From 279b3a07eb06f86b8825aa0a53e71cd3137e43a7 Mon Sep 17 00:00:00 2001
From: Ariver <shanghai3168@gmail.com>
Date: Fri, 29 May 2026 11:52:56 +0800
Subject: [PATCH] Reduce app grid scroll churn

---
 Scripts/window_logic_qa.sh |  804 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 788 insertions(+), 16 deletions(-)

diff --git a/Scripts/window_logic_qa.sh b/Scripts/window_logic_qa.sh
index c05ae1c..3d90bec 100755
--- a/Scripts/window_logic_qa.sh
+++ b/Scripts/window_logic_qa.sh
@@ -6,8 +6,17 @@
 APP_PROCESS="TagLauncher"
 LAUNCH_AGENT_LABEL="com.taglauncher.app"
 LAUNCH_AGENT_PLIST="$HOME/Library/LaunchAgents/$LAUNCH_AGENT_LABEL.plist"
+SAVED_STATE_DIR="$HOME/Library/Saved Application State/$LAUNCH_AGENT_LABEL.savedState"
 USER_GUI_DOMAIN="gui/$(id -u)"
 RESTORE_LAUNCH_AGENT=false
+LAUNCH_AGENT_PLIST_WAS_PRESENT=false
+LAUNCH_AGENT_BACKUP="$(mktemp -t taglauncher-launchagent.XXXXXX.plist)"
+DEFAULTS_DOMAIN="$LAUNCH_AGENT_LABEL"
+SHOW_DOCK_ICON_WAS_SET=false
+SHOW_DOCK_ICON_VALUE=""
+APP_LANGUAGE_WAS_SET=false
+APP_LANGUAGE_VALUE=""
+FULLSCREEN_QA_PID=""
 CLICK_TOOL="${CLICK_TOOL:-$(command -v cliclick || true)}"
 
 if [[ -z "$CLICK_TOOL" ]]; then
@@ -17,6 +26,61 @@
 
 log() {
   printf '%s\n' "$*"
+}
+
+backup_user_defaults() {
+  local value
+  if value="$(defaults read "$DEFAULTS_DOMAIN" showDockIcon 2>/dev/null)"; then
+    SHOW_DOCK_ICON_WAS_SET=true
+    SHOW_DOCK_ICON_VALUE="$value"
+  fi
+  if value="$(defaults read "$DEFAULTS_DOMAIN" appLanguage 2>/dev/null)"; then
+    APP_LANGUAGE_WAS_SET=true
+    APP_LANGUAGE_VALUE="$value"
+  fi
+}
+
+backup_launch_agent_plist() {
+  if [[ -f "$LAUNCH_AGENT_PLIST" ]]; then
+    LAUNCH_AGENT_PLIST_WAS_PRESENT=true
+    cp "$LAUNCH_AGENT_PLIST" "$LAUNCH_AGENT_BACKUP"
+  fi
+}
+
+restore_user_defaults() {
+  if [[ "$SHOW_DOCK_ICON_WAS_SET" == true ]]; then
+    if [[ "$SHOW_DOCK_ICON_VALUE" == "1" || "$SHOW_DOCK_ICON_VALUE" == "true" || "$SHOW_DOCK_ICON_VALUE" == "TRUE" ]]; then
+      defaults write "$DEFAULTS_DOMAIN" showDockIcon -bool true
+    else
+      defaults write "$DEFAULTS_DOMAIN" showDockIcon -bool false
+    fi
+  else
+    defaults delete "$DEFAULTS_DOMAIN" showDockIcon >/dev/null 2>&1 || true
+  fi
+
+  if [[ "$APP_LANGUAGE_WAS_SET" == true ]]; then
+    defaults write "$DEFAULTS_DOMAIN" appLanguage -string "$APP_LANGUAGE_VALUE"
+  else
+    defaults delete "$DEFAULTS_DOMAIN" appLanguage >/dev/null 2>&1 || true
+  fi
+}
+
+restore_launch_agent_plist() {
+  if [[ "$LAUNCH_AGENT_PLIST_WAS_PRESENT" == true ]]; then
+    mkdir -p "$(dirname "$LAUNCH_AGENT_PLIST")"
+    if [[ -f "$LAUNCH_AGENT_BACKUP" ]]; then
+      cp "$LAUNCH_AGENT_BACKUP" "$LAUNCH_AGENT_PLIST" || true
+    else
+      log "WARN: launch agent backup missing during cleanup"
+    fi
+  else
+    rm -f "$LAUNCH_AGENT_PLIST"
+  fi
+}
+
+reset_dock_for_qa() {
+  killall Dock >/dev/null 2>&1 || true
+  sleep 1.5
 }
 
 send_keycode() {
@@ -39,6 +103,49 @@
 
 send_cmd_w() {
   osascript -e 'tell application "System Events" to keystroke "w" using {command down}'
+}
+
+close_settings_window() {
+  osascript <<'OSA' >/dev/null 2>&1 || true
+tell application "System Events"
+  tell process "TagLauncher"
+    repeat 20 times
+      repeat with windowRef in windows
+        try
+          if (name of windowRef as text) is not "" then
+            click button 1 of windowRef
+            return
+          end if
+        end try
+      end repeat
+      delay 0.1
+    end repeat
+  end tell
+end tell
+OSA
+}
+
+dismiss_reopen_dialog() {
+  osascript <<'OSA' >/dev/null 2>&1 || true
+tell application "System Events"
+  tell process "TagLauncher"
+    repeat 20 times
+      repeat with windowRef in windows
+        repeat with buttonRef in buttons of windowRef
+          try
+            set buttonName to name of buttonRef as text
+            if buttonName contains "Don't" or buttonName contains "Don’t" or buttonName contains "不" then
+              click buttonRef
+              return
+            end if
+          end try
+        end repeat
+      end repeat
+      delay 0.1
+    end repeat
+  end tell
+end tell
+OSA
 }
 
