fix(frontend,backend): all stories panel groups by peer again, missing trashed file answers 404, access log hides the token

frontend/src/lib/components/stories/AllStoriesArchive.svelte

@@ -32,10 +32,14 @@
 
   let groups = $state<Group[]>([]);
   let loading = $state(false);
-  const previews = $state<Record<number, string | null>>({});
+  const previews = $state<Record<string, string | null>>({});
   const expanded = $state<Record<number, boolean>>({});
   let token = 0;
 
+  function previewKey(story: StoryView): string {
+    return `${story.peer_id}:${story.story_id}`;
+  }
+
   let viewerOpen = $state(false);
   let viewerIndex = $state(0);
   let viewerItems = $state<StoryView[]>([]);
@@ -78,7 +82,7 @@
             kind: "peer" as const,
             name: peerName(peer) || `ID ${peerId}`,
             peerId,
-            stories,
+            stories: peerStories,
           };
         }
         const chat = chatById.get(peerId);
@@ -87,7 +91,7 @@
           kind: "chat" as const,
           name: chat?.title ?? `Chat ${peerId}`,
           peerId,
-          stories,
+          stories: peerStories,
         };
       });
     } finally {
@@ -106,7 +110,7 @@
       groups = [];
       loading = false;
       for (const key of Object.keys(previews)) {
-        delete previews[Number(key)];
+        delete previews[key];
       }
       for (const key of Object.keys(expanded)) {
         delete expanded[Number(key)];
@@ -122,13 +126,14 @@
     let active = true;
     untrack(() => {
       for (const item of list) {
-        if (!item.downloaded || previews[item.story_id] !== undefined) {
+        const key = previewKey(item);
+        if (!item.downloaded || previews[key] !== undefined) {
           continue;
         }
-        previews[item.story_id] = null;
+        previews[key] = null;
         loadStoryMedia(item.peer_id, item.story_id).then((url) => {
           if (active) {
-            previews[item.story_id] = url;
+            previews[key] = url;
           }
         });
       }
@@ -210,7 +215,7 @@
           {#each group.stories as item, index (item.story_id)}
             <StoryTile
               onopen={() => openViewer(group, index)}
-              preview={previews[item.story_id]}
+              preview={previews[previewKey(item)]}
               story={item}
             />
           {/each}