feat: add tests for import polling, login page, money utilities, and query keys

- Implemented tests for import polling functionality, ensuring correct behavior for active and terminal import statuses.
- Created tests for the login page, validating user interactions and error handling.
- Added unit tests for money utility functions, covering parsing, formatting, and summation of monetary values.
- Developed tests for query keys, ensuring proper scoping and invalidation roots.

chore: setup testing environment and configuration

- Added setup file for testing with Vitest and Testing Library.
- Configured TypeScript and Vite for the frontend project.
- Created Docker and Nginx configurations for local development and production environments.
- Established a PostgreSQL initialization script for setting up application roles.

docs: add README and environment configuration for infra

- Included README for the infra directory, detailing local development setup and service descriptions.
- Created an example environment configuration file for local development with placeholders for sensitive information.

Makefile

@@ -0,0 +1,23 @@
+.PHONY: dev down migrate backend-check frontend-check check
+
+dev:
+	docker compose --env-file infra/.env -f infra/docker-compose.yml up --build
+
+down:
+	docker compose --env-file infra/.env -f infra/docker-compose.yml down
+
+migrate:
+	docker compose --env-file infra/.env -f infra/docker-compose.yml run --rm migrate
+
+backend-check:
+	uv run --project backend ruff check backend
+	uv run --project backend mypy --config-file backend/pyproject.toml backend/app
+	uv run --project backend pytest backend
+
+frontend-check:
+	npx --yes pnpm@9.15.9 --dir frontend lint
+	npx --yes pnpm@9.15.9 --dir frontend typecheck
+	npx --yes pnpm@9.15.9 --dir frontend test
+	npx --yes pnpm@9.15.9 --dir frontend build
+
+check: backend-check frontend-check