Merge branch 'feature/shl-01-ui-shell-design-system-zentral' into feature/cfg-04-benachrichtigungs-einstellungen-oberflaeche

# Conflicts:
#	DEVLOG.md
This commit is contained in:
sysops
2026-08-28 23:48:23 +02:00
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*.log
.env
web/*/node_modules/
web/*/.next/
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## 2026-08-27 17:28 17:29 (1m)
**Beschreibung:** Claude Code Session
**Projekt:** code
## 2026-08-28 21:44 21:44 (0m)
**Beschreibung:** Claude Code Session
**Projekt:** nexarch
### Commits
Keine Commits in dieser Session.
@@ -127,5 +130,32 @@ Keine Commits in dieser Session.
- internal/config/config.go | 29 +++++++++++++++++++++++++++++
- internal/db/db.go | 11 +++++++++++
- migrations/0001_tenant_registry.sql | 10 ++++++++++
- web/shl/README.md | 45 +++++++++++++++++++++++++++++++++++++++++++++
- web/shl/__tests__/Dialog.test.tsx | 38 ++++++++++++++++++++++++++++++++++++++
- web/shl/__tests__/tokens.test.ts | 39 +++++++++++++++++++++++++++++++++++++++
- web/shl/components/Dialog.tsx | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- web/shl/components/FormElements.tsx | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- web/shl/components/Shell.tsx | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- web/shl/components/Table.tsx | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- web/shl/components/Toast.tsx | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- web/shl/i18n/i18n.tsx | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- web/shl/index.ts | 25 +++++++++++++++++++++++++
- web/shl/package.json | 23 +++++++++++++++++++++++
- web/shl/theme/ThemeProvider.tsx | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- web/shl/tokens/tokens.ts | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- web/shl/tsconfig.json | 18 ++++++++++++++++++
---
## 2026-08-28 21:51 21:57 (5m)
**Beschreibung:** Claude Code Session
**Projekt:** nexarch
### Commits
- 3c226da SHL-01: fix — vitest jsdom-environment + jest-dom-Setup (3 Dialog-Tests schlugen ohne DOM fehl)
### Geänderte Dateien
- web/shl/package.json | 2 ++
- web/shl/vitest.config.ts | 8 ++++++++
- web/shl/vitest.setup.ts | 1 +
---
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# @nexarch/shl — UI-Shell & Design-System (Core SHL-01)
Gemeinsames Paket für alle NEXARCH-Modul-Frontends (Core, DMS, Mail, Archive, Workflow, AI, Connect).
Ein Modul-Frontend importiert ausschließlich über `index.ts`, kopiert keine Komponenten oder Tokens lokal.
## Enthält
- **Design-Tokens** (`tokens/tokens.ts`) — Farbe (Hell/Dunkel), Abstand, Typografie. Kontrastwerte gegen WCAG 2.1 AA geprüft (siehe `__tests__/tokens.test.ts`).
- **Theming** (`theme/ThemeProvider.tsx`) — zentrale Hell/Dunkel-Umschaltung, respektiert `prefers-color-scheme`, persistiert in `localStorage`.
- **i18n-Rahmen** (`i18n/i18n.tsx`) — Umschaltmechanismus Deutsch/Englisch. Modul-Frontends registrieren ihre fachlichen Textbausteine über `registerMessages()`, statt einen eigenen Mechanismus zu bauen.
- **Basis-Komponenten** (`components/`) — `Shell` (Layout + Navigation), `Table`, `Dialog`, `TextField`/`SelectField`/`CheckboxField`, `Toast`. Alle mit WCAG-2.1-AA-Grundlage (Tastaturbedienung, ARIA-Attribute, Fokus-Management).
## Verwendung in einem Modul-Frontend
```tsx
import { ThemeProvider, I18nProvider, ToastProvider, Shell } from "@nexarch/shl";
export default function RootLayout({ children }: { children: React.ReactNode }) {
return (
<ThemeProvider>
<I18nProvider initialLocale="de">
<ToastProvider>
<Shell modules={[]} tenantLabel="Mandant XY">
{children}
</Shell>
</ToastProvider>
</I18nProvider>
</ThemeProvider>
);
}
```
## Bekannter offener Punkt
Die vier bereits gebauten Core-Frontends (`TEN-05`, `LIC-04`, `AUD-04`, `OPS-02`) sind vor diesem Paket entstanden und binden es noch nicht ein — Retrofit ist der nächste Schritt, siehe `nexarch-state.json`.
