fix(desktop): hide Matrix-only toolsets from capability toggles

apps/desktop/src/app/capabilities/index.test.tsx

@@ -131,6 +131,29 @@ afterEach(() => {
 // all 11 tests (2× in a row on PR #93612, plus a main run the same hour).
 // Give this file headroom; the tests are not slow individually.
 describe('CapabilitiesView toolset management', { timeout: 60_000 }, () => {
+  it.each(['matrix_read', 'matrix_unread', 'matrix_image_packs', 'matrix_reaction', 'matrix_followup'])(
+    'excludes %s from Desktop rows and bulk writes',
+    async name => {
+      const matrix = toolset({ name, label: 'Matrix channel', tools: [name] })
+      getToolsets.mockResolvedValue([toolset(), matrix])
+      await renderSkills()
+      await screen.findByRole('switch', { name: 'Turn Web Search toolset off' })
+      expect(screen.getAllByRole('switch').map(element => element.getAttribute('aria-label'))).toEqual([
+        'Turn Web Search toolset off'
+      ])
+
+      await act(async () => {
+        fireEvent.pointerDown(screen.getByRole('button', { name: 'Tools' }), { button: 0, ctrlKey: false })
+      })
+      const all = await screen.findByRole('menuitem', { name: 'All' })
+      await act(async () => {
+        fireEvent.click(all)
+      })
+      await waitFor(() => expect(setToolsetEnabled.mock.calls).toEqual([['web', false, 'default']]))
+      expect(matrix).toEqual(toolset({ name, label: 'Matrix channel', tools: [name] }))
+    }
+  )
+
   it('renders a switch for each toolset and toggles it off', async () => {
     await renderSkills()
 

apps/desktop/src/app/capabilities/toolsets/toolsets-data.test.ts

@@ -0,0 +1,51 @@
+import { describe, expect, it } from 'vitest'
+
+import type { ToolsetInfo } from '@/types/hermes'
+
+import { filteredToolsets, toolsetSearchTerms, visibleToolsetCount } from './toolsets-data'
+
+describe('Desktop toolset curation', () => {
+  it('excludes platform-only toolsets from rows, counts and search suggestions without changing their configuration', () => {
+    const row = (name: string): ToolsetInfo => ({
+      name,
+      label: name,
+      description: name,
+      tools: [name],
+      enabled: true,
+      configured: true
+    })
+
+    const web = row('web')
+
+    const extension = row('matrix_custom')
+
+    const rows = [
+      web,
+      row('matrix_read'),
+      row('matrix_admin'),
+      row('matrix_unread'),
+      row('matrix_image_packs'),
+      row('matrix_reaction'),
+      row('matrix_followup'),
+      extension
+    ]
+
+    const before = structuredClone(rows)
+
+    const visible = filteredToolsets(rows, '', { web: 10 }, true)
+
+    expect({
+      visible,
+      count: visibleToolsetCount(rows),
+      suggestions: toolsetSearchTerms(rows),
+      searched: filteredToolsets(rows, 'matrix', {}, true),
+      configuration: rows
+    }).toEqual({
+      visible: [web, extension],
+      count: 2,
+      suggestions: ['web', 'matrix_custom'],
+      searched: [extension],
+      configuration: before
+    })
+  })
+})

apps/desktop/src/lib/desktop-toolsets.ts

@@ -13,6 +13,12 @@ const DESKTOP_HIDDEN_TOOLSETS = new Set([
   // adapter; `hermes tools` restricts these off the CLI too.
   'discord',
   'discord_admin',
+  'matrix_admin',
+  'matrix_read',
+  'matrix_unread',
+  'matrix_image_packs',
+  'matrix_reaction',
+  'matrix_followup',
   'yuanbao',
   // Internal plumbing, not a user capability toggle.
   'context_engine',