Implement Stage 3: Enhance content generation and metadata features

- Updated AI prompts to include metadata context, cluster roles, and product attributes for improved content generation.
- Enhanced GenerateContentFunction to incorporate taxonomy and keyword objects for richer context.
- Introduced new metadata fields in frontend components for better content organization and filtering.
- Added cluster match, taxonomy match, and relevance score to LinkResults for improved link management.
- Implemented metadata completeness scoring and recommended actions in AnalysisPreview for better content optimization.
- Updated API services to support new metadata structures and site progress tracking.

frontend/src/pages/Writer/Tasks.tsx

@@ -48,6 +48,7 @@ export default function Tasks() {
   const [structureFilter, setStructureFilter] = useState('');
   const [typeFilter, setTypeFilter] = useState('');
   const [sourceFilter, setSourceFilter] = useState('');
+  const [entityTypeFilter, setEntityTypeFilter] = useState(''); // Stage 3: Entity type filter
   const [selectedIds, setSelectedIds] = useState<string[]>([]);
   
   // Pagination state
@@ -143,6 +144,7 @@ export default function Tasks() {
         ...(clusterFilter && { cluster_id: clusterFilter }),
         ...(structureFilter && { content_structure: structureFilter }),
         ...(typeFilter && { content_type: typeFilter }),
+        ...(entityTypeFilter && { entity_type: entityTypeFilter }), // Stage 3: Entity type filter
         page: currentPage,
         page_size: pageSize,
         ordering,
@@ -163,7 +165,7 @@ export default function Tasks() {
       setShowContent(true);
       setLoading(false);
     }
-  }, [currentPage, statusFilter, clusterFilter, structureFilter, typeFilter, sortBy, sortDirection, searchTerm, activeSector, pageSize]);
+  }, [currentPage, statusFilter, clusterFilter, structureFilter, typeFilter, entityTypeFilter, sortBy, sortDirection, searchTerm, activeSector, pageSize]);
 
   useEffect(() => {
     loadTasks();
@@ -512,7 +514,7 @@ export default function Tasks() {
       setTypeFilter,
       setCurrentPage,
     });
-  }, [clusters, activeSector, formData, searchTerm, statusFilter, clusterFilter, structureFilter, typeFilter, sourceFilter]);
+  }, [clusters, activeSector, formData, searchTerm, statusFilter, clusterFilter, structureFilter, typeFilter, sourceFilter, entityTypeFilter]);
 
   // Calculate header metrics
   const headerMetrics = useMemo(() => {
@@ -576,6 +578,7 @@ export default function Tasks() {
             content_structure: structureFilter,
             content_type: typeFilter,
             source: sourceFilter,
+            entity_type: entityTypeFilter, // Stage 3: Entity type filter
           }}
           onFilterChange={(key, value) => {
             const stringValue = value === null || value === undefined ? '' : String(value);
@@ -591,6 +594,8 @@ export default function Tasks() {
               setTypeFilter(stringValue);
             } else if (key === 'source') {
               setSourceFilter(stringValue);
+            } else if (key === 'entity_type') { // Stage 3: Entity type filter
+              setEntityTypeFilter(stringValue);
             }
             setCurrentPage(1);
           }}