Add Claude Code session cost to YouTrack PR comment instructions

[SimonKaran13]

Summary

• Update CLAUDE.md to instruct that the YouTrack comment when creating a PR should also include the Claude Code session cost (obtained via /cost)
• Updated in both the "YouTrack Ticket Workflow" section and "After Completing Work" step 8

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Updates contributor workflow guidance so that YouTrack PR comments include the Claude Code session cost (retrieved via /cost), improving traceability of AI usage costs alongside PR links.

Changes:

• Update “YouTrack Ticket Workflow” instructions to include session cost in the PR-related YouTrack comment.
• Update “After Completing Work” step 8 to include running /cost and adding the cost to the YouTrack comment.

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[catstrike]

I believe /cost command returns the amount of resources spent on the whole session, not the resources spent on the particular ticket, so the cost might be misleading in context of the ticket

[SimonKaran13]

Good point. The intent is to practice session hygiene — one ticket per session — so the session cost closely reflects the cost of that ticket. For tickets that span multiple sessions, the reported cost should be treated as a lower bound. This keeps things simple while still providing useful cost visibility.