Initial commit: Plant Disease Identification app

- Next.js 16 App Router project with Tailwind CSS
- Plant disease knowledge base (93 diseases, 25 plants)
- Image upload with client+server preprocessing
- ML inference pipeline with mock/demo fallback
- Responsive results page with disease cards and treatment
- Full test suite (285 passing tests)

apps/web/.prettierrc

@@ -0,0 +1,8 @@
+{
+  "semi": true,
+  "trailingComma": "all",
+  "singleQuote": false,
+  "printWidth": 100,
+  "tabWidth": 2,
+  "useTabs": false
+}