Add display identification overlays

tests/quickshell/display-arrangement-contract.sh

@@ -6,6 +6,9 @@ repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
 component="$repo_dir/config/dot/quickshell/modules/settings/DisplayArrangement.qml"
 page="$repo_dir/config/dot/quickshell/modules/settings/DisplaysPage.qml"
 harness="$repo_dir/config/dot/quickshell/display-arrangement-harness.qml"
+identify="$repo_dir/config/dot/quickshell/modules/settings/DisplayIdentify.qml"
+service="$repo_dir/config/dot/quickshell/services/Displays.qml"
+shell="$repo_dir/config/dot/quickshell/shell.qml"
 
 fail() {
     printf 'display arrangement contract: %s\n' "$1" >&2
@@ -30,6 +33,22 @@ rg -Fq 'DisplayArrangement {' "$page" \
     || fail 'Displays page does not expose the arrangement canvas'
 rg -Fq 'visible: Displays.monitors.length > 1' "$page" \
     || fail 'arrangement is shown for a single display'
+[[ -f "$identify" ]] || fail 'DisplayIdentify.qml is missing'
+for contract in \
+    'model: Quickshell.screens' \
+    'WlrLayershell.keyboardFocus: WlrKeyboardFocus.None' \
+    'mask: Region {}' \
+    'visible: Displays.identifying' \
+    'text: String(win.number)' \
+    'text: win.connector'; do
+    rg -Fq "$contract" "$identify" \
+        || fail "display identification overlay is incomplete: $contract"
+done
+rg -Fq 'DisplayIdentify {}' "$shell" \
+    || fail 'display identification overlays are not shell-owned'
+rg -Fq 'function identify()' "$service" \
+    && rg -Fq 'interval: 3000' "$service" \
+    || fail 'display identification does not use one three-second service timer'
 
 state_home="$(mktemp -d /tmp/panama-display-arrangement-state.XXXXXX)"
 harness_pid=""
@@ -82,4 +101,11 @@ jq -e '. == [
 ]' <<<"$primary" >/dev/null \
     || fail "Make primary did not normalize the selected output to 0,0: $primary"
 
+ipc identify >/dev/null
+[[ "$(ipc identifying)" == "true" ]] \
+    || fail 'identify did not reveal the overlays'
+sleep 3.2
+[[ "$(ipc identifying)" == "false" ]] \
+    || fail 'identify overlays did not disappear after one three-second timer'
+
 printf 'display arrangement contract: PASS\n'