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Created by pull[bot] (v2.0.0-alpha.4)

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Summary by cubic

Adds a new gh aw view command to replay a run’s unified timeline (agent, tools, gateway, firewall) and makes PR branch updates append‑only with automatic merge‑commit linearization before signed pushes. Also improves logs output for agents, enhances timeline rendering, and tightens threat parsing and Antigravity routing.

• New Features

  • gh aw view <run-id-or-url>: render a streaming-style timeline from artifacts, including assistant messages and reasoning traces (ADR-34835).
  • Logs output: added compact default and --format tsv for token‑efficient agent consumption; skips cancelled/skipped runs; better cross-run insights.
  • Safer PR updates: push_to_pull_request_branch is append‑only; when merge commits are present, auto-squash the range into one commit before signed push. Tool docs and safe_outputs guidance updated. create_pull_request uses the same linearization.
  • Timeline renderer: adds assistant message and reasoning events with clear icons and content snippets.
  • Antigravity: route via gemini target in AWF config; CLI uses --dangerously-skip-permissions.

• Bug Fixes

  • Threat detection parsing: handle Codex stream logs with prefixed JSON lines.
  • Step Name Alignment workflow: stabilize by allowing direct manifest reads and using cache-memory directly.
  • Frontmatter parsing: reduce duplicate scans and correctly track top-level fields while preserving blank lines.
  • Logs JSON: avoid mixed stdout/stderr corruption; hide zero-only columns.

^{Written for commit ccf77c4. Summary will update on new commits. Review in cubic}