Merge PR #53: Add release-tag automation helper

Merge reviewed PR #53 for issue #50. Validation passed and no release tags were created or pushed during review.

skills/llm-project-workflow/templates/release-tag.md

@@ -3,6 +3,18 @@
 Copy, fill the `<...>` fields, and paste as the task prompt. Tagging is
 irreversible-ish and outward-facing — fail closed on any doubt.
 
+> If the project ships `scripts/release-tag`, prefer it — it enforces every gate
+> below automatically and is safe by default (no push without `--push`,
+> `--dry-run` changes nothing):
+>
+> ```bash
+> scripts/release-tag --dry-run <vX.Y.Z>
+> scripts/release-tag <vX.Y.Z> --notes-file <path>
+> scripts/release-tag <vX.Y.Z> --notes-file <path> --push
+> ```
+>
+> The manual steps below are the fallback / what the script does.
+
 ```text
 Task: cut release <vX.Y.Z> from master.