fix: update tool count to 51, refresh hero copy and login page

- Update stale tool counts (48/49/50) to 51 across all apps, docs, and tests
- Add Meme Generator to landing page bento grid (was missing)
- Add 12 SEO-friendly rotating phrases to hero typing cursor
- Change landing hero subtitle to "Every image tool you need."
- Replace outdated login page copy with branded hero + rotating phrases

tests/e2e-docs/homepage.spec.ts

@@ -13,7 +13,7 @@ test.describe("Docs Homepage", () => {
     await expect(page.getByText("SnapOtter").first()).toBeVisible();
     await expect(page.getByText("A Self Hosted Image Manipulator")).toBeVisible();
     await expect(
-      page.getByText("50 tools. Local AI. No cloud. Your images never leave your home."),
+      page.getByText("51 tools. Local AI. No cloud. Your images never leave your home."),
     ).toBeVisible();
   });
 
@@ -29,7 +29,7 @@ test.describe("Docs Homepage", () => {
 
   test("features section renders all 6 feature cards", async ({ page }) => {
     const features = [
-      "48 Image Tools",
+      "51 Image Tools",
       "Local AI",
       "Pipelines",
       "REST API",