moai-harness-learner

# moai-harness-learner <!-- @MX:NOTE: [AUTO] V3R4 contract — this skill body is preserved unchanged per the harness foundation policy §10 exclusion #10 (text annotation only, no behavioral change). The 4-tier observation/heuristic/rule/auto_update ladder defined here is preserved verbatim under REQ-HRN-FND-011. The orchestrator-only AskUserQuestion contract is asserted by REQ-HRN-FND-015 (cross-reference: .claude/rules/moai/core/agent-common-protocol.md § User Interaction Boundary). The downstream replacement of the frequency-count classifier with an embedding-cluster algorithm is deferred to the harness classifier-upgrade policy. --> Coordinator skill for the Harness Learning Subsystem (the harness-learning policy, superseded by the harness foundation policy as the active V3R4 foundation; this V3R3 SPEC's 4-tier ladder is preserved unchanged). Produces Tier 4 auto-update proposal payloads consumed by the MoAI orchestrator; the orchestrator surfaces them to the user via AskUserQuestion and orchestrates Apply/Rollback flows. Canonical contract: `.claude/rules/moai/core/askuser-protocol.md § Orchestrator-Subagent Boundary` (the constitutional rule/002/003). ## Quick Reference **Role**: Orchestrator-side bridge between CLI (`moai harness`) and AskUserQuestion. **Key constraint** [HARD]: `moai harness apply` returns a JSON payload representing a Tier 4 auto-update proposal. This skill produces the payload; the orchestrator surfaces it via `AskUserQuestion`. The CLI itself do...