Clear the cached initial URL after handling a deep link

expo-linking caches the URL that launched the app and replays it to every
new `useLinkingURL`/`getLinkingURL` caller. That means an account switch
(which remounts the tree via `key={currentAccount?.did}`) or a runtime
reload - e.g. the 15-minute-minimize OTA reload - would hand us the same
link again and re-run the intent, re-opening a composer or a chat invite
dialog the user already dealt with.

`useIntentHandler` is the last consumer of the launch URL (the landing
entry check gates the splash, and the age assurance provider and
`RoutesContainer` both read it while rendering, before this effect runs),
so clear it there once the URL has been handled. `clearInitialURL` is a
no-op on web, and it only touches expo-linking's own cache - react
navigation's deep link routing reads react-native's `getInitialURL`, so
it is unaffected.

This also covers the case the TODO in `useOTAUpdates` was waiting on: by
the time the pull request deployment reloads, the URL that triggered the
`apply-ota` intent is already cleared, so drop the commented-out call.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BNf6FLwWwwYjoC7ZjbDnEb

src/lib/hooks/useIntentHandler.ts

@@ -109,7 +109,18 @@ export function useIntentHandler() {
       if (previousIntentUrl === incomingUrl) {
         return
       }
-      handleIncomingURL(incomingUrl)
+      handleIncomingURL(incomingUrl).finally(() => {
+        /*
+         * expo-linking caches the URL that launched the app and replays it to
+         * every new `useLinkingURL`/`getLinkingURL` caller, so an account
+         * switch (which remounts the tree, see `key={currentAccount?.did}` in
+         * `App.native.tsx`) or a runtime reload would hand us the same link
+         * again. Drop it now that it's been handled - this hook is the last
+         * consumer of the launch URL, everything else reads it while
+         * rendering, before this effect runs. No-op on web.
+         */
+        Linking.clearInitialURL()
+      })
       previousIntentUrl = incomingUrl
     }
   }, [

src/lib/hooks/useOTAUpdates.ts

@@ -177,12 +177,6 @@ export function useApplyPullRequestOTAUpdate() {
             updateId: fetchedUpdate.manifest.id,
           })
           try {
-            /*
-             * TODO: once expo-linking is upgraded to >= 57, enable this so the
-             * re-delivered initial URL doesn't trigger a redundant silent check
-             * after the reload.
-             */
-            // Linking.clearInitialURL()
             await reloadAsync({
               reloadScreenOptions: splash(t.scheme),
             })