Proposed child issue for jgwill/Miadi#243

Title: Miadi orchestration kit for Copilot sessions with STCKin support

Why:

• extract reusable orchestration assets from this session
• define plugin/agent/skill structure in miadi-orchestration-kit
• land initial stckin support in Miadi
• make future Copilot waves resumable and less prompt-fragile

Suggested checklist:

• scaffold first orchestration kit in miadi-orchestration-kit/copilot/
• optionally scaffold second kit for research/deep-search waves
• add STCKin hook/handler routing in Miadi
• add docs/tests/simulators for STCKin
• document required copilot --plugin-dir + --add-dir launch pattern

Blocker: GitHub auth was unavailable in this Hermes session, so this issue could not be created remotely.

Wave 2 note:

• Initial stckin support now lands locally in /src/Miadi through the STC bot family, STCKIN.md file support, docs, and a local dry-run script.
• A follow-up child issue can still be created later if remote auth becomes available.