style [no ci]

Author: stopsopa

.agent/skills/coding-style/SKILL.md

@@ -1,9 +1,27 @@
 ---
 name: coding-style
-description: Coding style for every case when coding. Use when coding.
+description: General coding style for this project
 ---
 
+# Overview
+
 This project is deployed in static fashion.
 Also this project is deliberately structured to support standalone html files representing pages.
 
 So whatever you do always do style in it's own <style> tag in the same html file.
+
+# Error messages
+
+Preffer messages
+
+```ts
+
+throw new Error(`${this module name.ts} error: ${errorMessage}`);
+
+// instead of
+
+throw new Error(`${errorMessage}`);
+
+```
+
+... make sure each error clearly states it's origin