Sitesmith: self-review is intent 'review' (not a mockup); typed statuses with specific messages (G3, G6)

- The self-review follow-up sends intent:'review' + review_image_ids instead of
  putting the render in mockup_ids, so the backend builds a critique+patch
  instruction instead of 'build toward this mockup'. Render still deleted after.
- types/sitesmith.ts: SitesmithStatus = server statuses (adds IMAGES_BUSY,
  TOO_MANY_JOBS, SERVER_BUSY, ...) + client statuses (TIMEOUT, ABORTED, ...);
  network status strings are narrowed with a type guard (unknown -> ERROR);
  the hook builds SendResultErr without casts.
- statusMessages.ts: one specific message per status (a Record over the union,
  so a new status without a message fails tsc), used by the modal.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

craft/scripts/e2e-sitesmith.mjs

@@ -324,7 +324,7 @@ scenario('8', 'self-review round trip (one round)', async ({ page, name, ok }) =
     !!up && up.mime === 'image/jpeg' && up.kind === 'mockup' && up.name === 'self-review-render.jpg' && up.size > 2000, JSON.stringify(up));
   const s2 = srv.starts[1] ?? {};
   ok('second job message starts "Review the attached screenshot"', typeof s2.message === 'string' && s2.message.startsWith('Review the attached screenshot'), String(s2.message).slice(0, 60));
-  ok('second job carries the upload id in mockup_ids', Array.isArray(s2.mockup_ids) && s2.mockup_ids.includes(up?.id), JSON.stringify(s2.mockup_ids));
+  ok('second job is intent "review" carrying the upload id in review_image_ids (not mockup_ids)', s2.intent === 'review' && Array.isArray(s2.review_image_ids) && s2.review_image_ids.includes(up?.id) && !s2.mockup_ids, JSON.stringify({ intent: s2.intent, review_image_ids: s2.review_image_ids, mockup_ids: s2.mockup_ids }));
   ok('second job has use_assets false', s2.use_assets === false, String(s2.use_assets));
   ok('render image deleted afterwards', srv.imageDeletes.includes(up?.id), JSON.stringify(srv.imageDeletes));
   await page.waitForTimeout(2500);