## Tests
Ausführung auf dem Test-Host (nicht lokal, siehe Projekt-Testinfrastruktur):
```bash
npm install
npm test
npm run typecheck
```
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// Prüfung: Tastaturbedienung der Basis-Komponenten funktioniert (SHL-01 Prüfung 2).
import { describe, expect, it, vi } from "vitest";
import { fireEvent, render, screen } from "@testing-library/react";
import { Dialog } from "../components/Dialog";
import { I18nProvider } from "../i18n/i18n";
function renderDialog(onClose: () => void) {
return render(
<I18nProvider>
<Dialog open titleId="test-title" title="Test-Dialog" onClose={onClose}>
<button type="button">Erste Aktion</button>
<button type="button">Zweite Aktion</button>
</Dialog>
</I18nProvider>,
);
}
describe("Dialog: Tastaturbedienung", () => {
it("schließt sich bei ESC", () => {
const onClose = vi.fn();
renderDialog(onClose);
fireEvent.keyDown(document, { key: "Escape" });
expect(onClose).toHaveBeenCalledOnce();
});
it("setzt den Fokus beim Öffnen auf das erste fokussierbare Element", () => {
renderDialog(vi.fn());
const closeButton = screen.getByRole("button", { name: /schließen/i });
expect(document.activeElement).toBe(closeButton);
});
it("ist als modaler Dialog mit Titel-Referenz ausgezeichnet", () => {
renderDialog(vi.fn());
const dialog = screen.getByRole("dialog");
expect(dialog).toHaveAttribute("aria-modal", "true");
expect(dialog).toHaveAttribute("aria-labelledby", "test-title");
});
});
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// Prüfung: Kontrastwerte erfüllen mindestens AA (SHL-01 Prüfung 3 / Akzeptanzkriterium 4).
import { describe, expect, it } from "vitest";
import { colorTokens } from "../tokens/tokens";
// WCAG-2.1-AA-Kontrastberechnung (relative Luminanz, sRGB) — keine externe Abhängigkeit nötig.
function relLuminance(hex: string): number {
const rgb = [1, 3, 5].map((i) => parseInt(hex.slice(i, i + 2), 16) / 255);
const [r, g, b] = rgb.map((c) => (c <= 0.03928 ? c / 12.92 : ((c + 0.055) / 1.055) ** 2.4));
return 0.2126 * r + 0.7152 * g + 0.0722 * b;
}
function contrastRatio(a: string, b: string): number {
const l1 = relLuminance(a);
const l2 = relLuminance(b);
const [lighter, darker] = l1 > l2 ? [l1, l2] : [l2, l1];
return (lighter + 0.05) / (darker + 0.05);
}
describe("Design-Tokens: WCAG 2.1 AA Kontrast", () => {
for (const scheme of ["light", "dark"] as const) {
const c = colorTokens[scheme];
it(`${scheme}: textPrimary auf background erfüllt AA (>= 4.5:1)`, () => {
expect(contrastRatio(c.textPrimary, c.background)).toBeGreaterThanOrEqual(4.5);
});
it(`${scheme}: textSecondary auf surface erfüllt AA (>= 4.5:1)`, () => {
expect(contrastRatio(c.textSecondary, c.surface)).toBeGreaterThanOrEqual(4.5);
});
it(`${scheme}: accentContrast auf accent erfüllt AA (>= 4.5:1)`, () => {
expect(contrastRatio(c.accentContrast, c.accent)).toBeGreaterThanOrEqual(4.5);
});
it(`${scheme}: dangerContrast auf danger erfüllt AA (>= 4.5:1)`, () => {
expect(contrastRatio(c.dangerContrast, c.danger)).toBeGreaterThanOrEqual(4.5);
});
}
});
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"use client";
// Dialog-Basis-Komponente — SHL-01. WCAG 2.1 AA: Fokus-Falle, ESC schließt, Tastaturbedienung vollständig.
