more fixes

.github/workflows/gen-killed-in-gaza.yml

@@ -68,10 +68,10 @@ jobs:
         run: |
           # if our log output has lines there's issues worth noting
           if [[ $(wc -l <ci-tmp/killed-in-gaza-log.txt) -ge 2 ]]; then
-            echo "logs=1" >> "" >> "$GITHUB_OUTPUT"
+            echo "logs=1" >> "$GITHUB_OUTPUT"
           fi
           if [[ $(wc -l <ci-tmp/killed-in-gaza-json.diff) -ge 1 ]]; then
-            echo "diff=1" >> "" >> "$GITHUB_OUTPUT"
+            echo "diff=1" >> "$GITHUB_OUTPUT"
           fi
 
       - uses: actions/github-script@v7
@@ -104,9 +104,31 @@ jobs:
               body += '- [ ] a diff of the JSON file changes for review\n'
             }
 
-            github.rest.issues.createComment({
+            const commonInputs = {
               issue_number: process.env.PRNUM,
               owner: context.repo.owner,
-              repo: context.repo.repo,
+              repo: context.repo.repo
+            }
+
+            // delete prior comments
+            const comments = await github.rest.issues.listComments(commonInputs)
+            const idsToDelete = comments
+              .filter(comment => comment.user.login.includes('github-action'))
+              .map(comment => comment.id)
+
+            console.log(`found ${idsToDelete.length} comments to delete: ${idsToDelete.join(',')}`)
+
+            if (idsToDelete.length) {
+              await idsToDelete.reduce(async (chain, comment_id) => {
+                await chain;
+                await github.rest.issues.deleteComment({
+                  ...commonInputs,
+                  comment_id
+                })
+              }, Promise.resolve())
+            }
+
+            await github.rest.issues.createComment({
+              ...commonInputs,
               body
             })