 show_overlay_from_app_menu() {
@@ -89,14 +196,25 @@
   osascript -e 'tell application "System Events" to key code 53' >/dev/null 2>&1 || true
   sleep 0.2
   osascript -e 'tell application "System Events" to key code 53' >/dev/null 2>&1 || true
+  if [[ -n "${FULLSCREEN_QA_PID:-}" ]]; then
+    kill "$FULLSCREEN_QA_PID" >/dev/null 2>&1 || true
+    wait "$FULLSCREEN_QA_PID" >/dev/null 2>&1 || true
+    FULLSCREEN_QA_PID=""
+  fi
   kill_all_taglauncher_instances
+  restore_user_defaults
+  restore_launch_agent_plist
   if [[ "$RESTORE_LAUNCH_AGENT" == true && -f "$LAUNCH_AGENT_PLIST" ]]; then
     launchctl bootstrap "$USER_GUI_DOMAIN" "$LAUNCH_AGENT_PLIST" >/dev/null 2>&1 || true
   fi
 }
 trap cleanup EXIT
+backup_user_defaults
+backup_launch_agent_plist
 
 kill_all_taglauncher_instances() {
+  osascript -e 'tell application "TagLauncher" to quit' >/dev/null 2>&1 || true
+  sleep 0.8
   local pids
   pids="$(pgrep -f '/TagLauncher.app/Contents/MacOS/TagLauncher' || true)"
   if [[ -n "$pids" ]]; then
@@ -118,6 +236,57 @@
   done <<<"$lines"
 }
 
+assert_single_qa_app_instance() {
+  local lines count
+  lines="$(pgrep -fl '/TagLauncher.app/Contents/MacOS/TagLauncher' || true)"
+  [[ -n "$lines" ]] || { echo "FAIL: no TagLauncher process is running" >&2; return 1; }
+  count="$(printf '%s\n' "$lines" | wc -l | tr -d ' ')"
+  if [[ "$count" != "1" || "$lines" != *"$APP_BUNDLE/Contents/MacOS/TagLauncher"* ]]; then
+    echo "FAIL: expected exactly one QA build TagLauncher instance" >&2
+    printf '%s\n' "$lines" >&2
+    return 1
+  fi
+}
+
+assert_single_dock_tile() {
+  local output count names
+  output="$(osascript <<'OSA'
+tell application "System Events"
+  tell process "Dock"
+    set tagCount to 0
+    set tagNames to {}
+    repeat with itemRef in UI elements of list 1
+      try
+        set itemName to name of itemRef as text
+        if itemName is "TagLauncher" then
+          set tagCount to tagCount + 1
+          set end of tagNames to itemName
+        end if
+      end try
+    end repeat
+    return (tagCount as text) & "|" & (tagNames as text)
+  end tell
+end tell
+OSA
+)"
+  count="${output%%|*}"
+  names="${output#*|}"
+  if [[ "$count" != "1" ]]; then
+    echo "FAIL: expected exactly one TagLauncher Dock tile, got $count ($names)" >&2
+    return 1
+  fi
+  log "PASS Dock tile count: $names"
+}
+
+assert_frontmost_taglauncher() {
+  local frontmost
+  frontmost="$(osascript -e 'tell application "System Events" to get name of first application process whose frontmost is true')"
+  if [[ "$frontmost" != "TagLauncher" ]]; then
+    echo "FAIL: frontmost app is $frontmost, expected TagLauncher" >&2
+    return 1
+  fi
+}
+
 prepare_isolated_app_instance() {
   if launchctl print "$USER_GUI_DOMAIN/$LAUNCH_AGENT_LABEL" >/dev/null 2>&1; then
     RESTORE_LAUNCH_AGENT=true
@@ -125,22 +294,29 @@
   fi
 
   kill_all_taglauncher_instances
+  rm -rf "$SAVED_STATE_DIR"
   open -n "$APP_BUNDLE"
-  sleep 2.5
+  sleep 1.0
+  dismiss_reopen_dialog
+  sleep 1.5
 
   if ! is_qa_app_only_running; then
     echo "FAIL: expected only QA build TagLauncher instance to be running" >&2
     pgrep -fl '/TagLauncher.app/Contents/MacOS/TagLauncher' >&2 || true
     exit 1
   fi
+  assert_single_qa_app_instance
 }
 
 assert_swift="$(mktemp -t taglauncher-window-assert.XXXXXX.swift)"
 coords_swift="$(mktemp -t taglauncher-window-coords.XXXXXX.swift)"
+settings_ax_swift="$(mktemp -t taglauncher-settings-ax.XXXXXX.swift)"
 screens_swift="$(mktemp -t taglauncher-screens.XXXXXX.swift)"
-trap 'rm -f "$assert_swift" "$coords_swift" "$screens_swift"; cleanup' EXIT
+fullscreen_swift="$(mktemp -t taglauncher-fullscreen-target.XXXXXX.swift)"
+trap 'cleanup; rm -f "$assert_swift" "$coords_swift" "$settings_ax_swift" "$screens_swift" "$fullscreen_swift" "$LAUNCH_AGENT_BACKUP"' EXIT
 
 cat >"$assert_swift" <<'SWIFT'
+import AppKit
 import AppKit
 import CoreGraphics
 import Foundation
@@ -183,8 +359,59 @@
     exit(1)
 }
 
