diff --git a/CLAUDE.md b/CLAUDE.md
index d1744cd..8b92ec5 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -14,14 +14,17 @@ The authoritative requirements are in `wiki/ProductRequirementsDocument.md`. Tec
 
 ## Entwicklungs-Commands
 
+Run `make` without arguments for a full list with descriptions.
+
 ```bash
-make db           # PostgreSQL via Docker starten (oder infra-postgres-1 verwenden)
-make dev          # Django-Dev-Server (Port 8000)
-make css          # Tailwind CSS im Watch-Modus
+make db           # PostgreSQL starten (Noop wenn :5432 bereits erreichbar)
+make css          # Tailwind CSS Watch-Modus — Terminal A, laufen lassen
+make dev          # Django-Dev-Server auf :9000 — Terminal B
+make seed         # Seed-Daten laden (idempotent)
+make superuser    # Superuser anlegen (einmalig für /admin/)
 make migrate      # Migrations generieren und ausführen
 make test         # pytest ausführen
 make lint         # ruff + mypy
-uv run manage.py test vergabe_teilnahme.apps.<app>   # Einzelne App testen
 uv run pytest vergabe_teilnahme/apps/<app>/tests/    # Einzelne Testdatei
 ```
 
diff --git a/Makefile b/Makefile
index e7930eb..b36abe2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,30 +1,43 @@
-.PHONY: dev db migrate shell test lint css createsuperuser collectstatic
+.PHONY: help db dev css seed migrate test lint shell superuser collectstatic
 
-db:
-	docker compose -f docker-compose.dev.yml up -d 2>/dev/null || echo "DB already running"
+.DEFAULT_GOAL := help
 
-dev:
-	uv run manage.py runserver 0.0.0.0:8000
+help: ## List available make targets
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) \
+		| awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[36m%-16s\033[0m %s\n", $$1, $$2}'
 
-css:
+db: ## Start PostgreSQL via Docker (skips if already reachable on :5432)
+	@if nc -z localhost 5432 2>/dev/null; then \
+		echo "✓ DB bereits erreichbar auf :5432 — kein Docker-Start nötig"; \
+	else \
+		docker compose -f docker-compose.dev.yml up -d; \
+	fi
+
+dev: ## Start Django dev server on :9000
+	uv run manage.py runserver 0.0.0.0:9000
+
+css: ## Start Tailwind CSS watcher (Vite, rebuild on change)
 	npm run dev
 
-migrate:
+seed: ## Load dev seed data — users, one Ausschreibung, Lose, etc. (idempotent)
+	uv run manage.py seed_dev
+
+superuser: ## Create a Django superuser for /admin/ access
+	uv run manage.py createsuperuser
+
+migrate: ## Generate and apply all pending migrations
 	uv run manage.py makemigrations
 	uv run manage.py migrate
 
-shell:
-	uv run manage.py shell_plus 2>/dev/null || uv run manage.py shell
-
-test:
+test: ## Run the full pytest test suite
 	uv run pytest
 
-lint:
+lint: ## Run ruff (style) and mypy (types)
 	uv run ruff check .
 	uv run mypy vergabe_teilnahme/
 
-createsuperuser:
-	uv run manage.py createsuperuser
+shell: ## Open a Django shell (shell_plus if available)
+	uv run manage.py shell_plus 2>/dev/null || uv run manage.py shell
 
-collectstatic:
+collectstatic: ## Collect static files into staticfiles/ (production step)
 	uv run manage.py collectstatic --noinput
diff --git a/vite.config.js b/vite.config.js
index e2ae93b..375d929 100644
--- a/vite.config.js
+++ b/vite.config.js
@@ -8,6 +8,9 @@ export default defineConfig({
     emptyOutDir: true,
     rollupOptions: {
       input: 'static/src/main.css',
+      output: {
+        assetFileNames: '[name][extname]',
+      },
     },
   },
 })