feat: update dedupe backfill script to filter by issue number

Replace date-based filtering with issue number filtering to only process issues older than #4050. This provides more precise control over which issues are processed for duplicate detection backfill.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

.claude/commands/dedupe.md

@@ -28,9 +28,10 @@ Found 3 possible duplicate issues:
 2. <link to issue>
 3. <link to issue>
 
-If your issue is a duplicate, please close it and 👍 the existing issue instead.
+This issue will be automatically closed as a duplicate in 3 days.
 
-<sub>This issue will be automatically closed as a duplicate in 3 days if there are no additional comments. To prevent auto-closure, please 👎 this comment.</sub>
+- If your issue is a duplicate, please close it and 👍 the existing issue instead
+- To prevent auto-closure, add a comment or 👎 this comment
 
 🤖 Generated with [Claude Code](https://claude.ai/code)
 

.github/workflows/auto-close-duplicates.yml

@@ -1,5 +1,5 @@
-name: Auto-close duplicate issues (DRY RUN)
+name: Auto-close duplicate issues
-description: Dry run - logs issues that would be auto-closed as duplicates after 3 days if no response
+description: Auto-closes issues that are duplicates of existing issues
 on:
   schedule:
     - cron: "0 9 * * *"
@@ -11,20 +11,21 @@ jobs:
     timeout-minutes: 10
     permissions:
       contents: read
-      issues: read
+      issues: write
 
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-      
+
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
         with:
           bun-version: latest
-      
+
       - name: Auto-close duplicate issues
         run: bun run scripts/auto-close-duplicates.ts
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           GITHUB_REPOSITORY_OWNER: ${{ github.repository_owner }}
           GITHUB_REPOSITORY_NAME: ${{ github.event.repository.name }}
+          STATSIG_API_KEY: ${{ secrets.STATSIG_API_KEY }}

.github/workflows/backfill-duplicate-comments.yml

@@ -0,0 +1,44 @@
+name: Backfill Duplicate Comments
+description: Triggers duplicate detection for old issues that don't have duplicate comments
+
+on:
+  workflow_dispatch:
+    inputs:
+      days_back:
+        description: 'How many days back to look for old issues'
+        required: false
+        default: '90'
+        type: string
+      dry_run:
+        description: 'Dry run mode (true to only log what would be done)'
+        required: false
+        default: 'true'
+        type: choice
+        options:
+          - 'true'
+          - 'false'
+
+jobs:
+  backfill-duplicate-comments:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    permissions:
+      contents: read
+      issues: read
+      actions: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+      
+      - name: Backfill duplicate comments
+        run: bun run scripts/backfill-duplicate-comments.ts
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          DAYS_BACK: ${{ inputs.days_back }}
+          DRY_RUN: ${{ inputs.dry_run }}

.github/workflows/claude-dedupe-issues.yml

@@ -3,6 +3,12 @@ description: Automatically dedupe GitHub issues using Claude Code
 on:
   issues:
     types: [opened]
+  workflow_dispatch:
+    inputs:
+      issue_number:
+        description: 'Issue number to process for duplicate detection'
+        required: true
+        type: string
 
