Stop tracking .next artifacts

When browser tab is hidden (sleep), tear down all relay socket connections
completely. This forces fresh socket creation and clean auth handshake on wake,
preventing stuck AuthStatus.PendingResponse states.

- Add documentVisibility store tracking document.visibilityState
- Call Pool.get().remove(url) for relay sockets during hidden teardown
- Integrate socket reset in syncUserData, syncSpaces, syncDMs
- Add explanatory comments for visibility guards and race conditions

Fixes: App stuck in "Authenticating" after Mac sleep/wake cycle
Tested with: wss://news.utxo.one/

.gitignore

@@ -28,6 +28,7 @@ node_modules/
 .pnpm-store/
 build/
 .svelte-kit/
+.next/
 
 # Rust/Tauri
 *target/

src/app/core/sync.ts

@@ -1,8 +1,9 @@
 import {page} from "$app/stores"
 import type {Unsubscriber} from "svelte/store"
-import {derived, get} from "svelte/store"
-import {last, call, ifLet, assoc, chunk, sleep, identity, WEEK, ago} from "@welshman/lib"
+import {get} from "svelte/store"
+import {last, call, ifLet, assoc, chunk, sleep, WEEK, ago} from "@welshman/lib"
 import {PollResponse} from "nostr-tools/kinds"
+import {merged} from "@welshman/store"
 import {
   getListTags,
   getRelayTagValues,
@@ -21,7 +22,7 @@ import {
   unionFilters,
   getTagValue,
 } from "@welshman/util"
-import type {Filter, TrustedEvent} from "@welshman/util"
+import type {Filter, List, PublishedList, TrustedEvent} from "@welshman/util"
 import {request, requestOne, Difference, DifferenceEvent} from "@welshman/net"
 import {
   pubkey,
@@ -74,6 +75,8 @@ const pullOneWithFallback = async (
   signal: AbortSignal,
   onEvent?: (event: TrustedEvent) => void,
 ) => {
+  if (signal.aborted) return
+
   const cachedEvents = repository.query([filter]).filter(isSignedEvent)
   const since = last(cachedEvents.slice(10))?.created_at || 0
 
@@ -86,6 +89,12 @@ const pullOneWithFallback = async (
   const shouldFallback =
     !hasNegentropy(url) ||
     (await new Promise(resolve => {
+      if (signal.aborted) {
+        resolve(false)
+        return
+      }
+
+      // If teardown wins while the diff is opening, skip the fallback path and let cleanup stay in control.
       const diff = new Difference({relay: url, filter, events: cachedEvents, signal})
 
       diff.on(DifferenceEvent.Error, () => {
@@ -111,9 +120,7 @@ export const pullWithFallback = async ({url, signal, filters, onEvent}: SyncOpts
 
   if (signal.aborted) return
 
-  for (const filter of filters) {
-    pullOneWithFallback(url, filter, signal, onEvent)
-  }
+  await Promise.all(filters.map(filter => pullOneWithFallback(url, filter, signal, onEvent)))
 }
 
 const listen = ({url, signal, filters, onEvent}: SyncOpts) => {
@@ -123,6 +130,8 @@ const listen = ({url, signal, filters, onEvent}: SyncOpts) => {
 }
 
 const pullAndListen = (options: SyncOpts) => {
+  if (options.signal.aborted) return
+
   pullWithFallback(options)
   listen(options)
 }
@@ -197,7 +206,7 @@ const syncUserRoomMembership = (url: string, h: string) => {
 const syncUserData = () => {
   const unsubscribersByKey = new Map<string, Unsubscriber>()
 
-  const unsubscribeGroupList = userGroupList.subscribe($userGroupList => {
+  const syncGroupList = ($userGroupList: List | undefined) => {
     if ($userGroupList) {
       const keys = new Set<string>()
 
@@ -226,26 +235,32 @@ const syncUserData = () => {
         }
       }
     }
-  })
+  }
 
-  const unsubscribeRelayList = userRelayList.subscribe($userRelayList => {
-    if ($userRelayList) {
-      loadBlossomServerList($userRelayList.event.pubkey)
-      loadBlockedRelayList($userRelayList.event.pubkey)
-      loadFollowList($userRelayList.event.pubkey)
-      loadGroupList($userRelayList.event.pubkey)
-      loadMuteList($userRelayList.event.pubkey)
-      loadProfile($userRelayList.event.pubkey)
-      loadSettings($userRelayList.event.pubkey)
-      loadFeedsForPubkey($userRelayList.event.pubkey)
-    }
-  })
+  const syncRelayList = ($userRelayList: PublishedList | undefined) => {
+    const pubkey = $userRelayList?.event?.pubkey
 
-  const unsubscribeFollows = userFollowList.subscribe(async $userFollowList => {
+    if (!pubkey) return
+
+    loadBlossomServerList(pubkey)
+    loadBlockedRelayList(pubkey)
+    loadFollowList(pubkey)
+    loadGroupList(pubkey)
+    loadMuteList(pubkey)
+    loadProfile(pubkey)
+    loadSettings(pubkey)
+    loadFeedsForPubkey(pubkey)
+  }
+
+  const syncFollowList = async (signal: AbortSignal) => {
     for (const pubkeys of chunk(10, get(bootstrapPubkeys))) {
+      if (signal.aborted) return
+
       // This isn't urgent, avoid clogging other stuff up
       await sleep(1000)
 
