feat: Complete Stage 2 frontend refactor

- Removed deprecated fields from Content and Task models, including entity_type, sync_status, and cluster_role.
- Updated Content model to include new fields: content_type, content_structure, taxonomy_terms, source, external_id, and cluster_id.
- Refactored Writer module components (Content, ContentView, Dashboard, Tasks) to align with new schema.
- Enhanced Dashboard metrics and removed unused filters.
- Implemented ClusterDetail page to display cluster information and associated content.
- Updated API service interfaces to reflect changes in data structure.
- Adjusted sorting and filtering logic across various components to accommodate new field names and types.
- Improved user experience by providing loading states and error handling in data fetching.

frontend/src/services/api.ts

@@ -777,9 +777,7 @@ export interface ContentIdea {
   estimated_word_count: number;
   created_at: string;
   updated_at: string;
-  // Stage 3: Metadata fields
-  site_entity_type?: string | null;
-  cluster_role?: string | null;
+  // Taxonomy fields
   taxonomy_id?: number | null;
   taxonomy_name?: string | null;
 }
@@ -892,7 +890,6 @@ export interface TasksFilters {
   cluster_id?: string;
   content_type?: string;
   content_structure?: string;
-  entity_type?: string; // Stage 3: Entity type filter
   page?: number;
   page_size?: number;
   ordering?: string;
@@ -933,11 +930,10 @@ export interface Task {
   post_url?: string | null;
   created_at: string;
   updated_at: string;
-  // Stage 3: Metadata fields
-  entity_type?: string | null;
+  // Taxonomy fields
+  taxonomy_term_id?: number | null;
   taxonomy_id?: number | null;
   taxonomy_name?: string | null;
-  cluster_role?: string | null;
 }
 
 export interface TaskCreateData {
@@ -1985,7 +1981,10 @@ export async function deleteAuthorProfile(id: number): Promise<void> {
 export interface ContentFilters {
   search?: string;
   status?: string;
-  task_id?: number;
+  content_type?: string;
+  content_structure?: string;
+  source?: string;
+  cluster_id?: number;
   page?: number;
   page_size?: number;
   ordering?: string;
@@ -1995,34 +1994,31 @@ export interface ContentFilters {
 
 export interface Content {
   id: number;
-  task_id: number;
-  task_title?: string | null;
-  sector_name?: string | null;
-  title?: string | null;
-  meta_title?: string | null;
-  meta_description?: string | null;
-  primary_keyword?: string | null;
-  secondary_keywords?: string[];
-  tags?: string[];
-  categories?: string[];
-  status: string;
-  html_content: string;
-  word_count: number;
-  metadata: Record<string, any>;
-  generated_at: string;
+  // Core fields
+  title: string;
+  content_html: string;
+  content_type: string;
+  content_structure: string;
+  status: 'draft' | 'published';
+  source: 'igny8' | 'wordpress';
+  // Relations
+  cluster_id: number;
+  cluster_name?: string | null;
+  taxonomy_terms?: Array<{
+    id: number;
+    name: string;
+    taxonomy_type: string;
+  }>;
+  // WordPress integration
+  external_id?: string | null;
+  external_url?: string | null;
+  // Timestamps
+  created_at: string;
   updated_at: string;
+  // Image support
   has_image_prompts?: boolean;
   has_generated_images?: boolean;
-  // Stage 3: Metadata fields
-  entity_type?: string | null;
-  cluster_name?: string | null;
-  cluster_id?: number | null;
-  taxonomy_name?: string | null;
-  taxonomy_id?: number | null;
-  cluster_role?: string | null;
   // Additional fields used in Linker/Optimizer
-  source?: string;
-  sync_status?: string;
   internal_links?: Array<{ anchor_text: string; target_content_id: number }>;
   linker_version?: number;
   optimization_scores?: {
@@ -2030,10 +2026,6 @@ export interface Content {
     readability_score: number;
     engagement_score: number;
     overall_score: number;
-    metadata_completeness_score?: number;
-    has_cluster_mapping?: boolean;
-    has_taxonomy_mapping?: boolean;
-    has_attributes?: boolean;
   };
 }
 
@@ -2098,8 +2090,8 @@ export interface ContentValidationResult {
     message: string;
   }>;
   metadata: {
-    has_entity_type: boolean;
-    entity_type: string | null;
+    has_content_type: boolean;
+    content_type: string | null;
     has_cluster_mapping: boolean;
     has_taxonomy_mapping: boolean;
   };