 jobs:
   claude-dedupe-issues:
@@ -19,7 +25,56 @@ jobs:
       - name: Run Claude Code slash command
         uses: anthropics/claude-code-base-action@beta
         with:
-          prompt: "/dedupe ${{ github.repository }}/issues/${{ github.event.issue.number }}"
+          prompt: "/dedupe ${{ github.repository }}/issues/${{ github.event.issue.number || inputs.issue_number }}"
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           claude_env: |
             GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Log duplicate comment event to Statsig
+        if: always()
+        env:
+          STATSIG_API_KEY: ${{ secrets.STATSIG_API_KEY }}
+        run: |
+          ISSUE_NUMBER=${{ github.event.issue.number || inputs.issue_number }}
+          REPO=${{ github.repository }}
+          
+          if [ -z "$STATSIG_API_KEY" ]; then
+            echo "STATSIG_API_KEY not found, skipping Statsig logging"
+            exit 0
+          fi
+          
+          # Prepare the event payload
+          EVENT_PAYLOAD=$(jq -n \
+            --arg issue_number "$ISSUE_NUMBER" \
+            --arg repo "$REPO" \
+            --arg triggered_by "${{ github.event_name }}" \
+            '{
+              events: [{
+                eventName: "github_duplicate_comment_added",
+                value: 1,
+                metadata: {
+                  repository: $repo,
+                  issue_number: ($issue_number | tonumber),
+                  triggered_by: $triggered_by,
+                  workflow_run_id: "${{ github.run_id }}"
+                },
+                time: (now | floor | tostring)
+              }]
+            }')
+          
+          # Send to Statsig API
+          echo "Logging duplicate comment event to Statsig for issue #${ISSUE_NUMBER}"
+          
+          RESPONSE=$(curl -s -w "\n%{http_code}" -X POST https://events.statsigapi.net/v1/log_event \
+            -H "Content-Type: application/json" \
+            -H "STATSIG-API-KEY: ${STATSIG_API_KEY}" \
+            -d "$EVENT_PAYLOAD")
+          
+          HTTP_CODE=$(echo "$RESPONSE" | tail -n1)
+          BODY=$(echo "$RESPONSE" | head -n-1)
+          
+          if [ "$HTTP_CODE" -eq 200 ] || [ "$HTTP_CODE" -eq 202 ]; then
+            echo "Successfully logged duplicate comment event for issue #${ISSUE_NUMBER}"
+          else
+            echo "Failed to log duplicate comment event for issue #${ISSUE_NUMBER}. HTTP ${HTTP_CODE}: ${BODY}"
+          fi

.github/workflows/lock-closed-issues.yml

@@ -13,16 +13,80 @@ concurrency:
   group: lock-threads
 
 jobs:
-  lock-threads:
+  lock-closed-issues:
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-threads@1bf7ec25051fe7c00bdd17e6a7cf3d7bfb7dc771 # v5.0.1
+      - name: Lock closed issues after 7 days of inactivity
+        uses: actions/github-script@v7
         with:
-          issue-inactive-days: "7"
+          script: |
-          process-only: "issues"
+            const sevenDaysAgo = new Date();
-          log-output: true
+            sevenDaysAgo.setDate(sevenDaysAgo.getDate() - 7);
-          issue-comment: >
+
-            This issue has been automatically locked since it was
+            const lockComment = `This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.`;
-            closed and has not had any activity for 7 days.
+
-            If you're experiencing a similar issue, please file a new issue
+            let page = 1;
-            and reference this one if it's relevant.
+            let hasMore = true;
+            let totalLocked = 0;
+
+            while (hasMore) {
+              // Get closed issues (pagination)
+              const { data: issues } = await github.rest.issues.listForRepo({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                state: 'closed',
+                sort: 'updated',
+                direction: 'asc',
+                per_page: 100,
+                page: page
+              });
+              
+              if (issues.length === 0) {
+                hasMore = false;
+                break;
+              }
+              
+              for (const issue of issues) {
+                // Skip if already locked
+                if (issue.locked) continue;
+                
+                // Skip pull requests
+                if (issue.pull_request) continue;
+                
+                // Check if updated more than 7 days ago
+                const updatedAt = new Date(issue.updated_at);
+                if (updatedAt > sevenDaysAgo) {
+                  // Since issues are sorted by updated_at ascending, 
+                  // once we hit a recent issue, all remaining will be recent too
+                  hasMore = false;
+                  break;
+                }
+                
+                try {
+                  // Add comment before locking
+                  await github.rest.issues.createComment({
+                    owner: context.repo.owner,
+                    repo: context.repo.repo,
+                    issue_number: issue.number,
+                    body: lockComment
+                  });
+                  
+                  // Lock the issue
+                  await github.rest.issues.lock({
+                    owner: context.repo.owner,
+                    repo: context.repo.repo,
+                    issue_number: issue.number,
+                    lock_reason: 'resolved'
+                  });
+                  
+                  totalLocked++;
+                  console.log(`Locked issue #${issue.number}: ${issue.title}`);
+                } catch (error) {
+                  console.error(`Failed to lock issue #${issue.number}: ${error.message}`);
+                }
+              }
+              
+              page++;
+            }
+
+            console.log(`Total issues locked: ${totalLocked}`);

