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- Replace outdated login page copy with branded hero + rotating phrases

apps/docs/index.md

@@ -4,7 +4,7 @@ layout: home
 hero:
   name: "SnapOtter"
   text: "A Self Hosted Image Manipulator"
-  tagline: 50 tools. Local AI. No cloud. Your images never leave your home.
+  tagline: 51 tools. Local AI. No cloud. Your images never leave your home.
   actions:
     - theme: brand
       text: Get started
@@ -14,7 +14,7 @@ hero:
       link: /api/rest
 
 features:
-  - title: 50 Image Tools
+  - title: 51 Image Tools
     details: Resize, crop, compress, convert, watermark, color adjust, vectorize, create GIFs, build collages, generate passport photos, find duplicates, and more.
   - title: Local AI
     details: 15 AI-powered tools - remove backgrounds, upscale, enhance images, restore and colorize old photos, erase objects, blur faces, enhance faces, extract text (OCR), fix fake transparency. All on your hardware, no internet required.