Address code review feedback - clarify qrErrorCorrection and remove unused import

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

content/docs/references/data/core/Field.mdx

@@ -46,7 +46,7 @@ description: Field Schema Reference
 | **showValue** | `boolean` | optional | Display current value on slider |
 | **marks** | `Record<string, string>` | optional | Custom marks/labels at specific values (e.g., `{0: "Low", 50: "Medium", 100: "High"}`) |
 | **barcodeFormat** | `Enum<'qr' \| 'ean13' \| 'ean8' \| 'code128' \| 'code39' \| 'upca' \| 'upce'>` | optional | Barcode format type |
-| **qrErrorCorrection** | `Enum<'L' \| 'M' \| 'Q' \| 'H'>` | optional | QR code error correction level (L=7%, M=15%, Q=25%, H=30%) |
+| **qrErrorCorrection** | `Enum<'L' \| 'M' \| 'Q' \| 'H'>` | optional | QR code error correction level (L=7%, M=15%, Q=25%, H=30%). Only applicable when barcodeFormat is "qr" |
 | **displayValue** | `boolean` | optional | Display human-readable value below barcode/QR code |
 | **allowScanning** | `boolean` | optional | Enable camera scanning for barcode/QR code input |
 | **hidden** | `boolean` | optional | Hidden from default UI |

examples/modern-fields/src/event.object.ts

@@ -1,5 +1,4 @@
 import { ObjectSchema, Field } from '@objectstack/spec/data';
-import { ValidationRuleSchema } from '@objectstack/spec/data';
 
 /**
  * Event Object - Demonstrates Cross-Field Validation

packages/spec/json-schema/Field.json

@@ -293,7 +293,7 @@
             "Q",
             "H"
           ],
-          "description": "QR code error correction level (L=7%, M=15%, Q=25%, H=30%)"
+          "description": "QR code error correction level (L=7%, M=15%, Q=25%, H=30%). Only applicable when barcodeFormat is \"qr\""
         },
         "displayValue": {
           "type": "boolean",

packages/spec/json-schema/FieldWidgetProps.json

@@ -313,7 +313,7 @@
                 "Q",
                 "H"
               ],
-              "description": "QR code error correction level (L=7%, M=15%, Q=25%, H=30%)"
+              "description": "QR code error correction level (L=7%, M=15%, Q=25%, H=30%). Only applicable when barcodeFormat is \"qr\""
             },
             "displayValue": {
               "type": "boolean",

packages/spec/json-schema/Object.json

@@ -333,7 +333,7 @@
                   "Q",
                   "H"
                 ],
-                "description": "QR code error correction level (L=7%, M=15%, Q=25%, H=30%)"
+                "description": "QR code error correction level (L=7%, M=15%, Q=25%, H=30%). Only applicable when barcodeFormat is \"qr\""
               },
               "displayValue": {
                 "type": "boolean",

packages/spec/src/data/field.zod.ts

@@ -145,8 +145,10 @@ export const FieldSchema = z.object({
   marks: z.record(z.string()).optional().describe('Custom marks/labels at specific values (e.g., {0: "Low", 50: "Medium", 100: "High"})'),
 
   // QR Code / Barcode field config
+  // Note: qrErrorCorrection is only applicable when barcodeFormat='qr'
+  // Runtime validation should enforce this constraint
   barcodeFormat: z.enum(['qr', 'ean13', 'ean8', 'code128', 'code39', 'upca', 'upce']).optional().describe('Barcode format type'),
-  qrErrorCorrection: z.enum(['L', 'M', 'Q', 'H']).optional().describe('QR code error correction level (L=7%, M=15%, Q=25%, H=30%)'),
+  qrErrorCorrection: z.enum(['L', 'M', 'Q', 'H']).optional().describe('QR code error correction level (L=7%, M=15%, Q=25%, H=30%). Only applicable when barcodeFormat is "qr"'),
   displayValue: z.boolean().optional().describe('Display human-readable value below barcode/QR code'),
   allowScanning: z.boolean().optional().describe('Enable camera scanning for barcode/QR code input'),