.github/workflows/log-issue-events.yml

@@ -0,0 +1,176 @@
+name: Log GitHub Issue Events
+
+on:
+  issues:
+    types: [opened, closed]
+
+jobs:
+  log-issue-created:
+    if: github.event.action == 'opened'
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    permissions:
+      contents: read
+      issues: read
+
+    steps:
+      - name: Log issue creation to Statsig
+        env:
+          STATSIG_API_KEY: ${{ secrets.STATSIG_API_KEY }}
+        run: |
+          ISSUE_NUMBER=${{ github.event.issue.number }}
+          REPO=${{ github.repository }}
+          ISSUE_TITLE=$(echo '${{ github.event.issue.title }}' | sed "s/'/'\\\\''/g")
+          AUTHOR="${{ github.event.issue.user.login }}"
+          CREATED_AT="${{ github.event.issue.created_at }}"
+          
+          if [ -z "$STATSIG_API_KEY" ]; then
+            echo "STATSIG_API_KEY not found, skipping Statsig logging"
+            exit 0
+          fi
+          
+          # Prepare the event payload
+          EVENT_PAYLOAD=$(jq -n \
+            --arg issue_number "$ISSUE_NUMBER" \
+            --arg repo "$REPO" \
+            --arg title "$ISSUE_TITLE" \
+            --arg author "$AUTHOR" \
+            --arg created_at "$CREATED_AT" \
+            '{
+              events: [{
+                eventName: "github_issue_created",
+                value: 1,
+                metadata: {
+                  repository: $repo,
+                  issue_number: ($issue_number | tonumber),
+                  issue_title: $title,
+                  issue_author: $author,
+                  created_at: $created_at
+                },
+                time: (now | floor | tostring)
+              }]
+            }')
+          
+          # Send to Statsig API
+          echo "Logging issue creation to Statsig for issue #${ISSUE_NUMBER}"
+          
+          RESPONSE=$(curl -s -w "\n%{http_code}" -X POST https://events.statsigapi.net/v1/log_event \
+            -H "Content-Type: application/json" \
+            -H "STATSIG-API-KEY: ${STATSIG_API_KEY}" \
+            -d "$EVENT_PAYLOAD")
+          
+          HTTP_CODE=$(echo "$RESPONSE" | tail -n1)
+          BODY=$(echo "$RESPONSE" | head -n-1)
+          
+          if [ "$HTTP_CODE" -eq 200 ] || [ "$HTTP_CODE" -eq 202 ]; then
+            echo "Successfully logged issue creation for issue #${ISSUE_NUMBER}"
+          else
+            echo "Failed to log issue creation for issue #${ISSUE_NUMBER}. HTTP ${HTTP_CODE}: ${BODY}"
+          fi
+
+  log-issue-closed:
+    if: github.event.action == 'closed'
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    permissions:
+      contents: read
+      issues: read
+
+    steps:
+      - name: Log issue closure to Statsig
+        env:
+          STATSIG_API_KEY: ${{ secrets.STATSIG_API_KEY }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          ISSUE_NUMBER=${{ github.event.issue.number }}
+          REPO=${{ github.repository }}
+          ISSUE_TITLE=$(echo '${{ github.event.issue.title }}' | sed "s/'/'\\\\''/g")
+          CLOSED_BY="${{ github.event.issue.closed_by.login }}"
+          CLOSED_AT="${{ github.event.issue.closed_at }}"
+          STATE_REASON="${{ github.event.issue.state_reason }}"
+          
+          if [ -z "$STATSIG_API_KEY" ]; then
+            echo "STATSIG_API_KEY not found, skipping Statsig logging"
+            exit 0
+          fi
+          
+          # Get additional issue data via GitHub API
+          echo "Fetching additional issue data for #${ISSUE_NUMBER}"
