fix: logo 右半部分从 CODING 改为 CODE

去掉难以正确渲染的 N 和 G 字母，右半部分简化为 CODE（4 字母），
与左半部分 AIR 组合为 AIR CODE。

packages/tui/src/feature-plugins/sidebar/context.tsx

@@ -0,0 +1,65 @@
+import type { AssistantMessage } from "@opencode-ai/sdk/v2"
+import type { TuiPlugin, TuiPluginApi } from "@opencode-ai/plugin/tui"
+import type { BuiltinTuiPlugin } from "../builtins"
+import { createMemo } from "solid-js"
+
+const id = "internal:sidebar-context"
+
+const money = new Intl.NumberFormat("en-US", {
+  style: "currency",
+  currency: "USD",
+})
+
+function View(props: { api: TuiPluginApi; session_id: string }) {
+  const theme = () => props.api.theme.current
+  const msg = createMemo(() => props.api.state.session.messages(props.session_id))
+  const session = createMemo(() => props.api.state.session.get(props.session_id))
+  const cost = createMemo(() => session()?.cost ?? 0)
+
+  const state = createMemo(() => {
+    const last = msg().findLast((item): item is AssistantMessage => item.role === "assistant" && item.tokens.output > 0)
+    if (!last) {
+      return {
+        tokens: 0,
+        percent: null,
+      }
+    }
+
+    const tokens =
+      last.tokens.input + last.tokens.output + last.tokens.reasoning + last.tokens.cache.read + last.tokens.cache.write
+    const model = props.api.state.provider.find((item) => item.id === last.providerID)?.models[last.modelID]
+    return {
+      tokens,
+      percent: model?.limit.context ? Math.round((tokens / model.limit.context) * 100) : null,
+    }
+  })
+
+  return (
+    <box>
+      <text fg={theme().text}>
+        <b>Context</b>
+      </text>
+      <text fg={theme().textMuted}>{state().tokens.toLocaleString()} tokens</text>
+      <text fg={theme().textMuted}>{state().percent ?? 0}% used</text>
+      <text fg={theme().textMuted}>{money.format(cost())} spent</text>
+    </box>
+  )
+}
+
+const tui: TuiPlugin = async (api) => {
+  api.slots.register({
+    order: 100,
+    slots: {
+      sidebar_content(_ctx, props) {
+        return <View api={api} session_id={props.session_id} />
+      },
+    },
+  })
+}
+
+const plugin: BuiltinTuiPlugin = {
+  id,
+  tui,
+}
+
+export default plugin