Fix broken desktop after gaming profile: skip risky dracut regen.

Carveout-only changes no longer run dracut --regenerate-all (known to
leave wallpaper with no Plasma shell on Nobara). Add z13-recover-desktop
for emergency reset from TTY.

Co-authored-by: Cursor <[email protected]>

lib/memory-profiles.sh

@@ -191,20 +191,33 @@ clear_ttm_config() {
 }
 
 regenerate_initramfs() {
+    # Only needed when /etc/modprobe.d/ttm.conf changes. Carveout (UMA) is firmware
+    # staged via sysfs and must NOT trigger a full initramfs rebuild — that has caused
+    # broken sessions on Nobara (wallpaper only, no plasmashell).
+    if [[ "${REGEN_INITRAMFS:-0}" != "1" ]]; then
+        log "Skipping initramfs regen (not required for this change)."
+        return
+    fi
+
+    local running_kernel
+    running_kernel="$(uname -r)"
+
     if command -v dracut >/dev/null 2>&1; then
-        log "Regenerating initramfs (dracut)..."
-        dracut --force --regenerate-all 2>/dev/null || dracut --force
+        log "Regenerating initramfs for ${running_kernel} only..."
+        dracut --force -k "${running_kernel}" || {
+            log "WARN: dracut failed; try: sudo dracut --force -k ${running_kernel}"
+        }
         return
     fi
     if command -v update-initramfs >/dev/null 2>&1; then
-        update-initramfs -u -k all
+        update-initramfs -u -k "${running_kernel}"
         return
     fi
     if command -v mkinitcpio >/dev/null 2>&1; then
         mkinitcpio -P
         return
     fi
-    log "No initramfs tool found; reboot may still apply modprobe.d on next boot."
+    log "No initramfs tool found; modprobe.d applies on next boot without regen."
 }
 
 set_carveout_index() {
@@ -245,13 +258,17 @@ apply_profile() {
     fi
 
     if [[ "${ttm_action}" == "clear" ]]; then
-        clear_ttm_config
+        if [[ -f "${TTM_CONF}" ]]; then
+            clear_ttm_config
+            REGEN_INITRAMFS=1 regenerate_initramfs
+        else
+            clear_ttm_config
+        fi
     elif [[ -n "${ttm_gb}" ]]; then
         write_ttm_config "${ttm_gb}"
+        REGEN_INITRAMFS=1 regenerate_initramfs
     fi
 
-    regenerate_initramfs
-
     cat <<EOF
 Profile "${label}" staged successfully.