+          ISSUE_DATA=$(curl -s -H "Authorization: token ${GITHUB_TOKEN}" \
+            -H "Accept: application/vnd.github.v3+json" \
+            "https://api.github.com/repos/${REPO}/issues/${ISSUE_NUMBER}")
+          
+          COMMENTS_COUNT=$(echo "$ISSUE_DATA" | jq -r '.comments')
+          
+          # Get reactions data
+          REACTIONS_DATA=$(curl -s -H "Authorization: token ${GITHUB_TOKEN}" \
+            -H "Accept: application/vnd.github.v3+json" \
+            "https://api.github.com/repos/${REPO}/issues/${ISSUE_NUMBER}/reactions")
+          
+          REACTIONS_COUNT=$(echo "$REACTIONS_DATA" | jq '. | length')
+          
+          # Check if issue was closed automatically (by checking if closed_by is a bot)
+          CLOSED_AUTOMATICALLY="false"
+          if [[ "$CLOSED_BY" == *"[bot]"* ]]; then
+            CLOSED_AUTOMATICALLY="true"
+          fi
+          
+          # Check if closed as duplicate by state_reason
+          CLOSED_AS_DUPLICATE="false"
+          if [ "$STATE_REASON" = "duplicate" ]; then
+            CLOSED_AS_DUPLICATE="true"
+          fi
+          
+          # Prepare the event payload
+          EVENT_PAYLOAD=$(jq -n \
+            --arg issue_number "$ISSUE_NUMBER" \
+            --arg repo "$REPO" \
+            --arg title "$ISSUE_TITLE" \
+            --arg closed_by "$CLOSED_BY" \
+            --arg closed_at "$CLOSED_AT" \
+            --arg state_reason "$STATE_REASON" \
+            --arg comments_count "$COMMENTS_COUNT" \
+            --arg reactions_count "$REACTIONS_COUNT" \
+            --arg closed_automatically "$CLOSED_AUTOMATICALLY" \
+            --arg closed_as_duplicate "$CLOSED_AS_DUPLICATE" \
+            '{
+              events: [{
+                eventName: "github_issue_closed",
+                value: 1,
+                metadata: {
+                  repository: $repo,
+                  issue_number: ($issue_number | tonumber),
+                  issue_title: $title,
+                  closed_by: $closed_by,
+                  closed_at: $closed_at,
+                  state_reason: $state_reason,
+                  comments_count: ($comments_count | tonumber),
+                  reactions_count: ($reactions_count | tonumber),
+                  closed_automatically: ($closed_automatically | test("true")),
+                  closed_as_duplicate: ($closed_as_duplicate | test("true"))
+                },
+                time: (now | floor | tostring)
+              }]
+            }')
+          
+          # Send to Statsig API
+          echo "Logging issue closure to Statsig for issue #${ISSUE_NUMBER}"
+          
+          RESPONSE=$(curl -s -w "\n%{http_code}" -X POST https://events.statsigapi.net/v1/log_event \
+            -H "Content-Type: application/json" \
+            -H "STATSIG-API-KEY: ${STATSIG_API_KEY}" \
+            -d "$EVENT_PAYLOAD")
+          
+          HTTP_CODE=$(echo "$RESPONSE" | tail -n1)
+          BODY=$(echo "$RESPONSE" | head -n-1)
+          
+          if [ "$HTTP_CODE" -eq 200 ] || [ "$HTTP_CODE" -eq 202 ]; then
+            echo "Successfully logged issue closure for issue #${ISSUE_NUMBER}"
+            echo "Closed by: $CLOSED_BY"
+            echo "Comments: $COMMENTS_COUNT"
+            echo "Reactions: $REACTIONS_COUNT"
+            echo "Closed automatically: $CLOSED_AUTOMATICALLY"
+            echo "Closed as duplicate: $CLOSED_AS_DUPLICATE"
+          else
+            echo "Failed to log issue closure for issue #${ISSUE_NUMBER}. HTTP ${HTTP_CODE}: ${BODY}"
+          fi

