Fix long-running subscriptions clogging things up

src/app/components/ContentLinkBlock.svelte

@@ -8,6 +8,8 @@
 
   const {value} = $props()
 
+  let hideImage = $state(false)
+
   const url = value.url.toString()
 
   const loadPreview = async () => {
@@ -20,6 +22,10 @@
     return json
   }
 
+  const onError = () => {
+    hideImage = true
+  }
+
   const expand = () => pushModal(ContentLinkDetail, {url}, {fullscreen: true})
 </script>
 
@@ -40,9 +46,10 @@
         </div>
       {:then preview}
         <div class="bg-alt flex max-w-xl flex-col leading-normal">
-          {#if preview.image}
+          {#if preview.image && !hideImage}
             <img
               alt="Link preview"
+              onerror={onError}
               src={imgproxy(preview.image)}
               class="bg-alt max-h-72 object-contain object-center" />
           {/if}

src/app/requests.ts

@@ -1,5 +1,5 @@
 import {get, writable} from "svelte/store"
-import {partition, int, YEAR, MONTH, insert, sortBy, assoc, now} from "@welshman/lib"
+import {partition, shuffle, int, YEAR, MONTH, insert, sortBy, assoc, now} from "@welshman/lib"
 import {
   MESSAGE,
   DELETE,
@@ -285,13 +285,17 @@ export const makeCalendarFeed = ({
 export const listenForNotifications = () => {
   const subs: Subscription[] = []
 
-  for (const [url, rooms] of userRoomsByUrl.get()) {
+  for (const [url, allRooms] of userRoomsByUrl.get()) {
+    // Limit how many rooms we load at a time, since we have to send a separate filter
+    // for each one due to nip 29 breaking postel's law
+    const rooms = shuffle(Array.from(allRooms)).slice(0, 30)
+
     load({
       relays: [url],
       filters: [
         {kinds: [THREAD], limit: 1},
         {kinds: [COMMENT], "#K": [String(THREAD)], limit: 1},
-        ...Array.from(rooms).map(room => ({kinds: [MESSAGE], "#h": [room], limit: 1})),
+        ...rooms.map(room => ({kinds: [MESSAGE], "#h": [room], limit: 1})),
       ],
     })
 
@@ -301,7 +305,7 @@ export const listenForNotifications = () => {
         filters: [
           {kinds: [THREAD], since: now()},
           {kinds: [COMMENT], "#K": [String(THREAD)], since: now()},
-          ...Array.from(rooms).map(room => ({kinds: [MESSAGE], "#h": [room], since: now()})),
+          ...rooms.map(room => ({kinds: [MESSAGE], "#h": [room], since: now()})),
         ],
       }),
     )