Add premium My Case MVP

api/discrepancy.php

@@ -3,6 +3,8 @@ declare(strict_types=1);
 
 require_once __DIR__ . '/../includes/bootstrap.php';
 require_once __DIR__ . '/../includes/DiscrepancyAgent.php';
+require_once __DIR__ . '/../includes/CaseResults.php';
+require_once __DIR__ . '/../includes/ToolModels.php';
 
 dbnToolsRequireMethod('POST');
 dbnToolsRequireAuth();
@@ -42,7 +44,7 @@ try {
     }
 
     $language      = dbnToolsNormalizeLanguage($input['language'] ?? 'en');
-    $engine        = (string)($input['engine'] ?? 'azure_mini');
+    $engine        = ToolModels::engineForUser($ftUid, (string)($input['engine'] ?? 'azure_mini'));
     $sliceInput    = $input['slices'] ?? [];
 
     // Extract file A
@@ -111,6 +113,16 @@ try {
         'file_b'   => $fileB['filename'],
     ]);
 
+    // Optional: append the user's case-context as supplementary background to Doc A.
+    $useMyCase = !empty($input['use_my_case']);
+    if ($useMyCase) {
+        $retrievalQuery = mb_substr((string)$fileA['text'], 0, 2000, 'UTF-8');
+        $caseBlock = dbnToolsCaseContext(true, $retrievalQuery, 5);
+        if ($caseBlock !== '') {
+            $fileA['text'] .= "\n\n" . $caseBlock;
+        }
+    }
+
     $result = (new DbnDiscrepancyAgent())->run(
         $fileA,
         $fileB,
@@ -135,6 +147,20 @@ try {
         'deployment'     => $result['trace_metadata']['deployment'] ?? null,
     ]);
 
+    if ($ftUid > 0) {
+        $ownerId = CaseStore::caseResolveClientId($ftUid);
+        $resultId = CaseResults::save($ftUid, $ownerId, 'discrepancy', $input, $result, [
+            'used_case_context' => $useMyCase ? 1 : 0,
+            'case_doc_ids'      => dbnToolsLastCaseDocIds(),
+            'model'             => $result['trace_metadata']['deployment'] ?? $engine,
+            'latency_ms'        => $result['latency_ms'],
+            'credits_charged'   => FreeTier::cost('discrepancy'),
+        ]);
+        if ($resultId > 0) {
+            $result['result_id'] = $resultId;
+        }
+    }
+
     $emit('final', ['result' => $result]);
 
 } catch (DbnToolsHttpException $e) {