feat: KDE config 33 packages + source archival in Makefile

- Enabled kirigami (core-only, QML disabled) + kf6-kio (KIOCORE_ONLY)
  in redbear-full.toml (total 33 KDE packages: 31 KF6 + kdecoration +
  kglobalacceld + kwin + kirigami + kf6-kio)
- Plasma packages (framework/workspace/desktop), breeze, kde-cli-tools
  documented as blocked — cookbook dependency resolver bug prevents
  deps (kdecoration, kf6-extra-cmake-modules) from being scheduled
  before dependents. Remaining blockers: kf6-knewstuff/kwallet need
  KF6Attica (not in tree)
- mk/redbear.mk: 'make sources' target archives all fully-patched
  sources; hooked into 'make all' as dependency of harddrive.img
- Removed archive step from build-redbear.sh (now in Makefile)
- 210 source archives generated, 171 packages in manifest

mk/redbear.mk

@@ -14,3 +14,22 @@ redbear: $(REDBEAR_TAG)
 
 redbear_clean:
 	rm -f "$(REDBEAR_TAG)"
+
+# Source archival — exports fully-patched, versioned source archives
+# for all recipes with source/ directories to sources/<target>/
+# Runs after `make all` and also standalone via `make sources`
+SOURCES_DIR=$(BUILD)/../sources/$(TARGET)
+SOURCES_TAG=$(SOURCES_DIR)/.sources-tag
+
+# Standalone: archive what's cached (no rebuild needed)
+sources:
+	@echo "Archiving fully-patched source packages..."
+	bash local/scripts/archive-sources.sh --all
+	@mkdir -p "$(SOURCES_DIR)"
+	@touch "$(SOURCES_TAG)"
+	@echo "Sources archived: $$(wc -l < $(SOURCES_DIR)/packages.txt 2>/dev/null || echo 0) packages"
+
+# Hook: run after full build
+$(BUILD)/harddrive.img: sources
+
+FORCE: