Implement CAIKnowledge and CDokumente junction functionality; add API routes, metadata, and localization files

custom/Espo/Custom/Api/JunctionData/GetDokumentes.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace Espo\Custom\Api\JunctionData;
+
+use Espo\Core\Api\Action;
+use Espo\Core\Api\Request;
+use Espo\Core\Api\Response;
+use Espo\Core\Api\ResponseComposer;
+use Espo\Core\Exceptions\BadRequest;
+use Espo\Core\Exceptions\NotFound;
+use Espo\ORM\EntityManager;
+
+/**
+ * GET /api/v1/JunctionData/CAIKnowledge/:knowledgeId/dokumentes
+ * 
+ * Returns all documents linked to a knowledge entry with junction table data
+ */
+class GetDokumentes implements Action
+{
+    public function __construct(
+        private EntityManager $entityManager
+    ) {}
+    
+    public function process(Request $request): Response
+    {
+        $knowledgeId = $request->getRouteParam('knowledgeId');
+        
+        if (!$knowledgeId) {
+            throw new BadRequest('Knowledge ID is required');
+        }
+        
+        // Verify knowledge exists
+        $knowledge = $this->entityManager->getEntityById('CAIKnowledge', $knowledgeId);
+        if (!$knowledge) {
+            throw new NotFound('Knowledge entry not found');
+        }
+        
+        $pdo = $this->entityManager->getPDO();
+        
+        $sql = "
+            SELECT 
+                j.id as junctionId,
+                j.c_a_i_knowledge_id as cAIKnowledgeId,
+                j.c_dokumente_id as cDokumenteId,
+                j.ai_document_id as aiDocumentId,
+                j.syncstatus,
+                j.last_sync as lastSync,
+                d.id as documentId,
+                d.name as documentName,
+                d.blake3hash as blake3hash,
+                d.created_at as documentCreatedAt,
+                d.modified_at as documentModifiedAt
+            FROM c_a_i_knowledge_dokumente j
+            INNER JOIN c_dokumente d ON j.c_dokumente_id = d.id
+            WHERE j.c_a_i_knowledge_id = :knowledgeId
+              AND j.deleted = 0
+              AND d.deleted = 0
+            ORDER BY j.id DESC
+        ";
+        
+        $sth = $pdo->prepare($sql);
+        $sth->execute(['knowledgeId' => $knowledgeId]);
+        
+        $results = $sth->fetchAll(\PDO::FETCH_ASSOC);
+        
+        return ResponseComposer::json([
+            'total' => count($results),
+            'list' => $results
+        ]);
+    }
+}