fix(tui): render all non-synthetic text parts of a user message (anomalyco#24009)

(cherry picked from commit bbf67d0)

Author: jlongster

packages/opencode/src/cli/cmd/tui/routes/session/index.tsx

@@ -1247,7 +1247,17 @@ function UserMessage(props: {
 }) {
   const ctx = use()
   const local = useLocal()
-  const text = createMemo(() => props.parts.flatMap((x) => (x.type === "text" && !x.synthetic ? [x] : []))[0])
+  const text = createMemo(() => {
+    const texts = props.parts
+      .map((x) => {
+        if (x.type === "text" && !x.synthetic) {
+          return x.text
+        }
+        return null
+      })
+      .filter(Boolean)
+    return texts.join("\n\n")
+  })
   const files = createMemo(() => props.parts.flatMap((x) => (x.type === "file" ? [x] : [])))
   const { theme } = useTheme()
   const [hover, setHover] = createSignal(false)
@@ -1282,7 +1292,7 @@ function UserMessage(props: {
             backgroundColor={hover() ? theme.backgroundElement : theme.backgroundPanel}
             flexShrink={0}
           >
-            <text fg={theme.text}>{text()?.text}</text>
+            <text fg={theme.text}>{text()}</text>
             <Show when={files().length}>
               <box flexDirection="row" paddingBottom={metadataVisible() ? 1 : 0} paddingTop={1} gap={1} flexWrap="wrap">
                 <For each={files()}>