client のリファクタリング

[peaks-and-valleys]

• 共通化できる要素のコンポーネント化
• 変数の命名規則を揃える
• 冗長なマークアップの修正
• Index.tsx に非同期処理の待機時の状態を追加

close #185

[Copilot]

Pull Request Overview

Refactors page components by extracting common image listing into a shared WorksImages component, normalizing naming conventions, removing redundant fragments, and adding a loading state to the Index.tsx page.

• Extracted inline image list renderers into WorksImages and updated all pages to use it
• Removed unnecessary fragment wrappers (<>...</>) around <main> elements
• Renamed variables to camelCase, updated imports, and added a loading fallback in Index.tsx

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
client/src/pages/SeasonWork.tsx	Removed redundant fragment wrapper
client/src/pages/Season.tsx	Replaced inline SeasonImages with shared WorksImages
client/src/pages/MaterialWork.tsx	Removed redundant fragment wrapper
client/src/pages/Material.tsx	Replaced inline MaterialImages with shared WorksImages
client/src/pages/Index.tsx	Renamed date variables, added loading state before render
client/src/pages/ExhibitionWork.tsx	Removed redundant fragment wrapper
client/src/pages/Exhibition.tsx	Replaced inline ExhibitionImages with shared WorksImages
client/src/pages/CategoryWork.tsx	Renamed works_url to worksUrl, removed redundant fragment
client/src/pages/Category.tsx	Replaced inline CategoryImages with shared WorksImages
client/src/pages/ArrangerWork.tsx	Removed redundant fragment wrapper
client/src/pages/Arranger.tsx	Added type annotation on arrangerWorks, replaced inline images
client/src/components/WorksImages.tsx	Introduced shared component for listing work thumbnails
client/src/components/WorkImages.tsx	Removed unnecessary fragment wrapper in WorkImages

Comments suppressed due to low confidence (2)

client/src/pages/Index.tsx:48

• The new loading branch (if (!exhibitions)) introduces conditional UI that should be covered by a unit or integration test to ensure the loading state renders correctly.

  if (!exhibitions) {

client/src/components/WorksImages.tsx:2

• Importing Link from 'react-router' may not work in a browser environment; typically Link comes from 'react-router-dom'.

import { Link } from "react-router";

[Copilot]

Using the array index as the React key can cause rendering issues; consider using a unique identifier like work.id for the key prop.

Suggested change

	{works.map((work, index) => (
	<li key={index}>
	{works.map((work) => (
	<li key={work.id}>

[Copilot]

Accessing work.image_ids[0] without first checking for its existence can lead to runtime errors if image_ids is empty or undefined; add a guard or fallback.

Suggested change

	src={`${import.meta.env.VITE_API_BASE_URL}/images/${work.image_ids[0]}`}
	src={
	work.image_ids && work.image_ids.length > 0
	? `${import.meta.env.VITE_API_BASE_URL}/images/${work.image_ids[0]}`
	: `${import.meta.env.VITE_API_BASE_URL}/images/placeholder.png`
	}