import { useEffect, useRef } from "react";
import type { ReactNode } from "react";
import { useI18n } from "../i18n/i18n";
const FOCUSABLE_SELECTOR =
'a[href], button:not([disabled]), textarea:not([disabled]), input:not([disabled]), select:not([disabled]), [tabindex]:not([tabindex="-1"])';
export interface DialogProps {
open: boolean;
onClose: () => void;
titleId: string;
title: string;
children: ReactNode;
}
export function Dialog({ open, onClose, titleId, title, children }: DialogProps) {
const { t } = useI18n();
const dialogRef = useRef<HTMLDivElement>(null);
const previouslyFocused = useRef<HTMLElement | null>(null);
useEffect(() => {
if (!open) return;
previouslyFocused.current = document.activeElement as HTMLElement | null;
const node = dialogRef.current;
const focusables = node?.querySelectorAll<HTMLElement>(FOCUSABLE_SELECTOR);
focusables?.[0]?.focus();
function handleKeyDown(event: KeyboardEvent) {
if (event.key === "Escape") {
onClose();
return;
}
if (event.key !== "Tab" || !node) return;
const items = Array.from(node.querySelectorAll<HTMLElement>(FOCUSABLE_SELECTOR));
if (items.length === 0) return;
const first = items[0];
const last = items[items.length - 1];
if (event.shiftKey && document.activeElement === first) {
event.preventDefault();
last.focus();
} else if (!event.shiftKey && document.activeElement === last) {
event.preventDefault();
first.focus();
}
}
document.addEventListener("keydown", handleKeyDown);
return () => {
document.removeEventListener("keydown", handleKeyDown);
previouslyFocused.current?.focus();
};
}, [open, onClose]);
if (!open) return null;
return (
<div
className="shl-dialog-backdrop"
role="presentation"
onMouseDown={(event) => {
if (event.target === event.currentTarget) onClose();
}}
>
<div
ref={dialogRef}
className="shl-dialog"
role="dialog"
aria-modal="true"
aria-labelledby={titleId}
>
<div className="shl-dialog-header">
<h2 id={titleId}>{title}</h2>
<button type="button" onClick={onClose} aria-label={t("shl.dialog.close")}>
×
</button>
</div>
<div className="shl-dialog-body">{children}</div>
</div>
</div>
);
}
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// Formularelemente-Basis-Komponenten — SHL-01. WCAG: jedes Feld hat verknüpftes <label>,
// Fehler werden per aria-describedby + aria-invalid angebunden, nicht nur farblich markiert.
import { useId } from "react";
import type { InputHTMLAttributes, ReactNode, SelectHTMLAttributes } from "react";
interface FieldWrapperProps {
label: string;
error?: string;
hint?: string;
children: (ids: { inputId: string; describedBy: string | undefined }) => ReactNode;
}
function FieldWrapper({ label, error, hint, children }: FieldWrapperProps) {
const inputId = useId();
const hintId = hint ? `${inputId}-hint` : undefined;
const errorId = error ? `${inputId}-error` : undefined;
const describedBy = [hintId, errorId].filter(Boolean).join(" ") || undefined;
return (
<div className="shl-field">
<label htmlFor={inputId}>{label}</label>
{children({ inputId, describedBy })}
{hint && (
<p id={hintId} className="shl-field-hint">
{hint}
</p>
)}
{error && (
<p id={errorId} className="shl-field-error" role="alert">
{error}
</p>
)}
</div>
);
}
export interface TextFieldProps
extends Omit<InputHTMLAttributes<HTMLInputElement>, "id" | "aria-describedby"> {
label: string;
error?: string;
hint?: string;
}
export function TextField({ label, error, hint, ...inputProps }: TextFieldProps) {
return (
<FieldWrapper label={label} error={error} hint={hint}>
{({ inputId, describedBy }) => (
<input
id={inputId}
aria-describedby={describedBy}
aria-invalid={error ? true : undefined}
{...inputProps}
/>
)}
</FieldWrapper>
);
}
export interface SelectFieldProps
extends Omit<SelectHTMLAttributes<HTMLSelectElement>, "id" | "aria-describedby"> {
label: string;
error?: string;
hint?: string;
children: ReactNode;
}
export function SelectField({ label, error, hint, children, ...selectProps }: SelectFieldProps) {
return (
<FieldWrapper label={label} error={error} hint={hint}>
{({ inputId, describedBy }) => (
<select
id={inputId}
aria-describedby={describedBy}
aria-invalid={error ? true : undefined}
{...selectProps}
>
{children}
</select>
)}
</FieldWrapper>
);
}
export interface CheckboxFieldProps
extends Omit<InputHTMLAttributes<HTMLInputElement>, "id" | "type"> {
label: string;
}
export function CheckboxField({ label, ...inputProps }: CheckboxFieldProps) {
const inputId = useId();
return (
<div className="shl-field shl-field-checkbox">
<input id={inputId} type="checkbox" {...inputProps} />
<label htmlFor={inputId}>{label}</label>
</div>
);
}
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"use client";
// Layout-Shell mit Navigation — SHL-01 Akzeptanzkriterium 1.
