feat: UI strict-error mode - ohMyLogo login intro, typewriter removed, fatal instrumentation

- desktop boot screen: typewriter effect removed, whole screen drawn in one pass
- login: ohMyLogo (DEAICUP lotus, 288px embedded) intro screen before password card
- strict error policy instrumentation (zero degradation): login LOGIN-E01..E05 (integrity/badctx/noconf/nouser/nohash) and desktop DSK-E01 now full-screen fatal with symbol + halt instead of silent skip
- root-cause fixed: missing .build_tmp/mkfat32.ps1 silently left SATA sidecar stale (login.elf 'not found' degradation) - replaced with CODE/linux/make_sata_sidecar.sh (auto adaptive FAT32 rebuild each build)
- recreated lost CODE/login/patch_login_hash.ps1 (.text SHA256 -> .hashseg)
- dev config now full flow: show_logo=1, wizard+login enabled, dev shell off

CODE/login/MAKEFILE

@@ -3,7 +3,7 @@ LD := ld.lld
 
 ROOT := ../..
 OUT := $(ROOT)/SYSTEM/system/user/use/login.elf
-PATCHER := $(ROOT)/.build_tmp/patch_login_hash.ps1
+PATCHER := patch_login_hash.ps1
 
 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../UTSM/include -I../firstInit -O2
 LDFLAGS := -nostdlib -static -pie -z max-page-size=0x1000 -T linker.ld
@@ -21,7 +21,6 @@ $(OUT): $(OBJECTS) linker.ld
 	$(LD) $(LDFLAGS) -o $@ $(OBJECTS)
 	@echo [login] patching .text SHA256 into .hashseg...
 	powershell -NoProfile -ExecutionPolicy Bypass -File $(PATCHER) $@
-
 %.o: %.c
 	$(CC) $(CFLAGS) -c $< -o $@