♻️ refactor: unify web app patterns across monorepo

- Rename authStore.svelte.ts to auth.svelte.ts (manacore, manadeck, moodlit)
- Add i18n setup to Finance and Mail apps (DE, EN, FR, ES, IT)
- Add feedback pages using shared component to Finance and Mail
- Create @manacore/shared-api-client package with API client factory
- Create @manacore/shared-vite-config package with SSR config helpers
- Create @manacore/shared-stores package with toast, navigation, theme factories

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

packages/shared-vite-config/package.json

@@ -0,0 +1,18 @@
+{
+	"name": "@manacore/shared-vite-config",
+	"version": "1.0.0",
+	"private": true,
+	"type": "module",
+	"main": "./src/index.ts",
+	"types": "./src/index.ts",
+	"exports": {
+		".": "./src/index.ts"
+	},
+	"scripts": {
+		"type-check": "tsc --noEmit"
+	},
+	"devDependencies": {
+		"typescript": "^5.0.0",
+		"vite": "^6.0.0"
+	}
+}

packages/shared-vite-config/src/index.ts

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+/**
+ * Shared Vite Configuration for ManaCore Web Apps
+ * Provides consistent SSR and optimization settings.
+ */
+
+import type { UserConfig } from 'vite';
+
+/**
+ * Common ManaCore shared packages that need SSR configuration.
+ * These packages contain Svelte 5 runes or other client-side state.
+ */
+export const MANACORE_SHARED_PACKAGES = [
+	'@manacore/shared-icons',
+	'@manacore/shared-ui',
+	'@manacore/shared-tailwind',
+	'@manacore/shared-theme',
+	'@manacore/shared-theme-ui',
+	'@manacore/shared-feedback-ui',
+	'@manacore/shared-feedback-service',
+	'@manacore/shared-feedback-types',
+	'@manacore/shared-auth',
+	'@manacore/shared-auth-ui',
+	'@manacore/shared-branding',
+	'@manacore/shared-subscription-ui',
+	'@manacore/shared-profile-ui',
+	'@manacore/shared-i18n',
+	'@manacore/shared-api-client',
+] as const;
+
+export interface ViteConfigOptions {
+	/** Server port */
+	port: number;
+	/** Additional packages to include in noExternal (e.g., app-specific shared packages) */
+	additionalPackages?: string[];
+	/** Additional packages to exclude from optimization */
+	additionalExcludes?: string[];
+	/** Override default shared packages (if you need a subset) */
+	sharedPackages?: string[];
+}
+
+/**
+ * Get the SSR noExternal configuration for ManaCore apps.
+ */
+export function getSsrNoExternal(additionalPackages: string[] = []): string[] {
+	return [...MANACORE_SHARED_PACKAGES, ...additionalPackages];
+}
+
+/**
+ * Get the optimizeDeps exclude configuration for ManaCore apps.
+ */
+export function getOptimizeDepsExclude(additionalExcludes: string[] = []): string[] {
+	return [...MANACORE_SHARED_PACKAGES, ...additionalExcludes];
+}
+
+/**
+ * Create a base Vite configuration for ManaCore SvelteKit apps.
+ * Merge this with your app-specific configuration.
+ */
+export function createViteConfig(options: ViteConfigOptions): Partial<UserConfig> {
+	const { port, additionalPackages = [], additionalExcludes = [] } = options;
+
+	const packages = options.sharedPackages || [...MANACORE_SHARED_PACKAGES];
+	const noExternal = [...packages, ...additionalPackages];
+	const exclude = [...packages, ...additionalExcludes];
+
+	return {
+		server: {
+			port,
+			strictPort: true,
+		},
+		ssr: {
+			noExternal,
+		},
+		optimizeDeps: {
+			exclude,
+		},
+	};
+}
+
+/**
+ * Merge base config with app-specific plugins and settings.
+ * Use this in your vite.config.ts:
+ *
+ * @example
+ * ```ts
+ * import { sveltekit } from '@sveltejs/kit/vite';
+ * import tailwindcss from '@tailwindcss/vite';
+ * import { defineConfig } from 'vite';
+ * import { createViteConfig, mergeViteConfig } from '@manacore/shared-vite-config';
+ *
+ * const baseConfig = createViteConfig({
+ *   port: 5174,
+ *   additionalPackages: ['@chat/shared'],
+ * });
+ *
+ * export default defineConfig(mergeViteConfig(baseConfig, {
+ *   plugins: [tailwindcss(), sveltekit()],
+ * }));
+ * ```
+ */
+export function mergeViteConfig(
+	baseConfig: Partial<UserConfig>,
+	appConfig: Partial<UserConfig>
+): UserConfig {
+	return {
+		...baseConfig,
+		...appConfig,
+		server: {
+			...baseConfig.server,
+			...appConfig.server,
+		},
+		ssr: {
+			...baseConfig.ssr,
+			...appConfig.ssr,
+			noExternal: [
+				...((baseConfig.ssr?.noExternal as string[]) || []),
+				...((appConfig.ssr?.noExternal as string[]) || []),
+			],
+		},
+		optimizeDeps: {
+			...baseConfig.optimizeDeps,
+			...appConfig.optimizeDeps,
+			exclude: [
+				...(baseConfig.optimizeDeps?.exclude || []),
+				...(appConfig.optimizeDeps?.exclude || []),
+			],
+		},
+		plugins: [...(baseConfig.plugins || []), ...(appConfig.plugins || [])],
+	};
+}

packages/shared-vite-config/tsconfig.json

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+{
+	"compilerOptions": {
+		"target": "ES2022",
+		"module": "ESNext",
+		"moduleResolution": "bundler",
+		"strict": true,
+		"esModuleInterop": true,
+		"skipLibCheck": true,
+		"declaration": true,
+		"declarationMap": true,
+		"outDir": "./dist",
+		"rootDir": "./src"
+	},
+	"include": ["src/**/*"],
+	"exclude": ["node_modules", "dist"]
+}