edit-snippet

name	edit-snippet
description	Edit an existing snippet in place — change body or description. If the snippet is currently active in its category, offer to re-run apply-layers so the change takes effect.

Edit Snippet

Steps

1. Resolve $DATA_ROOT. If category and/or name not supplied, list and ask.
2. Open $DATA_ROOT/snippets/<category>/<name>.md. Show the current body and ask what to change — or accept a full replacement body.
3. Write back, preserving frontmatter name, category, and created. Update description if changed. Add/refresh a modified: ISO-8601 field.
4. If config.json.active_layers[<category>] == <name>, ask whether to re-apply now; if yes, delegate to apply-layers (no selection changes, just rebuild the block).