refactor: remove Anki import/export and simplify card system

- Remove Anki apkg import/export functionality
- Remove OCR feature module
- Remove note and note-type modules
- Simplify card/deck modules (remove spaced repetition complexity)
- Update translator and dictionary features
- Clean up unused translations and update i18n files
- Simplify prisma schema

messages/en-US.json

@@ -92,10 +92,28 @@
     "word": "Word",
     "definition": "Definition",
     "ipa": "IPA",
+    "ipaPlaceholder": "Enter IPA pronunciation",
     "example": "Example",
+    "examplePlaceholder": "Enter an example sentence",
     "wordAndDefinitionRequired": "Word and definition are required",
+    "wordRequired": "Word is required",
+    "definitionRequired": "At least one definition is required",
+    "cardAdded": "Card added successfully",
+    "cardType": "Card Type",
+    "wordCard": "Word",
+    "phraseCard": "Phrase",
+    "sentenceCard": "Sentence",
+    "sentence": "Sentence",
+    "sentencePlaceholder": "Enter a sentence",
+    "wordPlaceholder": "Enter a word",
+    "queryLang": "Language",
+    "meanings": "Meanings",
+    "addMeaning": "Add Meaning",
+    "partOfSpeech": "Part of Speech",
     "edit": "Edit",
     "delete": "Delete",
+    "deleteConfirm": "Are you sure you want to delete this card?",
+    "cardDeleted": "Card deleted",
     "permissionDenied": "You do not have permission to perform this action",
     "resetProgress": "Reset",
     "resetProgressTitle": "Reset Deck Progress",
@@ -115,6 +133,10 @@
     "todayNew": "New",
     "todayReview": "Review",
     "todayLearning": "Learning",
+    "updating": "Updating...",
+    "cardUpdated": "Card updated",
+    "wordRequired": "Word is required",
+    "definitionRequired": "At least one definition is required",
     "error": {
       "update": "You do not have permission to update this card.",
       "delete": "You do not have permission to delete this card.",
@@ -392,7 +414,22 @@
     "viewSavedItems": "View Saved Items",
     "confirmDeleteAll": "Are you sure you want to delete everything? (Y/N)",
     "saved": "Saved",
-    "clearAll": "Clear All"
+    "clearAll": "Clear All",
+    "language": "Language",
+    "customLanguage": "or type language...",
+    "languages": {
+      "auto": "Auto",
+      "chinese": "Chinese",
+      "english": "English",
+      "japanese": "Japanese",
+      "korean": "Korean",
+      "french": "French",
+      "german": "German",
+      "italian": "Italian",
+      "spanish": "Spanish",
+      "portuguese": "Portuguese",
+      "russian": "Russian"
+    }
   },
   "translator": {
     "detectLanguage": "detect language",
@@ -426,7 +463,19 @@
       "success": "Text pair added to folder",
       "error": "Failed to add text pair to folder"
     },
-    "autoSave": "Auto Save"
+    "autoSave": "Auto Save",
+    "pleaseLogin": "Please login to save cards",
+    "pleaseCreateDeck": "Please create a deck first",
+    "noTranslationToSave": "No translation to save",
+    "noDeckSelected": "No deck selected",
+    "saveAsCard": "Save as Card",
+    "selectDeck": "Select Deck",
+    "front": "Front",
+    "back": "Back",
+    "cancel": "Cancel",
+    "save": "Save",
+    "savedToDeck": "Card saved to {deckName}",
+    "saveFailed": "Failed to save card"
   },
   "dictionary": {
     "title": "Dictionary",