rework from modal to page

backend/src/controllers/issue.controller.ts

@@ -167,6 +167,30 @@ class IssueController {
         return;
       }
 
+      // Log history entries for detected changes
+      const fieldLabels: Record<string, string> = {
+        status: 'Status geändert',
+        prioritaet: 'Priorität geändert',
+        zugewiesen_an: 'Zuweisung geändert',
+        titel: 'Titel geändert',
+        beschreibung: 'Beschreibung geändert',
+        typ_id: 'Typ geändert',
+      };
+      for (const [field, label] of Object.entries(fieldLabels)) {
+        if (field in updateData && updateData[field] !== existing[field]) {
+          const details: Record<string, unknown> = { von: existing[field], zu: updateData[field] };
+          if (field === 'zugewiesen_an') {
+            details.von_name = existing.zugewiesen_an_name || null;
+            details.zu_name = issue.zugewiesen_an_name || null;
+          }
+          if (field === 'status') {
+            details.von_label = existing.status;
+            details.zu_label = issue.status;
+          }
+          issueService.addHistoryEntry(id, label, details, userId);
+        }
+      }
+
       // Handle reopen comment (owner reopen flow)
       if (isOwner && !canChangeStatus && req.body.status === 'offen' && existing.status === 'erledigt' && req.body.kommentar) {
         await issueService.addComment(id, userId, `[Wiedereröffnet] ${req.body.kommentar.trim()}`);
@@ -280,6 +304,21 @@ class IssueController {
 
   // --- Type management ---
 
+  async getHistory(req: Request, res: Response): Promise<void> {
+    const issueId = parseInt(param(req, 'id'), 10);
+    if (isNaN(issueId)) {
+      res.status(400).json({ success: false, message: 'Ungültige ID' });
+      return;
+    }
+    try {
+      const history = await issueService.getHistory(issueId);
+      res.status(200).json({ success: true, data: history });
+    } catch (error) {
+      logger.error('IssueController.getHistory error', { error });
+      res.status(500).json({ success: false, message: 'Historie konnte nicht geladen werden' });
+    }
+  }
+
   async getTypes(_req: Request, res: Response): Promise<void> {
     try {
       const types = await issueService.getTypes();