+func dimension(_ bounds: NSDictionary, _ key: String) -> CGFloat {
+    if let value = bounds[key] as? CGFloat {
+        return value
+    }
+    if let value = bounds[key] as? NSNumber {
+        return CGFloat(truncating: value)
+    }
+    return 0
+}
+
+func isTinyUntitledUtilityWindow(_ window: WindowInfo) -> Bool {
+    window.name.isEmpty
+        && dimension(window.bounds, "Width") < 160
+        && dimension(window.bounds, "Height") < 160
+}
+
 func tagWindows(_ windows: [WindowInfo]) -> [WindowInfo] {
-    windows.filter { $0.owner == "TagLauncher" }
+    windows.filter {
+        $0.owner == "TagLauncher" && !isTinyUntitledUtilityWindow($0)
+    }
+}
+
+func rect(_ window: WindowInfo) -> CGRect {
+    CGRect(
+        x: dimension(window.bounds, "X"),
+        y: dimension(window.bounds, "Y"),
+        width: dimension(window.bounds, "Width"),
+        height: dimension(window.bounds, "Height")
+    )
+}
+
+func isOverlayWindow(_ window: WindowInfo) -> Bool {
+    guard window.name.isEmpty else { return false }
+    let windowFrame = rect(window)
+    return NSScreen.screens.contains { screen in
+        let screenFrame = screen.frame
+        return abs(windowFrame.width - screenFrame.width) <= 12
+            && windowFrame.height >= screenFrame.height * 0.75
+            && abs(windowFrame.midX - screenFrame.midX) <= 12
+    }
+}
+
+func isQuickSearchWindow(_ window: WindowInfo) -> Bool {
+    guard window.name.isEmpty, !isOverlayWindow(window) else { return false }
+    let windowFrame = rect(window)
+    return windowFrame.width >= 500
+        && windowFrame.width <= 900
+        && windowFrame.height >= 120
+        && windowFrame.height <= 850
+}
+
+func isSettingsLikeWindow(_ window: WindowInfo) -> Bool {
+    !window.name.isEmpty
 }
 
 func assertTagLayer(_ tag: [WindowInfo]) {
@@ -201,16 +428,32 @@
 case "overlay":
     guard tag.count == 1 else { fail("overlay expected 1 TagLauncher window, got \(tag.count)") }
     assertTagLayer(tag)
+    guard isOverlayWindow(tag[0]) else { fail("overlay window was not full-screen sized: \(tag[0].bounds)") }
     let menubarLayer = windows.first { $0.owner == "Window Server" && $0.name == "Menubar" }?.layer
     guard menubarLayer == 24 else { fail("menubar layer expected 24, got \(String(describing: menubarLayer))") }
     let dockWindows = windows.filter { $0.owner == "Dock" }
     guard dockWindows.isEmpty else { fail("Dock should be hidden while overlay is visible; found \(dockWindows.count) Dock windows") }
     print("PASS overlay: tagLayer=\(tag[0].layer) menubarLayer=24 dockWindows=0")
 
+case "quick-search":
+    guard tag.count == 2 else { fail("quick search expected overlay plus panel, got \(tag.count)") }
+    assertTagLayer(tag)
+    let overlays = tag.filter(isOverlayWindow)
+    let quickSearch = tag.filter(isQuickSearchWindow)
+    guard overlays.count == 1, quickSearch.count == 1 else {
+        fail("quick search stack wrong: names=\(tag.map(\.name)) bounds=\(tag.map(\.bounds))")
+    }
+    print("PASS quick search stack: tagLayers=\(tag.map(\.layer))")
+
 case "settings":
     guard tag.count == 2 else { fail("settings expected 2 TagLauncher windows, got \(tag.count)") }
     assertTagLayer(tag)
-    guard !tag[0].name.isEmpty, tag[1].name.isEmpty else {
+    let overlays = tag.filter(isOverlayWindow)
+    let settings = tag.filter(isSettingsLikeWindow)
+    guard overlays.count == 1, settings.count == 1 else {
+        fail("settings stack wrong: names=\(tag.map(\.name)) bounds=\(tag.map(\.bounds))")
+    }
+    guard !tag[0].name.isEmpty else {
         fail("settings order wrong: \(tag.map(\.name))")
     }
     print("PASS settings over overlay: order=\(tag.map(\.name))")
@@ -239,6 +482,158 @@
     }
     print("PASS force quit above overlay: forceQuitLayer=\(forceQuit.layer) overlayLayer=\(overlay.layer)")
 
