Release v0.34.49

What's Changed

• test(mcp): retry the OAuth fixture on fresh ports when it exits at startup by @cpacker in #5511
• feat(workflow): enforce a USD cost budget with maxCostUsd by @sarahwooders in #5299
• feat(server): register the App Server as a computer with --listen by @dream-integration[bot] in #5602
• fix(locks): don't cache a timed-out process start time by @dream-integration[bot] in #5583
• fix(tracing): log external trace upload failures by @dream-integration[bot] in #5574
• feat(subagents): run fresh subagents in ephemeral conversations by @dream-integration[bot] in #5580
• test(listener): bound approval-reconnect restart awaits by @dream-integration[bot] in #5606
• chore: bump version to 0.34.49 by @github-actions[bot] in #5605

Full Changelog: v0.34.48...v0.34.49