// Globale Navigation zeigt nur Module, die Core für Tenant/Benutzer freigibt (Backend entscheidet, UI blendet nur aus).
import type { ReactNode } from "react";
import { useI18n } from "../i18n/i18n";
import { useTheme } from "../theme/ThemeProvider";
export interface ModuleLink {
key: string;
label: string;
href: string;
active?: boolean;
}
export interface ShellProps {
modules: ModuleLink[];
tenantLabel: string;
children: ReactNode;
}
export function Shell({ modules, tenantLabel, children }: ShellProps) {
const { scheme, toggle } = useTheme();
const { t } = useI18n();
return (
<div className="shl-shell">
<a className="shl-skip-link" href="#shl-main-content">
{t("shl.shell.skipToContent", "Zum Inhalt springen")}
</a>
<header className="shl-shell-header">
<nav aria-label={t("shl.shell.moduleNav", "Modul-Navigation")}>
<ul>
{modules.map((mod) => (
<li key={mod.key}>
<a href={mod.href} aria-current={mod.active ? "page" : undefined}>
{mod.label}
</a>
</li>
))}
</ul>
</nav>
<div className="shl-shell-context">
<span className="shl-tenant-context">{tenantLabel}</span>
<button
type="button"
onClick={toggle}
aria-label={
scheme === "light" ? t("shl.theme.toggleToDark") : t("shl.theme.toggleToLight")
}
>
{scheme === "light" ? "🌙" : "☀️"}
</button>
</div>
</header>
<main id="shl-main-content" className="shl-shell-content" tabIndex={-1}>
{children}
</main>
</div>
);
}
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// Table-Basis-Komponente — SHL-01. WCAG: semantische <table>, scope auf Kopfzellen, sortierbare Spalten per Tastatur.
import type { ReactNode } from "react";
import { useI18n } from "../i18n/i18n";
export interface TableColumn<Row> {
key: string;
header: string;
render: (row: Row) => ReactNode;
sortable?: boolean;
}
export interface TableProps<Row> {
columns: TableColumn<Row>[];
rows: Row[];
rowKey: (row: Row) => string;
sortKey?: string;
sortDirection?: "asc" | "desc";
onSort?: (key: string) => void;
caption?: string;
}
export function Table<Row>({
columns,
rows,
rowKey,
sortKey,
sortDirection,
onSort,
caption,
}: TableProps<Row>) {
const { t } = useI18n();
return (
<table className="shl-table">
{caption && <caption>{caption}</caption>}
<thead>
<tr>
{columns.map((column) => {
const isSorted = column.key === sortKey;
const ariaSort = column.sortable
? isSorted
? sortDirection === "asc"
? "ascending"
: "descending"
: "none"
: undefined;
return (
<th key={column.key} scope="col" aria-sort={ariaSort}>
{column.sortable ? (
<button
type="button"
onClick={() => onSort?.(column.key)}
className="shl-table-sort-button"
>
{column.header}
</button>
) : (
column.header
)}
</th>
);
})}
</tr>
</thead>
<tbody>
{rows.length === 0 ? (
<tr>
<td colSpan={columns.length}>{t("shl.table.noRows")}</td>
</tr>
) : (
rows.map((row) => (
<tr key={rowKey(row)}>
{columns.map((column) => (
<td key={column.key}>{column.render(row)}</td>
))}
</tr>
))
)}
</tbody>
</table>
);
}
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"use client";
// Toast-Basis-Komponente — SHL-01. WCAG: aria-live sorgt dafür, dass Screenreader Meldungen ansagen.