+case "fullscreen-target":
+    guard let target = windows.first(where: { $0.name == "TagLauncherFullscreenQATargetFullscreen" }) else {
+        fail("fullscreen QA target window not found")
+    }
+    guard let targetWidth = target.bounds["Width"] as? CGFloat,
+          let targetHeight = target.bounds["Height"] as? CGFloat else {
+        fail("fullscreen QA target has invalid bounds")
+    }
+    let frames = NSScreen.screens.map(\.frame)
+    let matchesScreen = frames.contains { frame in
+        abs(targetWidth - frame.width) <= 8 && targetHeight >= frame.height * 0.90
+    }
+    guard matchesScreen else {
+        fail("fullscreen QA target is visible but not fullscreen: \(target.bounds)")
+    }
+    print("PASS fullscreen target: layer=\(target.layer) bounds=\(target.bounds)")
+
+case "fullscreen-overlay":
+    guard tag.count == 1 || tag.count == 2 else { fail("fullscreen overlay expected 1 or 2 TagLauncher windows, got \(tag.count)") }
+    assertTagLayer(tag)
+    guard let target = windows.first(where: { $0.name == "TagLauncherFullscreenQATargetFullscreen" }) else {
+        fail("fullscreen target disappeared; TagLauncher likely switched to another Space")
+    }
+    guard let overlay = tag.first(where: isOverlayWindow) else {
+        fail("fullscreen overlay TagLauncher window not found: \(tag.map(\.bounds))")
+    }
+    let quickSearch = tag.filter(isQuickSearchWindow)
+    guard quickSearch.count == tag.count - 1 else {
+        fail("fullscreen overlay stack has unexpected windows: \(tag.map(\.bounds))")
+    }
+    let overlayWidth = dimension(overlay.bounds, "Width")
+    let overlayHeight = dimension(overlay.bounds, "Height")
+    let overlayMidX = dimension(overlay.bounds, "X") + overlayWidth / 2
+    let targetWidth = dimension(target.bounds, "Width")
+    let targetHeight = dimension(target.bounds, "Height")
+    let targetMidX = dimension(target.bounds, "X") + targetWidth / 2
+    guard abs(overlayWidth - targetWidth) <= 12,
+          overlayHeight >= targetHeight * 0.88,
+          abs(overlayMidX - targetMidX) <= 12 else {
+        fail("fullscreen overlay is not on the target fullscreen display: overlay=\(overlay.bounds) target=\(target.bounds)")
+    }
+    guard tag.allSatisfy({ $0.layer > target.layer }) else {
+        fail("TagLauncher stack is not above fullscreen target")
+    }
+    print("PASS fullscreen overlay above target: tagLayers=\(tag.map(\.layer)) targetLayer=\(target.layer)")
+
+case "fullscreen-settings":
+    guard tag.count == 2 else { fail("fullscreen settings expected 2 TagLauncher windows, got \(tag.count)") }
+    assertTagLayer(tag)
+    guard let target = windows.first(where: { $0.name == "TagLauncherFullscreenQATargetFullscreen" }) else {
+        fail("fullscreen target disappeared after opening settings; TagLauncher likely switched to another Space")
+    }
+    let overlays = tag.filter(isOverlayWindow)
+    let settings = tag.filter(isSettingsLikeWindow)
+    guard overlays.count == 1, settings.count == 1 else {
+        fail("fullscreen settings stack wrong: names=\(tag.map(\.name)) bounds=\(tag.map(\.bounds))")
+    }
+    guard !tag[0].name.isEmpty else {
+        fail("fullscreen settings order wrong: \(tag.map(\.name))")
+    }
+    guard tag.allSatisfy({ $0.layer > target.layer }) else {
+        fail("TagLauncher settings stack is not above fullscreen target")
+    }
+    print("PASS fullscreen settings above target: tagLayers=\(tag.map(\.layer)) targetLayer=\(target.layer)")
+
+case "split-geometry":
+    func isSingleFullscreenWindow(_ windowFrame: CGRect, on screenFrame: CGRect) -> Bool {
+        let widthMatches = abs(windowFrame.width - screenFrame.width) <= 12
+        let heightMatches = windowFrame.height >= screenFrame.height * 0.88
+        let horizontallyAligned = abs(windowFrame.midX - screenFrame.midX) <= 12
+        let verticallyAligned = abs(windowFrame.maxY - screenFrame.maxY) <= 32
+        return widthMatches && heightMatches && horizontallyAligned && verticallyAligned
+    }
+
+    func hasSplitViewFullscreenWindows(_ windows: [CGRect], on screenFrame: CGRect) -> Bool {
+        let clippedWindows = windows.map { $0.intersection(screenFrame) }
+        let tallWindows = clippedWindows
+            .filter { frame in
+                frame.height >= screenFrame.height * 0.86
+                    && frame.width >= screenFrame.width * 0.20
+                    && frame.width <= screenFrame.width * 0.86
+                    && abs(frame.maxY - screenFrame.maxY) <= 32
+            }
+            .sorted { $0.minX < $1.minX }
+
+        guard tallWindows.count >= 2 else { return false }
+
+        for startIndex in tallWindows.indices {
+            var union = tallWindows[startIndex]
+            var lastMaxX = union.maxX
+
+            for window in tallWindows.dropFirst(startIndex + 1) {
+                let gap = window.minX - lastMaxX
+                if gap < -32 || gap > 48 {
+                    break
+                }
+                union = union.union(window)
+                lastMaxX = max(lastMaxX, window.maxX)
+
+                let touchesLeft = abs(union.minX - screenFrame.minX) <= 32
+                let touchesRight = abs(union.maxX - screenFrame.maxX) <= 32
+                let coversWidth = union.width >= screenFrame.width * 0.92
+                let coversHeight = union.height >= screenFrame.height * 0.86
+                if touchesLeft && touchesRight && coversWidth && coversHeight {
+                    return true
+                }
+            }
+        }
+
+        return false
+    }
+
+    let screen = CGRect(x: 0, y: 0, width: 1710, height: 1112)
+    let single = CGRect(x: 0, y: 39, width: 1710, height: 1073)
+    let splitHalf = [
+        CGRect(x: 0, y: 39, width: 853, height: 1073),
+        CGRect(x: 857, y: 39, width: 853, height: 1073)
+    ]
+    let splitThird = [
+        CGRect(x: 0, y: 39, width: 568, height: 1073),
+        CGRect(x: 572, y: 39, width: 1138, height: 1073)
+    ]
+    let desktopTiledWithLargeGap = [
+        CGRect(x: 0, y: 90, width: 700, height: 900),
+        CGRect(x: 900, y: 90, width: 700, height: 900)
+    ]
+    let desktopSideBySideBelowDock = [
+        CGRect(x: 0, y: 39, width: 856, height: 983),
+        CGRect(x: 854, y: 39, width: 856, height: 983)
+    ]
+    let halfOnly = [CGRect(x: 0, y: 39, width: 853, height: 1073)]
+
+    guard isSingleFullscreenWindow(single, on: screen) else {
+        fail("split geometry expected single fullscreen window to match")
+    }
+    guard hasSplitViewFullscreenWindows(splitHalf, on: screen) else {
+        fail("split geometry expected 50/50 Split View to match")
+    }
+    guard hasSplitViewFullscreenWindows(splitThird, on: screen) else {
+        fail("split geometry expected 33/67 Split View to match")
+    }
+    guard !hasSplitViewFullscreenWindows(desktopTiledWithLargeGap, on: screen) else {
+        fail("split geometry should not match ordinary tiled desktop windows")
+    }
+    guard !hasSplitViewFullscreenWindows(desktopSideBySideBelowDock, on: screen) else {
+        fail("split geometry should not match side-by-side desktop windows below the Dock")
+    }
+    guard !hasSplitViewFullscreenWindows(halfOnly, on: screen) else {
+        fail("split geometry should not match a single half-width window")
+    }
+    print("PASS split fullscreen geometry detection")
+
 case "screen-count":
     print("INFO screens=\(NSScreen.screens.count) frames=\(NSScreen.screens.map { NSStringFromRect($0.frame) })")
 
