feat: CI 追加

[yu-sugimoto]

No description provided.

[Copilot]

Pull request overview

This pull request adds comprehensive CI/CD infrastructure and standardizes code formatting/linting across both frontend and backend codebases. The PR introduces automated checks for linting, formatting, type checking, and testing through GitHub Actions workflows.

Changes:

• Added GitHub Actions workflow for automated code quality checks (lint, format, type-check, test)
• Configured Prettier for frontend formatting (no semicolons, single quotes, 100 char width)
• Configured Ruff and mypy for backend linting and strict type checking
• Applied formatting changes across all TypeScript/React and Python files
• Updated type annotations to use modern Python 3.10+ syntax (union types, StrEnum, UTC)
• Added new npm scripts for formatting and type checking

Reviewed changes

Copilot reviewed 45 out of 47 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
.github/workflows/check.yml	New CI workflow with 7 jobs for frontend/backend lint, format, typecheck, and test
frontend/package.json	Added Prettier dependency and format/type-check scripts
frontend/.prettierrc	Prettier configuration: no semicolons, single quotes, trailing commas
frontend/.prettierignore	Exclude dist, node_modules, package-lock.json from formatting
frontend/package-lock.json	Added Prettier 3.8.1 dependency
frontend/vite.config.ts	Fixed trailing comma formatting
frontend/tsconfig.json	Collapsed multi-line references array to single line
frontend/src/**/*.ts(x)	Applied Prettier formatting: removed semicolons, adjusted line breaks
backend/pyproject.toml	Added Ruff and mypy configuration with strict type checking
backend/uv.lock	Added ruff, mypy, and dependencies (librt, mypy-extensions, pathspec)
backend/app/**/*.py	Applied Ruff formatting, updated to modern type syntax (X | None, StrEnum, UTC)
backend/app/model/base.py	Added allow_unmapped = True for SQLAlchemy 2.0 compatibility
backend/tests/**/*.py	Applied formatting, updated Generator type hints
backend/migration/env.py	Reorganized imports per Ruff isort rules

Files not reviewed (1)

• frontend/package-lock.json: Language not supported

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