fix(app): don't use findLast

packages/app/src/pages/session.tsx

@@ -40,6 +40,7 @@ import { useTerminal, type LocalPTY } from "@/context/terminal"
 import { useLayout } from "@/context/layout"
 import { Terminal } from "@/components/terminal"
 import { checksum, base64Encode, base64Decode } from "@opencode-ai/util/encode"
+import { findLast } from "@opencode-ai/util/array"
 import { getFilename } from "@opencode-ai/util/path"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { DialogSelectFile } from "@/components/dialog-select-file"
@@ -748,7 +749,7 @@ export default function Page() {
         }
         const revert = info()?.revert?.messageID
         // Find the last user message that's not already reverted
-        const message = userMessages().findLast((x) => !revert || x.id < revert)
+        const message = findLast(userMessages(), (x) => !revert || x.id < revert)
         if (!message) return
         await sdk.client.session.revert({ sessionID, messageID: message.id })
         // Restore the prompt from the reverted message
@@ -758,7 +759,7 @@ export default function Page() {
           prompt.set(restored)
         }
         // Navigate to the message before the reverted one (which will be the new last visible message)
-        const priorMessage = userMessages().findLast((x) => x.id < message.id)
+        const priorMessage = findLast(userMessages(), (x) => x.id < message.id)
         setActiveMessage(priorMessage)
       },
     },
@@ -780,14 +781,14 @@ export default function Page() {
           await sdk.client.session.unrevert({ sessionID })
           prompt.reset()
           // Navigate to the last message (the one that was at the revert point)
-          const lastMsg = userMessages().findLast((x) => x.id >= revertMessageID)
+          const lastMsg = findLast(userMessages(), (x) => x.id >= revertMessageID)
           setActiveMessage(lastMsg)
           return
         }
         // Partial redo - move forward to next message
         await sdk.client.session.revert({ sessionID, messageID: nextMessage.id })
         // Navigate to the message before the new revert point
-        const priorMsg = userMessages().findLast((x) => x.id < nextMessage.id)
+        const priorMsg = findLast(userMessages(), (x) => x.id < nextMessage.id)
         setActiveMessage(priorMsg)
       },
     },