@@ -248,12 +643,24 @@
 SWIFT
 
 cat >"$coords_swift" <<'SWIFT'
+import AppKit
 import CoreGraphics
 import Foundation
 
 let raw = CGWindowListCopyWindowInfo([.optionOnScreenOnly, .excludeDesktopElements], kCGNullWindowID) as? [[String: Any]] ?? []
 let tag = raw.filter { ($0[kCGWindowOwnerName as String] as? String) == "TagLauncher" }
 let mode = CommandLine.arguments.dropFirst().first ?? ""
+
+func dimension(_ bounds: NSDictionary, _ key: String) -> CGFloat {
+    if let value = bounds[key] as? CGFloat {
+        return value
+    }
+    if let value = bounds[key] as? NSNumber {
+        return CGFloat(truncating: value)
+    }
+    return 0
+}
+
 switch mode {
 case "data-tab":
     guard let settings = tag.first(where: { (($0[kCGWindowName as String] as? String) ?? "").isEmpty == false }),
@@ -263,7 +670,7 @@
         fputs("FAIL: could not find settings window bounds\n", stderr)
         exit(1)
     }
-    print("\(Int(round(x + 523))) \(Int(round(y + 50)))")
+    print("\(Int(round(x + 625))) \(Int(round(y + 50)))")
 case "export":
     guard let settings = tag.first(where: { (($0[kCGWindowName as String] as? String) ?? "").isEmpty == false }),
           let bounds = settings[kCGWindowBounds as String] as? NSDictionary,
@@ -274,16 +681,155 @@
     }
     print("\(Int(round(x + 375))) \(Int(round(y + 331)))")
 case "overlay-outside":
-    guard let overlay = tag.first(where: { (($0[kCGWindowName as String] as? String) ?? "").isEmpty }),
-          let overlayBounds = overlay[kCGWindowBounds as String] as? NSDictionary,
-          let overlayX = overlayBounds["X"] as? CGFloat,
-          let overlayY = overlayBounds["Y"] as? CGFloat else {
-        fputs("FAIL: could not find overlay window bounds\n", stderr)
+    guard let overlay = tag.max(by: { lhs, rhs in
+        let lhsBounds = lhs[kCGWindowBounds as String] as? NSDictionary ?? [:]
+        let rhsBounds = rhs[kCGWindowBounds as String] as? NSDictionary ?? [:]
+        let lhsArea = dimension(lhsBounds, "Width") * dimension(lhsBounds, "Height")
+        let rhsArea = dimension(rhsBounds, "Width") * dimension(rhsBounds, "Height")
+        return lhsArea < rhsArea
+    }), let overlayBounds = overlay[kCGWindowBounds as String] as? NSDictionary else {
+        let screen = NSScreen.screens.first?.frame ?? CGRect(x: 0, y: 0, width: 1200, height: 800)
+        print("\(Int(round(screen.minX + 120))) \(160)")
+        exit(0)
+    }
+    let overlayX = dimension(overlayBounds, "X")
+    let overlayY = dimension(overlayBounds, "Y")
+    print("\(Int(round(overlayX + 120))) \(Int(round(overlayY + 160)))")
+case "overlay-center":
+    guard let overlay = tag.max(by: { lhs, rhs in
+        let lhsBounds = lhs[kCGWindowBounds as String] as? NSDictionary ?? [:]
+        let rhsBounds = rhs[kCGWindowBounds as String] as? NSDictionary ?? [:]
+        let lhsArea = dimension(lhsBounds, "Width") * dimension(lhsBounds, "Height")
+        let rhsArea = dimension(rhsBounds, "Width") * dimension(rhsBounds, "Height")
+        return lhsArea < rhsArea
+    }), let overlayBounds = overlay[kCGWindowBounds as String] as? NSDictionary else {
+        let screen = NSScreen.screens.first?.frame ?? CGRect(x: 0, y: 0, width: 1200, height: 800)
+        print("\(Int(round(screen.midX))) \(Int(round(screen.midY)))")
+        exit(0)
+    }
+    let overlayX = dimension(overlayBounds, "X")
+    let overlayY = dimension(overlayBounds, "Y")
+    let overlayWidth = dimension(overlayBounds, "Width")
+    let overlayHeight = dimension(overlayBounds, "Height")
+    print("\(Int(round(overlayX + overlayWidth / 2))) \(Int(round(overlayY + overlayHeight / 2)))")
+case "fullscreen-target-center":
+    guard let target = raw.first(where: { ($0[kCGWindowName as String] as? String) == "TagLauncherFullscreenQATargetFullscreen" }),
+          let bounds = target[kCGWindowBounds as String] as? NSDictionary else {
+        fputs("FAIL: could not find fullscreen target bounds\n", stderr)
         exit(1)
     }
-    print("\(Int(round(overlayX + 120))) \(Int(round(overlayY + 160)))")
+    let x = dimension(bounds, "X")
+    let y = dimension(bounds, "Y")
+    let width = dimension(bounds, "Width")
+    let height = dimension(bounds, "Height")
+    print("\(Int(round(x + width / 2))) \(Int(round(y + height / 2)))")
 default:
     fputs("FAIL: unknown coords mode \(mode)\n", stderr)
+    exit(1)
+}
+SWIFT
+
+cat >"$settings_ax_swift" <<'SWIFT'
+import AppKit
+import ApplicationServices
+import Foundation
+
+let mode = CommandLine.arguments.dropFirst().first ?? ""
+let bundleID = "com.taglauncher.app"
+
+guard let app = NSRunningApplication.runningApplications(withBundleIdentifier: bundleID).first else {
+    fputs("FAIL: TagLauncher is not running\n", stderr)
+    exit(1)
+}
+
+let root = AXUIElementCreateApplication(app.processIdentifier)
+
+func copyAttribute(_ element: AXUIElement, _ attribute: CFString) -> CFTypeRef? {
+    var value: CFTypeRef?
+    let result = AXUIElementCopyAttributeValue(element, attribute, &value)
+    guard result == .success else { return nil }
+    return value
+}
+
