[aw-maintenance:failures-investigator] Failure Report: blocked compile-agentic version v0.82.13 across gh-aw-workshop workflows

- **Target repository**: `githubnext/gh-aw-workshop`
- **Window**: last 24 hours (from 2026-09-02T21:45:15Z)
- **Failed agentic runs**: 43
- **Failure buckets**: 1 (P0: 1, P1: 0, P2: 0)
- **Agentic workflows in repository**: 22

### Failure Buckets

| Severity | Workflow | Error signature | Runs | Tracking |
|---|---|---|---|---|
| P0 | All agentic workflows (activation job, "Check compile-agentic version" step) | `##[error]Blocked compile-agentic version: v0.82.13 is in the blocked versions list. Update gh-aw to the latest version and recompile your workflow.` | 43 (evidence sampled from 5) | new issue |

### Resolved Buckets

none

Evidence

All 5 detailed sampled failures fail in the `activation` job at the `Check compile-agentic version` step with the identical error:

```
##[error]Blocked compile-agentic version: v0.82.13 is in the blocked versions list. Update gh-aw to the latest version and recompile your workflow.
```

Sampled runs (all same signature, all workflows, all `activation` job):
- `Workflow Skills Editor` — https://github.com/githubnext/gh-aw-workshop/actions/runs/33807856135
- `Workshop Link Checker` — https://github.com/githubnext/gh-aw-workshop/actions/runs/33807178518
- `Workshop Builder` — https://github.com/githubnext/gh-aw-workshop/actions/runs/33805019420
- `Workshop Builder` — https://github.com/githubnext/gh-aw-workshop/actions/runs/33799237747
- `Workshop Author` — https://github.com/githubnext/gh-aw-workshop/actions/runs/33793552118

The step logs `GH_AW_COMPILED_VERSION: v0.82.13` before failing. A scan of the target checkout's compiled `.lock.yml` files (`target/.github/workflows/*.lock.yml`) confirms all 22 lock files were compiled with `GH_AW_COMPILED_VERSION: "v0.82.13"`, which explains why every agentic workflow in the repository fails at activation regardless of workflow-specific logic — the gh-aw runtime added `v0.82.13` to its blocked-versions list (fetched from `https://raw.githubusercontent.com/github/gh-aw-actions/main/.github/aw/compat.json`) after these lock files were compiled.

Because activation fails before the workflow's agent job runs, this single defect is the root cause of all 43 failed runs in the lookback window across all affected workflows in the repository.

### Next Steps

1. Recompile all `.github/workflows/*.lock.yml` files in `githubnext/gh-aw-workshop` with a non-blocked `gh-aw` version (later than `v0.82.13`) and commit the regenerated lock files.
2. After recompiling, verify a sample workflow run succeeds past the `activation` job.
3. Consider adding an automated check (e.g., a scheduled workflow or CI gate) that warns when the installed `gh-aw` compiler version approaches end-of-support, to catch this class of failure before it blocks all workflows simultaneously.

### Control Plane
- Correlation ID: 33809340235-68
- Central repository: githubnext/gh-aw-cao
- Control plane run URL: https://github.com/githubnext/gh-aw-cao/actions/runs/33809340235

> Generated by [:rotating_light: AW Maintenance / Failures](https://github.com/githubnext/gh-aw-cao/actions/runs/33809340235) · copilot · auto · 30.6 AIC · ⌖ 9.32 AIC · ⊞ 14.9K · [◷](https://github.com/search?q=repo%3Agithubnext%2Fgh-aw-cao+is%3Aissue+%22gh-aw-workflow-call-id%3A+githubnext%2Fgh-aw-cao%2Faw-failures-investigator%22&type=issues)
> - [x] expires on Sep 17, 2026, 9:50 PM UTC

Start with the 22 compiled files under target/.github/workflows/*.lock.yml and inspect their GH_AW_COMPILED_VERSION values. Recompile all workflows with a non-blocked gh-aw version, commit the regenerated lock files, and verify a sample workflow run passes the activation job without the blocked-version error.

Written by the indexing model from the issue text.