fix(resource_dashboard): force recreate grafana_dashboard if uid changes

internal/resources/grafana/resource_dashboard.go

@@ -38,6 +38,16 @@ Manages Grafana dashboards.
 			StateContext: schema.ImportStatePassthroughContext,
 		},
 
+		CustomizeDiff: func(ctx context.Context, d *schema.ResourceDiff, meta interface{}) error {
+			oldVal, newVal := d.GetChange("config_json")
+			oldUID := extractUID(oldVal.(string))
+			newUID := extractUID(newVal.(string))
+			if oldUID != newUID {
+				d.ForceNew("config_json")
+			}
+			return nil
+		},
+
 		Schema: map[string]*schema.Schema{
 			"org_id": orgIDAttribute(),
 			"uid": {
@@ -301,3 +311,14 @@ func NormalizeDashboardConfigJSON(config interface{}) string {
 		return string(j)
 	}
 }
+
+func extractUID(jsonStr string) string {
+	var parsed map[string]interface{}
+	if err := json.Unmarshal([]byte(jsonStr), &parsed); err != nil {
+		return ""
+	}
+	if uid, ok := parsed["uid"].(string); ok {
+		return uid
+	}
+	return ""
+}