refactor: restructure to monorepo with apps and packages directories - Move companion app to apps/companion with electron-vite - Move domain/application/infrastructure to packages/ - Fix ELECTRON_RUN_AS_NODE env var issue for VS Code terminal - Remove legacy esbuild bundler (replaced by electron-vite) - Update workspace scripts in root package.json

packages/domain/services/StepTransitionValidator.ts

@@ -0,0 +1,81 @@
+import { StepId } from '../value-objects/StepId';
+import { SessionState } from '../value-objects/SessionState';
+
+export interface ValidationResult {
+  isValid: boolean;
+  error?: string;
+}
+
+const STEP_DESCRIPTIONS: Record<number, string> = {
+  1: 'Navigate to Hosted Racing page',
+  2: 'Click Create a Race',
+  3: 'Fill Race Information',
+  4: 'Configure Server Details',
+  5: 'Set Admins',
+  6: 'Add Admin (Modal)',
+  7: 'Set Time Limits',
+  8: 'Set Cars',
+  9: 'Add a Car (Modal)',
+  10: 'Set Car Classes',
+  11: 'Set Track',
+  12: 'Add a Track (Modal)',
+  13: 'Configure Track Options',
+  14: 'Set Time of Day',
+  15: 'Configure Weather',
+  16: 'Set Race Options',
+  17: 'Configure Team Driving',
+  18: 'Track Conditions (STOP - Manual Submit Required)',
+};
+
+export class StepTransitionValidator {
+  static canTransition(
+    currentStep: StepId,
+    nextStep: StepId,
+    state: SessionState
+  ): ValidationResult {
+    if (!state.isInProgress()) {
+      return {
+        isValid: false,
+        error: 'Session must be in progress to transition steps',
+      };
+    }
+
+    if (currentStep.equals(nextStep)) {
+      return {
+        isValid: false,
+        error: 'Already at this step',
+      };
+    }
+
+    if (nextStep.value < currentStep.value) {
+      return {
+        isValid: false,
+        error: 'Cannot move backward - steps must progress forward only',
+      };
+    }
+
+    if (nextStep.value !== currentStep.value + 1) {
+      return {
+        isValid: false,
+        error: 'Cannot skip steps - must progress sequentially',
+      };
+    }
+
+    return { isValid: true };
+  }
+
+  static validateModalStepTransition(
+    currentStep: StepId,
+    nextStep: StepId
+  ): ValidationResult {
+    return { isValid: true };
+  }
+
+  static shouldStopAtStep18(nextStep: StepId): boolean {
+    return nextStep.isFinalStep();
+  }
+
+  static getStepDescription(step: StepId): string {
+    return STEP_DESCRIPTIONS[step.value] || `Step ${step.value}`;
+  }
+}