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)

.gitignore

@@ -0,0 +1,47 @@
+# dependencies
+node_modules/
+.pnp
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/versions
+
+# testing
+coverage/
+
+# next.js
+.next/
+out/
+
+# production
+build/
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+
+# env files — commit .env.local.example template, but not actual secrets
+.env*.local
+!.env.local.example
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts
+
+# uploaded images (user-generated content)
+apps/web/public/uploads/*
+!apps/web/public/uploads/.gitkeep
+
+# pi agent state
+.ralpi/