docs: make issue read command executable

Author: elkaix

docs/agents/issue-tracker.md

@@ -5,7 +5,7 @@ Issues and specs for this public repo live as GitHub issues. Use the `gh` CLI fo
 ## Conventions
 
 - **Create an issue**: `gh issue create --title "..." --body "..."`. Use a heredoc for multi-line bodies.
-- **Read an issue**: `gh issue view <number> --comments`, filtering comments by `jq` and also fetching labels.
+- **Read an issue**: `gh issue view <number> --json comments,labels --jq '{labels: [.labels[].name], comments: [.comments[].body]}'`.
 - **List issues**: `gh issue list --state open --json number,title,body,labels,comments --jq '[.[] | {number, title, body, labels: [.labels[].name], comments: [.comments[].body]}]'` with appropriate `--label` and `--state` filters.
 - **Comment on an issue**: `gh issue comment <number> --body "..."`
 - **Apply / remove labels**: `gh issue edit <number> --add-label "..."` / `--remove-label "..."`