[codex] ROY-21: how could we continuous to process new tasks/jobs?

[0xroylee]

Linear issue: ROY-21

This PR was created by the PIV Loop workflow.

Includes:

• plan + implement session output
• separate review/testing session

[0xroylee]

PIV loop review for ROY-21

Result: FAIL

Code quality gates all passed (bun run check, bun run typecheck, bun test), but review found a multi-project polling regression in src/workflow.ts: resolveGlobalPollingSettings returns only the first project’s polling settings, so --all-projects now applies one project’s intervalMs, maxCycles, and exitWhenIdle globally. This can stop polling too early/late or sleep at the wrong interval for other projects, which violates per-project isolation expectations in multi-project orchestration.

Bugs were detected and converted to GitHub issues.