Merge pull request #1 from fEyebrow/task1-endpoints-validation

Add sort field validation with 400 Bad Request

Add input validation with Pydantic Field constraints

Add DELETE endpoints for notes and action items

Simplify TDD workflow: replace conditional refactor with code-simplifier

Add CLAUDE.md for week7 project configuration

Add TDD workflow diagram and improve development workflow docs

Add implementation plan for notes search feature

Add search UI for notes in frontend

Add case-insensitive search for notes

Simplify CLAUDE.md structure and unify command format

Fix ruff lint errors across multiple weeks

Move pre-commit config to repository root

init