console: GitHub 风格（Primer）

保持一页式控制台排版与全部功能、API 不变，只换视觉：
深色顶栏 #24292f、Primer 浅色配色（边框 #d0d7de、链接蓝
#0969da、绿主按钮 #2da44e）、6px 圆角方框、系统字体与
等宽 ID/trace；任务列表改 issues 式（状态圆点 + 标题 +
灰色元信息）；对话改评论时间线（白框 + 头部 + 正文，
竖线连接），灰/蓝气泡已移除；自动选项目与继续消息历史
不受影响。console 标记单测本地 53 项通过。

cloud/console-react/src/App.tsx

@@ -19,17 +19,13 @@ import SkillsToolsPanel from "./sections/SkillsToolsPanel";
 import AutomationsSection from "./sections/AutomationsSection";
 import TriageSection from "./sections/TriageSection";
 
-// Layout only: ONE scrollable console page, Muse web/desktop tokens
-// (white, hairlines, grey/blue bubbles) but console ordering — no
-// icon-rail column, no left list column, no right panel column, no
-// view switching. Everything is on the page: a slim sticky top bar
-// (name + real connection status + health + quota + refresh stamp +
-// anchor nav), a data-cards row, then every module as a section in
-// order. The old right panel's content moved here: its profile/status
-// line is the top bar, its 今天 list is redundant with the full task
-// list section, and its detail/context panels sit under their own
-// sections below (detail under 对话, members under 项目, and so on).
-// The old icon rail's module switching is the anchor nav.
+// Layout only: ONE scrollable console page in GitHub Primer style —
+// a dark header bar (name + real connection status + health + quota
+// + refresh stamp + anchor nav as header links), a data-cards row,
+// then every module as a bordered section in order. No icon-rail
+// column, no left list column, no right panel column, no view
+// switching. Detail/context panels sit under their own sections
+// below (detail under 对话, members under 项目, and so on).
 const NAV: Array<[string, string]> = [
   ["#sec-dispatch", "派发"], ["#sec-tasks", "任务"], ["#sec-conv", "对话"],
   ["#sec-projects", "项目"], ["#sec-env", "环境"], ["#sec-workers", "Workers"],