Overview

Fixes #1505

For context, see discussion in #1481

When the D parameter is lower that the number of permissioned candidates, no candidate has a guaranteed seat in the session committee. This can lead to liveness issues if a small number of nodes are repeatedly selected for multiple seats in the committee - if one of those nodes goes offline, so does the chain.

We should add error logging when D_P < n_P:

• At startup
• On session change

This will alert network operators that there is a configuration issue that needs addressing.

🗹 TODO before merging

• Ready

📌 Submission Checklist

• All commits are signed off (git commit -s) for the DCO
• Changes are backward-compatible (or flagged if breaking)
• Pull request description explains why the change is needed
• Self-reviewed the diff
• I have included a change file, or skipped for this reason:
• If the changes introduce a new feature, I have bumped the node minor version
• Update documentation (if relevant)
• Updated AGENTS.md if build commands, architecture, or workflows changed
• No new todos introduced

🧪 Testing Evidence

Please describe any additional testing aside from CI:

• Additional tests are provided (if possible)

🔱 Fork Strategy

• Node Runtime Update
• Node Client Update
• Other:
• N/A

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