feat: show crawled document details and FAQ counts in Captain (#14863)

- Add a document details view that surfaces crawled content, source
metadata, and generated FAQ counts.
- Rename the document card action to open details and show the FAQ count
inline in the list.
- Return `responses_count` from the documents API efficiently and expose
document content in the show payload.
- Update related Captain copy to reflect the new details-oriented flow. 


**Preview**
<img width="1640" height="1596" alt="CleanShot 2026-06-26 at 09 25
15@2x"
src="https://github.com/user-attachments/assets/0c408fae-7d37-422a-8869-ece466292cb1"
/>

---------

Co-authored-by: Muhsin <12408980+muhsin-k@users.noreply.github.com>
Co-authored-by: Sony Mathew <sony@chatwoot.com>
Co-authored-by: Sony Mathew <2040199+sony-mathew@users.noreply.github.com>

app/javascript/shared/helpers/MessageFormatter.js

@@ -104,6 +104,11 @@ class MessageFormatter {
     return this.md.render(updatedMessage);
   }
 
+  disableImageRendering() {
+    this.md.disable(['add-image-sizing']);
+    this.md.renderer.rules.image = () => '';
+  }
+
   get formattedMessage() {
     return this.formatMessage();
   }

app/javascript/shared/helpers/specs/MessageFormatter.spec.js

@@ -68,6 +68,25 @@ describe('#MessageFormatter', () => {
     });
   });
 
+  describe('#disableImageRendering', () => {
+    it('omits nested and reference images with relative URLs', () => {
+      const message = `Before ![nested [alt]](/relative.png)
+
+![reference][logo]
+
+[logo]: /logo.png
+
+After`;
+      const formatter = new MessageFormatter(message);
+
+      formatter.disableImageRendering();
+
+      expect(formatter.formattedMessage).not.toContain('<img');
+      expect(formatter.formattedMessage).toContain('Before');
+      expect(formatter.formattedMessage).toContain('After');
+    });
+  });
+
   describe('tweets', () => {
     it('should return the same string if not tags or @mentions', () => {
       const message = 'Chatwoot is an opensource tool';