feat(workflows): enhance script handling and introduce custom step names

- Updated AGENTS.md to include a `name` field for scripts, allowing custom display titles in the editor and graph.
- Enhanced script icon resolution to support `.jpeg` file extensions.
- Modified workflow parsing to accommodate the new `name` property for steps, improving step identification.
- Added new utility functions for handling custom step names and display names.
- Introduced tests to validate the functionality of custom step names in workflow YAML parsing and step labeling.

Co-authored-by: Nasyarobby Putra <nasyarobby@gmail.com>

packages/web/src/components/ScriptIcon.jsx

@@ -5,7 +5,7 @@ export function scriptIconSrc(name) {
   return `/api/scripts/${encodeURIComponent(name)}/icon`;
 }
 
-/** Same-name PNG/JPG next to the script, or a JS document icon. */
+/** Same-name PNG/JPG/JPEG next to the script, or a JS document icon. */
 export function ScriptIcon({ name, hasIcon, className = "size-10" }) {
   const [failed, setFailed] = useState(false);