ci: pin action SHAs and add auto-tag release workflow

[RealDougEubanks]

Summary

• Pin all action SHAs: every uses: line in lint.yml and release.yml is now pinned to a commit SHA instead of a mutable tag (e.g. @v4 → @sha256), closing the supply chain attack surface where a tag could be repointed to malicious code.
• Upgrade while pinning: bumped hadolint/hadolint-action to v3.5.0 (supersedes Dependabot PR ci: bump hadolint/hadolint-action from 3.3.0 to 3.5.0 #33), docker/login-action to v4.6.0 (supersedes PR ci: bump docker/login-action from 4 to 4.5.2 #31), and softprops/action-gh-release to v3.0.3 (supersedes PR ci: bump softprops/action-gh-release from 3.0.0 to 3.0.3 #34).
• Auto-tag workflow (auto-tag.yml): on every push to main, reads the semver from synology/INFO, and if no matching vMAJOR.MINOR.PATCH tag exists, creates and pushes it. This triggers the existing release.yml automatically — the release flow is now: bump version in synology/INFO + CHANGELOG.md → merge PR → tag created → Docker multi-arch image pushed → GitHub Release published.

Copilot Autofix note

Copilot Autofix for CodeQL alerts is automatically enabled on public repos — no workflow change needed. When CodeQL opens an alert, a "Fix with Copilot" button appears on the alert page. The same applies to Dependabot security alerts.

Test plan

• CI passes on this PR (all lint, build, Trivy, gitleaks checks)
• After merge, confirm auto-tag.yml does not create a duplicate tag (v2.1.1 already exists)
• On next version bump PR, confirm tag is created and release.yml fires

🤖 Generated with Claude Code

https://claude.ai/code/session_01PhSFmsQDhrUoFR7F8EHkD5

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details
actions/actions/checkout	3d3c42e5aac5ba805825da76410c181273ba90b1	🟢 7	Details Check Score Reason Code-Review 🟢 10 all changesets reviewed Maintained 🟢 10 22 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10 Binary-Artifacts 🟢 10 no binaries found in the repo Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Pinned-Dependencies 🟢 3 dependency not pinned by hash detected -- score normalized to 3 Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Packaging ⚠️ -1 packaging workflow not detected Signed-Releases ⚠️ -1 no releases found Security-Policy 🟢 9 security policy file detected SAST 🟢 10 SAST tool is run on all commits Branch-Protection 🟢 6 branch protection is not maximal on development and all release branches
actions/docker/build-push-action	53b7df96c91f9c12dcc8a07bcb9ccacbed38856a	🟢 7.5	Details Check Score Reason Security-Policy 🟢 9 security policy file detected Binary-Artifacts 🟢 10 no binaries found in the repo Maintained 🟢 10 30 commit(s) and 5 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 10 all changesets reviewed Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Fuzzing ⚠️ 0 project is not fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: githubv4.Query: Resource not accessible by integration Signed-Releases ⚠️ -1 no releases found License 🟢 10 license file detected Packaging 🟢 10 packaging workflow detected Pinned-Dependencies 🟢 7 dependency not pinned by hash detected -- score normalized to 7 SAST 🟢 9 SAST tool detected but not run on all commits
actions/docker/login-action	dbcb813823bdd20940b903addbd779551569679f	🟢 8.5	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10 Binary-Artifacts 🟢 10 no binaries found in the repo Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Security-Policy 🟢 9 security policy file detected Code-Review 🟢 10 all changesets reviewed Token-Permissions 🟢 10 GitHub workflow tokens follow principle of least privilege CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Signed-Releases ⚠️ -1 no releases found Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: githubv4.Query: Resource not accessible by integration Pinned-Dependencies 🟢 6 dependency not pinned by hash detected -- score normalized to 6 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
actions/docker/metadata-action	dc802804100637a589fabce1cb79ff13a1411302	🟢 8.6	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 10 all changesets reviewed Security-Policy 🟢 9 security policy file detected Binary-Artifacts 🟢 10 no binaries found in the repo Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions 🟢 10 GitHub workflow tokens follow principle of least privilege CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Signed-Releases ⚠️ -1 no releases found Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: githubv4.Query: Resource not accessible by integration Pinned-Dependencies 🟢 7 dependency not pinned by hash detected -- score normalized to 7 Packaging 🟢 10 packaging workflow detected SAST 🟢 10 SAST tool is run on all commits
actions/docker/setup-buildx-action	37fe631027851001ddb9b187196cc803df7f5f0e	🟢 8.6	Details Check Score Reason Security-Policy 🟢 9 security policy file detected Code-Review 🟢 10 all changesets reviewed Binary-Artifacts 🟢 10 no binaries found in the repo Maintained 🟢 10 30 commit(s) and 2 issue activity found in the last 90 days -- score normalized to 10 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions 🟢 10 GitHub workflow tokens follow principle of least privilege CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: githubv4.Query: Resource not accessible by integration Signed-Releases ⚠️ -1 no releases found Pinned-Dependencies 🟢 7 dependency not pinned by hash detected -- score normalized to 7 Packaging 🟢 10 packaging workflow detected SAST 🟢 10 SAST tool is run on all commits
actions/docker/setup-qemu-action	1f40c72289eff860ee54a304f1438e3cff362e0a	🟢 8.4	Details Check Score Reason Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Packaging ⚠️ -1 packaging workflow not detected Code-Review 🟢 10 all changesets reviewed Maintained 🟢 10 30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10 Security-Policy 🟢 9 security policy file detected Binary-Artifacts 🟢 10 no binaries found in the repo Token-Permissions 🟢 10 GitHub workflow tokens follow principle of least privilege CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Signed-Releases ⚠️ -1 no releases found Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: githubv4.Query: Resource not accessible by integration Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 SAST 🟢 10 SAST tool is run on all commits
actions/softprops/action-gh-release	e598afbe1493e6b1bafb1f389cabb956eab91231	🟢 5.5	Details Check Score Reason Code-Review ⚠️ 0 Found 1/15 approved changesets -- score normalized to 0 Packaging ⚠️ -1 packaging workflow not detected Maintained 🟢 10 30 commit(s) and 3 issue activity found in the last 90 days -- score normalized to 10 Binary-Artifacts 🟢 10 no binaries found in the repo Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions 🟢 10 GitHub workflow tokens follow principle of least privilege Pinned-Dependencies 🟢 10 all dependencies are pinned CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Signed-Releases ⚠️ -1 no releases found Branch-Protection ⚠️ 0 branch protection not enabled on development/release branches Security-Policy ⚠️ 0 security policy file not detected SAST ⚠️ 0 SAST tool is not run on all commits -- score normalized to 0

Scanned Files

• .github/workflows/release.yml