chore: Refactor database schema

.github/workflows/dump-database.yml

@@ -0,0 +1,45 @@
+name: Dumps database schema
+on:
+  push:
+    paths:
+      - ".github/workflows/dump-database.yml"
+      - "database/**"
+      - "supabase/**"
+  workflow_dispatch:
+
+jobs:
+  pgtap:
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: supabase/postgres
+        env:
+          POSTGRES_PASSWORD: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Prepare Supabase CI Seed
+        run: |
+          cp supabase/seed-ci.sql supabase/seed.sql
+
+      - name: Set up Supabase CLI
+        uses: supabase/setup-cli@v1
+        with:
+          version: latest
+
+      - name: Start Supabase database
+        run: |
+          supabase db start
+
+      - name: Export public database schema into database/studyu-schema.sql
+        run: |
+            supabase db dump --local --keep-comments --schema public --file database/studyu-schema.sql

.github/workflows/supabase-test.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     services:
       postgres:
-        image: supabase/postgres:15.1.0.90
+        image: supabase/postgres
         env:
           POSTGRES_PASSWORD: postgres
         options: >-

database/README.md

@@ -0,0 +1,12 @@
+# Database
+
+This directory contains the StudyU database schema and migration scripts.
+
+Do not make any changes to the `studyu-schema.sql` file directly. Instead, create a new migration
+script in the `migrations` directory. The schema file will be updated automatically by the CI/CD pipeline.
+
+## Migrations
+
+Any new database schema changes should be added as a new migration script in the `migrations` directory.
+The migration script should be named `{timestamp}__{description}.sql`, where `{timestamp}` is the current
+timestamp and `{description}` is a short description of the migration.