+      if (signal.aborted) return
+
       await Promise.all(
         pubkeys.flatMap(pk => [
           loadRelayList(pk),
@@ -256,9 +271,26 @@ const syncUserData = () => {
         ]),
       )
     }
+  }
+
+  let bootstrapFollowController = new AbortController()
+
+  const unsubscribeGroupList = merged([userGroupList]).subscribe(([$userGroupList]) => {
+    syncGroupList($userGroupList)
+  })
+
+  const unsubscribeRelayList = merged([userRelayList]).subscribe(([$userRelayList]) => {
+    syncRelayList($userRelayList)
+  })
+
+  const unsubscribeFollows = merged([userFollowList]).subscribe(() => {
+    bootstrapFollowController.abort()
+    bootstrapFollowController = new AbortController()
+    void syncFollowList(bootstrapFollowController.signal)
   })
 
   return () => {
+    bootstrapFollowController.abort()
     unsubscribersByKey.forEach(call)
     unsubscribeGroupList()
     unsubscribeRelayList()
@@ -321,7 +353,7 @@ const syncSpace = (url: string, rooms: string[]) => {
 }
 
 const syncSpaces = () => {
-  const store = derived([userGroupList, page], identity)
+  const store = merged([userGroupList, page])
   const unsubscribersByUrl = new Map<string, Unsubscriber>()
   const roomsByUrl = new Map<string, string>()
 
@@ -383,6 +415,7 @@ const syncDMs = () => {
   const unsubscribersByUrl = new Map<string, Unsubscriber>()
 
   let currentPubkey: string | undefined
+  let currentShouldUnwrap = false
 
   const unsubscribeAll = () => {
     for (const [url, unsubscribe] of unsubscribersByUrl.entries()) {
@@ -391,6 +424,34 @@ const syncDMs = () => {
     }
   }
 
+  const syncPubkey = ($pubkey: string | undefined, $shouldUnwrap: boolean) => {
+    if ($pubkey !== currentPubkey) {
+      unsubscribeAll()
+    }
+
+    if ($pubkey && $shouldUnwrap) {
+      loadRelayList($pubkey)
+        .then(() => loadMessagingRelayList($pubkey))
+        .then($l => {
+          if ($l && currentPubkey === $pubkey && currentShouldUnwrap === $shouldUnwrap) {
+            subscribeAll($pubkey, getRelayTagValues(getListTags($l)))
+          }
+        })
+    }
+
+    currentPubkey = $pubkey
+    currentShouldUnwrap = $shouldUnwrap
+  }
+
+  const syncList = ($userMessagingRelayList: List | undefined) => {
+    const $pubkey = pubkey.get()
+    const $shouldUnwrap = shouldUnwrap.get()
+
+    if ($pubkey && $shouldUnwrap) {
+      subscribeAll($pubkey, getRelayTagValues(getListTags($userMessagingRelayList)))
+    }
+  }
+
   const subscribeAll = (pubkey: string, urls: string[]) => {
     // Start syncing newly added relays
     for (const url of urls) {
@@ -408,33 +469,16 @@ const syncDMs = () => {
     }
   }
 
-  // When pubkey changes, re-sync
-  const unsubscribePubkey = derived([pubkey, shouldUnwrap], identity).subscribe(
-    ([$pubkey, $shouldUnwrap]) => {
-      if ($pubkey !== currentPubkey) {
-        unsubscribeAll()
-      }
-
-      // If we have a pubkey, refresh our user's relay list then sync our subscriptions
-      if ($pubkey && $shouldUnwrap) {
-        loadRelayList($pubkey)
-          .then(() => loadMessagingRelayList($pubkey))
-          .then($l => subscribeAll($pubkey, getRelayTagValues(getListTags($l))))
-      }
-
-      currentPubkey = $pubkey
-    },
-  )
+  const unsubscribePubkey = merged([pubkey, shouldUnwrap]).subscribe(([$pubkey, $shouldUnwrap]) => {
+    syncPubkey($pubkey, $shouldUnwrap)
+  })
 
   // When user messaging relays change, update synchronization
-  const unsubscribeList = userMessagingRelayList.subscribe($userMessagingRelayList => {
-    const $pubkey = pubkey.get()
-    const $shouldUnwrap = shouldUnwrap.get()
-
-    if ($pubkey && $shouldUnwrap) {
-      subscribeAll($pubkey, getRelayTagValues(getListTags($userMessagingRelayList)))
-    }
-  })
+  const unsubscribeList = merged([userMessagingRelayList]).subscribe(
+    ([$userMessagingRelayList]) => {
+      syncList($userMessagingRelayList)
+    },
+  )
 
   return () => {
     unsubscribeAll()