more robust compression

scripts/Makefile.static

@@ -0,0 +1,17 @@
+SRCS = $(wildcard *.html *.xml *.txt *.css *.map *.pdf)
+
+ZSTD = $(patsubst %,%.zst,$(SRCS))
+BR = $(patsubst %,%.br,$(SRCS))
+GZ = $(patsubst %,%.gz,$(SRCS))
+
+.PHONY: all
+all: $(ZSTD) $(BR) $(GZ)
+
+%.br: %
+	brotli $<
+
+%.zst: %
+	zstd -19 $<
+
+%.gz: %
+	zopfli $<