improve detail stream ux

web/src/components/overlay/detail/AnnotationOffsetSlider.tsx

@@ -137,42 +137,35 @@ export default function AnnotationOffsetSlider({ className }: Props) {
           <LuPlus className="size-4" />
         </Button>
       </div>
-      <div className="flex items-center justify-between">
-        <div
-          className={cn(
-            "flex items-center gap-2 text-xs text-muted-foreground",
-            isMobile && "landscape:flex-col landscape:items-start",
-          )}
-        >
-          <Trans ns="views/explore">
-            trackingDetails.annotationSettings.offset.millisecondsToOffset
-          </Trans>
-          <Popover>
-            <PopoverTrigger asChild>
-              <button
-                className="focus:outline-none"
-                aria-label={t("trackingDetails.annotationSettings.offset.tips")}
-              >
-                <LuInfo className="size-4" />
-              </button>
-            </PopoverTrigger>
-            <PopoverContent className="w-80 text-sm">
-              {t("trackingDetails.annotationSettings.offset.tips")}
-            </PopoverContent>
-          </Popover>
-        </div>
-        <div className="flex items-center gap-2">
-          <Button size="sm" variant="ghost" onClick={reset}>
-            {t("button.reset", { ns: "common" })}
+      <div className="flex items-start gap-1.5 text-xs text-muted-foreground">
+        <Trans ns="views/explore">
+          trackingDetails.annotationSettings.offset.millisecondsToOffset
+        </Trans>
+        <Popover>
+          <PopoverTrigger asChild>
+            <button
+              className="mt-px shrink-0 focus:outline-none"
+              aria-label={t("trackingDetails.annotationSettings.offset.tips")}
+            >
+              <LuInfo className="size-3.5" />
+            </button>
+          </PopoverTrigger>
+          <PopoverContent className="w-80 text-sm">
+            {t("trackingDetails.annotationSettings.offset.tips")}
+          </PopoverContent>
+        </Popover>
+      </div>
+      <div className="flex items-center justify-end gap-2">
+        <Button size="sm" variant="ghost" onClick={reset}>
+          {t("button.reset", { ns: "common" })}
+        </Button>
+        {isAdmin && (
+          <Button size="sm" onClick={save} disabled={isSaving}>
+            {isSaving
+              ? t("button.saving", { ns: "common" })
+              : t("button.save", { ns: "common" })}
           </Button>
-          {isAdmin && (
-            <Button size="sm" onClick={save} disabled={isSaving}>
-              {isSaving
-                ? t("button.saving", { ns: "common" })
-                : t("button.save", { ns: "common" })}
-            </Button>
-          )}
-        </div>
+        )}
       </div>
     </div>
   );

web/src/components/timeline/DetailStream.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useMemo, useRef, useState } from "react";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { TrackingDetailsSequence } from "@/types/timeline";
 import { getLifecycleItemDescription } from "@/utils/lifecycleUtil";
 import { useDetailStream } from "@/context/detail-stream-context";
@@ -33,6 +33,7 @@ import { MdAutoAwesome } from "react-icons/md";
 import { isPWA } from "@/utils/isPWA";
 import { isInIframe } from "@/utils/isIFrame";
 import { GenAISummaryDialog } from "../overlay/chip/GenAISummaryChip";
+import { Separator } from "../ui/separator";
 
 type DetailStreamProps = {
   reviewItems?: ReviewSegment[];
@@ -49,7 +50,8 @@ export default function DetailStream({
 }: DetailStreamProps) {
   const { data: config } = useSWR<FrigateConfig>("config");
   const { t } = useTranslation("views/events");
-  const { annotationOffset } = useDetailStream();
+  const { annotationOffset, selectedObjectIds, setSelectedObjectIds } =
+    useDetailStream();
   const scrollRef = useRef<HTMLDivElement>(null);
 
   const [activeReviewId, setActiveReviewId] = useState<string | undefined>(
@@ -67,9 +69,69 @@ export default function DetailStream({
     true,
   );
 
