feat(project-editor): add ProjectValidator with MVP validation rules

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/features/project-editor/services/project-validator.service.ts

@@ -0,0 +1,70 @@
+import { Injectable } from '@angular/core';
+import { BootstrapConfig } from '../../../shared/models/config';
+
+export interface ProjectValidationIssue {
+  code: string;
+  message: string;
+}
+
+const HEX_COLOR = /^#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$/;
+const HTTP_URL = /^https?:\/\/\S+$/;
+
+@Injectable({ providedIn: 'root' })
+export class ProjectValidator {
+  validate(bootstrap: BootstrapConfig): ProjectValidationIssue[] {
+    return [
+      ...this.brandingIssues(bootstrap),
+      ...this.languageIssues(bootstrap),
+      ...this.urlIssues(bootstrap),
+      ...this.duplicateSlugIssues(bootstrap),
+      ...this.homepageIssues(bootstrap),
+      ...this.navigationIssues(bootstrap),
+      ...this.colorIssues(bootstrap),
+    ];
+  }
+
+  private brandingIssues(bootstrap: BootstrapConfig): ProjectValidationIssue[] {
+    return bootstrap.branding.logoUrl ? [] : [{ code: 'missing-logo', message: 'builder.validationMissingLogo' }];
+  }
+
+  private languageIssues(bootstrap: BootstrapConfig): ProjectValidationIssue[] {
+    return bootstrap.localization.supportedLocales.length > 0 ? [] : [{ code: 'no-languages', message: 'builder.validationNoLanguages' }];
+  }
+
+  private urlIssues(bootstrap: BootstrapConfig): ProjectValidationIssue[] {
+    const url = bootstrap.tenant.websiteBaseUrl;
+    return !url || HTTP_URL.test(url) ? [] : [{ code: 'invalid-url', message: 'builder.validationInvalidUrl' }];
+  }
+
+  private duplicateSlugIssues(bootstrap: BootstrapConfig): ProjectValidationIssue[] {
+    const staticPages = bootstrap.staticPages;
+    if (!staticPages || Array.isArray(staticPages)) {
+      return [];
+    }
+    const slugs = Object.values(staticPages).map(page => page.slug);
+    const hasDuplicates = slugs.some((slug, index) => slugs.indexOf(slug) !== index);
+    return hasDuplicates ? [{ code: 'duplicate-slugs', message: 'builder.validationDuplicateSlugs' }] : [];
+  }
+
+  private homepageIssues(bootstrap: BootstrapConfig): ProjectValidationIssue[] {
+    const homePage = bootstrap.pages.find(page => page.key === 'home' || page.route.path === '/');
+    if (!homePage || homePage.sections.length === 0) {
+      return [{ code: 'empty-homepage', message: 'builder.validationEmptyHomepage' }];
+    }
+    const hasMissingWidgetType = homePage.sections.some(section => section.widgets.some(widget => !widget.type?.trim()));
+    return hasMissingWidgetType ? [{ code: 'missing-widget', message: 'builder.validationMissingWidget' }] : [];
+  }
+
+  private navigationIssues(bootstrap: BootstrapConfig): ProjectValidationIssue[] {
+    const keyOf = (item: { label?: string | Record<string, string>; route?: string }): string =>
+      `${typeof item.label === 'string' ? item.label : JSON.stringify(item.label ?? {})}|${item.route ?? ''}`;
+    const keys = bootstrap.navigation.header.map(keyOf);
+    const hasDuplicates = keys.some((key, index) => keys.indexOf(key) !== index);
+    return hasDuplicates ? [{ code: 'duplicate-nav-links', message: 'builder.validationDuplicateNavLinks' }] : [];
+  }
+
+  private colorIssues(bootstrap: BootstrapConfig): ProjectValidationIssue[] {
+    const invalid = Object.values(bootstrap.theme.palette).some(value => !HEX_COLOR.test(value));
+    return invalid ? [{ code: 'invalid-colors', message: 'builder.validationInvalidColors' }] : [];
+  }
+}