+func stringAttribute(_ element: AXUIElement, _ attribute: CFString) -> String? {
+    copyAttribute(element, attribute) as? String
+}
+
+func titleCandidates(for element: AXUIElement) -> [String] {
+    [
+        stringAttribute(element, kAXTitleAttribute as CFString),
+        stringAttribute(element, kAXDescriptionAttribute as CFString),
+        stringAttribute(element, kAXValueAttribute as CFString),
+        stringAttribute(element, kAXHelpAttribute as CFString)
+    ].compactMap { $0 }.filter { !$0.isEmpty }
+}
+
+func children(of element: AXUIElement) -> [AXUIElement] {
+    if let values = copyAttribute(element, kAXChildrenAttribute as CFString) as? [AXUIElement] {
+        return values
+    }
+    return []
+}
+
+func matches(_ element: AXUIElement, candidates: [String]) -> Bool {
+    let role = stringAttribute(element, kAXRoleAttribute as CFString) ?? ""
+    let titles = titleCandidates(for: element)
+    guard !titles.isEmpty else { return false }
+    let interactiveRole = role == kAXButtonRole as String
+        || role == kAXRadioButtonRole as String
+        || role == kAXTabGroupRole as String
+        || role == kAXMenuItemRole as String
+    guard interactiveRole else { return false }
+    return titles.contains { title in
+        candidates.contains { candidate in
+            title == candidate || title.localizedCaseInsensitiveContains(candidate)
+        }
+    }
+}
+
+func findMatchingElement(
+    _ element: AXUIElement,
+    candidates: [String],
+    depth: Int,
+    visited: inout Set<CFHashCode>
+) -> AXUIElement? {
+    guard depth >= 0 else { return nil }
+    let hash = CFHash(element)
+    guard !visited.contains(hash) else { return nil }
+    visited.insert(hash)
+
+    if matches(element, candidates: candidates) {
+        return element
+    }
+
+    for child in children(of: element) {
+        if let match = findMatchingElement(child, candidates: candidates, depth: depth - 1, visited: &visited) {
+            return match
+        }
+    }
+    return nil
+}
+
+let candidates: [String]
+switch mode {
+case "data-tab":
+    candidates = ["Data"]
+case "export":
+    candidates = ["Export"]
+default:
+    fputs("FAIL: unknown settings action \(mode)\n", stderr)
+    exit(1)
+}
+
+var visited = Set<CFHashCode>()
+guard let element = findMatchingElement(root, candidates: candidates, depth: 12, visited: &visited) else {
+    fputs("FAIL: could not find settings control for \(mode)\n", stderr)
+    exit(1)
+}
+
+let result = AXUIElementPerformAction(element, kAXPressAction as CFString)
+guard result == .success else {
+    fputs("FAIL: could not press settings control for \(mode): \(result.rawValue)\n", stderr)
     exit(1)
 }
 SWIFT
@@ -299,6 +845,66 @@
     let clickY = cgY + frame.height / 2
     print("\(index)|\(Int(round(frame.midX)))|\(Int(round(clickY)))|\(Int(round(frame.origin.x)))|\(Int(round(cgY)))|\(Int(round(frame.width)))|\(Int(round(frame.height)))")
 }
+SWIFT
+
+cat >"$fullscreen_swift" <<'SWIFT'
+import AppKit
+import Foundation
+
+final class FullscreenQATargetDelegate: NSObject, NSApplicationDelegate {
+    private var window: NSWindow?
+
+    func applicationDidFinishLaunching(_ notification: Notification) {
+        NSApp.setActivationPolicy(.regular)
+        let screen = NSScreen.main ?? NSScreen.screens.first
+        let frame = screen?.visibleFrame ?? NSRect(x: 0, y: 0, width: 900, height: 600)
+        let initialFrame = NSRect(
+            x: frame.midX - 450,
+            y: frame.midY - 300,
+            width: 900,
+            height: 600
+        )
+        let window = NSWindow(
+            contentRect: initialFrame,
+            styleMask: [.titled, .closable, .resizable],
+            backing: .buffered,
+            defer: false
+        )
+        window.title = "TagLauncherFullscreenQATarget"
+        window.collectionBehavior = [.managed, .fullScreenPrimary]
+        let view = NSView(frame: initialFrame)
+        view.wantsLayer = true
+        view.layer?.backgroundColor = NSColor(calibratedRed: 0.08, green: 0.10, blue: 0.16, alpha: 1).cgColor
+        window.contentView = view
+        window.makeKeyAndOrderFront(nil)
+        self.window = window
+        NSApp.activate(ignoringOtherApps: true)
+        NotificationCenter.default.addObserver(
+            forName: NSWindow.didEnterFullScreenNotification,
+            object: window,
+            queue: .main
+        ) { _ in
+            window.title = "TagLauncherFullscreenQATargetFullscreen"
+        }
+        DispatchQueue.main.asyncAfter(deadline: .now() + 0.8) {
+            if !window.styleMask.contains(.fullScreen) {
+                window.toggleFullScreen(nil)
+            }
+        }
+        DispatchQueue.main.asyncAfter(deadline: .now() + 3.0) {
+            if !window.styleMask.contains(.fullScreen) {
+                NSApp.activate(ignoringOtherApps: true)
+                window.makeKeyAndOrderFront(nil)
+                window.toggleFullScreen(nil)
+            }
+        }
+    }
+}
+
+let app = NSApplication.shared
+let delegate = FullscreenQATargetDelegate()
+app.delegate = delegate
+app.run()
 SWIFT
 
