Important Fixes, New mechanics, and many more

.env.example

@@ -3,6 +3,9 @@ NUXT_PUBLIC_SUPABASE_URL=
 SUPABASE_URL=
 NUXT_PUBLIC_SUPABASE_ANON_KEY=
 SUPABASE_SERVICE_ROLE_KEY=
+# Used only by db:ensure to create a missing schema. Copy the Session pooler
+# URI from Supabase Dashboard → Connect and replace its password placeholder.
+SUPABASE_DB_URL=
 
 # AI provider (choose openrouter or deepseek)
 AI_PROVIDER=openrouter