CHANGELOG.md

@@ -1,5 +1,38 @@
 # Changelog
 
+## 1.0.81
+
+- Released output styles, including new built-in educational output styles "Explanatory" and "Learning". Docs: https://docs.anthropic.com/en/docs/claude-code/output-styles
+- Agents: Fix custom agent loading when agent files are unparsable
+
+## 1.0.80
+
+- UI improvements: Fix text contrast for custom subagent colors and spinner rendering issues
+
+## 1.0.77
+
+- Bash tool: Fix heredoc and multiline string escaping, improve stderr redirection handling
+- SDK: Add session support and permission denial tracking
+- Fix token limit errors in conversation summarization
+- Opus Plan Mode: New setting in `/model` to run Opus only in plan mode, Sonnet otherwise
+
+## 1.0.73
+
+- MCP: Support multiple config files with `--mcp-config file1.json file2.json`
+- MCP: Press Esc to cancel OAuth authentication flows
+- Bash: Improved command validation and reduced false security warnings
+- UI: Enhanced spinner animations and status line visual hierarchy
+- Linux: Added support for Alpine and musl-based distributions (requires separate ripgrep installation)
+
+## 1.0.72
+
+- Ask permissions: have Claude Code always ask for confirmation to use specific tools with /permissions
+
+## 1.0.71
+
+- Background commands: (Ctrl-b) to run any Bash command in the background so Claude can keep working (great for dev servers, tailing logs, etc.)
+- Customizable status line: add your terminal prompt to Claude Code with /statusline
+
 ## 1.0.70
 
 - Performance: Optimized message rendering for better performance with large contexts

scripts/auto-close-duplicates.ts

@@ -10,6 +10,7 @@ interface GitHubIssue {
   number: number;
   title: string;
   user: { id: number };
+  created_at: string;
 }
 
 interface GitHubComment {
@@ -24,13 +25,16 @@ interface GitHubReaction {
   content: string;
 }
 
-async function githubRequest<T>(endpoint: string, token: string): Promise<T> {
+async function githubRequest<T>(endpoint: string, token: string, method: string = 'GET', body?: any): Promise<T> {
   const response = await fetch(`https://api.github.com${endpoint}`, {
+    method,
     headers: {
       Authorization: `Bearer ${token}`,
       Accept: "application/vnd.github.v3+json",
       "User-Agent": "auto-close-duplicates-script",
+      ...(body && { "Content-Type": "application/json" }),
     },
+    ...(body && { body: JSON.stringify(body) }),
   });
 
   if (!response.ok) {
@@ -42,6 +46,56 @@ async function githubRequest<T>(endpoint: string, token: string): Promise<T> {
   return response.json();
 }
 
+function extractDuplicateIssueNumber(commentBody: string): number | null {
+  // Try to match #123 format first
+  let match = commentBody.match(/#(\d+)/);
+  if (match) {
+    return parseInt(match[1], 10);
+  }
+  
+  // Try to match GitHub issue URL format: https://github.com/owner/repo/issues/123
+  match = commentBody.match(/github\.com\/[^\/]+\/[^\/]+\/issues\/(\d+)/);
+  if (match) {
+    return parseInt(match[1], 10);
+  }
+  
+  return null;
+}
+
+
+async function closeIssueAsDuplicate(
+  owner: string,
+  repo: string,
+  issueNumber: number,
+  duplicateOfNumber: number,
+  token: string
+): Promise<void> {
+  await githubRequest(
+    `/repos/${owner}/${repo}/issues/${issueNumber}`,
+    token,
+    'PATCH',
+    {
+      state: 'closed',
+      state_reason: 'duplicate',
+      labels: ['duplicate']
+    }
+  );
+
+  await githubRequest(
+    `/repos/${owner}/${repo}/issues/${issueNumber}/comments`,
+    token,
+    'POST',
+    {
+      body: `This issue has been automatically closed as a duplicate of #${duplicateOfNumber}.
+
+If this is incorrect, please re-open this issue or create a new one.
+
+🤖 Generated with [Claude Code](https://claude.ai/code)`
+    }
+  );
+
+}
+
 async function autoCloseDuplicates(): Promise<void> {
   console.log("[DEBUG] Starting auto-close duplicates script");
 