import { createContext, useCallback, useContext, useMemo, useState } from "react";
import type { ReactNode } from "react";
import { useI18n } from "../i18n/i18n";
export type ToastVariant = "info" | "success" | "danger" | "warning";
export interface ToastMessage {
id: string;
text: string;
variant: ToastVariant;
}
interface ToastContextValue {
toasts: ToastMessage[];
push: (text: string, variant?: ToastVariant) => void;
dismiss: (id: string) => void;
}
const ToastContext = createContext<ToastContextValue | null>(null);
export function ToastProvider({ children }: { children: ReactNode }) {
const [toasts, setToasts] = useState<ToastMessage[]>([]);
const { t } = useI18n();
const dismiss = useCallback((id: string) => {
setToasts((current) => current.filter((toast) => toast.id !== id));
}, []);
const push = useCallback((text: string, variant: ToastVariant = "info") => {
const id = `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
setToasts((current) => [...current, { id, text, variant }]);
}, []);
const value = useMemo(() => ({ toasts, push, dismiss }), [toasts, push, dismiss]);
return (
<ToastContext.Provider value={value}>
{children}
<div className="shl-toast-region" role="status" aria-live="polite" aria-atomic="false">
{toasts.map((toast) => (
<div key={toast.id} className={`shl-toast shl-toast-${toast.variant}`}>
<span>{toast.text}</span>
<button
type="button"
onClick={() => dismiss(toast.id)}
aria-label={t("shl.toast.dismiss")}
>
×
</button>
</div>
))}
</div>
</ToastContext.Provider>
);
}
export function useToast(): ToastContextValue {
const ctx = useContext(ToastContext);
if (!ctx) {
throw new Error("useToast muss innerhalb von <ToastProvider> aufgerufen werden");
}
return ctx;
}
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"use client";
// i18n-Rahmen (mind. Deutsch/Englisch) — SHL-01 Akzeptanzkriterium 5.
// Liefert nur den Umschaltmechanismus + Basis-Komponenten-Texte.
// Modul-Frontends liefern ihre eigenen fachlichen Textbausteine über registerMessages(),
// statt einen eigenen i18n-Mechanismus zu bauen (siehe UI-UX-KONZEPT.md Abschnitt 4).
import { createContext, useContext, useMemo, useState } from "react";
import type { ReactNode } from "react";
export type Locale = "de" | "en";
type MessageDict = Record<string, string>;
type MessageBundle = Record<Locale, MessageDict>;
const baseMessages: MessageBundle = {
de: {
"shl.dialog.close": "Schließen",
"shl.toast.dismiss": "Meldung schließen",
"shl.table.noRows": "Keine Einträge vorhanden",
"shl.theme.toggleToLight": "Helles Erscheinungsbild",
"shl.theme.toggleToDark": "Dunkles Erscheinungsbild",
},
en: {
"shl.dialog.close": "Close",
"shl.toast.dismiss": "Dismiss message",
"shl.table.noRows": "No entries",
"shl.theme.toggleToLight": "Switch to light theme",
"shl.theme.toggleToDark": "Switch to dark theme",
},
};
// Registry, in die Modul-Frontends ihre eigenen Textbausteine einhängen.
const registry: MessageBundle = { de: { ...baseMessages.de }, en: { ...baseMessages.en } };
export function registerMessages(locale: Locale, messages: MessageDict): void {
registry[locale] = { ...registry[locale], ...messages };
}
interface I18nContextValue {
locale: Locale;
setLocale: (locale: Locale) => void;
t: (key: string, fallback?: string) => string;
}
const I18nContext = createContext<I18nContextValue | null>(null);
export function I18nProvider({
initialLocale = "de",
children,
}: {
initialLocale?: Locale;
children: ReactNode;
}) {
const [locale, setLocale] = useState<Locale>(initialLocale);
const value = useMemo<I18nContextValue>(
() => ({
locale,
setLocale,
t: (key: string, fallback?: string) => registry[locale][key] ?? fallback ?? key,
}),
[locale],
);
return <I18nContext.Provider value={value}>{children}</I18nContext.Provider>;
}
export function useI18n(): I18nContextValue {
const ctx = useContext(I18nContext);
if (!ctx) {
throw new Error("useI18n muss innerhalb von <I18nProvider> aufgerufen werden");
}
return ctx;
}
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// Öffentliche Schnittstelle des Pakets @nexarch/shl — Modul-Frontends importieren ausschließlich hierüber,
// nicht aus internen Unterpfaden (SHL-01 Akzeptanzkriterium 2: dokumentiert, versioniert, importierbar statt kopiert).
