feat(all): add hunting and events, commerce and rewards, binary calendars, GameData caching and login diagnostics

Implement hunting AP and progress, event tasks, exchanges, games, stories and actions; connect battle and reward handling.

Add CashShop plugin and installation, server purchases and entitlements, recharge rules and plugin version metadata.

Distribute binary calendars independently; cache GameData in memory and fix single-connection query deadlocks.

Improve automatic login and recovery diagnostics; document configuration and release flows.

go/cmd/bd2client/dev_sdk_integration_test.go

@@ -20,7 +20,7 @@ func TestDevelopmentRunBuildsPluginsWithEmbeddedNames(t *testing.T) {
 	if len(args) != 0 {
 		t.Fatalf("unexpected runtime arguments: %v", args)
 	}
-	for _, path := range []string{options.localIdentityPlugin, options.loginUIPlugin} {
+	for _, path := range []string{options.localIdentityPlugin, options.loginUIPlugin, options.cashShopPlugin} {
 		if !clientDevelopmentFile(path) {
 			t.Fatalf("development plugin output missing: %s", path)
 		}