refactor(scum): use runtime capability probes

plugins/examples/scum-server-plugin/companion/dispatcher.go

@@ -21,14 +21,13 @@ type SafeAdapter interface {
 	SpawnVehicle(context.Context, map[string]any) (map[string]any, error)
 }
 
-// ServerBoundAdapter lets a versioned adapter prove that it is configured for
+// ServerBoundAdapter lets a runtime adapter prove that it is configured for
 // the same server as the registration which declared handler availability.
 // Generic test adapters do not need this optional assertion.
 type ServerBoundAdapter interface{ ServerBinding() string }
 
 type HandlerAvailability struct {
 	BoundServerID string
-	ServerVersion string
 	Capabilities  map[string]bool
 	Approved      bool
 }
@@ -85,7 +84,7 @@ func (registry *HandlerRegistry) Execute(ctx context.Context, command ClaimedCom
 		return unsupportedResult("unsupported"), nil
 	}
 	handler, exists := registry.handlers[command.CommandType]
-	if !exists || strings.TrimSpace(registry.availability.ServerVersion) == "" {
+	if !exists {
 		return unsupportedResult("unsupported"), nil
 	}
 	payload, err := handler(ctx, command.Payload)
@@ -171,15 +170,14 @@ func validateCommandPayload(commandType string, payload map[string]any) error {
 		}
 		return nil
 	case "game-state.patch":
-		if err := require("playerId", "gameVersion", "expectedStateVersion", "safetyWindow", "reason", "changes"); err != nil {
+		if err := require("playerId", "expectedStateVersion", "safetyWindow", "reason", "changes"); err != nil {
 			return err
 		}
-		if err := noUnknown("playerId", "gameVersion", "expectedStateVersion", "safetyWindow", "reason", "changes"); err != nil {
+		if err := noUnknown("playerId", "expectedStateVersion", "safetyWindow", "reason", "changes"); err != nil {
 			return err
 		}
-		version, ok := payload["gameVersion"].(string)
 		changes, changesOK := payload["changes"].([]any)
-		if !ok || version == "" || !changesOK || len(changes) == 0 || len(changes) > 8 {
+		if !changesOK || len(changes) == 0 || len(changes) > 8 {
 			return fmt.Errorf("state patch payload is invalid")
 		}
 		return nil
@@ -337,7 +335,7 @@ func (dispatcher Dispatcher) Run(ctx context.Context) error {
 
 // Runtime keeps the registered companion alive with bounded heartbeat and
 // polling intervals. It owns no host connection or game credential; handlers
-// are the only route to a version-bound adapter.
+// are the only route to runtime capability adapters.
 type RuntimeGateway interface {
 	CommandGateway
 	Register(context.Context) (Registration, error)