 swift_assert() {
@@ -317,6 +923,18 @@
   done
   printf '%s\n' "$output" >&2
   return 1
+}
+
+assert_fullscreen_overlay_stable() {
+  local output=""
+  for _ in {1..20}; do
+    if ! output="$(swift "$assert_swift" fullscreen-overlay 2>&1)"; then
+      printf '%s\n' "$output" >&2
+      return 1
+    fi
+    sleep 0.1
+  done
+  printf '%s\n' "$output"
 }
 
 show_overlay() {
@@ -338,6 +956,14 @@
   click_xy "$x" "$y"
 }
 
+click_settings_control() {
+  local mode="$1"
+  if swift "$settings_ax_swift" "$mode" >/dev/null 2>&1; then
+    return 0
+  fi
+  click_relative_to_settings "$mode"
+}
+
 click_overlay_outside_quick_search() {
   local coords
   coords="$(swift "$coords_swift" overlay-outside)"
@@ -345,10 +971,138 @@
   click_xy "$x" "$y"
 }
 
+page_scroll_appgrid() {
+  local coords
+  coords="$(swift "$coords_swift" overlay-center)"
+  read -r x y <<<"$coords"
+  move_xy "$x" "$y"
+  sleep 0.15
+  swift - <<'SWIFT'
+import CoreGraphics
+if let event = CGEvent(
+    scrollWheelEvent2Source: nil,
+    units: .pixel,
+    wheelCount: 1,
+    wheel1: -900,
+    wheel2: 0,
+    wheel3: 0
+) {
+    event.post(tap: .cghidEventTap)
+}
+SWIFT
+  sleep 0.25
+}
+
+kill_fullscreen_qa_target() {
+  if [[ -n "${FULLSCREEN_QA_PID:-}" ]]; then
+    kill "$FULLSCREEN_QA_PID" >/dev/null 2>&1 || true
+    wait "$FULLSCREEN_QA_PID" >/dev/null 2>&1 || true
+    FULLSCREEN_QA_PID=""
+    sleep 1.0
+  fi
+}
+
+start_fullscreen_qa_target() {
+  kill_fullscreen_qa_target
+  local log_file
+  log_file="$(mktemp -t taglauncher-fullscreen-target.XXXXXX.log)"
+  swift "$fullscreen_swift" >"$log_file" 2>&1 &
+  FULLSCREEN_QA_PID=$!
+  local output=""
+  for _ in {1..36}; do
+    if output="$(swift "$assert_swift" fullscreen-target 2>&1)"; then
+      printf '%s\n' "$output"
+      rm -f "$log_file"
+      return 0
+    fi
+    sleep 0.5
+  done
+  printf '%s\n' "$output" >&2
+  cat "$log_file" >&2 || true
+  rm -f "$log_file"
+  return 1
+}
+
+move_pointer_to_fullscreen_target() {
+  local coords
+  coords="$(swift "$coords_swift" fullscreen-target-center)"
+  read -r x y <<<"$coords"
+  move_xy "$x" "$y"
+  sleep 0.2
+}
+
 log "==> Building app"
 bash "$ROOT_DIR/build.sh" >/dev/null
 
