fix(app): don't use findLast

packages/app/src/components/session-context-usage.tsx

@@ -4,6 +4,7 @@ import { ProgressCircle } from "@opencode-ai/ui/progress-circle"
 import { Button } from "@opencode-ai/ui/button"
 import { useParams } from "@solidjs/router"
 import { AssistantMessage } from "@opencode-ai/sdk/v2/client"
+import { findLast } from "@opencode-ai/util/array"
 
 import { useLayout } from "@/context/layout"
 import { useSync } from "@/context/sync"
@@ -36,7 +37,7 @@ export function SessionContextUsage(props: SessionContextUsageProps) {
 
   const context = createMemo(() => {
     const locale = language.locale()
-    const last = messages().findLast((x) => {
+    const last = findLast(messages(), (x) => {
       if (x.role !== "assistant") return false
       const total = x.tokens.input + x.tokens.output + x.tokens.reasoning + x.tokens.cache.read + x.tokens.cache.write
       return total > 0

packages/app/src/components/session/session-context-tab.tsx

@@ -5,6 +5,7 @@ import { DateTime } from "luxon"
 import { useSync } from "@/context/sync"
 import { useLayout } from "@/context/layout"
 import { checksum } from "@opencode-ai/util/encode"
+import { findLast } from "@opencode-ai/util/array"
 import { Icon } from "@opencode-ai/ui/icon"
 import { Accordion } from "@opencode-ai/ui/accordion"
 import { StickyAccordionHeader } from "@opencode-ai/ui/sticky-accordion-header"
@@ -26,7 +27,7 @@ export function SessionContextTab(props: SessionContextTabProps) {
   const language = useLanguage()
 
   const ctx = createMemo(() => {
-    const last = props.messages().findLast((x) => {
+    const last = findLast(props.messages(), (x) => {
       if (x.role !== "assistant") return false
       const total = x.tokens.input + x.tokens.output + x.tokens.reasoning + x.tokens.cache.read + x.tokens.cache.write
       return total > 0
@@ -81,7 +82,7 @@ export function SessionContextTab(props: SessionContextTabProps) {
   })
 
   const systemPrompt = createMemo(() => {
-    const msg = props.visibleUserMessages().findLast((m) => !!m.system)
+    const msg = findLast(props.visibleUserMessages(), (m) => !!m.system)
     const system = msg?.system
     if (!system) return
     const trimmed = system.trim()

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)
       },
     },