fix: use json.Marshal for hx-vals in watchlist templates

web/shared/hx_vals.go

@@ -0,0 +1,11 @@
+package shared
+
+import "encoding/json"
+
+func HxVals(v map[string]interface{}) string {
+	b, err := json.Marshal(v)
+	if err != nil {
+		return "{}"
+	}
+	return string(b)
+}