Clone camera settings (#23339)

* add clone dialog

* i18n

* tweaks

* add to camera management pane

* add e2e test

* optional disable portal prop

* radio and checkbox tweaks

* tweak i18n

* add select all/select none

* fixes

* reset form only on open transition

* unselect all targets for existing camera

* fix test

* reorder sections for save and collapse to single put for new camera

* change source and allow cloning to multiple cameras

* tweak language

* fix overflowing text in save all popover

* tweaks

* fix per label object masks

* use grid for source and target

* language tweak

web/public/locales/en/views/settings.json

@@ -544,6 +544,92 @@
       "normal": "Normal",
       "dedicatedLpr": "Dedicated LPR",
       "saveSuccess": "Updated camera type for {{cameraName}}. Restart Frigate to apply the changes."
+    },
+    "clone": {
+      "sectionTitle": "Clone settings",
+      "sectionDescription": "Copy configuration from one camera to another camera or a new one.",
+      "button": "Clone settings",
+      "title": "Clone camera settings",
+      "description": "Copy a camera's configuration to one or more other cameras or a new camera. Identity (name, friendly name, web UI URL, display order) is never copied.",
+      "source": {
+        "label": "Source camera",
+        "placeholder": "Select a source camera",
+        "required": "Select a source camera"
+      },
+      "target": {
+        "legend": "Target",
+        "newRadio": "New camera",
+        "newNameLabel": "Camera name",
+        "newNamePlaceholder": "e.g., back_door or Back Door",
+        "newNameRequired": "Camera name is required",
+        "newNameInvalid": "Invalid camera name",
+        "newNameCollision": "A camera with this name already exists",
+        "newStreamsForced": "Streams are always copied for a new camera.",
+        "existingCamerasRadio": "Existing cameras",
+        "allCameras": "All cameras",
+        "existingPlaceholder": "Select at least one camera",
+        "existingDisabled": "No other cameras to copy to"
+      },
+      "categories": {
+        "legend": "Settings to clone",
+        "description": "Choose which settings to copy from the source camera.",
+        "selectAll": "Select all",
+        "selectNone": "Select none",
+        "resetDefaults": "Reset to defaults",
+        "general": "General",
+        "spatial": "Spatial settings",
+        "streams": "Streams",
+        "spatialWarningTitle": "Resolution mismatch",
+        "spatialWarning": "Source camera {{srcCamera}} detect resolution ({{srcWidth}}×{{srcHeight}}) differs from: {{cameras}}. Polygons may not align on those cameras. These defaults are off; enable to copy as-is.",
+        "restartHint": "Restart required",
+        "items": {
+          "record": "Recording",
+          "snapshots": "Snapshots",
+          "review": "Review",
+          "motion": "Motion detection",
+          "objects": "Objects",
+          "audio": "Audio detection",
+          "audio_transcription": "Audio transcription",
+          "notifications": "Notifications",
+          "birdseye": "Birdseye",
+          "mqtt": "MQTT",
+          "timestamp_style": "Timestamp style",
+          "onvif": "ONVIF",
+          "lpr": "License plate recognition",
+          "face_recognition": "Face recognition",
+          "semantic_search": "Semantic search",
+          "genai": "Generative AI",
+          "type": "Camera type (normal / dedicated LPR)",
+          "profiles": "Profiles",
+          "detect": "Detect dimensions",
+          "zones": "Zones",
+          "motion_mask": "Motion masks",
+          "object_masks": "Object masks",
+          "ffmpeg_live": "Stream URLs and roles"
+        }
+      },
+      "footer": {
+        "changeCount_zero": "No changes selected",
+        "changeCount_one": "{{count}} change will be applied",
+        "changeCount_other": "{{count}} changes will be applied",
+        "restartNeeded": "Restart will be required for some changes.",
+        "liveOnly": "All changes will apply live without a restart.",
+        "submit": "Clone",
+        "submitting": "Cloning…"
+      },
+      "toast": {
+        "success": "Settings copied to {{cameraName}}",
+        "successWithRestart": "Settings copied to {{cameraName}}. Restart Frigate to apply all changes.",
+        "successMulti_one": "Settings copied to {{count}} camera",
+        "successMulti_other": "Settings copied to {{count}} cameras",
+        "successMultiWithRestart_one": "Settings copied to {{count}} camera. Restart Frigate to apply all changes.",
+        "successMultiWithRestart_other": "Settings copied to {{count}} cameras. Restart Frigate to apply all changes.",
+        "partialFailure": "{{successCount}} sections applied; '{{failedSection}}' failed: {{errorMessage}}",
+        "partialFailureMulti": "Copied to {{successCount}} camera(s); failed for {{failed}}: {{errorMessage}}",
+        "newCameraPartialFailure": "Camera {{cameraName}} was created but some settings failed to copy: {{errorMessage}}",
+        "sourceMissing": "Source camera no longer exists",
+        "submitError": "Failed to clone camera: {{errorMessage}}"
+      }
     }
   },
   "cameraReview": {