fix(memoro): unify error responses, add offline page, align i18n defaults

Error responses:
- Webhook routes now use consistent { success, error } format
- Meeting bot 402 error uses standard format instead of mixed error/message/details

PWA:
- Add /offline page with shared OfflinePage component

i18n:
- Change default locale from 'en' to 'de' (matching all other ManaCore apps)
- Use app-specific localStorage key 'memoro_locale' (was generic 'locale')

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/memoro/apps/server/src/routes/meetings-webhooks.ts

@@ -48,14 +48,14 @@ meetingWebhookRoutes.post('/bot-events', async (c) => {
 	const signature = c.req.header('x-webhook-signature') ?? '';
 
 	if (WEBHOOK_SECRET && !verifySignature(rawBody, signature)) {
-		return c.json({ error: 'Invalid webhook signature' }, 401);
+		return c.json({ success: false, error: 'Invalid webhook signature' }, 401);
 	}
 
 	let payload: WebhookEvent;
 	try {
 		payload = JSON.parse(rawBody) as WebhookEvent;
 	} catch {
-		return c.json({ error: 'Invalid JSON payload' }, 400);
+		return c.json({ success: false, error: 'Invalid JSON payload' }, 400);
 	}
 
 	const key = idempotencyKey(payload);
@@ -116,6 +116,6 @@ meetingWebhookRoutes.post('/bot-events', async (c) => {
 		// Remove from processed set so it can be retried
 		processedEvents.delete(key);
 		console.error('[meetings-webhook] Error processing event:', err);
-		return c.json({ error: 'Failed to process webhook event' }, 500);
+		return c.json({ success: false, error: 'Failed to process webhook event' }, 500);
 	}
 });

apps/memoro/apps/server/src/routes/meetings.test.ts

@@ -127,7 +127,7 @@ describe('POST /api/v1/meetings/bots', () => {
 		expect(res.status).toBe(402);
 
 		const data = await res.json();
-		expect(data.error).toBe('InsufficientCredits');
+		expect(data.error).toContain('Insufficient credits');
 	});
 });
 

apps/memoro/apps/server/src/routes/meetings.ts

@@ -35,12 +35,9 @@ meetingRoutes.post('/bots', async (c) => {
 		return c.json(
 			{
 				success: false,
-				error: 'InsufficientCredits',
-				message: `Not enough credits to start recording. Need at least ${MINIMUM_RECORDING_CREDITS} credits.`,
-				details: {
-					requiredCredits: MINIMUM_RECORDING_CREDITS,
-					availableCredits: creditCheck.availableCredits,
-				},
+				error: `Insufficient credits: need at least ${MINIMUM_RECORDING_CREDITS}`,
+				requiredCredits: MINIMUM_RECORDING_CREDITS,
+				availableCredits: creditCheck.availableCredits,
 			},
 			402
 		);

apps/memoro/apps/web/src/lib/i18n/index.ts

@@ -13,13 +13,13 @@ export const supportedLocales = ['de', 'en', 'fr', 'it', 'es'] as const;
 export type SupportedLocale = (typeof supportedLocales)[number];
 
 // Default locale
-const defaultLocale = 'en';
+const defaultLocale = 'de';
 
 // Get initial locale from browser or localStorage
 function getInitialLocale(): SupportedLocale {
 	if (browser) {
 		// Check localStorage first
-		const stored = localStorage.getItem('locale');
+		const stored = localStorage.getItem('memoro_locale');
 		if (stored && supportedLocales.includes(stored as SupportedLocale)) {
 			return stored as SupportedLocale;
 		}
@@ -46,7 +46,7 @@ export function initI18n() {
 export function setLocale(newLocale: SupportedLocale) {
 	locale.set(newLocale);
 	if (browser) {
-		localStorage.setItem('locale', newLocale);
+		localStorage.setItem('memoro_locale', newLocale);
 	}
 }
 

apps/memoro/apps/web/src/routes/offline/+page.svelte

@@ -0,0 +1,9 @@
+<script lang="ts">
+	import { OfflinePage } from '@manacore/shared-ui';
+</script>
+
+<OfflinePage
+	appName="Memoro"
+	offlineMessage="Deine Memos werden lokal gespeichert und sind offline verfügbar."
+	accentColor="#f8d62b"
+/>