feat(deps): add Supabase Python client dependencies

Add supabase, gotrue, and postgrest packages to enable REST API
integration with Supabase. These dependencies support HTTP/HTTPS
communication which works in restricted network environments like
HuggingFace Spaces where direct PostgreSQL connections are blocked.

requirements.txt

@@ -33,6 +33,11 @@ aiosmtplib>=3.0.1
 aiocache>=0.12.2
 jinja2>=3.1.3
 
+# Supabase client for REST API access (works on HuggingFace Spaces)
+supabase>=2.0.0
+gotrue>=2.0.0
+postgrest>=0.13.0
+
 # Simple GraphQL support
 graphql-core>=3.2.0