Add Flashlang - an extension for quickly searching vocabulary by AI.

extensions/flashlang/.eslintrc.json

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+{
+  "root": true,
+  "extends": ["@raycast"]
+}

extensions/flashlang/.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+
+# Raycast specific files
+raycast-env.d.ts
+.raycast-swift-build
+.swiftpm
+compiled_raycast_swift
+
+# misc
+.DS_Store

extensions/flashlang/.prettierrc

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+{
+  "printWidth": 120,
+  "singleQuote": false
+}

extensions/flashlang/CHANGELOG.md

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+# FlashLang Changelog
+
+## [Initial Version] - {PR_MERGE_DATE}

extensions/flashlang/README.md

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+# FlashLang
+
+![Search Vocabulary](assets/flashlang-0.png)
+A powerful Raycast extension that combines AI-powered translation with flashcard learning system.
+
+You can search vocabulary you want to learn and add it to your flashcard deck,
+then review your flashcards regularly to improve retention.
+
+## Getting Started
+
+1. Install the extension through Raycast
+2. Set your native language and target learning language
+3. Start translating words by either:
+   - Using clipboard content
+   - Selecting text directly
+4. You can refresh the content by using `Refresh` command
+5. Review your flashcards regularly to improve retention
+
+## Usage
+
+### Translation
+
+- Use `Translate It for Me` command to translate text
+- You can set a shortcut to open this command quickly
+- View translation history and manage saved translations
+
+### Flashcard Management
+
+- Add important vocabulary to your flashcard deck
+- Rate your proficiency level (1-5 stars)
+
+### Review Session
+
+- Start a review session with `Review Flashcards` command
+- Rate your knowledge of each card
+- Track your learning progress over time
+
+## Requirements
+
+- Raycast
+- Internet connection for AI translation
+
+## License
+
+MIT