Capacity exhaustion now terminal; caretaker triage expanded

What's Changed

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

Full Changelog: https://github.com/google-gemini/gemini-cli/compare/v0.56.0-nightly.20260807.gd5c9a97dc...v0.56.0-nightly.20260808.gcf22ac7e8