chore(ci): migrate remaining workflows to namespace runner

[mabry1985]

Pulls 11 workflows off GitHub-hosted (`ubuntu-latest`) and ad-hoc `self-hosted` onto `namespace-profile-protolabs-linux` — the same runner already used by `checks.yml`, `test.yml`, and `langfuse-prompt-sync.yml`. This stops consuming GitHub Actions minutes for the migrated workflows.

ubuntu-latest → namespace (6)

• `code-review.yml`
• `idea-accepted.yml`
• `deploy-docs.yml`
• `close-external-prs.yml`
• `stale.yml`
• `triage.yml`

self-hosted → namespace (5)

• `auto-release.yml`
• `create-protolab-test.yml`
• `e2e-tests.yml`
• `regenerate-site.yml`
• `pr-check.yml`

Untouched

• `deploy-main.yml` — being removed in chore: remove deploy-main workflow #3648 (was the only workflow targeting the offline `protolabs-main` runner).
• `checks.yml`, `test.yml`, `langfuse-prompt-sync.yml` — already on namespace.

Verification

After this and #3648 land:

• All 14 active workflows route to `namespace-profile-protolabs-linux`.
• The 10 self-hosted automaker-runners (`automaker-runner-1..8`, `ava-staging`) become unused by CI and can be retired or repurposed.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Updated infrastructure configuration across multiple automated workflows to use a standardized runner environment.

[ghost]

Code Review — ? finding(s)

Async review running parallel to CodeRabbit. Findings are advisory; not all are merge blockers.

protoLabs Code Review Report

• Generated: 2026-05-24T00:37:00Z
• Git head: 0126fec55c0e981077f243a60fbe95fd1bd423ae
• Features mapped: 3
• Findings: 0

No findings recorded.

[coderabbitai]

📝 Walkthrough

Walkthrough

All thirteen GitHub Actions workflows in .github/workflows/ are systematically updated to use a custom namespace-profile-protolabs-linux runner instead of generic (ubuntu-latest, self-hosted) runner labels. Job logic, triggers, permissions, and steps remain unchanged.

Changes

GitHub Actions Runner Standardization

Layer / File(s)

Summary

Workflow runner migration to namespace-profile-protolabs-linux .github/workflows/auto-release.yml, .github/workflows/pr-check.yml, .github/workflows/create-protolab-test.yml, .github/workflows/e2e-tests.yml, .github/workflows/deploy-docs.yml, .github/workflows/regenerate-site.yml, .github/workflows/code-review.yml, .github/workflows/close-external-prs.yml, .github/workflows/idea-accepted.yml, .github/workflows/stale.yml, .github/workflows/triage.yml

Each workflow job (release, build, ci-complete, test, summary, e2e, deploy, regenerate, review, close-external-pr, notify-acceptance, stale, and triage) updates runs-on from self-hosted or ubuntu-latest to namespace-profile-protolabs-linux.

🎯 1 (Trivial) | ⏱️ ~3 minutes

🐰 Eleven workflows hop aboard,
A runner unified, by custom accord,
From self-hosted scattered to one branded home,
No logic changed—just where jobs roam! 🏃‍♂️✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title clearly and accurately summarizes the main change: migrating 11 remaining GitHub Actions workflows to the namespace runner across multiple workflow files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/migrate-workflows-to-namespace

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.github/workflows/auto-release.yml:
- Line 24: The workflow uses a custom runner label
"namespace-profile-protolabs-linux" (seen in runs-on in
.github/workflows/auto-release.yml) but actionlint will fail unless that label
is declared in your actionlint config; update your actionlint configuration
(e.g., .actionlint.yml / .actionlint.yaml) to declare the custom runner label
(add an entry for "namespace-profile-protolabs-linux" under the runners/labels
section) so actionlint recognizes the runner and the CI lint step no longer
errors.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 84db9dad-3aff-4fd1-a616-548fdfce6f23

📥 Commits

Reviewing files that changed from the base of the PR and between cb587ab and 4d1445f.

📒 Files selected for processing (11)

• .github/workflows/auto-release.yml
• .github/workflows/close-external-prs.yml
• .github/workflows/code-review.yml
• .github/workflows/create-protolab-test.yml
• .github/workflows/deploy-docs.yml
• .github/workflows/e2e-tests.yml
• .github/workflows/idea-accepted.yml
• .github/workflows/pr-check.yml
• .github/workflows/regenerate-site.yml
• .github/workflows/stale.yml
• .github/workflows/triage.yml

[coderabbitai]

⚠️ Potential issue | 🟠 Major | ⚡ Quick win

Configure actionlint for the custom runner label.

namespace-profile-protolabs-linux is valid for your infra, but actionlint will fail unless this custom label is declared in actionlint config. This blocks CI signal across all migrated workflows.

🔧 Suggested fix (centralized)

+# .github/actionlint.yaml (or existing actionlint config file)
+self-hosted-runner:
+  labels:
+    - namespace-profile-protolabs-linux

🧰 Tools

🪛 actionlint (1.7.12)

[error] 24-24: label "namespace-profile-protolabs-linux" is unknown. available labels are "windows-latest", "windows-latest-8-cores", "windows-2025", "windows-2025-vs2026", "windows-2022", "windows-11-arm", "ubuntu-slim", "ubuntu-latest", "ubuntu-latest-4-cores", "ubuntu-latest-8-cores", "ubuntu-latest-16-cores", "ubuntu-24.04", "ubuntu-24.04-arm", "ubuntu-22.04", "ubuntu-22.04-arm", "macos-latest", "macos-latest-xlarge", "macos-latest-large", "macos-26-intel", "macos-26-xlarge", "macos-26-large", "macos-26", "macos-15-intel", "macos-15-xlarge", "macos-15-large", "macos-15", "macos-14-xlarge", "macos-14-large", "macos-14", "self-hosted", "x64", "arm", "arm64", "linux", "macos", "windows". if it is a custom label for self-hosted runner, set list of labels in actionlint.yaml config file

(runner-label)

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In @.github/workflows/auto-release.yml at line 24, The workflow uses a custom
runner label "namespace-profile-protolabs-linux" (seen in runs-on in
.github/workflows/auto-release.yml) but actionlint will fail unless that label
is declared in your actionlint config; update your actionlint configuration
(e.g., .actionlint.yml / .actionlint.yaml) to declare the custom runner label
(add an entry for "namespace-profile-protolabs-linux" under the runners/labels
section) so actionlint recognizes the runner and the CI lint step no longer
errors.