feat(web): code-aware field errors + min count validation (#46)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/src/objects/object-form.tsx

@@ -51,6 +51,7 @@ export function ObjectForm({
   onCancel,
   formError,
   fieldErrorKey,
+  fieldErrorCode,
 }: {
   mode: "create" | "edit";
   defaults?: { core: ObjectCore; fields: Record<string, unknown> };
@@ -58,6 +59,7 @@ export function ObjectForm({
   onCancel: () => void;
   formError?: string | null;
   fieldErrorKey?: string | null;
+  fieldErrorCode?: string | null;
 }) {
   const { t } = useTranslation();
   const { default_language } = useConfig();
@@ -80,12 +82,14 @@ export function ObjectForm({
 
   useEffect(() => {
     if (fieldErrorKey) {
-      form.setError(`fields.${fieldErrorKey}` as never, {
-        type: "server",
-        message: t("form.fieldRejected", { field: fieldErrorKey }),
-      });
+      const codeKey = fieldErrorCode ? `form.fieldError.${fieldErrorCode}` : "";
+      const message =
+        fieldErrorCode && t(codeKey) !== codeKey
+          ? t(codeKey)
+          : t("form.fieldRejected", { field: fieldErrorKey });
+      form.setError(`fields.${fieldErrorKey}` as never, { type: "server", message });
     }
-  }, [fieldErrorKey, form, t]);
+  }, [fieldErrorKey, fieldErrorCode, form, t]);
 
   const runSubmit = (createAnother: boolean) =>
     handleSubmit(async (data) => {
@@ -106,7 +110,7 @@ export function ObjectForm({
   const coreField = (
     key: keyof ObjectCore,
     labelKey: string,
-    opts?: { type?: string; required?: boolean },
+    opts?: { type?: string; required?: boolean; min?: number },
   ) => (
     <div className="space-y-1">
       <Label htmlFor={key}>{t(`fieldsLabels.${labelKey}`)}</Label>
@@ -117,14 +121,20 @@ export function ObjectForm({
         {...register(
           `core.${key}` as const,
           opts?.type === "number"
-            ? { valueAsNumber: true, required: opts?.required }
+            ? {
+                valueAsNumber: true,
+                required: opts?.required,
+                ...(opts?.min !== undefined
+                  ? { min: { value: opts.min, message: t("form.minCount") } }
+                  : {}),
+              }
             : { required: opts?.required },
         )}
       />
 
       {errors.core?.[key] && (
         <p role="alert" className="text-xs text-destructive">
-          {t("form.required")}
+          {errors.core[key]?.message || t("form.required")}
         </p>
       )}
     </div>
@@ -149,7 +159,7 @@ export function ObjectForm({
 
       {coreField("object_number", "objectNumber", { required: true })}
       {coreField("object_name", "objectName", { required: true })}
-      {coreField("number_of_objects", "count", { type: "number", required: true })}
+      {coreField("number_of_objects", "count", { type: "number", required: true, min: 1 })}
       {coreField("brief_description", "briefDescription")}
       {coreField("current_location", "currentLocation")}
       {coreField("current_owner", "currentOwner")}