test(web): cover skill invocation policy on real host

apps/web/tests/skill-invocation-policy.e2e.ts

@@ -0,0 +1,115 @@
+// Web e2e scenario: the real host filters skill.list to the model-and-user
+// intersection before the browser slash source renders candidates. A real
+// chromium connects a fresh workspace seeded with all four policy quadrants;
+// no model call is issued, so a stray stream fails loud on the open LLM seam.
+import { mkdir, writeFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import {
+  assertFixtureInventory,
+  captureStableAria,
+  compareOrRefreshGolden,
+  launchWebScaffold,
+  watchConsole,
+  webSnapshotMode,
+  type WebScaffold,
+} from './scaffold.ts'
+import { connectFreshWorkspace, saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/skill-invocation-policy', import.meta.url))
+const MENU_EXPECTED = join(SNAPSHOT_DIR, 'menu.expected.md')
+const MODE = webSnapshotMode()
+
+interface SeedSkill {
+  name: string
+  description: string
+  frontmatter: string
+}
+
+const SKILLS: readonly SeedSkill[] = [
+  {
+    name: 'policy-shared',
+    description: 'Available to both model and user invocation',
+    frontmatter: '',
+  },
+  {
+    name: 'policy-model-only',
+    description: 'Available only to model invocation',
+    frontmatter: 'user-invocable: false\n',
+  },
+  {
+    name: 'policy-user-only',
+    description: 'Available only to user invocation',
+    frontmatter: 'disable-model-invocation: true\n',
+  },
+  {
+    name: 'policy-trusted-only',
+    description: 'Available only to trusted internal callers',
+    frontmatter: 'disable-model-invocation: true\nuser-invocable: false\n',
+  },
+]
+
+async function seedSkills(workspaceCwd: string): Promise<void> {
+  for (const skill of SKILLS) {
+    const directory = join(workspaceCwd, 'workspace', '.agents', 'skills', skill.name)
+    await mkdir(directory, { recursive: true })
+    const policyLines = skill.frontmatter === '' ? [] : skill.frontmatter.trimEnd().split('\n')
+    await writeFile(join(directory, 'SKILL.md'), [
+      '---',
+      `name: ${skill.name}`,
+      `description: ${skill.description}`,
+      ...policyLines,
+      '---',
+      '',
+      `# ${skill.name}`,
+      '',
+    ].join('\n'))
+  }
+}
+
+describe('web e2e: skill invocation policy through the real host', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({})
+    await seedSkills(scaffold.workspaceCwd)
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    await connectFreshWorkspace(page)
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('renders only the model-and-user intersection in slash candidates', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-skill-invocation-policy'))
+    const input = page.locator('textarea').first()
+    await input.fill('/policy')
+    const menu = page.getByRole('listbox', { name: 'Trigger suggestions' })
+    await expect.poll(
+      () => menu.getByRole('option', { name: /policy-shared/ }).count(),
+      { timeout: 10_000 },
+    ).toBe(1)
+
+    expect(await menu.getByRole('option', { name: /policy-model-only/ }).count()).toBe(0)
+    expect(await menu.getByRole('option', { name: /policy-user-only/ }).count()).toBe(0)
+    expect(await menu.getByRole('option', { name: /policy-trusted-only/ }).count()).toBe(0)
+
+    const snapshot = await captureStableAria(page, '[role="listbox"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(MENU_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+    await assertFixtureInventory(SNAPSHOT_DIR, ['menu.expected.md'])
+  })
+})

apps/web/tests/slash-flow.snapshot.ts

@@ -2,7 +2,7 @@
 // Assembled keyless snapshot of the slash/input/session convergence under the
 // agent-parity model: the New Session view state locks the composer until a
 // Workspace is picked (connectWorkspace materializes the full Session+Agent),
-// the '/' menu serves the session's filtered skill and wire command catalogs
+// the '/' menu renders the session's skill and wire command catalogs
 // (sessions are always agent-backed — no draft/materialized split), a skill
 // pick inserts its reference, a leadingInput command claims,
 // submits over the wire, and notices its result, and the SAME composer
@@ -141,9 +141,10 @@ it('locked view state, skill discovery, /echo claim chain, and blank-on-acceptan
   )
   expect(composer.disabled).toBe(false)
 
-  // The built skill plugin prewarms the session-addressed catalog; querying
-  // it exercises the assembled discovery path and picking inserts the literal
-  // reference into the resident composer.
+  // The built skill plugin prewarms the fixture's session-addressed catalog;
+  // this pins client rendering and picking, while the real-host browser lane
+  // owns policy filtering. Picking inserts the literal reference into the
+  // resident composer.
   await typeComposer(composer, '/fixture')
   const skillMenu = await screen.findByRole('listbox', { name: 'Trigger suggestions' })
   const skillOption = await within(skillMenu).findByRole('option', { name: /fixture-demo/ })

apps/web/tests/snapshots/skill-invocation-policy/menu.expected.md

@@ -0,0 +1,2 @@
+- listbox "Trigger suggestions":
+  - option "policy-shared Available to both model and user invocation" [selected]

apps/web/tsconfig.json

@@ -36,7 +36,8 @@
     "tests/sidebar-scrollbar.e2e.ts",
     "tests/code-mode-round.e2e.ts",
     "tests/cordis-tool-round.e2e.ts",
-    "tests/message-actions.e2e.ts"
+    "tests/message-actions.e2e.ts",
+    "tests/skill-invocation-policy.e2e.ts"
   ],
   "references": [
     {

tsconfig.host.json

@@ -24,6 +24,7 @@
     "apps/web/tests/code-mode-round.e2e.ts",
     "apps/web/tests/cordis-tool-round.e2e.ts",
     "apps/web/tests/message-actions.e2e.ts",
+    "apps/web/tests/skill-invocation-policy.e2e.ts",
     "apps/cli/tests/**/*.ts",
     "examples/*/src/**/*.ts",
     "examples/*/start.ts",