chore(ci): remove label-sync workflow and docs entry (superseded by declarative IssueLabels)

docs/src/content/docs/projects/active.mdx

@@ -74,13 +74,12 @@ A collection of [composite GitHub Actions](https://docs.github.com/en/actions/tu
 - **Setup Agent Skills**: Install agent skills via `gh skill` for one or more agents (e.g. GitHub Copilot, Claude Code)
 - **Setup Go Toolchain**: Set up Go with optional private module support
 - **Setup KSail**: Install [KSail](https://github.com/devantler-tech/ksail) CLI via [Homebrew](https://brew.sh/)
-- **Sync Labels**: Sync GitHub labels across repositories
 - **TODOs**: Create GitHub issues from TODO comments in code
 - **Update Agent Skills**: Run `gh skill update --all` and report changes
 - **Upload Coverage**: Upload a Cobertura XML coverage report to GitHub Code Quality
 - **Upsert Issue**: Create, update, reopen, or close a GitHub issue by title
 
-{/* actions-dirs: aggregate-job-checks,approve-pr,dependency-review,diagnose-flux,enable-auto-merge-on-pr,cleanup-ghcr-packages,free-disk-space,login-to-ghcr,run-dotnet-tests,setup-agent-skills,setup-go-toolchain,setup-ksail-cli,sync-github-labels,create-issues-from-todos,update-agent-skills,upload-coverage,upsert-issue — one entry per composite-action directory in devantler-tech/actions, in bullet order. The docs CI drift-check asserts this set EQUALS the live action directories, so an added, removed, OR renamed action breaks the build. When that happens, update the matching bullet above and this marker together. */}
+{/* actions-dirs: aggregate-job-checks,approve-pr,dependency-review,diagnose-flux,enable-auto-merge-on-pr,cleanup-ghcr-packages,free-disk-space,login-to-ghcr,run-dotnet-tests,setup-agent-skills,setup-go-toolchain,setup-ksail-cli,create-issues-from-todos,update-agent-skills,upload-coverage,upsert-issue — one entry per composite-action directory in devantler-tech/actions, in bullet order. The docs CI drift-check asserts this set EQUALS the live action directories, so an added, removed, OR renamed action breaks the build. When that happens, update the matching bullet above and this marker together. */}
 
 ## [🧠 Agent Skills](https://github.com/devantler-tech/agent-skills) ![GitHub Copilot](https://img.shields.io/badge/GitHub%20Copilot-000000.svg?style=for-the-badge&logo=githubcopilot&logoColor=white) ![Claude](https://img.shields.io/badge/Claude-D97757.svg?style=for-the-badge&logo=claude&logoColor=white)