feat(panic): FUCK [panic] mode=strict|fallback + realtest image variant

- UTSM panic_full returns in fallback mode (logs [PANIC:FALLBACK] + code + hit
  count); panic_halt keeps always-halt sites (CPU exception, VMM-E11 LA57,
  VMM-E15 DSK jump, UTSM-E42 test hook). Call sites given safe continuations.
- Mode passed to DSK/FirstInit/login/desktop via DSK_BOOT_FLAG_PANIC_FALLBACK;
  DKM kernel_api.panic / kern.log.panic return to driver; ext4 fatal aborts the
  op via setjmp/longjmp and DSK falls back to FAT32 ESP.
- build.ps1/Makefile: dev=strict, release=fallback, new realtest (release
  options + strict); default -Variant all; serialized iso packing under -j.
- Fix '*/' inside comments (dkm.h, kernel_api.h, bus.c) that broke the build.
- Includes pending work: dkm_bus service bus, mt7920/wlan drivers, desktop
  files/startmenu/prank, pe-tools, diskinfo, docs.

Co-authored-by: Cursor <cursoragent@cursor.com>

CODE/tools/diskinfo/MAKEFILE

@@ -0,0 +1,25 @@
+CC ?= clang
+LD ?= ld.lld
+
+ROOT := ../../..
+OUT := $(ROOT)/SYSTEM/bin/diskinfo.elf
+
+CFLAGS := -target x86_64-unknown-none -std=c11 -ffreestanding -fno-builtin -fno-stack-protector -fpie -mno-red-zone -mno-sse -mno-sse2 -mno-mmx -msoft-float -m64 -Wall -Wextra -I../../sdk/include -I../.. -O2
+LDFLAGS := -nostdlib -static -pie -z max-page-size=0x1000 -T linker.ld
+
+C_SOURCES := main.c
+OBJECTS := $(C_SOURCES:.c=.o)
+
+.PHONY: all clean
+
+all: $(OUT)
+
+$(OUT): $(OBJECTS) linker.ld
+	@mkdir -p "$(dir $(OUT))"
+	$(LD) $(LDFLAGS) -o $@ $(OBJECTS)
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+clean:
+	powershell -NoProfile -Command "Get-ChildItem -Path . -Recurse -Filter *.o | Remove-Item -Force; if (Test-Path '$(OUT)') { Remove-Item '$(OUT)' -Force }"