Approved proposal: #2879
Pattern: prompt_improvement
Evidence: PRs #1566, #1567, #1569, #1481 referenced non-existent
Session fields (automation_profile, list_messages, etc.), causing
5 Pyright type errors and runtime crashes on session CLI commands.
Fix: Add domain model verification step to all three implementer
agents (sonnet, codex, opus) requiring them to read actual class
definitions before referencing fields/methods.
ISSUES CLOSED: #2879