build(frontend): upgrade to tailwindcss v4

- Upgrade to Tailwind CSS v4.2.0 with explicit CLI dependency
- Add @tailwindcss/cli and tailwindcss as devDependencies
- Update build scripts to use bunx @tailwindcss/cli
- Include new transitive dependencies for enhanced CSS processing

Makefile

@@ -1,4 +1,4 @@
-.PHONY: all frontend backend clean dev
+.PHONY: all frontend backend clean dev docker docker-run
 
 all: frontend backend
 
@@ -15,3 +15,9 @@ clean:
 dev:
 	cd backend && go run ./cmd --listen 0.0.0.0 &
 	cd frontend && bun run dev
+
+docker:
+	docker build -t aethera .
+
+docker-run:
+	docker run -p 8080:8080 -v aethera-data:/app/data aethera