Address review feedback: drag edge cases and test clarity

- Add onMouseLeave handler to cancel drag when cursor leaves overlay
- Preserve autotracking zooming disable-on-failure during init
- Extract 20px drag threshold as MIN_DRAG_DISTANCE constant
- Add sync-with-source notes to replicated test helpers

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frigate/ptz/onvif.py

@@ -295,6 +295,13 @@ class OnvifController:
                         ):
                             del move_request["Speed"]["Zoom"]
                 except Exception as e:
+                    if (
+                        self.config.cameras[camera_name].onvif.autotracking.zooming
+                        == ZoomingModeEnum.relative
+                    ):
+                        self.config.cameras[
+                            camera_name
+                        ].onvif.autotracking.zooming = ZoomingModeEnum.disabled
                     logger.warning(
                         f"Relative zoom not supported for {camera_name}: {e}"
                     )

frigate/test/test_ptz_commands.py

@@ -20,7 +20,12 @@ class OnvifCommandEnum(str, Enum):
 
 
 class TestMoveRelativeParsing(TestCase):
-    """Test the move_relative command parameter parsing logic."""
+    """Test the move_relative command parameter parsing logic.
+
+    NOTE: _parse_move_relative replicates logic from
+    OnvifController.handle_command_async (frigate/ptz/onvif.py).
+    If that parsing changes, this helper must be updated to match.
+    """
 
     def _parse_move_relative(self, param: str):
         """Replicate the parsing logic from OnvifController.handle_command_async."""
@@ -57,8 +62,10 @@ class TestMoveRelativeParsing(TestCase):
 class TestDispatcherPtzParsing(TestCase):
     """Test the dispatcher's _on_ptz_command parsing pipeline.
 
-    Replicates the logic from FrigateDispatcher._on_ptz_command to verify
-    that MQTT payloads are correctly decomposed into command + param.
+    Replicates the logic from FrigateDispatcher._on_ptz_command
+    (frigate/comms/dispatcher.py) to verify that MQTT payloads are
+    correctly decomposed into command + param.
+    If that parsing changes, this helper must be updated to match.
     """
 
     def _parse_ptz_payload(self, payload: str):

web/src/views/live/LiveCameraView.tsx

@@ -131,6 +131,9 @@ type LiveCameraViewProps = {
   toggleFullscreen: () => void;
 };
 
+/** Minimum drag distance (px) to distinguish a drag-to-zoom from a click-to-move. */
+const MIN_DRAG_DISTANCE = 20;
+
 function getClientPos(
   e: React.MouseEvent<HTMLDivElement> | React.TouchEvent<HTMLDivElement>,
 ): { x: number; y: number } | null {
@@ -293,8 +296,7 @@ export default function LiveCameraView({
       const dx = Math.abs(pos.x - dragStart.x);
       const dy = Math.abs(pos.y - dragStart.y);
 
-      // Minimum drag distance of 20px to distinguish from click
-      if (dx < 20 && dy < 20) {
+      if (dx < MIN_DRAG_DISTANCE && dy < MIN_DRAG_DISTANCE) {
         // Click (not drag) — move to point without zoom
         const normalizedX = (pos.x - rect.left) / rect.width;
         const normalizedY = (pos.y - rect.top) / rect.height;
@@ -352,7 +354,7 @@ export default function LiveCameraView({
     if (!isDragging || !clickOverlayRef.current) return null;
     const dx = Math.abs(dragCurrent.x - dragStart.x);
     const dy = Math.abs(dragCurrent.y - dragStart.y);
-    if (dx < 20 && dy < 20) return null; // Don't show rectangle for small movements
+    if (dx < MIN_DRAG_DISTANCE && dy < MIN_DRAG_DISTANCE) return null;
 
     const rect = clickOverlayRef.current.getBoundingClientRect();
     const x1 = Math.min(dragStart.x, dragCurrent.x) - rect.left;
@@ -762,6 +764,10 @@ export default function LiveCameraView({
                     onMouseDown={handleOverlayMouseDown}
                     onMouseMove={handleOverlayMouseMove}
                     onMouseUp={handleOverlayMouseUp}
+                    onMouseLeave={() => {
+                      setDragStart(null);
+                      setDragCurrent(null);
+                    }}
                     onTouchStart={handleOverlayMouseDown}
                     onTouchMove={handleOverlayMouseMove}
                     onTouchEnd={handleOverlayMouseUp}