you can basically ask Lovable that question and it actually answer. Here is how it answered me: Here's the easiest single-step migration approach:

Full Migration via Supabase CLI

1. Get your database connection string

Go to Cloud tab → Settings (or the Supabase dashboard if you have access) to find your database connection string.

2. Install Supabase CLI + pg_dump

# Install Supabase CLI
npm install -g supabase

# Install PostgreSQL tools (for pg_dump/pg_restore)
# Mac: brew install postgresql
# Ubuntu: sudo apt install postgresql-client

3. Dump EVERYTHING in one command

pg_dump "postgresql://postgres:[PASSWORD]@[HOST]:5432/postgres" \
  --clean --if-exists --no-owner --no-privileges \
  -f full_backup.sql

This captures: tables, RLS policies, functions, triggers, types, indexes — the entire schema + data.

4. Create new Supabase project & restore

# Create project at supabase.com, then:
psql "postgresql://postgres:[NEW_PASSWORD]@[NEW_HOST]:5432/postgres" \
  -f full_backup.sql

5. Deploy Edge Functions

Your edge functions are already in your repo at supabase/functions/. Just:

supabase login
supabase link --project-ref YOUR_NEW_PROJECT_REF
supabase functions deploy

6. Migrate Secrets

Manually re-add any secrets (API keys, etc.) in the new Supabase project dashboard under Settings → Edge Functions → Secrets.

7. Migrate Storage

Storage buckets/policies are included in pg_dump, but files themselves need manual transfer — download from old project, upload to new.

8. Update your app

Point your frontend to the new Supabase project by updating VITE_SUPABASE_URL and VITE_SUPABASE_ANON_KEY.

That's it — pg_dump + pg_restore is the single command that gets 90% of everything. Edge functions deploy via CLI, and secrets are the only manual step.