feat(runtime): bridge runLoop into campaign dispatch

[drewstone]

Summary

• add loopCampaignDispatch so plain agent-eval campaign scenarios can run through runtime runLoop
• forward loop trace, token usage, and cost reporting into campaign context
• refresh canonical/API docs and fix PromptResult status writes against the current sandbox type

Verification

• pnpm vitest run tests/loops/loop-dispatch.test.ts
• pnpm vitest run tests/loops/loop-dispatch.test.ts tests/runtime.test.ts tests/runtime-run.test.ts
• pnpm typecheck
• pnpm build
• pnpm docs:api
• pnpm docs:freshness
• pnpm verify:package
• pnpm lint
• pnpm test
• git diff --check
• git merge-tree --write-tree origin/main HEAD

[tangletools]

✅ Auto-approved drewstone PR — eece84de

This PR was opened by the trusted drewstone account.
The full PR reviewer audit still runs separately and will publish findings if it detects issues.

_{tangletools · auto-approval · reason: drewstone_author · 2026-06-30T01:32:54Z}