test(openclaw): cover branch routing paths

Add OpenClaw unwrap flow and non-blocking proxy startup

fix(openclaw): normalize engine messages for discord

fix(openclaw): preserve tool call linkage in converted history

refactor(openclaw): DRY up duplicate code across plugin

Remove skipped integration test registration

Harden openclaw plugin proxy handling and metadata

OpenClaw plugin fixes, telemetry fix, cost tracker improvement, tokenBudget support

feat: add OpenClaw ContextEngine plugin (@headroom-ai/openclaw)