export { colorTokens, spacing, breakpoints, typography, cssVariables } from "./tokens/tokens";
export type { ColorScheme, ColorTokens } from "./tokens/tokens";
export { ThemeProvider, useTheme, currentColors } from "./theme/ThemeProvider";
export { I18nProvider, useI18n, registerMessages } from "./i18n/i18n";
export type { Locale } from "./i18n/i18n";
export { Shell } from "./components/Shell";
export type { ShellProps, ModuleLink } from "./components/Shell";
export { Dialog } from "./components/Dialog";
export type { DialogProps } from "./components/Dialog";
export { Table } from "./components/Table";
export type { TableProps, TableColumn } from "./components/Table";
export { TextField, SelectField, CheckboxField } from "./components/FormElements";
export type { TextFieldProps, SelectFieldProps, CheckboxFieldProps } from "./components/FormElements";
export { ToastProvider, useToast } from "./components/Toast";
export type { ToastMessage, ToastVariant } from "./components/Toast";
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{
"name": "@nexarch/shl",
"version": "0.1.0",
"private": true,
"description": "NEXARCH UI-Shell & Design-System (Core SHL-01) — gemeinsames Paket für alle Modul-Frontends.",
"main": "index.ts",
"types": "index.ts",
"scripts": {
"test": "vitest run",
"typecheck": "tsc --noEmit"
},
"peerDependencies": {
"react": "^18.3.1",
"react-dom": "^18.3.1"
},
"devDependencies": {
"@testing-library/jest-dom": "^6.4.8",
"@testing-library/react": "^16.0.0",
"@types/react": "18.3.3",
"@types/react-dom": "18.3.0",
"jsdom": "^24.1.1",
"typescript": "5.5.3",
"vitest": "^2.0.0"
}
}
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"use client";
// Zentrales Theming (Hell/Dunkel) — SHL-01 Akzeptanzkriterium 6.
// Einzige Quelle für Hell/Dunkel-Werte; Modul-Frontends schalten nur um, bauen kein eigenes Theming.
import { createContext, useCallback, useContext, useEffect, useMemo, useState } from "react";
import type { ReactNode } from "react";
import { colorTokens, cssVariables, type ColorScheme } from "../tokens/tokens";
const STORAGE_KEY = "nexarch-shl-theme";
interface ThemeContextValue {
scheme: ColorScheme;
setScheme: (scheme: ColorScheme) => void;
toggle: () => void;
}
const ThemeContext = createContext<ThemeContextValue | null>(null);
function readStoredScheme(): ColorScheme | null {
if (typeof window === "undefined") return null;
try {
const stored = window.localStorage.getItem(STORAGE_KEY);
return stored === "light" || stored === "dark" ? stored : null;
} catch {
// localStorage kann in privaten Fenstern/eingeschränkten Kontexten fehlschlagen — kein Absturz, nur kein persistierter Zustand.
return null;
}
}
function systemPrefersDark(): boolean {
if (typeof window === "undefined" || !window.matchMedia) return false;
return window.matchMedia("(prefers-color-scheme: dark)").matches;
}
export function ThemeProvider({ children }: { children: ReactNode }) {
const [scheme, setSchemeState] = useState<ColorScheme>("light");
useEffect(() => {
const stored = readStoredScheme();
setSchemeState(stored ?? (systemPrefersDark() ? "dark" : "light"));
}, []);
const setScheme = useCallback((next: ColorScheme) => {
setSchemeState(next);
try {
window.localStorage.setItem(STORAGE_KEY, next);
} catch {
// Speichern optional — Umschaltung funktioniert auch ohne Persistenz.
}
}, []);
const toggle = useCallback(() => {
setScheme(scheme === "light" ? "dark" : "light");
}, [scheme, setScheme]);
useEffect(() => {
const vars = cssVariables(scheme);
const root = document.documentElement;
for (const [key, value] of Object.entries(vars)) {
root.style.setProperty(key, value);
}
root.dataset.shlTheme = scheme;
}, [scheme]);
const value = useMemo(() => ({ scheme, setScheme, toggle }), [scheme, setScheme, toggle]);
return <ThemeContext.Provider value={value}>{children}</ThemeContext.Provider>;
}
export function useTheme(): ThemeContextValue {
const ctx = useContext(ThemeContext);
if (!ctx) {
throw new Error("useTheme muss innerhalb von <ThemeProvider> aufgerufen werden");
}
return ctx;
}
export function currentColors(scheme: ColorScheme) {
return colorTokens[scheme];
}
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// Design-Tokens: einzige Quelle für Farbe, Abstand, Typografie im gesamten Frontend-Verbund.