@@ -61,11 +115,32 @@ async function autoCloseDuplicates(): Promise<void> {
     `[DEBUG] Checking for duplicate comments older than: ${threeDaysAgo.toISOString()}`
   );
 
-  console.log("[DEBUG] Fetching open issues...");
+  console.log("[DEBUG] Fetching open issues created more than 3 days ago...");
-  const issues: GitHubIssue[] = await githubRequest(
+  const allIssues: GitHubIssue[] = [];
-    `/repos/${owner}/${repo}/issues?state=open&per_page=100`,
+  let page = 1;
-    token
+  const perPage = 100;
-  );
+  
+  while (true) {
+    const pageIssues: GitHubIssue[] = await githubRequest(
+      `/repos/${owner}/${repo}/issues?state=open&per_page=${perPage}&page=${page}`,
+      token
+    );
+    
+    if (pageIssues.length === 0) break;
+    
+    // Filter for issues created more than 3 days ago
+    const oldEnoughIssues = pageIssues.filter(issue => 
+      new Date(issue.created_at) <= threeDaysAgo
+    );
+    
+    allIssues.push(...oldEnoughIssues);
+    page++;
+    
+    // Safety limit to avoid infinite loops
+    if (page > 20) break;
+  }
+  
+  const issues = allIssues;
   console.log(`[DEBUG] Found ${issues.length} open issues`);
 
   let processedCount = 0;
@@ -165,11 +240,30 @@ async function autoCloseDuplicates(): Promise<void> {
       continue;
     }
 
+    const duplicateIssueNumber = extractDuplicateIssueNumber(lastDupeComment.body);
+    if (!duplicateIssueNumber) {
+      console.log(
+        `[DEBUG] Issue #${issue.number} - could not extract duplicate issue number from comment, skipping`
+      );
+      continue;
+    }
+
     candidateCount++;
     const issueUrl = `https://github.com/${owner}/${repo}/issues/${issue.number}`;
-    console.log(
+    
-      `[DRY RUN] Would auto-close issue #${issue.number} as duplicate: ${issueUrl}`
+    try {
-    );
+      console.log(
+        `[INFO] Auto-closing issue #${issue.number} as duplicate of #${duplicateIssueNumber}: ${issueUrl}`
+      );
+      await closeIssueAsDuplicate(owner, repo, issue.number, duplicateIssueNumber, token);
+      console.log(
+        `[SUCCESS] Successfully closed issue #${issue.number} as duplicate of #${duplicateIssueNumber}`
+      );
+    } catch (error) {
+      console.error(
+        `[ERROR] Failed to close issue #${issue.number} as duplicate: ${error}`
+      );
+    }
   }
 
