phase a audit

src/Vector/VectorIndexBuilder.php

@@ -49,9 +49,8 @@ final class VectorIndexBuilder
         // --------------------------------------------
         // 🔵 FALL: NDJSON ist leer → kein Vector Index
         // --------------------------------------------
-        if (filesize($this->indexNdjsonPath) === 0) {
+        if (!is_file($this->indexNdjsonPath) || filesize($this->indexNdjsonPath) === 0) {
 
-            // Alten Index entfernen
             @unlink($this->vectorIndexPath);
             @unlink($this->vectorMetaPath);
 
@@ -63,7 +62,7 @@ final class VectorIndexBuilder
                 );
             }
 
-            return; // WICHTIG: kein Python, kein tmp, kein Fehler
+            return;
         }
 
         // --------------------------------------------
@@ -79,7 +78,6 @@ final class VectorIndexBuilder
 
         $tmpVectorIndexPath = $this->vectorIndexPath . '.tmp';
 
-        // Clean leftovers
         @unlink($tmpVectorIndexPath);
         @unlink($this->vectorMetaPath);
 
@@ -108,11 +106,15 @@ final class VectorIndexBuilder
     private function assertPreconditions(): void
     {
         if (!is_file($this->scriptPath)) {
-            throw new \RuntimeException('vector_ingest.py not found at: ' . $this->scriptPath);
+            throw new \RuntimeException(
+                'Vector build script not found at: ' . $this->scriptPath
+            );
         }
 
         if (!is_file($this->indexNdjsonPath)) {
-            throw new \RuntimeException('index.ndjson not found at: ' . $this->indexNdjsonPath);
+            throw new \RuntimeException(
+                'index.ndjson not found at: ' . $this->indexNdjsonPath
+            );
         }
     }
 
@@ -195,4 +197,4 @@ final class VectorIndexBuilder
             @file_put_contents($logPath, "=== VectorIndexBuilder OK ===\n", FILE_APPEND);
         }
     }
-}
+}