Add refresh parameter to force regenerate cached discharge content in PDF

Problem:
- PDF shows old cached content with 'Date of Discharge: 2026-06-05'
- Debug page shows correct new format (status header only)
- Discharge content is cached in ipd_discharge table
- PDF generation uses cached content from database
- Fix only affects newly generated content, not cached content

Root Cause:
When discharge is first created, content is generated and saved to DB.
PDF generation flow (show_discharge method):
1. Load cached content from ipd_discharge table
2. Only regenerate if content is empty
3. Apply template and render PDF

So old discharges still have old format cached.

Solution:
Added 'refresh' parameter to show_discharge() method:
- If refresh=1, ignore cached content and regenerate
- Regenerate using buildAutoDischargeContent() (has fix)
- Save new content to database
- Then render PDF

Code Change (line 5900-5913):
Added:
  \ = (int) (\->request->getGet('refresh') ?? 0) === 1;

Changed:
  if (\ || trim(strip_tags(\)) === '') {

Usage:
1. Original URL (uses cache):
   http://localhost:8080/Ipd_discharge/show_discharge/1/1?tpl=1

2. Force refresh (regenerates):
   http://localhost:8080/Ipd_discharge/show_discharge/1/1?tpl=1&refresh=1

3. After first refresh, cache is updated with new format
   Subsequent views will use new cached content

Note:
- preview_discharge_report() already has 'regen=1' parameter
- Same functionality, different parameter name
- Both methods now support force regeneration

For existing discharges:
- Add &refresh=1 to URL once to update cache
- Or recreate discharge from edit page
- Or clear ipd_discharge.content for that IPD ID"

app/Controllers/Ipd_discharge.php

@@ -5901,8 +5901,11 @@ class Ipd_discharge extends BaseController
             return $this->response->setStatusCode(404)->setBody('IPD not found');
         }
 
+        // Check if user wants to force regenerate content (ignoring cache)
+        $forceRegenerate = (int) ($this->request->getGet('refresh') ?? 0) === 1;
+
         $content = $this->getDischargeContent($ipdId);
-        if (trim(strip_tags($content)) === '') {
+        if ($forceRegenerate || trim(strip_tags($content)) === '') {
             $content = $this->buildAutoDischargeContent($ipdId, $panelData);
             if (trim(strip_tags($content)) !== '') {
                 $this->saveDischargeContent($ipdId, $content);