+log "==> Preparing QA defaults"
+defaults write "$DEFAULTS_DOMAIN" showDockIcon -bool true
+defaults write "$DEFAULTS_DOMAIN" appLanguage -string en
+reset_dock_for_qa
+
 log "==> Starting clean app instance"
+prepare_isolated_app_instance
+
+log "==> QA duplicate guard: showDockIcon=true and repeated self-launch keep one Dock app instance"
+plist_multiple="$(/usr/libexec/PlistBuddy -c 'Print :LSMultipleInstancesProhibited' "$APP_BUNDLE/Contents/Info.plist" 2>/dev/null || true)"
+[[ "$plist_multiple" == "true" ]] || { echo "FAIL: LSMultipleInstancesProhibited is not true in built Info.plist" >&2; exit 1; }
+rg -Fq 'isTagLauncherBundle' "$ROOT_DIR/Apptag/DataLayer.swift"
+rg -Fq 'guard !isTagLauncherBundle(bundleId)' "$ROOT_DIR/Apptag/DataLayer.swift"
+for _ in {1..5}; do
+  open -n "$APP_BUNDLE"
+  sleep 0.35
+done
+sleep 1.5
+assert_single_qa_app_instance
+assert_single_dock_tile
+for _ in {1..3}; do
+  "$APP_BUNDLE/Contents/MacOS/TagLauncher" --hide >/dev/null 2>&1 &
+  sleep 0.25
+done
+sleep 2.0
+assert_single_qa_app_instance
+assert_single_dock_tile
+kill_all_taglauncher_instances
+sleep 0.4
+swift_assert no-overlay
+
+log "==> QA split-view fullscreen geometry detection"
+swift_assert split-geometry
+
+run_fullscreen_space_case() {
+  local dock_value="$1"
+  log "==> QA fullscreen Space: overlay stays above the current fullscreen app (showDockIcon=$dock_value)"
+  defaults write "$DEFAULTS_DOMAIN" showDockIcon -bool "$dock_value"
+  prepare_isolated_app_instance
+  start_fullscreen_qa_target
+  move_pointer_to_fullscreen_target
+  send_main_hotkey
+  wait_swift_assert fullscreen-overlay
+  assert_fullscreen_overlay_stable
+  log "==> QA fullscreen Space: quick search from appgrid does not switch Space"
+  send_keycode 49
+  sleep 0.4
+  assert_fullscreen_overlay_stable
+  send_keycode 53
+  sleep 0.3
+  wait_swift_assert fullscreen-overlay
+  log "==> QA fullscreen Space: settings from appgrid does not switch Space"
+  send_cmd_comma
+  sleep 0.7
+  wait_swift_assert fullscreen-settings
+  close_settings_window
+  sleep 0.5
+  wait_swift_assert fullscreen-overlay
+  send_keycode 53
+  sleep 0.4
+  wait_swift_assert no-overlay
+  kill_fullscreen_qa_target
+}
+
+run_fullscreen_space_case true
+run_fullscreen_space_case false
+
+log "==> Restoring dock-visible QA app instance for remaining checks"
+defaults write "$DEFAULTS_DOMAIN" showDockIcon -bool true
 prepare_isolated_app_instance
 
 log "==> QA 1/7: overlay claims foreground, hides Dock, keeps menu bar visible"
@@ -365,16 +1119,17 @@
 swift_assert settings
 
 log "==> QA 2/7: import/export file panel floats above settings"
-click_relative_to_settings data-tab
+click_settings_control data-tab
 sleep 0.3
-click_relative_to_settings export
+click_settings_control export
 sleep 0.7
 swift_assert file-panel
 send_keycode 53
 sleep 0.3
 send_cmd_w
-sleep 0.5
+sleep 0.9
 swift_assert overlay
+assert_frontmost_taglauncher
 
 log "==> QA 4/7 and 5/7: appgrid-space quick search and double-Esc behavior"
 send_keycode 49
@@ -384,6 +1139,22 @@
 swift_assert overlay
 send_keycode 53
 sleep 0.4
+swift_assert no-overlay
+
+log "==> QA 4/7: appgrid scroll keeps Space and Esc keyboard routing"
+show_overlay
+for _ in {1..5}; do
+  page_scroll_appgrid
+  send_keycode 49
+  sleep 0.35
+  swift_assert quick-search
+  send_keycode 53
+  sleep 0.25
+  swift_assert overlay
+done
+page_scroll_appgrid
+send_keycode 53
+sleep 0.35
 swift_assert no-overlay
 
 log "==> QA 5/7: clicking outside quick search closes search, not appgrid"
@@ -437,8 +1208,9 @@
 SWIFT
   done < <(swift "$screens_swift")
 else
-  rg -Fq 'screenContainingCurrentPointer() ??' "$ROOT_DIR/Apptag/ApptagApp.swift"
-  rg -Fq 'NSMouseInRect(mousePoint, $0.frame, false)' "$ROOT_DIR/Apptag/ApptagApp.swift"
+  rg -Fq 'statusMenuScreenForNextOverlay = overlayController.screenContainingCurrentPointer()' "$ROOT_DIR/Apptag/ApptagApp.swift"
+  rg -Fq 'screenContainingCurrentPointer() ??' "$ROOT_DIR/Apptag/OverlayWindowController.swift"
+  rg -Fq 'NSMouseInRect(mousePoint, $0.frame, false)' "$ROOT_DIR/Apptag/OverlayWindowController.swift"
   log "PASS screen-following static path: single physical display here; code selects NSScreen under current pointer"
 fi
 

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