feat: persist context snapshots and defer permission changes to next messages

scripts/permission-next-send-render-regression.tsx

@@ -0,0 +1,14 @@
+import assert from 'node:assert/strict'
+import { renderToStaticMarkup } from 'react-dom/server'
+import SourcePermissionControl from '../src/renderer/src/workbuddy/composer/permission/SourcePermissionControl'
+
+for (const mode of ['default-sandbox', 'full-access'] as const) {
+  const render = (nextSend: boolean, disabled = false) => renderToStaticMarkup(<SourcePermissionControl
+    mode={mode} nextSend={nextSend} disabled={disabled} onChange={async () => { throw new Error('render must not mutate policy') }} onError={() => {}} />)
+  const busy = render(true)
+  assert.ok(busy.includes('下次发送生效'), 'busy selector must identify future policy, not claim current policy changed')
+  assert.ok(!busy.includes('disabled=""'), 'a running/sending turn must not disable preference selection')
+  assert.ok(!render(false).includes('下次发送生效'))
+  assert.ok(render(true, true).includes('disabled=""'), 'plan/ask and load guards remain enforceable')
+}
+console.log('Next-send permission labels and enabled/disabled static rendering passed')