feat: add resolve_bot_pr_threads reusable workflow

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: rtibblesbot

.github/workflows/resolve_bot_pr_threads.yml

@@ -0,0 +1,44 @@
+name: Resolve bot PR review threads
+on:
+  workflow_call:
+jobs:
+  resolve-addressed-review-threads:
+    name: Resolve addressed review threads
+    if: >
+      github.event_name == 'pull_request_review_comment' && github.event.comment.user.login == 'rtibblesbot' && contains(github.event.comment.body, '<!-- agent:thread-resolved -->')
+
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+    steps:
+      - name: Resolve the thread containing this comment
+        env:
+          GH_TOKEN: "${{ github.token }}"
+          OWNER: "${{ github.event.repository.owner.login }}"
+          NAME: "${{ github.event.repository.name }}"
+          PR: "${{ github.event.pull_request.number }}"
+          COMMENT_ID: "${{ github.event.comment.id }}"
+        run: |
+          set -euo pipefail
+          thread_id=$(gh api graphql \
+            -f query="query(\$owner:String!,\$name:String!,\$pr:Int!){
+              repository(owner:\$owner,name:\$name){
+                pullRequest(number:\$pr){
+                  reviewThreads(first:100){
+                    nodes{ id isResolved comments(first:1){ nodes{ databaseId } } }
+                  }
+                }
+              }
+            }" \
+            -F owner="$OWNER" -F name="$NAME" -F pr="$PR" \
+            --jq ".data.repository.pullRequest.reviewThreads.nodes[]
+                  | select(.isResolved==false)
+                  | select(.comments.nodes[0].databaseId==$COMMENT_ID) | .id")
+          if [ -z "$thread_id" ]; then
+            echo "No matching unresolved thread for comment $COMMENT_ID"; exit 0
+          fi
+          gh api graphql \
+            -f query="mutation(\$id:ID!){ resolveReviewThread(input:{threadId:\$id}){ thread{ id isResolved } } }" \
+            -f id="$thread_id"
+          echo "Resolved thread $thread_id"