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_command_test.go

@@ -94,6 +94,7 @@ func TestDevelopmentRunOptionsUsesRepositoryFiles(t *testing.T) {
 		"log executable": options.logExecutablePath,
 		"local identity": options.localIdentityPlugin,
 		"login UI":       options.loginUIPlugin,
+		"cash shop":      options.cashShopPlugin,
 	} {
 		if !filepath.IsAbs(path) {
 			t.Errorf("%s path is not absolute: %q", name, path)