Standardizes build process and adds OVERVIEW.md for each

Bomberman (U)/copilot/Makefile

@@ -1,19 +1,25 @@
 CA65 ?= ca65
 LD65 ?= ld65
 
-all: reconstructed_bomberman.nes
+all: reconstructed.nes verify
 
-main.o: main.s symbols.inc locals.inc
-	$(CA65) -g -o $@ main.s
+prg.o: prg.s symbols.inc locals.inc
+	$(CA65) -g -o $@ $<
 
-reconstructed_bomberman.nes: main.o linker.cfg
-	$(LD65) -C linker.cfg -o $@ main.o
+header.o: header.s
+	$(CA65) -g -o $@ $<
 
-verify: reconstructed_bomberman.nes
-	@test "$$(wc -c < reconstructed_bomberman.nes)" -eq 24592
-	cmp -l original_bomberman.nes reconstructed_bomberman.nes
+chr.o: chr.s
+	$(CA65) -g -o $@ $<
+
+reconstructed.nes: header.o prg.o chr.o linker.cfg
+	$(LD65) -C linker.cfg -m reconstructed.map -Ln reconstructed.lbl -o $@ header.o prg.o chr.o
+
+verify: reconstructed.nes
+	cmp reconstructed.nes rom.nes
+	@echo "Byte-identical ROM verified."
 
 clean:
-	rm -f main.o reconstructed_bomberman.nes
+	rm -f *.o reconstructed.nes reconstructed.map reconstructed.lbl
 
-.PHONY: all verify clean
+.PHONY: all verify clean