Add legal pages, ToS acceptance, and alpha banner

- Journal: Impressum (§5 TMG), Terms of Service, GDPR privacy page
- Registration flow: required ToS checkbox, termsAcceptedAt persisted
- Alpha banner on Journal (always visible); alpha badge on Planner hero
- Footer with legal links + GitHub on both apps
- Reduce PII: sendDefaultPii=false, Sentry init only after login (Journal)
- Drop Sentry from Planner (no login, no consent possible)
- Drop localStorage caching from i18n client detection
- Sync SSR i18n resources each request so locale edits HMR without restart

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/journal/app/lib/auth.server.ts

@@ -76,6 +76,7 @@ export async function finishRegistration(
     email,
     username,
     domain,
+    termsAcceptedAt: new Date(),
   });
 
   await db.insert(credentials).values({
@@ -158,7 +159,7 @@ export async function registerWithMagicLink(email: string, username: string): Pr
   const userId = randomUUID();
   const domain = process.env.DOMAIN ?? "localhost";
 
-  await db.insert(users).values({ id: userId, email, username, domain });
+  await db.insert(users).values({ id: userId, email, username, domain, termsAcceptedAt: new Date() });
 
   // Create magic token for verification
   const token = randomBytes(32).toString("base64url");

apps/journal/app/lib/operator.ts

@@ -0,0 +1,20 @@
+/**
+ * Operator details for the Impressum (§5 TMG / §18 MStV).
+ *
+ * Required by German law. Address must be a reachable physical address.
+ * Email must be a direct contact (no forms-only policy).
+ */
+export const operator = {
+  name: "Ullrich Schäfer",
+  address: {
+    street: "Mehringdamm 87",
+    postalCode: "10965",
+    city: "Berlin",
+    country: "Germany",
+  },
+  email: "legal@trails.cool",
+  // Responsible for content per §18 Abs. 2 MStV
+  responsiblePerson: "Ullrich Schäfer",
+} as const;
+
+export type Operator = typeof operator;

apps/journal/app/lib/sentry.client.ts

@@ -0,0 +1,30 @@
+import * as Sentry from "@sentry/react";
+import { useEffect } from "react";
+import { useLocation, useNavigationType, createRoutesFromChildren, matchRoutes } from "react-router";
+
+let initialized = false;
+
+export function initSentryClient() {
+  if (initialized) return;
+  initialized = true;
+
+  const sentryEnvironment = import.meta.env.VITE_SENTRY_ENVIRONMENT ??
+    (import.meta.env.PROD ? "production" : "development");
+
+  Sentry.init({
+    dsn: "https://a32ffcc575d34be072e91b20f247eeee@o4509530546634752.ingest.de.sentry.io/4509530555547728",
+    integrations: [
+      Sentry.reactRouterV7BrowserTracingIntegration({
+        useEffect,
+        useLocation,
+        useNavigationType,
+        createRoutesFromChildren,
+        matchRoutes,
+      }),
+    ],
+    environment: sentryEnvironment,
+    tracesSampleRate: sentryEnvironment === "ci" ? 0 : 1.0,
+    enabled: import.meta.env.PROD && sentryEnvironment !== "ci",
+    sendDefaultPii: false,
+  });
+}