chore(ci): remove github agentic workflows (gh-aw)

[yigitdot]

Problem

Agentic Triage had failed on every run since 2026-09-01, filing a fresh [aw] Agentic Triage failed issue each time (#226, #234). Last green run was 2026-07-26.

#236 tried to fix it by upgrading the gh-aw toolchain to v0.88.2. That PR is closed — rather than keep chasing a four-month-lagging agentic-CI toolchain whose only visible output has been failure issues, we're removing gh-aw from the repository entirely.

Changes

Reverts the union of the three commits that introduced gh-aw — 84014f1 (#94, scaffolding), 0955170 (#95, issue-triage), 0aa9a3d (#96, cost-tracker). 10 files, 3,331 deletions, no additions.

deleted	why
.github/workflows/issue-triage.md + .lock.yml	the failing workflow (source + generated lock)
.github/workflows/cost-tracker.md + .lock.yml	its sibling agentic workflow
.github/workflows/copilot-setup-steps.yml	installed the gh-aw CLI for Copilot Agent runs
.github/agents/agentic-workflows.agent.md	gh-aw dispatcher agent; dir now empty
.github/aw/actions-lock.json	gh-aw action pins; dir now empty
.vscode/mcp.json	wired up the gh aw mcp-server MCP server
.vscode/settings.json	github.copilot.enable: markdown, added by the same setup commit; dir now empty
.gitattributes	its only line was the *.lock.yml linguist/merge rule — empty once the lock files go, so removed rather than left as a stub

Deliberately untouched

• .github/dependabot.yml — the github-actions ecosystem still covers website.yml and docs.yml, and the npm block plus its eslint major-version ignore are unrelated to gh-aw.
• website.yml / docs.yml — hand-written, no gh-aw references. They are now the only two workflows in the repo.
• COPILOT_GITHUB_TOKEN repo secret — left in place; nothing references it any more, so it can be revoked separately if desired.

Also done outside the diff

• [aw] Agentic Triage failed #234 and [aw] Agentic Triage failed #226 closed as obsolete, with a note explaining the workflows are gone.
• The agentic-workflows label deleted — it existed solely to tag those auto-filed failure issues.

Verification

• grep -rni "gh-aw\|gh aw\|agentic\|copilot-setup\|issue-triage\|cost-tracker" over the tree returns no matches. (The one AW hit in content/blog/01-why-now.mdx is "AWS CloudFront" — unrelated, untouched.)
• pnpm lint, pnpm typecheck, pnpm format:check clean; pnpm test 463 passed across 22 files.
• pnpm build green, including check:out and check:og-image (16 pages, 48 same-origin URLs verified).

Nothing in this PR touches site code, so the website workflow passing is the full signal — there is no post-merge step to confirm.

🤖 Generated with Claude Code

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View logs

[Copilot]

🟢 Approval recommended

The change is a clean removal of gh-aw-related files/configuration, and no remaining repository references to those components were found.

Pull request overview

This PR removes the GitHub Agentic Workflows (gh-aw) integration from the repository, including the agentic workflow sources, their generated lock files, the Copilot setup workflow, and local editor configuration that wired up the gh-aw MCP server.

Changes:

• Deleted the issue-triage and cost-tracker gh-aw workflow source .md files and their compiled .lock.yml counterparts.
• Removed supporting gh-aw infrastructure (copilot-setup-steps workflow, actions lock JSON, dispatcher agent).
• Removed repo/editor glue that only existed for gh-aw (.vscode/mcp.json, .vscode/settings.json, .gitattributes entry for lock files).

File summaries

File	Description
.vscode/settings.json	Removes VS Code Copilot markdown enablement that was introduced for gh-aw usage.
.vscode/mcp.json	Removes the VS Code MCP server config for gh aw mcp-server.
.github/workflows/issue-triage.md	Removes the gh-aw “Agentic Triage” workflow source.
.github/workflows/issue-triage.lock.yml	Removes the generated lockfile for the issue-triage agentic workflow.
.github/workflows/cost-tracker.md	Removes the gh-aw cost tracking workflow source.
.github/workflows/cost-tracker.lock.yml	Removes the generated lockfile for the cost-tracker agentic workflow.
.github/workflows/copilot-setup-steps.yml	Removes the workflow that installed/configured gh-aw for Copilot Agent runs.
.github/aw/actions-lock.json	Removes gh-aw action pin metadata since gh-aw is being removed.
.github/agents/agentic-workflows.agent.md	Removes the gh-aw dispatcher agent definition.
.gitattributes	Removes the lockfile-specific linguist/merge rule since no .lock.yml files remain.

Review details

• Files reviewed: 10/10 changed files
• Comments generated: 0
• Review effort level: Lite

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