Keep realtime OpenClaw consults pending

[rogerchappel]

Summary

• submit an interim OpenClaw realtime tool result with willContinue before waiting for long consults
• return the completed OpenClaw answer from the relay route as finalText
• suppress stale provider assistant transcripts while a realtime tool call is pending, then persist the actual OpenClaw final text into CrewCMD
• update tests around the interim/final relay sequence

Verification

• pnpm test -- 'src/app/api/runtimes/[id]/talk/realtime/relay/route.test.ts' src/lib/realtime-voice-gateway-relay.test.ts src/lib/realtime-voice-client.test.ts\n- pnpm typecheck\n- git diff --check\n- pre-push: pnpm typecheck && pnpm build\n\n## Notes\nOpenClaw logs showed the VideoGen lookup completed and returned the README summary, but the realtime provider still emitted a stale “no README text” answer. This PR makes CrewCMD trust and persist the final OpenClaw tool result instead of that stale provider transcript. Local OpenClaw logs still show a separate Codex harness fallback issue: listRegisteredPluginAgentPromptGuidance is not a function.