docs(manuals): expand content management instructions

- Rename 'Delete Content' section to 'Archive Content'
- Explain archiving as a "soft delete" method
- Add steps for accessing and managing archived content
- Detail process for restoring archived items
- Introduce permanent deletion option for headlines
- Emphasize safety feature for undoing permanent deletions

Author: fulleni

src/content/docs/web-dashboard/manuals/managing-content.mdx

@@ -60,18 +60,41 @@ Your new content item will be created and will now appear in the data table.
 
 </Steps>
 
-### How to Delete Content
+### How to Archive Content
+
+Archiving content is a "soft delete". It removes an item from the main lists but keeps it in the system for data integrity. This is the standard way to remove content.
 
 <Steps>
 1.  **Find the Content Item**
 
-    Navigate to the correct tab and find the item you wish to delete in the data table.
+    Navigate to the correct tab ("Headlines," "Topics," or "Sources") and find the item you wish to archive in the data table.
+
+2.  **Click the Archive Icon**
+
+    On the far right of the item's row, you will see a set of action icons. Click the **archive** icon.
+
+</Steps>
+
+The item will be immediately moved to the archive.
+
+### Managing Archived Content
+
+The archive pages allow you to review, restore, or permanently delete content.
+
+<Steps>
+1.  **Access the Archive**
+
+    First, select the tab for the content type you're interested in (e.g., "Headlines"). Then, click the **"Archived Items"** icon (looks like a box) in the top right corner of the app bar. This will take you to the archive page for that content type.
+
+2.  **Restore an Item**
+
+    To restore an item, find it in the archived list and click the **restore** icon. The item will be moved back to the main content list with an "active" status.
 
-2.  **Click the Delete Icon**
+3.  **Permanently Delete a Headline**
 
-    On the far right of the item's row, you will see a set of action icons. Click the **trash can** icon to delete the item.
+    *Only headlines can be permanently deleted, and only from the archive page.* This is a final, irreversible action.
 
-3.  **Confirm Deletion**
+    To delete a headline forever, find it in the archived headlines list and click the **delete forever** icon (a trash can).
 
-    A confirmation dialog will appear to prevent accidental deletion. Click "Confirm" to permanently delete the item.
+    For safety, a snackbar will appear for 5 seconds with an **"Undo"** button, giving you a chance to reverse the deletion before it becomes permanent.
 </Steps>