Server-authoritative economy: wire client to server; entry + rewards on hub

Server:
- daily (/api/daily, /api/daily/claim) + shop (/api/shop/buy) + ChargeEntry
- GameRoom (via IServiceScopeFactory) deducts ranked entry at match start and
  applies match rewards at match-over, broadcasting profile + reward over the hub
- tested: daily, shop (owned-guard), ranked entry deduction pushed over hub

Client:
- SignalrService routes profile/coins/plan/daily/shop/match to the server (Bearer);
  onProfile/onReward hub events; guest/offline fall back to local
- session-store syncs profile from hub; game-store serverReward; GameScreen shows
  live ranked reward from hub (no double submit), submits client-run games
- single source of truth in live mode (no economy divergence)

Postgres-ready via config (Provider=postgres); EnsureCreated for now.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

server/src/Hokm.Server/Profiles/ProfileModels.cs

@@ -44,6 +44,10 @@ public class ProfileDto
     public Dictionary<string, int> Achievements { get; set; } = new();
     public List<string> Unlocked { get; set; } = new();
     public long CreatedAt { get; set; }
+
+    // daily reward streak
+    public int DailyDay { get; set; } = 1;
+    public string? DailyLastClaimed { get; set; } // yyyy-MM-dd
 }
 
 public class MatchSummaryDto