Sync AGENTS.md, CLAUDE.md, and .claude/rules from updated project_rules templates: workplan-first session protocol, legacy terminology footnote, and GET /workplans/ examples.
Registration guidance now prescribes file-first + fix-consistency (C-06) instead of manual create_workplan/create_workstream calls; progress-event examples use workplan_id; legacy field names annotated. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Propagate shared credential-routing section (Codex, Claude, Grok, llm-connect) from state-hub template via scripts/propagate_credential_routing.py.