feat: 首页 Go SSR 与 React hydrate 同构，消壳层与帖行闪动

补齐侧栏/右栏图标与徽章、鉴权种子、StaticFeedList，并修正嵌套 a 与标题徽章对齐。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/scripts/extract-lucide-paths.mjs

@@ -0,0 +1,60 @@
+import fs from 'fs';
+import path from 'path';
+
+const iconsDir = path.join('node_modules/lucide-react/dist/esm/icons');
+const names = [
+  'search', 'house', 'star', 'folder-git-2', 'link-2', 'earth', 'file-text',
+  'message-circle', 'tags', 'moon', 'clock', 'badge-check', 'sliders-horizontal',
+  'plus', 'sun', 'mail', 'calendar-check', 'check', 'gift', 'panel-right',
+  'user-plus', 'layout-dashboard',
+  'code-2', 'coffee', 'help-circle', 'message-square', 'lightbulb', 'book-open',
+  'gamepad-2', 'palette', 'music', 'camera', 'heart', 'zap', 'globe', 'users',
+  'briefcase', 'graduation-cap', 'shopping-bag', 'map-pin', 'megaphone', 'flame',
+  'folder', 'wrench', 'cpu',
+];
+
+function esc(v) {
+  return String(v).replace(/\\/g, '\\\\').replace(/"/g, '\\"');
+}
+
+function nodeToInner(nodes) {
+  return nodes.map(([tag, attrs]) => {
+    let s = `<${tag}`;
+    for (const [k, v] of Object.entries(attrs)) {
+      if (k === 'key') continue;
+      s += ` ${k}="${esc(v)}"`;
+    }
+    return `${s}/>`;
+  }).join('');
+}
+
+function resolveIconFile(name) {
+  let f = path.join(iconsDir, `${name}.mjs`);
+  let src = fs.readFileSync(f, 'utf8');
+  const re = src.match(/export \{ default \} from '\.\/([^']+)';/);
+  if (re) {
+    f = path.join(iconsDir, re[1]);
+    src = fs.readFileSync(f, 'utf8');
+  }
+  return { f, src };
+}
+
+const out = {};
+for (const n of names) {
+  try {
+    const { src } = resolveIconFile(n);
+    const m = src.match(/const __iconNode = (\[[\s\S]*?\]);/);
+    if (!m) {
+      console.error('no node', n);
+      continue;
+    }
+    // eslint-disable-next-line no-eval
+    const nodes = eval(m[1]);
+    out[n] = nodeToInner(nodes);
+  } catch (e) {
+    console.error('fail', n, e.message);
+  }
+}
+
+fs.writeFileSync('tmp-lucide-paths.json', JSON.stringify(out, null, 2));
+console.log('wrote', Object.keys(out).length, 'icons');

