Fix GRUB bootloader config dir: grub-pc → grub-efi

Build uses --bootloaders "grub-efi,syslinux" so live-build reads
config/bootloaders/grub-efi/ for the UEFI GRUB config. The directory
was incorrectly named grub-pc, causing live-build to ignore our custom
grub.cfg and generate a default one (missing toram, GSP-off entries).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

iso/builder/config/bootloaders/grub-efi/config.cfg

@@ -0,0 +1,31 @@
+set default=0
+set timeout=5
+
+if [ x$feature_default_font_path = xy ] ; then
+    font=unicode
+else
+    font=$prefix/unicode.pf2
+fi
+
+if loadfont $font ; then
+    set gfxmode=1920x1080,1280x1024,auto
+    set gfxpayload=keep
+    insmod efi_gop
+    insmod efi_uga
+    insmod video_bochs
+    insmod video_cirrus
+else
+    set gfxmode=auto
+    insmod all_video
+fi
+
+insmod serial
+serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
+
+insmod gfxterm
+insmod png
+
+source /boot/grub/theme.cfg
+
+terminal_input console serial
+terminal_output gfxterm serial

iso/builder/config/bootloaders/grub-efi/grub.cfg

@@ -0,0 +1,54 @@
+source /boot/grub/config.cfg
+
+echo ""
+echo "  ███████╗ █████╗ ███████╗██╗   ██╗      ██████╗ ███████╗███████╗"
+echo "  ██╔════╝██╔══██╗██╔════╝╚██╗ ██╔╝      ██╔══██╗██╔════╝██╔════╝"
+echo "  █████╗  ███████║███████╗ ╚████╔╝ █████╗██████╔╝█████╗  █████╗"
+echo "  ██╔══╝  ██╔══██║╚════██║  ╚██╔╝  ╚════╝██╔══██╗██╔══╝  ██╔══╝"
+echo "  ███████╗██║  ██║███████║   ██║         ██████╔╝███████╗███████╗"
+echo "  ╚══════╝╚═╝  ╚═╝╚══════╝   ╚═╝         ╚═════╝ ╚══════╝╚══════╝"
+echo "  Hardware Audit LiveCD"
+echo ""
+
+menuentry "EASY-BEE" {
+    linux   @KERNEL_LIVE@ @APPEND_LIVE@ nomodeset bee.nvidia.mode=normal net.ifnames=0 biosdevname=0 mitigations=off transparent_hugepage=always numa_balancing=disable pcie_aspm=off intel_idle.max_cstate=1 processor.max_cstate=1 nowatchdog nosoftlockup
+    initrd  @INITRD_LIVE@
+}
+
+submenu "EASY-BEE (advanced options) -->" {
+    menuentry "EASY-BEE — load to RAM (toram)" {
+        linux   @KERNEL_LIVE@ @APPEND_LIVE@ toram nomodeset bee.nvidia.mode=normal net.ifnames=0 biosdevname=0 mitigations=off transparent_hugepage=always numa_balancing=disable pcie_aspm=off intel_idle.max_cstate=1 processor.max_cstate=1 nowatchdog nosoftlockup
+        initrd  @INITRD_LIVE@
+    }
+
+    menuentry "EASY-BEE — GSP=off" {
+        linux   @KERNEL_LIVE@ @APPEND_LIVE@ nomodeset bee.nvidia.mode=gsp-off net.ifnames=0 biosdevname=0 mitigations=off transparent_hugepage=always numa_balancing=disable pcie_aspm=off intel_idle.max_cstate=1 processor.max_cstate=1 nowatchdog nosoftlockup
+        initrd  @INITRD_LIVE@
+    }
+
+    menuentry "EASY-BEE — KMS (no nomodeset)" {
+        linux   @KERNEL_LIVE@ @APPEND_LIVE@ bee.nvidia.mode=normal net.ifnames=0 biosdevname=0 mitigations=off transparent_hugepage=always numa_balancing=disable pcie_aspm=off intel_idle.max_cstate=1 processor.max_cstate=1 nowatchdog nosoftlockup
+        initrd  @INITRD_LIVE@
+    }
+
+    menuentry "EASY-BEE — fail-safe" {
+        linux   @KERNEL_LIVE@ @APPEND_LIVE@ nomodeset bee.nvidia.mode=gsp-off noapic noapm nodma nomce nolapic nosmp vga=normal net.ifnames=0 biosdevname=0
+        initrd  @INITRD_LIVE@
+    }
+}
+
+if [ "${grub_platform}" = "efi" ]; then
+    menuentry "Memory Test (memtest86+)" {
+        chainloader /boot/memtest86+x64.efi
+    }
+else
+    menuentry "Memory Test (memtest86+)" {
+        linux16 /boot/memtest86+x64.bin
+    }
+fi
+
+if [ "${grub_platform}" = "efi" ]; then
+    menuentry "UEFI Firmware Settings" {
+        fwsetup
+    }
+fi

iso/builder/config/bootloaders/grub-efi/live-theme/theme.txt

@@ -0,0 +1,51 @@
+desktop-color: "#000000"
+title-color: "#f5a800"
+title-font: "Unifont Regular 16"
+title-text: ""
+message-font: "Unifont Regular 16"
+terminal-font: "Unifont Regular 16"
+
+#help bar at the bottom
++ label {
+        top = 100%-50
+        left = 0
+        width = 100%
+        height = 20
+        text = "@KEYMAP_SHORT@"
+        align = "center"
+        color = "#5a4800"
+        font = "Unifont Regular 16"
+}
+
+#boot menu
++ boot_menu {
+        left = 20%
+        width = 60%
+        top = 62%
+        height = 38%-80
+        item_color = "#c88000"
+        item_font = "Unifont Regular 16"
+        selected_item_color= "#f5a800"
+        selected_item_font = "Unifont Regular 16"
+        item_height = 16
+        item_padding = 0
+        item_spacing = 4
+        icon_width = 0
+        icon_heigh = 0
+        item_icon_space = 0
+}
+
+#progress bar
++ progress_bar {
+        id = "__timeout__"
+        left = 20%
+        top = 100%-80
+        height = 14
+        width = 60%
+        font = "Unifont Regular 16"
+        text_color = "#0a0a00"
+        fg_color = "#f5a800"
+        bg_color = "#2a2200"
+        border_color = "#5a4800"
+        text = "@TIMEOUT_NOTIFICATION_LONG@"
+}

iso/builder/config/bootloaders/grub-efi/theme.cfg

@@ -0,0 +1,9 @@
+set color_normal=light-gray/black
+set color_highlight=yellow/black
+
+if [ -e /boot/grub/splash.png ]; then
+    set theme=/boot/grub/live-theme/theme.txt
+else
+    set menu_color_normal=yellow/black
+    set menu_color_highlight=white/brown
+fi