feat(auth): expand shared PAM support for custom policies

- Add support for DMS and System managed factor policies
- Add validated dedicated security-key PAM / U2F Key sources
- Restore U2F OR/AND flows

Related: #2874
Port 1.5

quickshell/Common/SettingsData.qml

@@ -898,6 +898,8 @@ Singleton {
     property string lockPamPath: ""
     property bool lockPamInlineFprint: false
     property bool lockPamInlineU2f: false
+    property bool lockPamExternallyManaged: false
+    property string lockU2fPamPath: ""
     property bool greeterPamExternallyManaged: false
     property string lockScreenInactiveColor: "#000000"
     property int lockScreenNotificationMode: 0

quickshell/Common/settings/Processes.qml

@@ -63,6 +63,7 @@ Singleton {
     readonly property string u2fKeysPath: homeDir ? homeDir + "/.config/Yubico/u2f_keys" : ""
     readonly property bool homeU2fKeysDetected: u2fKeysPath !== "" && u2fKeysWatcher.loaded && u2fKeysText.trim() !== ""
     readonly property bool lockU2fCustomConfigDetected: pamModuleEnabled(dankshellU2fPamText, "pam_u2f")
+    readonly property bool lockU2fCustomSourceDetected: (settingsRoot?.lockU2fPamPath || "") !== "" && customU2fPamWatcher.loaded
     readonly property bool greeterPamHasFprint: greeterPamStackHasModule("pam_fprintd")
     readonly property bool greeterPamHasU2f: greeterPamStackHasModule("pam_u2f")
 
@@ -176,7 +177,7 @@ Singleton {
     readonly property bool lockU2fReady: {
         if (forcedU2fAvailable !== null)
             return forcedU2fAvailable;
-        return lockU2fCustomConfigDetected || homeU2fKeysDetected;
+        return lockU2fCustomSourceDetected || lockU2fCustomConfigDetected || homeU2fKeysDetected;
     }
 
     readonly property bool lockU2fCanEnable: {
@@ -727,6 +728,12 @@ Singleton {
         onLoadFailed: root.dankshellU2fPamText = ""
     }
 
+    FileView {
+        id: customU2fPamWatcher
+        path: root.settingsRoot?.lockU2fPamPath || ""
+        printErrors: false
+    }
+
     FileView {
         id: u2fKeysWatcher
         path: root.u2fKeysPath

quickshell/Common/settings/SettingsSpec.js

@@ -459,6 +459,8 @@ var SPEC = {
     lockPamPath: { def: "" },
     lockPamInlineFprint: { def: false },
     lockPamInlineU2f: { def: false },
+    lockPamExternallyManaged: { def: false },
+    lockU2fPamPath: { def: "" },
     lockScreenInactiveColor: { def: "#000000" },
     lockScreenNotificationMode: { def: 0 },
     lockScreenVideoEnabled: { def: false },