Makefile: run download-pdfs on no-rebuild path to pull fresh upstream PDFs

Agent-Logs-Url: https://github.com/TUBAF-IfI-LiaScript/TUBAF-IfI-LiaScript.github.io/sessions/eb316b35-f237-4c26-9776-ef46841ef1da

Co-authored-by: vgoehler <1705385+vgoehler@users.noreply.github.com>

Author: Copilot

Makefile

@@ -15,6 +15,7 @@ $(1): $(1).yml
 		$(MAKE) force-build-$(1); \
 	else \
 		echo "📄 Using existing $(1).html and assets"; \
+		$(MAKE) download-pdfs-$(1); \
 	fi
 
 force-build-$(1): clean-$(1) download-pdfs-$(1) build-$(1) organize-$(1) update-cache-$(1) mark-changed