0.2.1. Minor speed improventents

[0.2.1] - 2025-12-27

Removed

• Unused Error Classes: Removed lib/errors.ts file containing unused error classes (ValidationError, NotFoundError, InternalServerError)
• Unused Functions: Removed createButtonStyle() and disabledButtonStyle from button styles
• Unused Validation: Removed validateEnvironment() function that only re-threw errors

Changed

• Performance: Optimized saveDrawing() to reduce database operations from 3 to 1
• Performance: Replaced loadDrawing() with fs.access() in PUT route for faster existence checks
• Code Quality: Removed duplicate directory creation logic (consolidated into getDatabase())
• Code Quality: Removed unnecessary host/port caching (env vars already cached by Node.js)
• Code Quality: Removed redundant validation checks in saveDrawing()

Technical

• Consolidated directory creation to single source (getDatabase())
• Simplified PUT route to only load metadata when needed
• Reduced redundant file system and database operations