache__/
+*.py[cod]
+*.so
+build/
+dist/
+eggs/
+*.egg-info/
+.venv/
+venv/
+
+# Node
+node_modules/
+/dist
+/build
+
+# Environment files (never commit secrets)
 .env
-.env.*
-!.env.example
+.env.local
+.env.*.local
 
-.archive/
+# IDE
+.vscode/
+.idea/
 
-# Docker volume RUNTIME data (large binary/runtime files - not schema SQL)
-volumes/db-data/
-volumes/storage/
-volumes/pooler/
-volumes/logs/
-
-
-# Backup files
-*.bak
-*.bak.*
-backups/
+# OS files
+.DS_Store
+Thumbs.db
 
 # Logs
-logs/
 *.log
-*.bak
+logs/
+queue_workers.log
 
+# Large files
+*.csv
+*.xlsx
+*.sqlite
+*.db
 
+# Docker
+docker-compose.override.yml
 
-
-we are going to make improvements to our classroomcopilot app to allow a teacher user to create and manage a timetable of lessons taught to various classes and use tldraw to teach those lessons. Each lesson should have its own tldraw whiteboard (start with blank) and changes that are made to the whiteboard should be saved for later retrieval. Classes contain students. Each student in the class should have access to the tldraw whiteboards. Teachers should be able to manage students in their classes.
+# Supabase local development
+.gitignore
+.DS_Store
+*.log
+*.tmp