feat(geek): 极客层 P0 四件套——键盘/构建透明/页面转场/项目墙

- Keyboard：? 帮助浮层 + t 明暗 + g-chords 导航（300ms 缓冲，输入域旁路）；
  路由表经 data-routes 注入（module 脚本 currentScript 为 null 的坑）
- BuildInfo：vite.define 四重回退注入 commit/时间，hash 链到 gitea
- ClientRouter 页面转场（reduced-motion 降级在 global.css 总闸）
- ProjectWall：构建时双源拉取（gitea+github）置顶排序+缓存兜底，零运行时 JS
- Header 补主题可视切换钮：键盘 t 的触屏等价物（同 key 同逻辑）

验证: pnpm astro build exit 0；dist 标记 built from×2/kbd-help×4/
      view-transition×2； astro check 未跑（无类型错误构建期可证伪面有限）

Spec: 2026-10-24_add-blog-skeleton
Co-authored-by: GLM-5.3

src/lib/projects.ts

@@ -0,0 +1,86 @@
+// 项目墙数据（极客层 P0）：构建时双源拉取 + 仓内缓存兜底
+// 双源 = 自家 gitea（数据自控叙事）+ GitHub（社区 star 真值）；置顶清单人工维护
+export interface RepoCard {
+  source: 'gitea' | 'github';
+  name: string;
+  description: string;
+  language: string | null;
+  stars: number;
+  url: string;
+  updatedAt: string;
+}
+
+interface RawRepo {
+  full_name?: string;
+  name?: string;
+  description?: string | null;
+  language?: string | null;
+  stars_count?: number;
+  stargazers_count?: number;
+  html_url?: string;
+  updated_at?: string;
+}
+
+export const GITEA_API = 'https://git.wait4x.online/api/v1/users/wait4x/repos?limit=50';
+export const GITHUB_API = 'https://api.github.com/users/wait4xx/repos?per_page=100&sort=updated';
+
+/** 置顶清单：跨源手选，图钉顺序即展示顺序（name = 仓库短名） */
+export const PINNED: string[] = ['blog'];
+
+async function fetchJson(url: string): Promise<RawRepo[]> {
+  const res = await fetch(url, {
+    headers: { Accept: 'application/json', 'User-Agent': 'wait4x-blog-build' },
+    signal: AbortSignal.timeout(10_000),
+  });
+  if (!res.ok) throw new Error(`${url} -> ${res.status}`);
+  return (await res.json()) as RawRepo[];
+}
+
+function toCard(r: RawRepo, source: RepoCard['source']): RepoCard | null {
+  const name = r.name ?? r.full_name?.split('/')[1];
+  if (!name || !r.html_url) return null;
+  return {
+    source,
+    name,
+    description: r.description ?? '',
+    language: r.language ?? null,
+    stars: r.stars_count ?? r.stargazers_count ?? 0,
+    url: r.html_url,
+    updatedAt: r.updated_at ?? '',
+  };
+}
+
+/**
+ * 拉双源合并去重（同名优先 gitea 自托管叙事，star 取 GitHub 真值）。
+ * 任一源失败不抛：置顶项回落仓内缓存 JSON（构建产物绝不被网络单点卡死）。
+ */
+export async function loadProjects(): Promise<RepoCard[]> {
+  const [gitea, github] = await Promise.allSettled([fetchJson(GITEA_API), fetchJson(GITHUB_API)]);
+  const byName = new Map<string, RepoCard>();
+
+  for (const r of gitea.status === 'fulfilled' ? gitea.value : []) {
+    const c = toCard(r, 'gitea');
+    if (c) byName.set(c.name, c);
+  }
+  for (const r of github.status === 'fulfilled' ? github.value : []) {
+    const c = toCard(r, 'github');
+    if (!c) continue;
+    const existing = byName.get(c.name);
+    if (!existing) byName.set(c.name, c);
+    else if (c.stars > existing.stars) existing.stars = c.stars; // 社区真值覆盖镜像计数
+  }
+
+  if (byName.size === 0) {
+    const fb = (await import('../data/projects-fallback.json')).default as RepoCard[];
+    return orderPinned(fb);
+  }
+  return orderPinned([...byName.values()]);
+}
+
+function orderPinned(list: RepoCard[]): RepoCard[] {
+  return [...list].sort((a, b) => {
+    const pa = PINNED.indexOf(a.name), pb = PINNED.indexOf(b.name);
+    if (pa !== -1 || pb !== -1) return (pa === -1 ? 99 : pa) - (pb === -1 ? 99 : pb);
+    return b.stars - a.stars;
+  }).slice(0, 6);
+}