-  const onSeekCheckPlaying = (timestamp: number) => {
-    onSeek(timestamp, isPlaying);
-  };
+  // When the settings panel opens, pin to the nearest review with detections
+  // so the user can visually align the bounding box using the offset slider
+  const pinnedDetectTimestampRef = useRef<number | null>(null);
+  const wasControlsExpandedRef = useRef(false);
+  const selectedBeforeExpandRef = useRef<string[]>([]);
+
+  const onSeekCheckPlaying = useCallback(
+    (timestamp: number) => {
+      onSeek(timestamp, isPlaying);
+    },
+    [onSeek, isPlaying],
+  );
+
+  useEffect(() => {
+    if (controlsExpanded && !wasControlsExpandedRef.current) {
+      selectedBeforeExpandRef.current = selectedObjectIds;
+
+      const items = (reviewItems ?? []).filter(
+        (r) => r.data?.detections?.length > 0,
+      );
+      if (items.length > 0) {
+        // Pick the nearest review to current effective time
+        let nearest = items[0];
+        let minDiff = Math.abs(effectiveTime - nearest.start_time);
+        for (const r of items) {
+          const diff = Math.abs(effectiveTime - r.start_time);
+          if (diff < minDiff) {
+            nearest = r;
+            minDiff = diff;
+          }
+        }
+
+        const nearestId = `review-${nearest.id ?? nearest.start_time ?? Math.floor(nearest.start_time ?? 0)}`;
+        setActiveReviewId(nearestId);
+
+        const detectionId = nearest.data.detections[0];
+        setSelectedObjectIds([detectionId]);
+
+        // Use the detection's actual start timestamp (parsed from its ID)
+        // rather than review.start_time, which can be >10ms away from any
+        // lifecycle event and would fail the bounding-box TOLERANCE check.
+        const detectTimestamp = parseFloat(detectionId);
+        pinnedDetectTimestampRef.current = detectTimestamp;
+        const recordTime = detectTimestamp + annotationOffset / 1000;
+        onSeek(recordTime, false);
+      }
+    }
+    if (!controlsExpanded && wasControlsExpandedRef.current) {
+      pinnedDetectTimestampRef.current = null;
+      setSelectedObjectIds(selectedBeforeExpandRef.current);
+    }
+    wasControlsExpandedRef.current = controlsExpanded;
+    // Only trigger on expand/collapse transition
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [controlsExpanded]);
+
+  // Re-seek on annotation offset change while settings panel is open
+  useEffect(() => {
+    const pinned = pinnedDetectTimestampRef.current;
+    if (!controlsExpanded || pinned == null) return;
+    const recordTime = pinned + annotationOffset / 1000;
+    onSeek(recordTime, false);
+  }, [controlsExpanded, annotationOffset, onSeek]);
 
   // Ensure we initialize the active review when reviewItems first arrive.
   // This helps when the component mounts while the video is already
@@ -214,6 +276,12 @@ export default function DetailStream({
       />
 
       <div className="relative flex h-full flex-col">
+        {controlsExpanded && (
+          <div
+            className="absolute inset-0 z-20 cursor-pointer bg-black/50"
+            onClick={() => setControlsExpanded(false)}
+          />
+        )}
         <div
           ref={scrollRef}
           className="scrollbar-container flex-1 overflow-y-auto overflow-x-hidden pb-14"
@@ -267,8 +335,9 @@ export default function DetailStream({
             )}
           </button>
           {controlsExpanded && (
-            <div className="space-y-3 px-3 pb-3">
+            <div className="space-y-4 px-3 pb-5 pt-2">
               <AnnotationOffsetSlider />
+              <Separator />
               <div className="flex flex-col gap-1">
                 <div className="flex items-center justify-between">
                   <label className="text-sm font-medium">