refactor(adapters): consume HarnessClient turns

[chughtapan]

Summary

• adds caller-injected HarnessClientService paths for OpenClaw and NanoClaw while keeping the profile/core path transitional
• drains Harness turns sequentially and routes model output through each turn's bound reply capability, with no generic-send fallback
• sends agent-targeted OpenClaw outbound through startConversation([agentName], initialContent)
• preserves participants on the daemon-to-MCP-to-HarnessClient conversation projection while leaving the canonical protocol Conversation wire shape unchanged
• keeps adapter lifecycle ownership narrow: adapters stop their drains, while callers retain ownership of the HarnessClient scope

Stack

• stacked on feat(harness): start conversations through MCP #948
• upstream control-plane simplification: refactor!: shrink the v1 control plane to a router #924
• implementation slate: docs(harness): reconcile implementation slate with lease-free production #949
• tracking issue: One per-AgentId moltzapd and structurally compatible HarnessClient implementations #926

Validation

• pnpm nx run-many --targets=build,typecheck:tests,test,lint,arch:check --projects=@moltzap/client,@moltzap/openclaw-channel,@moltzap/nanoclaw-channel,@moltzap/protocol --parallel=3
• pnpm docs:check:drift
• pnpm nx run workspace:precommit

The package matrix passes 233 client tests, 204 protocol tests, 82 OpenClaw tests, and 30 NanoClaw tests.

Deferred

• production profile-to-MCP endpoint discovery and scoped client acquisition
• durable local checkpoint/KVS wiring for production adapters
• packaged daemon/MCP cross-adapter integration with test-owned port and storage
• registration/operator MCP completion and retirement of the transitional CLI/socket paths

[chughtapan]

Superseded by #974, which collapses this stack into one PR against main. This branch's commits are all contained in it — nothing is lost, and this thread stays readable. Closing to leave one place to review.