Support Gemma 4 reasoning on Cloudflare Workers AI (#123)

Add Anthropic Claude Support (#122)

Refine Flashcard review UI layout for proper scrolling

Polish nav transitions and unify app action styling

Expand language options and inline language flags

Refine web UI layout and improve frontend responsiveness

feat: Implement masonry layout for word cards and add custom scrollbars to card content.

feat: instruct AI to provide explanations in the target language when specified.

feat: Adjust noise background styling, refactor app surface backgrounds, increase scroll direction threshold, and set theme panel background to solid.

Fix header stickiness and blur performance issues (#117)

feat: move google search configuration to global settings and optimize ui/build

feat: Add Google Custom Search API Integration (#116)

feat: add configurable prompt modes for AI translation (#115)

feat: add gemini google search grounding (#113)

feat: Migrate system configs to DB with cache and UI management (#111)