fix bugs phase 2 (excel ) , download sample feature

Co-authored-by: Copilot <copilot@github.com>

packages/api/open-api/schema.json

@@ -1700,6 +1700,19 @@
         }
       }
     },
+    "/api/customers/import/sample": {
+      "get": {
+        "tags": [
+          "Customers"
+        ],
+        "summary": "Download customers import sample (xlsx/csv)",
+        "responses": {
+          "200": {
+            "description": "OK"
+          }
+        }
+      }
+    },
     "/api/customers/import": {
       "post": {
         "tags": [
@@ -5122,6 +5135,19 @@
         }
       }
     },
+    "/api/vehicles/import/sample": {
+      "get": {
+        "tags": [
+          "Vehicles"
+        ],
+        "summary": "Download vehicles import sample (xlsx/csv)",
+        "responses": {
+          "200": {
+            "description": "OK"
+          }
+        }
+      }
+    },
     "/api/vehicles/import": {
       "post": {
         "tags": [
@@ -32921,6 +32947,19 @@
         }
       }
     },
+    "/api/parts/import/sample": {
+      "get": {
+        "tags": [
+          "Import Parts"
+        ],
+        "summary": "Download parts import sample (xlsx/csv)",
+        "responses": {
+          "200": {
+            "description": "OK"
+          }
+        }
+      }
+    },
     "/api/parts/import": {
       "post": {
         "tags": [
@@ -35132,6 +35171,19 @@
         }
       }
     },
+    "/api/services/import/sample": {
+      "get": {
+        "tags": [
+          "Import Services"
+        ],
+        "summary": "Download services import sample (xlsx/csv)",
+        "responses": {
+          "200": {
+            "description": "OK"
+          }
+        }
+      }
+    },
     "/api/import-services": {
       "post": {
         "tags": [