feat: 品牌替换 + 启动优化 + AGENTS.md 模板定制

- 品牌替换：OpenCode/opencode → AirCoding/aircoding（16+ 文件）
- Logo ASCII art：修复 left/right 行数不匹配导致的启动崩溃
- 启动诊断：添加 OPENCODE_PRINT_TIMING 计时探针
- dev 模式默认 --pure 跳过外部插件加载
- AGENTS.md 模板：追加 AirCoding 多 Agent 专项段落
- architect prompt + plugin：强化 AGENTS.md 产出验证

packages/console/app/src/component/footer.tsx

@@ -0,0 +1,48 @@
+import { createAsync } from "@solidjs/router"
+import { createMemo } from "solid-js"
+import { github } from "~/lib/github"
+import { config } from "~/config"
+import { useLanguage } from "~/context/language"
+import { useI18n } from "~/context/i18n"
+
+export function Footer() {
+  const language = useLanguage()
+  const i18n = useI18n()
+  const community = createMemo(() => {
+    const locale = language.locale()
+    return locale === "zh" || locale === "zht"
+      ? ({ key: "footer.feishu", link: language.route("/feishu") } as const)
+      : ({ key: "footer.discord", link: language.route("/discord") } as const)
+  })
+  const githubData = createAsync(() => github())
+  const starCount = createMemo(() =>
+    githubData()?.stars
+      ? new Intl.NumberFormat(language.tag(language.locale()), {
+          notation: "compact",
+          compactDisplay: "short",
+        }).format(githubData()!.stars!)
+      : config.github.starsFormatted.compact,
+  )
+
+  return (
+    <footer data-component="footer">
+      <div data-slot="cell">
+        <a href={config.github.repoUrl} target="_blank">
+          {i18n.t("footer.github")} <span>[{starCount()}]</span>
+        </a>
+      </div>
+      <div data-slot="cell">
+        <a href={language.route("/docs")}>{i18n.t("footer.docs")}</a>
+      </div>
+      <div data-slot="cell">
+        <a href={language.route("/changelog")}>{i18n.t("footer.changelog")}</a>
+      </div>
+      <div data-slot="cell">
+        <a href={community().link}>{i18n.t(community().key)}</a>
+      </div>
+      <div data-slot="cell">
+        <a href={config.social.twitter}>{i18n.t("footer.x")}</a>
+      </div>
+    </footer>
+  )
+}