feat: Implement WordPress publishing and unpublishing actions

- Added conditional visibility for table actions based on content state (published/draft).
- Introduced `publishContent` and `unpublishContent` API functions for handling WordPress integration.
- Updated `Content` component to manage publish/unpublish actions with appropriate error handling and success notifications.
- Refactored `PostEditor` to remove deprecated SEO fields and consolidate taxonomy management.
- Enhanced `TablePageTemplate` to filter row actions based on visibility conditions.
- Updated backend API to support publishing and unpublishing content with proper status updates and external references.

frontend/src/pages/Writer/Content.tsx

@@ -10,6 +10,8 @@ import {
   Content as ContentType,
   ContentFilters,
   generateImagePrompts,
+  publishContent,
+  unpublishContent,
 } from '../../services/api';
 import { optimizerApi } from '../../api/optimizer.api';
 import { useNavigate } from 'react-router';
@@ -162,7 +164,41 @@ export default function Content() {
   const navigate = useNavigate();
 
   const handleRowAction = useCallback(async (action: string, row: ContentType) => {
-    if (action === 'generate_image_prompts') {
+    if (action === 'publish') {
+      try {
+        // Check if already published
+        if (row.external_id) {
+          toast.warning('Content is already published to WordPress');
+          return;
+        }
+        
+        const result = await publishContent(row.id);
+        toast.success(`Content published successfully! View at: ${result.external_url}`);
+        loadContent(); // Reload to show updated external_id
+      } catch (error: any) {
+        toast.error(`Failed to publish content: ${error.message}`);
+      }
+    } else if (action === 'view_on_wordpress') {
+      if (row.external_url) {
+        window.open(row.external_url, '_blank');
+      } else {
+        toast.warning('WordPress URL not available');
+      }
+    } else if (action === 'unpublish') {
+      try {
+        // Check if not published
+        if (!row.external_id) {
+          toast.warning('Content is not currently published');
+          return;
+        }
+        
+        await unpublishContent(row.id);
+        toast.success('Content unpublished successfully');
+        loadContent(); // Reload to show cleared external_id
+      } catch (error: any) {
+        toast.error(`Failed to unpublish content: ${error.message}`);
+      }
+    } else if (action === 'generate_image_prompts') {
       try {
         const result = await generateImagePrompts([row.id]);
         if (result.success) {