fix: explicitly set tag_name in release workflow (#197)

* fix: explicitly set tag_name in release workflow

Without explicit tag_name, softprops/action-gh-release relies on
GITHUB_REF being correct at runtime. If anything goes wrong (re-runs,
race conditions with tag deletion/recreation), the release ends up
untagged (e.g. untagged-bfb61f621c7818a82994).

Also pins the CHANGELOG.md link to the tag so it resolves correctly
in draft releases before publication.

* chore: add kiro steering file for PR conventions

Ensures the contributor statement required by CI is always included
when creating PRs via Kiro CLI.

* fix: add language identifier to fenced code block (MD040)

---------

Co-authored-by: Scott Schreckengaust <345885+scottschreckengaust@users.noreply.github.com>

Author: scottschreckengaust

.github/workflows/release.yml

@@ -60,12 +60,13 @@ jobs:
         if: steps.version.outputs.skip != 'true'
         uses: softprops/action-gh-release@a06a81a03ee405af7f2048a818ed3f03bbf83c7b # v2.5.0
         with:
+          tag_name: ${{ steps.version.outputs.tag }}
           draft: true
           name: "AI-DLC Workflow v${{ steps.version.outputs.version }}"
           body: |
             Release v${{ steps.version.outputs.version }}
             
-            See [CHANGELOG.md](CHANGELOG.md) for details.
+            See [CHANGELOG.md](https://github.com/${{ github.repository }}/blob/${{ steps.version.outputs.tag }}/CHANGELOG.md) for details.
             
             ## Downloads
             - **ai-dlc-rules** - Rules format (Amazon Q, Kiro, etc.)

.kiro/steering/pr-conventions.md

@@ -0,0 +1,12 @@
+# Pull Request Conventions
+
+When creating pull requests in this repository, always include the following in the PR body:
+
+1. Use the structure from `.github/pull_request_template.md`
+2. The PR description MUST end with this contributor statement (required by CI):
+
+```text
+By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of the [project license](https://github.com/awslabs/aidlc-workflows/blob/main/LICENSE).
+```
+
+Without this statement, the `Require Contributor Statement` CI check will fail.