refactor: remove unused parser files and update ParsedReceiptItem model with additional fields

backend/package.json

@@ -25,11 +25,9 @@
     "class-transformer": "^0.5.1",
     "class-validator": "^0.15.1",
     "multer": "^1.4.5-lts.2",
-    "pdf-parse": "^1.1.1",
     "reflect-metadata": "^0.2.2",
     "rxjs": "^7.8.1",
     "sharp": "^0.33.5",
-    "tesseract.js": "^6.0.1",
     "uuid": "^11.1.0",
     "helmet": "^8.0.0",
     "@nestjs/throttler": "^6.4.0"
@@ -43,7 +41,6 @@
     "@types/multer": "^1.4.12",
     "@types/node": "^22.15.29",
     "@types/passport-jwt": "^4.0.1",
-    "@types/pdf-parse": "^1.1.5",
     "@types/uuid": "^10.0.0",
     "prisma": "6.12.0",
     "typescript": "^5.4.5",