diff --git a/MANIFEST.json b/MANIFEST.json
index 7ac6a50..7773788 100644
--- a/MANIFEST.json
+++ b/MANIFEST.json
@@ -4,13 +4,13 @@
   "summary": "技能目录站：把对外发布的技能发布成一个自托管目录站（动态服务从 catalog.json 现渲染，附同源静态快照；能干什么 / 先装什么 / 要配什么 / 依赖谁 / 一条安装命令）。",
   "tier": 1,
   "status": "stable",
-  "version": "356a0c0",
+  "version": "5979776",
   "source": {
     "path": "skills/skill-catalog",
-    "commit": "356a0c0",
-    "describe": "356a0c0",
+    "commit": "5979776",
+    "describe": "5979776",
     "dirty": false,
-    "packed_at": "2026-10-02T06:26:53.502Z"
+    "packed_at": "2026-10-02T06:28:52.768Z"
   },
   "platforms": [
     "darwin",
@@ -177,7 +177,7 @@
     {
       "path": "VERSION",
       "bytes": 6,
-      "sha256": "1f930dd1f133c1f9"
+      "sha256": "71015c979ccb0fc8"
     },
     {
       "path": "assets/app.js",
@@ -206,8 +206,8 @@
     },
     {
       "path": "scripts/render.mjs",
-      "bytes": 17548,
-      "sha256": "240971a1d11a90ab"
+      "bytes": 17690,
+      "sha256": "6bc3942aa699352c"
     },
     {
       "path": "scripts/serve.mjs",
@@ -221,8 +221,8 @@
     },
     {
       "path": "scripts/skill-catalog.mjs",
-      "bytes": 26089,
-      "sha256": "22a325d47bb32dda"
+      "bytes": 26192,
+      "sha256": "19c681002e68a1e4"
     }
   ],
   "leak_scan": {
diff --git a/README.md b/README.md
index c2467d5..19e08c9 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@
 ## 安装
 
 ```sh
-pi install git:gitea.vhkd.top/pi-hub/skill-catalog.git@v0.2.0
+pi install git:gitea.vhkd.top/pi-hub/skill-catalog.git@v0.2.1
 ```
 
 装完 `pi-skill list` 能看到 `skill-catalog`，`pi-skill skill-catalog check` 会告诉还缺什么。
diff --git a/package.json b/package.json
index 634ccf8..51e3461 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "skill-catalog",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "description": "技能目录站：把对外发布的技能发布成一个自托管目录站（动态服务从 catalog.json 现渲染，附同源静态快照；能干什么 / 先装什么 / 要配什么 / 依赖谁 / 一条安装命令）。",
   "license": "GPL-3.0-or-later",
   "keywords": [
diff --git a/skills/skill-catalog/VERSION b/skills/skill-catalog/VERSION
index 0ea3a94..0c62199 100644
--- a/skills/skill-catalog/VERSION
+++ b/skills/skill-catalog/VERSION
@@ -1 +1 @@
-0.2.0
+0.2.1
diff --git a/skills/skill-catalog/scripts/render.mjs b/skills/skill-catalog/scripts/render.mjs
index 217b437..101e50b 100644
--- a/skills/skill-catalog/scripts/render.mjs
+++ b/skills/skill-catalog/scripts/render.mjs
@@ -102,7 +102,11 @@ ${siteFoot(depth, generatedAt)}
 }
 
 function cardOf(entry) {
-  const platformLabel = entry.platforms.includes('all') ? '全平台' : entry.platforms.map(platformLabelOf).join('/');
+  const platformLabel = entry.platforms.includes('all')
+    ? '全平台'
+    : entry.platforms.length
+      ? entry.platforms.map(platformLabelOf).join('/')
+      : '未声明平台';
   const facts = [
     `<span class="platform-badge" title="支持平台">${escapeHtml(platformLabel)}</span>`,
     ...entry.requires.slice(0, 3).map(item => `<span class="meta-chip">${escapeHtml(item.name)}</span>`),
@@ -216,7 +220,7 @@ ${entry.usesPublic.length || entry.usedBy.length ? '' : '<li class="muted">独
     <span class="chip layer-${entry.layer}">${LAYER_LABEL[entry.layer]}</span>
     <span class="meta-chip">${LAYER_HINT[entry.layer]}</span>
     ${entry.status !== 'stable' ? `<span class="meta-chip meta-chip-warn">${entry.status === 'experimental' ? '实验性' : '将退役'}</span>` : ''}
-    ${entry.platforms.map(platform => `<span class="meta-chip">${escapeHtml(platform)}</span>`).join('')}
+    ${entry.platforms.map(platform => `<span class="meta-chip">${escapeHtml(platformLabelOf(platform))}</span>`).join('')}
   </div>
 </header>
 <div class="detail-grid">
@@ -306,18 +310,20 @@ export function renderIndexPage({ entries, siteUrl = '', fontsCss = null, genera
   <span class="count" id="count">${entries.length}</span>
 </div>
 ${
-    requires.length
+    requires.length || platforms.length > 1
       ? `<div class="chipbar" id="requires">
   ${
     platforms.length > 1
       ? `<span class="chip-label">平台</span>${platforms
           .map(value => `<button class="chip filter" data-platform="${escapeHtml(value)}" aria-pressed="false">${escapeHtml(platformLabelOf(value))}</button>`)
-          .join('')}
-        <span class="chip-sep"></span>`
+          .join('')}<span class="chip-sep"></span>`
+      : ''
+  }
+  ${
+    requires.length
+      ? `<span class="chip-label">按依赖筛选</span>${requires.map(name => `<button class="chip filter" data-requires="${escapeHtml(name)}" aria-pressed="false">${escapeHtml(name)}</button>`).join('')}`
       : ''
   }
-  <span class="chip-label">按依赖筛选</span>
-  ${requires.map(name => `<button class="chip filter" data-requires="${escapeHtml(name)}" aria-pressed="false">${escapeHtml(name)}</button>`).join('')}
   <button class="chip clear" id="clear-filters" type="button" hidden>清除筛选</button>
 </div>`
       : ''
diff --git a/skills/skill-catalog/scripts/skill-catalog.mjs b/skills/skill-catalog/scripts/skill-catalog.mjs
index 41176d7..44fedb6 100644
--- a/skills/skill-catalog/scripts/skill-catalog.mjs
+++ b/skills/skill-catalog/scripts/skill-catalog.mjs
@@ -136,7 +136,8 @@ export function collectCatalog(repo = repoRoot()) {
         useWhen: declared.useWhen ?? '',
         tier: declared.tier,
         version,
-        platforms: declared.platforms ?? ['all'],
+        // 平台声明在 SKILL.md frontmatter（skill.platforms），interface.json 里没有这个字段。
+        platforms: skill.platforms ?? [],
         commands: (declared.commands ?? []).map(command => ({
           name: command.name,
           summary: command.summary ?? '',