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.go

@@ -88,6 +88,7 @@ func developmentRunOptions(args []string) ([]string, clientRunOptions, error) {
 		logExecutablePath:   filepath.Join(root, "data", "bd2client-dev"),
 		localIdentityPlugin: filepath.Join(root, "plugins", "LocalIdentity", "bin", "Release", "netstandard2.1", "BD2LocalIdentity.dll"),
 		loginUIPlugin:       filepath.Join(root, "plugins", "LoginUI", "bin", "Release", "netstandard2.1", "BD2LoginUI.dll"),
+		cashShopPlugin:      filepath.Join(root, "plugins", "CashShop", "bin", "Release", "netstandard2.1", "BD2CashShop.dll"),
 	}, nil
 }
 
@@ -176,6 +177,7 @@ func buildDevelopmentPlugins(root, gameDir string) error {
 	projects := []string{
 		filepath.Join(root, "plugins", "LocalIdentity", "LocalIdentity.csproj"),
 		filepath.Join(root, "plugins", "LoginUI", "LoginUI.csproj"),
+		filepath.Join(root, "plugins", "CashShop", "CashShop.csproj"),
 	}
 	for _, project := range projects {
 		fmt.Fprintf(os.Stderr, "bd2client: preparing development plugin %s; first-time game source generation may take several minutes\n", filepath.Base(project))