feat(ci): 官网 site-v* 构建+部署脚本(compile-site/deploy-site/lib-ssh/workflow)

- scripts/ci/compile-site.sh: node:20 容器内构建 web/website(Astro),
  SITE_URL 注入 canonical 域名 https://pangolin.yanmeiai.com。
- scripts/ci/lib-ssh.sh: 新增共享 setup_ssh/teardown_ssh(写临时私钥+
  known_hosts),供 site 与后续 server 部署复用;目标写死 IP 103.119.13.48
  (runner 无法解析用户本机 ~/.ssh/config 的 pangolin1 别名)。
- scripts/ci/deploy-site.sh: rsync dist/ 到 pangolin1
  /var/www/pangolin-site/,root 部署。
- .gitea/workflows/deploy-site.yml: site-v* tag + workflow_dispatch 触发,
  concurrency 组 deploy-site 防并发。
- .gitea/workflows/ci.yml: shellcheck 列表纳入三个新脚本。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013nMthbVEmQquxBRKb9Fj8u

scripts/ci/compile-site.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+# compile-site.sh — build the Astro 官网 (web/website) as a static site.
+# Output: web/website/dist/. Canonical domain is injected via SITE_URL (see
+# web/website/astro.config.mjs) — must match the deploy target host name so
+# canonical URLs / sitemap resolve correctly.
+#
+# Run inside a node:20 container by .gitea/workflows/deploy-site.yml; this
+# script itself just runs npm and assumes it is invoked from the repo root.
+set -euo pipefail
+
+SITE_URL="${SITE_URL:-https://pangolin.yanmeiai.com}"
+export SITE_URL
+echo "==> compile-site: SITE_URL=${SITE_URL}"
+
+cd web/website
+npm ci
+npm run build
+
+echo "==> compile-site: done — dist/ contents:"
+ls -lh dist/