// Modul-Frontends importieren diese Tokens, überschreiben sie nicht lokal (SHL-01 Akzeptanzkriterium 3).
// Kontrastwerte sind gegen WCAG 2.1 AA geprüft (Akzeptanzkriterium 1/4): mindestens 4.5:1 für Fließtext.
export type ColorScheme = "light" | "dark";
export interface ColorTokens {
background: string;
surface: string;
surfaceRaised: string;
border: string;
textPrimary: string;
textSecondary: string;
accent: string;
accentContrast: string;
danger: string;
dangerContrast: string;
success: string;
warning: string;
focusRing: string;
}
// Kontrastwerte geprüft: textPrimary auf background/surface >= 7:1, textSecondary >= 4.5:1,
// accentContrast auf accent >= 4.5:1 (WCAG AA, siehe SHL-01 Prüfung 3).
export const colorTokens: Record<ColorScheme, ColorTokens> = {
light: {
background: "#FFFFFF",
surface: "#F5F6F8",
surfaceRaised: "#FFFFFF",
border: "#D7DBE0",
textPrimary: "#14181F",
textSecondary: "#4B5563",
accent: "#1D4ED8",
accentContrast: "#FFFFFF",
danger: "#B91C1C",
dangerContrast: "#FFFFFF",
success: "#15803D",
warning: "#B45309",
focusRing: "#1D4ED8",
},
dark: {
background: "#0F1115",
surface: "#181B21",
surfaceRaised: "#20242C",
border: "#333944",
textPrimary: "#F2F4F7",
textSecondary: "#B4BAC4",
accent: "#5B8DEF",
accentContrast: "#0F1115",
danger: "#F87171",
dangerContrast: "#0F1115",
success: "#4ADE80",
warning: "#FBBF24",
focusRing: "#5B8DEF",
},
};
export const spacing = {
xs: "4px",
sm: "8px",
md: "16px",
lg: "24px",
xl: "32px",
xxl: "48px",
} as const;
export const breakpoints = {
mobile: "0px",
tablet: "768px",
desktop: "1200px",
} as const;
export const typography = {
fontFamily: "'Inter', 'Segoe UI', system-ui, sans-serif",
fontFamilyMono: "'JetBrains Mono', ui-monospace, monospace",
sizeSm: "13px",
sizeMd: "15px",
sizeLg: "18px",
sizeXl: "24px",
lineHeight: 1.5,
weightRegular: 400,
weightMedium: 500,
weightBold: 600,
} as const;
export function cssVariables(scheme: ColorScheme): Record<string, string> {
const c = colorTokens[scheme];
const vars: Record<string, string> = {};
for (const [key, value] of Object.entries(c)) {
vars[`--shl-color-${key.replace(/([A-Z])/g, "-$1").toLowerCase()}`] = value;
}
for (const [key, value] of Object.entries(spacing)) {
vars[`--shl-spacing-${key}`] = value;
}
return vars;
}
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{
"compilerOptions": {
"target": "ES2020",
"lib": ["dom", "dom.iterable", "esnext"],
"jsx": "react-jsx",
"module": "ESNext",
"moduleResolution": "bundler",
"strict": true,
"declaration": true,
"esModuleInterop": true,
"skipLibCheck": true,
"forceConsistentCasingInFileNames": true,
"noUnusedLocals": true,
"noUnusedParameters": true
},
"include": ["**/*.ts", "**/*.tsx"],
"exclude": ["node_modules"]
}
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import { defineConfig } from "vitest/config";
export default defineConfig({
test: {
environment: "jsdom",
setupFiles: ["./vitest.setup.ts"],
},
});
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import "@testing-library/jest-dom/vitest";
import { afterEach } from "vitest";
import { cleanup } from "@testing-library/react";
// Ohne explizites Cleanup bleiben zwischen den it()-Blöcken gerenderte Dialoge im DOM stehen
// (mehrere <html>/<body>-Bäume stapeln sich), wodurch getByRole() mehrere Treffer statt einen findet.
afterEach(() => {
cleanup();
});