Fix lock password field auto-focus

shell/plugins/lock/LockView.qml

@@ -64,12 +64,25 @@ Item {
   }
 
   onPasswordTextChanged: syncPasswordText()
-  onInputEnabledChanged: {
-    if (inputEnabled) Qt.callLater(forcePasswordFocus)
-  }
   Component.onCompleted: {
     syncPasswordText()
-    if (inputEnabled) Qt.callLater(forcePasswordFocus)
+  }
+
+  // The lock surface is created before Hyprland maps it and hands over
+  // keyboard focus, so a single forceActiveFocus() from Component.onCompleted
+  // lands while the window is still inactive and never re-applies once the
+  // surface activates. Focus is also dropped again on suspend/resume (the
+  // surface survives but the compositor keeps its keyboard focus), after the
+  // idle screensaver that dies up to a second after the lock request, and when
+  // a failed password re-enables the field. Ask again while the field should
+  // hold focus but does not; the running binding re-arms on every later focus
+  // loss. Idle while the display is blanked: there is no focus to win with the
+  // output down, and a lock can sit blanked all night.
+  Timer {
+    interval: 100
+    repeat: true
+    running: root.inputEnabled && !root.authenticatingPassword && !root.displaysBlank && !passwordInput.activeFocus
+    onTriggered: root.forcePasswordFocus()
   }
 
   // Measures the masked password at full size; passwordDotScale compares this

test/shell.d/lock-focus-retry-test.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+set -euo pipefail
+
+source "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)/base-test.sh"
+
+run_node_test <<'JS'
+const fs = require('fs')
+const lockView = fs.readFileSync(path.join(root, 'shell/plugins/lock/LockView.qml'), 'utf8')
+
+// A single forceActiveFocus() at Component.onCompleted races the compositor
+// handing the lock surface keyboard focus, and nothing re-applies it when the
+// surface loses focus later (suspend/resume, the idle screensaver dying, a
+// failed password re-enabling the field). The field must retry until it holds
+// focus, re-armed by the running binding on every focus loss, and idled while
+// the display is blanked so a surface that can never take focus (a monitor
+// hotplugged mid-lock) does not spin all night.
+assert(
+  /running:\s*root\.inputEnabled\s*&&\s*!root\.authenticatingPassword\s*&&\s*!root\.displaysBlank\s*&&\s*!passwordInput\.activeFocus/.test(lockView),
+  'the password field retries focus until it holds it, and idles while blanked'
+)
+
+assert(
+  /onTriggered:\s*root\.forcePasswordFocus\(\)/.test(lockView),
+  'the focus retry re-asserts focus on the password field'
+)
+
+// The single-shot grab cannot cover focus lost after completion; the retry
+// timer must replace it rather than sit beside it.
+assert(
+  !/if\s*\(inputEnabled\)\s*Qt\.callLater\(forcePasswordFocus\)/.test(lockView),
+  'the one-shot focus grab no longer replaces the retry timer'
+)
+JS