Database setup for the Website service (#13)

This PR contains the work done to introduce a _Fluent_-based persistence layer for the Website service, selectable at runtime alongside the existing in-memory default, plus the local dev tooling and docs to support it.

To provide further details about the work:

* Persistence package
  * The `Driver` and `TLS` enumerations
  * The `Configuration` type
  * The `Service` factory that builds the  service
  * `PrepareDB` for migrations registration
  * The `Probe` for readiness checks.

* App integration
  *  Builds the driver, registers migrations, and attaches `Fluent` to the service lifecycle so it starts/stops with the HTTP server.
  * Migrate-on-boot is gated to the in-memory backend; MySQL/MariaDB is migrated out of band via --database-migrate so shared databases never race on startup.
  * The `ConfigReader+Properties` extension maps database.* config keys onto the driver.

* Library
  * Added database configuration constants.
  * The `HealthController` controller gains a readiness probe: `GET /health/ready` checks whether the database is reachable, separate from the existing liveness check.

* Others
  * Updated the `docker-compose` files to support a database service behind a database profile, and hardened for local development
  * New database targets on the `Makefile` file and overall documentation updated
  * Updated the `.env.local`, `Dockerfile`, and `README` files to document the persistence workflow, config keys, and local DB commands

Reviewed-on: rock-n-code/loud-amsterdam#13
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

Services/Website/Makefile

@@ -38,36 +38,84 @@ pkg-clean: ## Remove the Swift build artifacts
 	@swift package clean
 
 .PHONY: pkg-reset
-pkg-reset: ## Resets the complete SPM cache/build folder
+pkg-reset: ## Reset the SPM cache and build folder
 	@swift package reset
 
 .PHONY: pkg-outdated
-pkg-outdated: ## Lists the SPM package dependencies that can be updated
+pkg-outdated: ## List the SPM dependencies that can be updated
 	@swift package update --dry-run
 
 .PHONY: pkg-update
-pkg-update: ## Updates the SPM package dependencies
+pkg-update: ## Update the SPM dependencies
 	@swift package update
 
 # --- Local development --------------------------------------------------------
 
-.PHONY: img-build
-img-build: ## Build the local dev image
-	@docker compose build
+.PHONY: site-run
+site-run: ## Run the website locally, rebuilding on source changes
+	@hb watch
 
-.PHONY: img-mount
-img-mount: ## Mount the service locally (build if needed)
-	@docker compose up --build --detach
+.PHONY: site-mount
+site-mount: ## Mount the website locally
+	@docker compose up \
+		--build \
+		--detach
 
-.PHONY: img-unmount
-img-unmount: ## Unmount and remove the local service
+.PHONY: site-unmount
+site-unmount: ## Unmount and remove the local website
 	@docker compose down
 	@$(MAKE) img-remove
 
+# --- Local database -----------------------------------------------------------
+
+.PHONY: db-mount
+db-mount: ## Start the local database instance
+	@docker compose \
+		--profile database up \
+		--detach \
+		--wait mariadb
+
+.PHONY: db-migrate
+db-migrate: ## Run the migrations against the local database instance
+	@DATABASE_DRIVER=mysql \
+	DATABASE_HOST=127.0.0.1 \
+	DATABASE_TLS=off \
+	swift run \
+		Website \
+		--database-migrate
+
+.PHONY: db-shell
+db-shell: ## Open a SQL shell on the local database instance
+	@docker compose \
+		--profile database \
+		exec mariadb \
+		mariadb \
+			--user=$(or $(DATABASE_USERNAME),loud) \
+			--password=$(or $(DATABASE_PASSWORD),loud) \
+			$(or $(DATABASE_NAME),loud)
+
+.PHONY: db-unmount
+db-unmount: ## Stop and remove the local database instance (keeps the data volume)
+	@docker compose \
+		--profile database down mariadb
+
+.PHONY: db-reset
+db-reset: ## Stop and remove the local database instance and delete its data volume
+	@docker compose \
+		--profile database down mariadb \
+		--volumes
+
 # --- Registry deployment ------------------------------------------------------
 
+.PHONY: img-check
+img-check: ## Check the production image builds
+	@docker build \
+		--platform linux/amd64 \
+		--file Dockerfile \
+		../..
+
 .PHONY: img-release
-img-release: ## Build the production (amd64) image, tag with version + latest, push both
+img-release: ## Build and push the production image into the container registry
 	@if [ -z "$(version)" ] || [ "$(version)" = "latest" ]; then \
 		echo "Error: 'version' must be an explicit tag — e.g. make img-release version=1.2.3"; \
 		exit 1; \