Integrate complete display layouts

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

@@ -39,8 +39,8 @@ rg -Fq 'HomePreferences.resetHomeDefaults();' "$system_settings" \
 if rg -q 'HomePreferences\.(favorites|initialized)\s*=' "$system_settings"; then
     fail 'restoreDefaults mutates Home aliases instead of using resetHomeDefaults'
 fi
-rg -Fq 'root.protectDisplays(protectedDisplays)' "$system_settings" \
-    || fail 'restoreDefaults can apply unconfirmed display geometry during reload'
+rg -Fq 'DesktopPreferences.resetDesktopDefaults();' "$system_settings" \
+    || fail 'restoreDefaults does not clear confirmed display layout fields'
 rg -Fq 'Keybinds.applyReload();' "$system_settings" \
     || fail 'restoreDefaults does not replay shipped keybindings'
 rg -Fq 'root.applyWallpaper(String(DesktopPreferences.get("wallpaperPath") ?? ""));' "$system_settings" \
@@ -120,7 +120,7 @@ before="$(qs_for_harness ipc call settings-system-test stored windowRounding)"
 # ── Reset spans every store, not just the schema one ─────────────────────────
 qs_for_harness ipc call settings-system-test seedHome >/dev/null
 qs_for_harness ipc call settings-system-test commit dockHideDelayMs 900 >/dev/null
-display_fixture='{"DP-2":{"mode":"4500x3000@60","scale":1.5,"transform":0}}'
+display_fixture='{"DP-2":{"mode":"4500x3000@60","scale":1.5,"transform":0,"x":0,"y":0,"primary":true},"HDMI-A-1":{"mode":"2560x1440@60","scale":1,"transform":0,"x":3000,"y":0,"primary":false}}'
 [[ "$(qs_for_harness ipc call settings-system-test commit displays "$display_fixture")" == "true" ]] \
     || fail 'the protected display fixture did not apply'
 sleep 0.4
@@ -138,7 +138,6 @@ sleep 0.6
 reset_state="$(qs_for_harness ipc call settings-system-test resetState)"
 jq -e '.calls == [
     "display.block:true",
-    "display.protect",
     "keybinds.reload",
     "wallpaper.set:",
     "lock.regenerate",
@@ -164,8 +163,8 @@ for default_case in \
     [[ "$(qs_for_harness ipc call settings-system-test stored "$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'
+[[ "$(qs_for_harness ipc call settings-system-test stored displays | jq -cS .)" == '{}' ]] \
+    || fail 'reset retained confirmed arrangement fields instead of returning startup to shipped placement'
 
 home_after="$(qs_for_harness ipc call settings-system-test homeState)"
 jq -e '.count == 0 and .initialized == false' <<<"$home_after" >/dev/null \