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- Server: AccountStore gains admin gating (ADMIN_USERS env), per-user quotaBytes override, listUsers + blobBytes. /api/usage now reports total bytes (backup blob + cloud characters) + an admin flag. Admin routes GET /api/admin/users and POST /api/admin/quota (gated). Quotas are tracked, not yet enforced. +1 test. - Client: Settings cloud panel shows "Your cloud storage", and for an admin a users table with per-user usage + an editable quota (GB). compose sets ADMIN_USERS=nilsb. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>