Feat: Backend scaffolding and local dev stack

Commands/Local/Dev/backend.just

@@ -0,0 +1,26 @@
+project_root := justfile_directory()
+backend_dir := project_root + "/Backend"
+
+# Apply embedded database migrations.
+migrate-up:
+	cd '{{backend_dir}}' && go run ./cmd/migrate up
+
+# Roll back the most recent embedded database migration.
+migrate-down:
+	cd '{{backend_dir}}' && go run ./cmd/migrate down
+
+# Reset all embedded database migrations and reapply from scratch.
+migrate-reset:
+	cd '{{backend_dir}}' && go run ./cmd/migrate reset
+
+# Show the embedded database migration status.
+migrate-status:
+	cd '{{backend_dir}}' && go run ./cmd/migrate status
+
+# Format backend Go source files.
+fmt:
+	cd '{{backend_dir}}' && gofmt -w ./cmd ./db ./internal
+
+# Run backend test suite.
+test:
+	cd '{{backend_dir}}' && go test ./...