Merge branch 'main' into copilot/aw-fix-blog-auditor-tool

Author: github-actions[bot]

docs/src/content/docs/blog/2026-09-02-agent-of-the-day.md

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+---
+title: "Agent of the Day – September 2, 2026"
+description: "Ponytail Reviewer hunts pull requests for over-engineering, flagging unnecessary complexity before it ships — three runs, one clean pass, and a mid-flight model swap."
+authors:
+  - copilot
+date: 2026-09-02
+metadata:
+  seoDescription: "Ponytail Reviewer scans gh-aw pull requests for over-engineering and unnecessary complexity, filing review comments only when it finds real bloat."
+  linkedPostText: "The reviewer whose only job is calling out over-engineering."
+---
+
+## Agent of the Day – September 2, 2026: The Complexity Cop
+
+Most PR bots check style, tests, or security. Today's spotlight, **Ponytail Reviewer**, checks something harder to quantify: whether a change is *more complicated than it needs to be*. It runs on every pull request marked ready for review in `gh-aw` (and on demand via a `/ponytail` slash command), applies the community-maintained [`ponytail-review` skill](https://github.com/DietrichGebert/ponytail), and only speaks up when it finds real over-engineering — no noise, no rubber-stamping.
+
+### What the logs actually show
+
+Pulling the last three runs from `agentic-workflows` logs and audits paints a workflow that's doing its job quietly and reliably:
+
+- **[Run #33596102316](https://github.com/github/gh-aw/actions/runs/33596102316)** — a 7-minute pass over [PR #57860](https://github.com/github/gh-aw/pull/57860) (branch `copilot/sergo-fix-linters-silent-delete`), completed successfully with the Codex engine, burning 164K tokens across 8 model requests.
+- **[Run #33637292011](https://github.com/github/gh-aw/actions/runs/33637292011)** — another clean 7-minute review, this time against a `copilot/task-9919-*` branch, also completing without incident.
+- **[Run #33635177913](https://github.com/github/gh-aw/actions/runs/33635177913)** — a quick 7-second run against a PR titled *"Fix daily-token-consumption-report: replace unsupported claude-sonnet-4.5 model"*, which failed fast rather than burning minutes on a doomed invocation — exactly the kind of fail-cheap behavior you want from an automated reviewer.
+
+Across all three runs: zero errors, zero missing tools, and two safe-output items generated in total — meaning Ponytail Reviewer isn't just running, it's making judgment calls about when a comment is actually warranted versus when a PR is clean enough to leave alone.
+
+### Built for restraint, not volume
+
+The workflow's configuration reflects that philosophy directly. It caps itself at 10 review comments and exactly one submitted review per run, scoped to `COMMENT`-level feedback only — it can flag concerns but can't block a merge outright. It also shares a `pr-review-base` import with `min-integrity: approved`, meaning it won't act on unverified or low-trust pull request content, and it pre-fetches diff data through a shared caching layer so repeated invocations on the same PR don't re-download the same context.
+
+Running on `codex` with the `copilot/mai-code-1-flash-picker` model, it's tuned to be fast and cheap per invocation (roughly 3–8 AIC per run in these samples) rather than exhaustive — a reviewer that shows up quickly, says its piece if there's something to say, and gets out of the way.
+
+### Why this matters for `gh-aw`
+
+Complexity creep is invisible day-to-day and expensive in aggregate. A reviewer whose entire mandate is "is this more complicated than it needs to be?" is a narrow lens, but it's one humans rarely apply consistently under review-fatigue. Ponytail Reviewer applies it on every ready-for-review PR, for free, every time.
+
+### Try it yourself
+
+Curious how it works under the hood? The workflow definition lives at `.github/workflows/ponytail-reviewer.md` in [github/gh-aw](https://github.com/github/gh-aw). Explore the full catalog of agentic workflows, or build your own, at **[github.com/github/gh-aw](https://github.com/github/gh-aw)**.