Add PDF translation API, utilities, docs, and config

Introduces core backend and frontend infrastructure for a PDF translation interface. Adds API endpoints for translation, PDF testing, and AI provider testing; implements PDF text extraction, cost tracking, and pricing logic in the lib directory; adds reusable UI components; and provides comprehensive documentation (SDD, environment setup, Claude instructions). Updates Tailwind and global styles, and includes a sample test PDF and configuration files.

package.json

@@ -4,12 +4,14 @@
   "private": true,
   "scripts": {
     "build": "next build",
-    "dev": "next dev",
+    "dev": "next dev --port 3000",
     "lint": "eslint .",
     "start": "next start"
   },
   "dependencies": {
+    "@ai-sdk/openai": "^2.0.52",
     "@hookform/resolvers": "^3.10.0",
+    "@pdf-lib/fontkit": "^1.1.1",
     "@radix-ui/react-accordion": "1.2.2",
     "@radix-ui/react-alert-dialog": "1.1.4",
     "@radix-ui/react-aspect-ratio": "1.1.1",
@@ -40,6 +42,7 @@
     "@vercel/analytics": "latest",
     "ai": "latest",
     "autoprefixer": "^10.4.20",
+    "canvas": "^3.2.0",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cmdk": "1.0.4",
@@ -50,20 +53,29 @@
     "lucide-react": "^0.454.0",
     "next": "15.2.4",
     "next-themes": "latest",
+    "pdf-lib": "^1.17.1",
+    "pdf-parse": "^2.3.11",
+    "pdf-poppler": "^0.2.3",
+    "pdf2json": "^4.0.0",
+    "pdf2pic": "^3.2.0",
+    "pdfjs-dist": "^5.4.296",
+    "pdfkit": "^0.17.2",
     "react": "^19",
     "react-day-picker": "9.8.0",
     "react-dom": "^19",
     "react-hook-form": "^7.60.0",
     "react-resizable-panels": "^2.1.7",
     "recharts": "2.15.4",
+    "sharp": "^0.34.4",
     "sonner": "^1.7.4",
     "tailwind-merge": "^2.5.5",
     "tailwindcss-animate": "^1.0.7",
+    "tesseract.js": "^6.0.1",
     "vaul": "^0.9.9",
     "zod": "3.25.76"
   },
   "devDependencies": {
-    "@tailwindcss/postcss": "^4.1.9",
+    "@tailwindcss/postcss": "^4.1.14",
     "@types/node": "^22",
     "@types/react": "^19",
     "@types/react-dom": "^19",
@@ -72,4 +84,4 @@
     "tw-animate-css": "1.3.3",
     "typescript": "^5"
   }
-}
+}