frontend/scripts/gen-ssr-icons.mjs

@@ -0,0 +1,168 @@
+import fs from 'fs';
+import path from 'path';
+
+const paths = JSON.parse(fs.readFileSync('tmp-lucide-paths.json', 'utf8'));
+
+function splitInner(inner) {
+  const tags = [];
+  const re = /<([a-z]+)([^>]*)\/>/g;
+  let m;
+  while ((m = re.exec(inner))) {
+    tags.push(`<${m[1]}${m[2]}/>`);
+  }
+  return tags;
+}
+
+function goFunc(name, size, key, className = '') {
+  const tags = splitInner(paths[key]);
+  const lines = tags.map((t) => `\t\t\`${t}\`,`).join('\n');
+  if (className) {
+    return `func ${name}() string {\n\treturn ssrSVGWithClass(${size}, "${className}",\n${lines}\n\t)\n}\n\n`;
+  }
+  return `func ${name}() string {\n\treturn ssrSVG(${size},\n${lines}\n\t)\n}\n\n`;
+}
+
+const boardKeys = [
+  'code-2', 'coffee', 'help-circle', 'message-square', 'lightbulb', 'book-open',
+  'gamepad-2', 'palette', 'music', 'camera', 'heart', 'zap', 'globe', 'users',
+  'briefcase', 'graduation-cap', 'shopping-bag', 'map-pin', 'megaphone', 'flame',
+  'star', 'folder', 'wrench', 'cpu',
+];
+const defaults = [
+  'code-2', 'coffee', 'help-circle', 'message-square',
+  'lightbulb', 'book-open', 'gamepad-2', 'palette',
+];
+
+let out = `package handler
+
+import (
+\t"strconv"
+\t"strings"
+\t"time"
+)
+
+// 内联 SVG：path 对齐 lucide-react@1.18（由 scripts/extract-lucide-paths.mjs 抽取）
+
+func ssrSVG(size int, paths ...string) string {
+\treturn ssrSVGWithClass(size, "", paths...)
+}
+
+func ssrSVGWithClass(size int, className string, paths ...string) string {
+\tvar b strings.Builder
+\tb.WriteString(\`<svg xmlns="http://www.w3.org/2000/svg" width="\`)
+\tb.WriteString(strconv.Itoa(size))
+\tb.WriteString(\`" height="\`)
+\tb.WriteString(strconv.Itoa(size))
+\tb.WriteString(\`" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"\`)
+\tif className != "" {
+\t\tb.WriteString(\` class="\`)
+\t\tb.WriteString(className)
+\t\tb.WriteString(\`"\`)
+\t}
+\tb.WriteString(\` aria-hidden="true">\`)
+\tfor _, p := range paths {
+\t\tb.WriteString(p)
+\t}
+\tb.WriteString(\`</svg>\`)
+\treturn b.String()
+}
+
+`;
+
+out += goFunc('ssrIconSearch', 16, 'search', 'header-search-icon');
+out += goFunc('ssrIconSliders', 15, 'sliders-horizontal');
+out += goFunc('ssrIconPlus', 16, 'plus');
+out += goFunc('ssrIconMoon', 18, 'moon');
+out += goFunc('ssrIconSun', 18, 'sun');
+out += goFunc('ssrIconMail', 18, 'mail');
+out += goFunc('ssrIconHome', 18, 'house');
+out += goFunc('ssrIconStar', 18, 'star');
+out += goFunc('ssrIconFolderGit', 18, 'folder-git-2');
+out += goFunc('ssrIconLink2', 18, 'link-2');
+out += goFunc('ssrIconEarth', 18, 'earth');
+out += goFunc('ssrIconFileText', 18, 'file-text');
+out += goFunc('ssrIconLayoutDashboard', 18, 'layout-dashboard');
+out += goFunc('ssrIconMessageCircle', 16, 'message-circle');
+out += goFunc('ssrIconClock', 16, 'clock');
+out += goFunc('ssrIconBadgeCheck', 16, 'badge-check');
+out += goFunc('ssrIconTags', 16, 'tags');
+out += goFunc('ssrIconUserPlus', 16, 'user-plus');
+out += goFunc('ssrIconCalendarCheck', 18, 'calendar-check');
+out += goFunc('ssrIconCheck', 18, 'check');
+out += goFunc('ssrIconGift', 15, 'gift');
+out += goFunc('ssrIconPanelRight', 18, 'panel-right');
+
+out += '// 板块图标 path（key 对齐 BOARD_ICON_OPTIONS / AllowedBoardIcons）\nvar ssrBoardIconInner = map[string]string{\n';
+for (const k of boardKeys) {
+  out += `\t"${k}": \`${paths[k]}\`,\n`;
+}
+out += '}\n\n';
+
+out += '// 与前端 DEFAULT_ICONS 顺序一致（按 themeIndex 回退）\nvar ssrBoardDefaultIcons = []string{\n';
+for (const k of defaults) {
+  out += `\t"${k}",\n`;
+}
+out += '}\n\n';
+
+out += `// ssrBoardIconSVG 输出板块 Lucide 图标；class 打在 svg 上（与 React BoardIconDisplay 一致）
+func ssrBoardIconSVG(icon string, themeIndex int, className string) string {
+\tkey := strings.TrimSpace(strings.ToLower(icon))
+\tinner, ok := ssrBoardIconInner[key]
+\tif !ok || inner == "" {
+\t\tif themeIndex < 0 {
+\t\t\tthemeIndex = 0
+\t\t}
+\t\tkey = ssrBoardDefaultIcons[themeIndex%len(ssrBoardDefaultIcons)]
+\t\tinner = ssrBoardIconInner[key]
+\t}
+\treturn ssrSVGWithClass(18, className, inner)
+}
+
+// formatSSRRelativeTime 与前端 formatTime 同规则
+func formatSSRRelativeTime(t time.Time) string {
+\tif t.IsZero() {
+\t\treturn ""
+\t}
+\tnow := time.Now()
+\tdiffSec := now.Sub(t).Seconds()
+\tif diffSec < 0 {
+\t\tdiffSec = 0
+\t}
+\tif diffSec < 60 {
+\t\treturn "刚刚"
+\t}
+\tif diffSec < 3600 {
+\t\treturn strconv.Itoa(int(diffSec/60)) + "分钟前"
+\t}
+\tif diffSec < 86400 {
+\t\treturn strconv.Itoa(int(diffSec/3600)) + "小时前"
+\t}
+\tdiffDay := int(diffSec / 86400)
+\tif diffDay < 30 {
+\t\treturn strconv.Itoa(diffDay) + "天前"
+\t}
+\tif t.Year() == now.Year() {
+\t\treturn strconv.Itoa(int(t.Month())) + "月" + strconv.Itoa(t.Day()) + "日"
+\t}
+\treturn strconv.Itoa(t.Year()) + "年" + strconv.Itoa(int(t.Month())) + "月" + strconv.Itoa(t.Day()) + "日"
+}
+
+// formatSSRShortDateTime 与前端 formatShortDateTime 同规则（MM-DD HH:mm）
+func formatSSRShortDateTime(t time.Time) string {
+\tif t.IsZero() {
+\t\treturn ""
+\t}
+\tlocal := t.Local()
+\tpad := func(n int) string {
+\t\tif n < 10 {
+\t\t\treturn "0" + strconv.Itoa(n)
+\t\t}
+\t\treturn strconv.Itoa(n)
+\t}
+\treturn pad(int(local.Month())) + "-" + pad(local.Day()) + " " + pad(local.Hour()) + ":" + pad(local.Minute())
+}
+`;
+
+const outPath = path.join('..', 'handler', 'ssr_icons.go');
+fs.writeFileSync(outPath, out);
+console.log('wrote', outPath, Object.keys(paths).length, 'icons');