Render compiled plugin entries in the admin plugins list

Why: /api/plugins now merges compiled-in plugins (backend.mode=inproc);
the list needed to badge them as builtin, count their commands, and stop
printing a dangling "v" when the synthesized manifest has no version.
Evidence: npx vitest run 100/100 green incl. design-guard; tsc --noEmit
clean for src (../ui errors are the symlinked-deps environment only);
CI (make test) is authoritative.
Impact: PluginsSection label hides empty versions, desc adds a command
count and falls back to manifest intent counts, and inproc entries get a
"内置" badge next to the api badge. No token or color changes.
Refs: WP3-I4; task card feature-plugins-compiled-listing.

src/components/adminSections.tsx

@@ -193,9 +193,18 @@ export function PluginsSection() {
       {plugins.length === 0 && <EmptyState icon="puzzle">暂无已装载插件<br />（插件目录在 设置 → 常规 → 插件目录；示例见 Dev 仓 plugins/example）</EmptyState>}
       {plugins.map(p => (
         <SettingRow key={p.manifest.id}
-          label={`${p.manifest.name} v${p.manifest.version}`}
-          desc={[`工具 ${p.manifest.provides.tools?.length ?? 0}`, `面板 ${p.panels?.length ?? 0}`, `意图 ${p.intents?.length ?? 0}`, `工作流 ${p.workflows?.length ?? 0}`].join(' · ')}>
-          <span className="effect-badge">api {p.manifest.apiVersion}</span>
+          label={p.manifest.name + (p.manifest.version ? ` v${p.manifest.version}` : '')}
+          desc={[
+            `工具 ${p.manifest.provides.tools?.length ?? 0}`,
+            `命令 ${p.manifest.provides.commands?.length ?? 0}`,
+            `面板 ${p.panels?.length ?? 0}`,
+            `意图 ${p.intents?.length ?? p.manifest.provides.intents?.length ?? 0}`,
+            `工作流 ${p.workflows?.length ?? 0}`,
+          ].join(' · ')}>
+          <span style={{ display: 'inline-flex', gap: 6, alignItems: 'center' }}>
+            {p.manifest.backend?.mode === 'inproc' && <span className="effect-badge">内置</span>}
+            <span className="effect-badge">api {p.manifest.apiVersion}</span>
+          </span>
         </SettingRow>
       ))}
     </div>