docs: Update IssueFeatures.md to document CodeLens functionality

Co-authored-by: joshspicer <23246594+joshspicer@users.noreply.github.com>

Author: Copilot

documentation/IssueFeatures.md

@@ -1,8 +1,15 @@
 We've added some experimental GitHub issue features.
 
-# Code actions
+# Code actions and CodeLens
 
-Wherever there is a `TODO` comment in your code, the **Create Issue from Comment** code action will show. This takes your text selection, and creates a GitHub issue with the selection as a permalink in the issue body. It also inserts the issue number after the `TODO`.
+Wherever there is a `TODO` comment in your code, two actions are available:
+
+1. **CodeLens**: Clickable actions appear directly above the TODO comment line for quick access
+2. **Code actions**: The same actions are available via the lightbulb quick fix menu
+
+Both provide two options:
+- **Create Issue from Comment**: Takes your text selection and creates a GitHub issue with the selection as a permalink in the issue body. It also inserts the issue number after the `TODO`.
+- **Delegate to coding agent**: Starts a Copilot coding agent session to work on the TODO task (when available)
 
 ![Create Issue from Comment](images/createIssueFromComment.gif)