fix(init): use valid placeholder URLs in dry-run mode

The server validates DSN and URL fields with z.string().url().
The previous placeholders "(dry-run)" failed Zod validation,
breaking dry-run after the create-sentry-project step.

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

Author: betegon

src/lib/init/local-ops.ts

@@ -878,8 +878,8 @@ async function createSentryProject(
         orgSlug: options.org ?? "(dry-run)",
         projectSlug: slug,
         projectId: "(dry-run)",
-        dsn: "(dry-run)",
-        url: "(dry-run)",
+        dsn: "https://key@o0.ingest.sentry.io/0",
+        url: "https://sentry.io/dry-run",
       },
     };
   }