refactor(tui): remove dead assistant renderer (#39945)

Co-authored-by: Kit Langton <kit.langton@gmail.com>

packages/tui/src/routes/session/index.tsx

@@ -1925,122 +1925,6 @@ function UserMessage(props: { message: SessionMessageUser }) {
   )
 }
 
-function AssistantMessage(props: { message: SessionMessageAssistant; last: boolean }) {
-  const ctx = use()
-  const local = useLocal()
-  const theme = useTheme("elevated")
-  const model = createMemo(
-    () =>
-      ctx
-        .models()
-        .find((model) => model.providerID === props.message.model.providerID && model.id === props.message.model.id)
-        ?.name ?? `${props.message.model.providerID}/${props.message.model.id}`,
-  )
-
-  const final = createMemo(() => {
-    return props.message.finish && !["tool-calls", "unknown"].includes(props.message.finish)
-  })
-
-  const duration = createMemo(() => {
-    if (!final()) return 0
-    if (!props.message.time.completed) return 0
-    return props.message.time.completed - props.message.time.created
-  })
-
-  const exploration = createMemo(() => {
-    const grouped = new Map<string, { first: boolean; parts: SessionMessageAssistantTool[]; active: boolean }>()
-    if (!ctx.groupExploration()) return grouped
-    const runs = props.message.content
-      .map((part) =>
-        part.type === "tool" &&
-        ["read", "glob", "grep"].includes(toolDisplay(part.name)) &&
-        part.state.status !== "streaming"
-          ? part
-          : undefined,
-      )
-      .reduce<SessionMessageAssistantTool[][]>(
-        (runs, part) => {
-          if (part) runs[runs.length - 1].push(part)
-          if (!part && runs[runs.length - 1].length) runs.push([])
-          return runs
-        },
-        [[]],
-      )
-      .filter((run) => run.length > 0)
-    for (const run of runs) {
-      const summary = {
-        parts: run,
-        active: false,
-      }
-      run.forEach((part, index) => grouped.set(part.id, { ...summary, first: index === 0 }))
-    }
-    return grouped
-  })
-
-  return (
-    <>
-      <For each={props.message.content}>
-        {(content, index) => (
-          <Switch>
-            <Match when={content.type === "text"}>
-              <TextPart
-                part={content as SessionMessageAssistantText}
-                last={index() === props.message.content.length - 1}
-              />
-            </Match>
-            <Match when={content.type === "reasoning"}>
-              <ReasoningPart
-                part={content as SessionMessageAssistantReasoning}
-                message={props.message}
-                last={index() === props.message.content.length - 1}
-              />
-            </Match>
-            <Match when={content.type === "tool"}>
-              <Show when={exploration().get((content as SessionMessageAssistantTool).id)?.first !== false}>
-                <Show
-                  when={exploration().get((content as SessionMessageAssistantTool).id)}
-                  fallback={<ToolPart part={content as SessionMessageAssistantTool} />}
-                >
-                  {(summary) => <ExplorationSummary {...summary()} />}
-                </Show>
-              </Show>
-            </Match>
-          </Switch>
-        )}
-      </For>
-      <Show when={props.message.error}>
-        <box
-          border={["left"]}
-          paddingTop={1}
-          paddingBottom={1}
-          paddingLeft={2}
-          backgroundColor={theme.background.default}
-          customBorderChars={SplitBorder.customBorderChars}
-          borderColor={theme.text.feedback.error.default}
-        >
-          <text fg={theme.text.subdued}>{errorMessage(props.message.error)}</text>
-        </box>
-      </Show>
-      <AssistantRetry retry={props.message.retry} />
-      <Switch>
-        <Match when={props.last || final() || props.message.error}>
-          <box paddingLeft={3}>
-            <text>
-              <span style={{ fg: props.message.error ? theme.text.subdued : local.agent.color(props.message.agent) }}>
-                {Locale.titlecase(props.message.agent)}
-              </span>
-              <span style={{ fg: theme.text.subdued }}> · {model()}</span>
-              <Show when={duration()}>
-                <span style={{ fg: theme.text.subdued }}> · {Locale.duration(duration())}</span>
-              </Show>
-            </text>
-          </box>
-        </Match>
-      </Switch>
-    </>
-  )
-}
-
 function AssistantRetry(props: { retry: SessionMessageAssistant["retry"] }) {
   const theme = useTheme()
   return (
@@ -2056,40 +1940,6 @@ function AssistantRetry(props: { retry: SessionMessageAssistant["retry"] }) {
   )
 }
 
-function ExplorationSummary(props: { parts: SessionMessageAssistantTool[]; active: boolean }) {
-  const theme = useTheme()
-  const pathFormatter = usePathFormatter()
-  const label = (part: SessionMessageAssistantTool) => {
-    const input = typeof part.state.input === "string" ? {} : part.state.input
-    const tool = toolDisplay(part.name)
-    if (tool === "read") return `Read ${pathFormatter.format(stringValue(input.path))}`
-    if (tool === "glob") return `Glob "${stringValue(input.pattern)}"`
-    return `Grep "${stringValue(input.pattern)}"`
-  }
-  return (
-    <box flexDirection="column">
-      <InlineToolRow
-        icon="✱"
-        color={theme.text.subdued}
-        complete={!props.active}
-        pending="Exploring"
-        spinner={props.active}
-      >
-        {props.active ? "Exploring" : "Explored"}
-      </InlineToolRow>
-      <For each={props.parts}>
-        {(part, index) => (
-          <box paddingLeft={5}>
-            <text fg={part.state.status === "error" ? theme.text.feedback.error.default : theme.text.subdued}>
-              {index() === props.parts.length - 1 ? "└" : "├"} {label(part)}
-            </text>
-          </box>
-        )}
-      </For>
-    </box>
-  )
-}
-
 const INLINE_TOOL_ICON_WIDTH = 2
 
 function ReasoningPart(props: {