[Chat] Handle new chat notification reasons (#10530)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/Navigation.tsx

@@ -22,8 +22,9 @@ import {useAccountSwitcher} from '#/lib/hooks/useAccountSwitcher'
 import {useColorSchemeStyle} from '#/lib/hooks/useColorSchemeStyle'
 import {useNonReactiveCallback} from '#/lib/hooks/useNonReactiveCallback'
 import {
+  type ChatNotificationPayload,
   getNotificationPayload,
-  type NotificationPayload,
+  isChatNotificationPayload,
   notificationToURL,
   storePayloadForAccountSwitch,
 } from '#/lib/hooks/useNotificationHandler'
@@ -926,14 +927,14 @@ function RoutesContainer({children}: React.PropsWithChildren<{}>) {
   const linkingUrl = Linking.useLinkingURL()
 
   /**
-   * Handle navigation to a conversation, or prepares for account switch.
+   * Handle navigation to the messages tab, or prepares for account switch.
    *
    * Non-reactive because we need the latest data from some hooks
    * after an async call - sfn
    */
-  const handleChatMessage = useNonReactiveCallback(
-    (payload: Extract<NotificationPayload, {reason: 'chat-message'}>) => {
-      notyLogger.debug(`handleChatMessage`, {payload})
+  const handleChatNotification = useNonReactiveCallback(
+    (payload: ChatNotificationPayload) => {
+      notyLogger.debug(`handleChatNotification`, {payload})
 
       if (payload.recipientDid !== currentAccount?.did) {
         // handled in useNotificationHandler after account switch finishes
@@ -946,7 +947,13 @@ function RoutesContainer({children}: React.PropsWithChildren<{}>) {
         } else {
           setShowLoggedOut(true)
         }
-      } else {
+      } else if (
+        payload.reason === 'chat-message' ||
+        payload.reason === 'chat-reaction' ||
+        payload.reason === 'chat-added-to-group'
+      ) {
+        // chat-added-to-group routes to the convo because the recipient was
+        // just added and now has access.
         // @ts-expect-error nested navigators aren't typed -sfn
         navigate('MessagesTab', {
           screen: 'Messages',
@@ -954,6 +961,11 @@ function RoutesContainer({children}: React.PropsWithChildren<{}>) {
             pushToConversation: payload.convoId,
           },
         })
+      } else {
+        // chat-removed-from-group, chat-join-request-rejected: the convo is
+        // no longer accessible to the recipient, so just open the list.
+        // @ts-expect-error nested navigators aren't typed -sfn
+        navigate('MessagesTab', {screen: 'Messages'})
       }
     },
   )
@@ -989,8 +1001,8 @@ function RoutesContainer({children}: React.PropsWithChildren<{}>) {
           causedBoot: true,
         })
 
-        if (payload.reason === 'chat-message') {
-          handleChatMessage(payload)
+        if (isChatNotificationPayload(payload)) {
+          handleChatNotification(payload)
         } else {
           const path = notificationToURL(payload)