feat: DEAICUP lotus panic screen + F2 fbcon abstraction

- panic screen now draws embedded ohMyLogo.png (384px RGBA, gen_panic_logo.py); background color sampled from image corners so screen bg matches logo bg
- F2: include/utsm/fbcon.h unified framebuffer console (pixel/blend/fill/rgba-image/text with FBCON_HAVE_FONT opt-in); panic.c migrated onto it
- build.ps1 regenerates panic_logo_data.inc when ohMyLogo.png changes

SYSTEM/system/deshab64/FUCK

@@ -1,4 +1,4 @@
-# Deshab Kernel Configuration — dev 变体（build/configs/dev/FUCK）
+# Deshab Kernel Configuration — dev 变体（build/configs/dev/FUCK）
 # build.ps1 -Variant dev 打包前注入 SYSTEM/system/deshab64/FUCK
 # 开发者模式：selftest 开、dev_mode 自动跑 shell.elf 测试、日志持久化、跳过向导直达桌面
 
@@ -89,3 +89,5 @@ lib_path=lib
 linux_lib_guest_path=/usr/lib/deshab
 linux_lib_sync=1
 pe_dll_search=1
+
+