Integrate managed lock screen recovery

tests/quickshell/settings-commit-reset-contract.sh

@@ -45,6 +45,8 @@ rg -Fq 'Keybinds.applyReload();' "$system_settings" \
     || fail 'restoreDefaults does not replay shipped keybindings'
 rg -Fq 'root.applyWallpaper(String(DesktopPreferences.get("wallpaperPath") ?? ""));' "$system_settings" \
     || fail 'restoreDefaults does not visibly reapply the shipped wallpaper'
+rg -Fq 'LockScreen.regenerate();' "$system_settings" \
+    || fail 'restoreDefaults does not regenerate the shipped lock screen'
 rg -Fq 'const effectivePath = path === "" ? root.shippedPath : path;' "$wallpaper_service" \
     || fail 'clearing wallpaper preference leaves the old image visible'
 rg -Fq 'property string storedValue:' "$wallpaper_service" \
@@ -139,12 +141,24 @@ jq -e '.calls == [
     "display.protect",
     "keybinds.reload",
     "wallpaper.set:",
+    "lock.regenerate",
     "display.block:false"
 ] and .displayBlocked == false' <<<"$reset_state" >/dev/null \
     || fail "reset did not safely replay non-reactive state: $reset_state"
 
 [[ "$(qs_for_harness ipc call settings-system-test stored dockHideDelayMs)" == "250" ]] \
     || fail 'reset did not restore a schema default'
+for default_case in \
+    'lockBackgroundMode|"screenshot"' \
+    'lockBlurLevel|3' \
+    'lockShowClock|true' \
+    'lockShowDate|true' \
+    'lockShowUser|true' \
+    'lockFadeOnEmpty|false'; do
+    IFS='|' read -r key expected <<<"$default_case"
+    [[ "$(qs_for_harness ipc call settings-system-test stored "$key")" == "$expected" ]] \
+        || fail "reset did not restore $key to $expected"
+done
 [[ "$(qs_for_harness ipc call settings-system-test stored displays | jq -cS .)" == "$(jq -cS . <<<"$display_fixture")" ]] \
     || fail 'reset replaced confirmed display geometry without confirmation'