docs: update README with project name, badges, and quickstart instructions for better visibility and usability

docs: enhance README formatting for improved clarity and structure; update lesson generation and telemetry sections

feat: refactor lesson submission logic to handle resolved topics; add quick example buttons for user convenience

feat: update styling to use tone-based colors for improved consistency across components; enhance lesson orchestration tests for validation errors

feat: implement failure telemetry logging for schema validation and unexpected exceptions; update documentation

feat: refine frontend styling and typography for improved clarity and layout

feat: enhance frontend UX with loading error toasts, elapsed time display, and Markdown export controls; update documentation

feat: refine Logo component styling and remove unused Sparkles icon; enhance Home page text clarity

feat: add Logo component with icons and branding

release: v0.3.0 prompts, validator, UX, and build workflow

feat: enhance CodeBlock and ExerciseBlock components; add error hints and completion toggle

docs: enhance documentation for lesson generation and validation; clarify agent roles, prompt sources, and formatting rules

feat: enhance loading messages and progress indication; implement structured loading phases and improve UI feedback

feat: enhance content generation and validation; add structured formatting for text blocks and enforce text block rules

feat: enhance lesson content rules and validation; add strict exercise block formatting and import requirements