Nested Sub-Agents in OrchestKit: Adopting CC 2.1.172–2.1.173
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How OrchestKit 8.33.0 adopted Claude Code nested sub-agents (5-level chains) and /release-notes across PRs #2368 and #2370 — Pattern 9, depth registry, delegation docs, and CI guards.
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Nested Sub-Agents in OrchestKit: Adopting CC 2.1.172–2.1.173
How OrchestKit adopted Claude Code's nested sub-agent capability (CC 2.1.172) and the /release-notes command (CC 2.1.173), shipped in OrchestKit 8.33.0 on 2026-06-11 across two PRs. This book documents what changed, why each design call was made, how it was verified, and the reusable patterns that fell out.
Sections:
- Context & Timeline
- PR #2368 — Making Nesting Observable
- PR #2370 — Making Nesting Usable
- Design Decisions & Trade-offs
- Verification
- Reusable Patterns