fix(sync-workflow): filter mops cli-* releases, fix diff direction, remove unused has_changes var

Author: marc0olo

.github/workflows/sync-upstream.yml

@@ -90,16 +90,14 @@ jobs:
             echo ""
           } > /tmp/pr-body.md
 
-          HAS_CHANGES=false
           for upstream_name in "writing-motoko" "migrating-motoko" "migrating-motoko-enhanced"; do
             local_name="${UPSTREAM_TO_LOCAL[$upstream_name]}"
             curl -sf "https://raw.githubusercontent.com/caffeinelabs/motoko/${SHA}/.agents/skills/${upstream_name}/SKILL.md" \
               > /tmp/upstream-${upstream_name}.md 2>/dev/null || {
               echo "(skill not found at this path)" > /tmp/upstream-${upstream_name}.md
             }
-            DIFF=$(diff /tmp/upstream-${upstream_name}.md skills/${local_name}/SKILL.md || true)
+            DIFF=$(diff skills/${local_name}/SKILL.md /tmp/upstream-${upstream_name}.md || true)
             if [ -n "$DIFF" ]; then
-              HAS_CHANGES=true
               {
                 echo "### \`${local_name}\` ← upstream \`${upstream_name}\`"
                 echo ""
@@ -118,7 +116,6 @@ jobs:
             fi
           done
 
-          echo "has_changes=$HAS_CHANGES" >> $GITHUB_ENV
 
       - name: Create sync PR
         if: steps.check.outputs.needed == 'true'
@@ -148,7 +145,7 @@ jobs:
       - name: Get latest mops release tag
         id: latest
         run: |
-          TAG=$(gh release view --repo caffeinelabs/mops --json tagName -q .tagName)
+          TAG=$(gh release list --repo caffeinelabs/mops --json tagName --jq '[.[] | select(.tagName | startswith("cli-"))] | first | .tagName')
           echo "tag=$TAG" >> $GITHUB_OUTPUT
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -208,7 +205,7 @@ jobs:
             echo "(skill not found at this path)" > /tmp/upstream-mops-cli.md
           }
 
-          DIFF=$(diff /tmp/upstream-mops-cli.md skills/mops-cli/SKILL.md || true)
+          DIFF=$(diff skills/mops-cli/SKILL.md /tmp/upstream-mops-cli.md || true)
 
           {
             echo "## Upstream diff: caffeinelabs/mops \`${CURRENT}\` → \`${LATEST}\`"