chore: Halkyon Todo's scaffold joins the repository in apps/todo

Its server, client and app as `serverpod create` made them, with the
switch to server-side sessions that was waiting uncommitted, as files:
its one commit holds the scaffold alone.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

apps/todo/halkyon_todo_server/docker-compose.yaml

@@ -0,0 +1,30 @@
+services:
+  # Development services
+  postgres:
+    image: ghcr.io/serverpod/postgres:16
+    ports:
+      - "8090:5432"
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_DB: halkyon_todo
+      POSTGRES_PASSWORD: "aKpX2DK-n57tgkIr0XqP0hZSxmcwLQdj"
+    volumes:
+      - halkyon_todo_data:/var/lib/postgresql/data
+
+
+  # Test services
+  postgres_test:
+    image: ghcr.io/serverpod/postgres:16
+    ports:
+      - "9090:5432"
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_DB: halkyon_todo_test
+      POSTGRES_PASSWORD: "ls3BpmIUIv2u_Ud0eZ2h3bunjU5nDzkh"
+    volumes:
+      - halkyon_todo_test_data:/var/lib/postgresql/data
+
+
+volumes:
+  halkyon_todo_data:
+  halkyon_todo_test_data: