Link each commit in the release changelog to its own commit page

COMMIT_LIST only rendered the bare subject line per commit, with no
way to jump to that specific commit — only the triggering commit
(Source:) had a link. Each line now reads
"- [<short-sha>](<repo>/commit/<sha>) <subject>", matching the same
link style already used for Source.

.gitea/workflows/ci.yml

@@ -51,10 +51,11 @@ jobs:
         run: |
           BEFORE="${{ github.event.before }}"
           if [ -n "$BEFORE" ] && [ "$BEFORE" != "0000000000000000000000000000000000000000" ] && git cat-file -e "$BEFORE" 2>/dev/null; then
-            CHANGED=$(git diff --name-only "$BEFORE" "${{ github.sha }}")
+            BASE_REF="$BEFORE"
           else
-            CHANGED=$(git diff --name-only HEAD~1 HEAD)
+            BASE_REF="HEAD~1"
           fi
+          CHANGED=$(git diff --name-only "$BASE_REF" "${{ github.sha }}")
           echo "Changed files:"
           echo "$CHANGED"
 
@@ -127,9 +128,9 @@ jobs:
             fi
           fi
 
-          CHANGED_LIST=$(echo "$CHANGED" | sed 's/^/- /')
-
           REPO_URL="https://git.djeex.fr/Djeex/socat-proxy"
+          COMMIT_LIST=$(git log --no-merges --format="- [%h](${REPO_URL}/commit/%H) %s" "$BASE_REF".."${{ github.sha }}")
+
           SHORT_SHA=$(echo "${{ github.sha }}" | cut -c1-7)
           SOURCE_LINE="[${SHORT_SHA}](${REPO_URL}/commit/${{ github.sha }})"
           if [ -n "$PR_NUM" ]; then
@@ -138,15 +139,17 @@ jobs:
 
           BODY=$(cat <<EOF
           ## Changelog
+          ---
 
           ### ${CATEGORY}
+          ---
           ${CHANGE_TITLE}
 
           **Source:** ${SOURCE_LINE}
           **Image:** \`${IMAGE}:${VERSION}\`
 
-          **Changed files:**
-          ${CHANGED_LIST}
+          **Commits:**
+          ${COMMIT_LIST}
           EOF
           )