Release v0.56.0-nightly.20260808.gcf22ac7e8

What's Changed

• Reclassifying Capacity Exhaustion as Terminal Error by @luisfelipe-alt in #28716
• feat(caretaker): update Firestore schema with error, and pr_number fields by @chadd28 in #28467
• feat(caretaker-triage): prompt hill-climbing & orchestrator updates by @chadd28 in #28524
• feat(caretaker): add triage Cloud Run job workflow by @chadd28 in #28468
• feat(caretaker-evals): add triage evaluation framework and judge runner by @chadd28 in #28530
• feat(caretaker-evals): add local golden issue collection and firestore sync tools by @chadd28 in #28532
• feat(caretaker): publish workable spec event to ready-for-code Pub/Sub topic by @chadd28 in #28588
• feat(caretaker): add GCP deployment script for caretaker agent services by @chadd28 in #28529
• feat(caretaker-evals): add Cloud Run job entrypoint for eval runner by @chadd28 in #28727
• fix(caretaker): clear lock on NEEDS_HUMAN transition by @chadd28 in #28601
• feat(ingestion): add issue comment handling and re-triage workflow by @chadd28 in #28690

Full Changelog: v0.56.0-nightly.20260807.gd5c9a97dc...v0.56.0-nightly.20260808.gcf22ac7e8