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Internal dev.tools project conventions — state, styling, contexts, typing, and code style rules
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Add or update an app in the dev.tools software installer catalog
Add a prompt or skill to the dev.tools prompts collection (TypeScript catalog workflow)
Add a new tool page to dev.tools — covers ToolView, Editor, and Custom patterns
Scaffold a new tool page in dev.tools following the established pattern
Run the complete dev.tools pre-commit verification pipeline
Extend the LLM VRAM calculator — add quant families, update formulas, add test anchors
| name | project-conventions |
| description | Internal dev.tools project conventions — state, styling, contexts, typing, and code style rules |
Internal reference skill. Not user-invocable. Apply these conventions whenever reading or writing code in this repo.
React Context API only. No Redux, no Zustand, no external state libraries.
The five contexts in src/components/contexts/:
| Context | Import path | Purpose |
|---|---|---|
ThemeContext | @/contexts/ThemeContext | Light/dark theme; persists to localStorage; sets data-theme on <html> |
PageContext | @/contexts/PageContext | Page title (setPageTitle()), About panel visibility (helpVisible, setHelpVisible, setHasToolAbout) |
ToasterContext | @/contexts/ToasterContext | User feedback toasts |
FileOpenContext | @/contexts/FileOpenContext | File open dialog |
FileSaveDialogContext | @/contexts/FileSaveDialogContext | File save dialog |
Every page component must call setPageTitle inside useEffect:
const { setPageTitle } = usePage();
useEffect(() => {
setPageTitle('My Page Title');
}, [setPageTitle]);
src/styles/.scss file per feature areasrc/styles/colors.scss — use these, do not hardcode hex values| Alias | Resolves to |
|---|---|
@/* | src/* |
@/contexts/* | src/components/contexts/* |
@/controls/* | src/components/controls/* |
@/elements/* | src/components/elements/* |
@/styles/* | src/styles/* |
Always use path aliases for imports that cross feature boundaries.
Shared types live in src/common/types.ts. The key interfaces:
IStringUtil — synchronous tool { toolId, textToDisplay, description?, toolFunction: (input: string) => string }IHashUtil — async tool { toolId, textToDisplay, description?, toolFunction: (input: string) => Promise<string> }UtilList — group of tools { toolGroupId, displayName, utils: IStringUtil[] }Do not redefine these anywhere else. Import from @/common/types.
All tool factory functions (createXxxUtils(), createXxxUtilList()) live in src/common/utils-factory.ts. Page components import from there — never define tool arrays inline in a page component.
package.json){
"printWidth": 120,
"tabWidth": 4,
"useTabs": false,
"semi": true,
"singleQuote": true,
"quoteProps": "consistent",
"trailingComma": "all",
"bracketSpacing": true,
"arrowParens": "always",
"objectWrap": "collapse",
"proseWrap": "preserve",
"plugins": ["prettier-plugin-organize-imports"]
}
PostToolUse hook auto-runs Prettier on every edit — do not fight the formatter.
Write no comments by default. Only add one when the WHY is non-obvious: a hidden constraint, a subtle invariant, or a workaround for a specific bug. Do not document WHAT the code does.
Every tool page that has an "About this tool" collapsible panel must mount <ToolAbout>:
import ToolAbout from '@/controls/ToolAbout';
// Inside the page JSX, above <ToolView>:
<ToolAbout routeKey="my-tool">One-paragraph description shown when the user opens the About panel.</ToolAbout>;
routeKey — kebab-case route identifier; used as the localStorage key toolAbout:<routeKey>.localStorage automatically; default is false (hidden).ToolAbout is mounted (controlled via setHasToolAbout).ToolAbout to pages that have no meaningful description to show.Use for Monaco-left + rendered-preview-right layouts (Markdown, Mermaid, HTML tools).
import SplitPreviewEditor from '../../components/elements/editor/SplitPreviewEditor';
<SplitPreviewEditor
language="markdown"
value={content}
onChange={setContent}
renderPreview={(val) => <MyRenderer source={val} />}
editorToolbarChildren={<CopyButton />} // optional
previewToolbarChildren={<ExportButton />} // optional
/>;
The component applies .editorpane, .eh, and .eb CSS primitives from primitives.scss internally — do not wrap it in additional pane divs.
The app builds as a static export (next.config.mjs: output: 'export'). No server-side APIs, no getServerSideProps. Use getStaticProps / getStaticPaths if needed, or client-side data fetching only.
When running Subagent-Driven Development sessions, skip the per-task reviewer dispatch when ALL of the following hold:
Keep per-task reviews when:
Final review: Focus the final whole-branch reviewer on correctness bugs and spec completeness only — not style, formatting, or naming (those are lint/Prettier's job). Skip Minor style findings in the final review dispatch.
Rationale: In T3.2 (Jun 2026), 3 per-task reviews took ~2m 47s and found only Minor style issues (JSX comments, import order — all lint-catchable). The final review caught the actual correctness bug. Per-task reviews add proportional value only on design-judgment tasks.