refactor: move DOOM out to the mtkports ports tree

Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_018Ae69wJS7sueQMUwNxV3nX

GNUmakefile

@@ -181,6 +181,20 @@ kernel: kernel-deps
 programs:
 	$(MAKE) -C programs
 
+# Build out-of-tree ports (~/dev/mtkports) and stage their app bundles into
+# programs/bin/apps/. Opt-in: the base ISO ships only what lives in
+# programs/src/, so this is never a dependency of the default build. Run it
+# before 'make ramdisk' to include ports in the image.
+MTKPORTS ?= $(HOME)/dev/mtkports
+
+.PHONY: ports
+ports: programs
+	@if [ -d "$(MTKPORTS)" ]; then \
+	    $(MAKE) -C "$(MTKPORTS)" install MONTAUKOS="$(CURDIR)"; \
+	else \
+	    echo "ports: $(MTKPORTS) not found - skipping (set MTKPORTS=/path/to/mtkports)"; \
+	fi
+
 .PHONY: ramdisk
 ramdisk: limine/limine kernel programs
 	mkdir -p programs/bin/boot/limine
@@ -245,6 +259,18 @@ release: limine/limine kernel ramdisk
 	cp kernel/bin-$(ARCH)/kernel iso_root/boot/
 	strip iso_root/boot/kernel
 	cp -r programs/bin .release-tmp
+# A release ISO ships only in-tree apps, so drop any out-of-tree port bundles
+# that happen to be staged in programs/bin/apps (each carries a .port marker).
+# Pass RELEASE_WITH_PORTS=1 to deliberately cut a ports-included image.
+ifneq ($(RELEASE_WITH_PORTS),1)
+	@for m in $$(find .release-tmp/apps -name .port 2>/dev/null); do \
+	    d=$$(dirname $$m); \
+	    echo "release: excluding port bundle $$(basename $$d)"; \
+	    rm -rf "$$d"; \
+	done
+else
+	@echo "release: RELEASE_WITH_PORTS=1 - including out-of-tree port bundles"
+endif
 	find .release-tmp -name '*.elf' -exec strip {} +
 	./scripts/mkramdisk.sh .release-tmp iso_root/boot/ramdisk.tar
 	rm -rf .release-tmp