新增只读 Hermes 插件页 (#592)

* feat: add read-only plugins page

* fix: align plugins page i18n and header

tests/server/plugins-routes.test.ts

@@ -0,0 +1,34 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+
+const listMock = vi.fn(async (ctx: any) => {
+  ctx.body = { plugins: [], warnings: [], metadata: {} }
+})
+
+vi.mock('../../packages/server/src/controllers/hermes/plugins', () => ({
+  list: listMock,
+}))
+
+describe('plugin routes', () => {
+  beforeEach(() => {
+    vi.resetModules()
+    listMock.mockClear()
+  })
+
+  it('registers the plugins inventory route', async () => {
+    const { pluginRoutes } = await import('../../packages/server/src/routes/hermes/plugins')
+    const paths = pluginRoutes.stack.map((entry: any) => entry.path)
+
+    expect(paths).toEqual(expect.arrayContaining(['/api/hermes/plugins']))
+  })
+
+  it('delegates plugin listing to the controller', async () => {
+    const { pluginRoutes } = await import('../../packages/server/src/routes/hermes/plugins')
+    const layer = pluginRoutes.stack.find((entry: any) => entry.path === '/api/hermes/plugins')
+    const ctx: any = { body: null, params: {}, query: {} }
+
+    await layer.stack[0](ctx)
+
+    expect(listMock).toHaveBeenCalledWith(ctx)
+    expect(ctx.body).toEqual({ plugins: [], warnings: [], metadata: {} })
+  })
+})