🐛 fix(ci): remove ${{ ... }} expression from comment that still gets interpolated

Follow-up to PR #38. That PR fixed the SHELL line (replaced
${{ github.event.head_commit.message }} with git log) but kept a comment
mentioning the expression literally. Comments are not exempt: the
runner template engine interpolates ${{ ... }} BEFORE bash sees the
script, so the multi-line commit body still ended up injected mid-comment
and broke bash parsing on the next line.

Symptom (still fired on PRs #40-#45 even after PR #38):
  /var/run/act/workflow/12.sh: line 32: syntax error: unexpected newline
  ❌  Failure - Update badges and version

Fix: rewrite the comment without the literal expression. The other 3
references to head_commit.message in this file are inside job-level if:
contains(...) checks which are evaluated server-side as booleans, not
interpolated into shell — those are safe and unchanged.

Lesson for the verifier checklist: when fixing template-injection bugs,
search the WHOLE FILE for the expression including comments, not just
active code lines.

.gitea/workflows/ci-cd.yaml

@@ -299,10 +299,11 @@ jobs:
           # Check for version bump on main branch
           if [ "${{ github.ref }}" = "refs/heads/main" ]; then
             echo "🔖 Checking for version bump..."
-            # Always read from git log: ${{ github.event.head_commit.message }} expression
-            # is interpolated literally into the shell script, so any backtick, unbalanced
-            # quote, or special char in a commit body breaks the next line of the script
-            # (observed on PR #32-#35: 'syntax error: unexpected newline'). git log is safe.
+            # Read commit message from git, NOT from the workflow event payload.
+            # The event-payload expression is interpolated literally into the
+            # rendered script (even inside comments — see PR #38 + #46), so any
+            # backtick / unbalanced quote / multi-line body breaks bash parsing.
+            # git log is interpolation-free and safe.
             COMMIT_MSG=$(git log -1 --pretty=%B)
             ./scripts/ci-version-bump.sh "$COMMIT_MSG" --no-push
           fi