   console.log(

scripts/backfill-duplicate-comments.ts

@@ -0,0 +1,213 @@
+#!/usr/bin/env bun
+
+declare global {
+  var process: {
+    env: Record<string, string | undefined>;
+  };
+}
+
+interface GitHubIssue {
+  number: number;
+  title: string;
+  state: string;
+  state_reason?: string;
+  user: { id: number };
+  created_at: string;
+  closed_at?: string;
+}
+
+interface GitHubComment {
+  id: number;
+  body: string;
+  created_at: string;
+  user: { type: string; id: number };
+}
+
+async function githubRequest<T>(endpoint: string, token: string, method: string = 'GET', body?: any): Promise<T> {
+  const response = await fetch(`https://api.github.com${endpoint}`, {
+    method,
+    headers: {
+      Authorization: `Bearer ${token}`,
+      Accept: "application/vnd.github.v3+json",
+      "User-Agent": "backfill-duplicate-comments-script",
+      ...(body && { "Content-Type": "application/json" }),
+    },
+    ...(body && { body: JSON.stringify(body) }),
+  });
+
+  if (!response.ok) {
+    throw new Error(
+      `GitHub API request failed: ${response.status} ${response.statusText}`
+    );
+  }
+
+  return response.json();
+}
+
+async function triggerDedupeWorkflow(
+  owner: string,
+  repo: string,
+  issueNumber: number,
+  token: string,
+  dryRun: boolean = true
+): Promise<void> {
+  if (dryRun) {
+    console.log(`[DRY RUN] Would trigger dedupe workflow for issue #${issueNumber}`);
+    return;
+  }
+
+  await githubRequest(
+    `/repos/${owner}/${repo}/actions/workflows/claude-dedupe-issues.yml/dispatches`,
+    token,
+    'POST',
+    {
+      ref: 'main',
+      inputs: {
+        issue_number: issueNumber.toString()
+      }
+    }
+  );
+}
+
+async function backfillDuplicateComments(): Promise<void> {
+  console.log("[DEBUG] Starting backfill duplicate comments script");
+
+  const token = process.env.GITHUB_TOKEN;
+  if (!token) {
+    throw new Error(`GITHUB_TOKEN environment variable is required
+
+Usage:
+  GITHUB_TOKEN=your_token bun run scripts/backfill-duplicate-comments.ts
+
+Environment Variables:
+  GITHUB_TOKEN - GitHub personal access token with repo and actions permissions (required)
+  DRY_RUN - Set to "false" to actually trigger workflows (default: true for safety)
+  MAX_ISSUE_NUMBER - Only process issues with numbers less than this value (default: 4050)`);
+  }
+  console.log("[DEBUG] GitHub token found");
+
+  const owner = "anthropics";
+  const repo = "claude-code";
+  const dryRun = process.env.DRY_RUN !== "false";
+  const maxIssueNumber = parseInt(process.env.MAX_ISSUE_NUMBER || "4050", 10);
+  const minIssueNumber = parseInt(process.env.MIN_ISSUE_NUMBER || "1", 10);
+  
+  console.log(`[DEBUG] Repository: ${owner}/${repo}`);
+  console.log(`[DEBUG] Dry run mode: ${dryRun}`);
+  console.log(`[DEBUG] Looking at issues between #${minIssueNumber} and #${maxIssueNumber}`);
+
+  console.log(`[DEBUG] Fetching issues between #${minIssueNumber} and #${maxIssueNumber}...`);
+  const allIssues: GitHubIssue[] = [];
+  let page = 1;
+  const perPage = 100;
+  
+  while (true) {
+    const pageIssues: GitHubIssue[] = await githubRequest(
+      `/repos/${owner}/${repo}/issues?state=all&per_page=${perPage}&page=${page}&sort=created&direction=desc`,
+      token
+    );
+    
+    if (pageIssues.length === 0) break;
+    
+    // Filter to only include issues within the specified range
+    const filteredIssues = pageIssues.filter(issue => 
+      issue.number >= minIssueNumber && issue.number < maxIssueNumber
+    );
+    allIssues.push(...filteredIssues);
+    
+    // If the oldest issue in this page is still above our minimum, we need to continue
+    // but if the oldest issue is below our minimum, we can stop
+    const oldestIssueInPage = pageIssues[pageIssues.length - 1];
+    if (oldestIssueInPage && oldestIssueInPage.number >= maxIssueNumber) {
+      console.log(`[DEBUG] Oldest issue in page #${page} is #${oldestIssueInPage.number}, continuing...`);
+    } else if (oldestIssueInPage && oldestIssueInPage.number < minIssueNumber) {
+      console.log(`[DEBUG] Oldest issue in page #${page} is #${oldestIssueInPage.number}, below minimum, stopping`);
+      break;
+    } else if (filteredIssues.length === 0 && pageIssues.length > 0) {
+      console.log(`[DEBUG] No issues in page #${page} are in range #${minIssueNumber}-#${maxIssueNumber}, continuing...`);
+    }
+    
+    page++;
+    
+    // Safety limit to avoid infinite loops
+    if (page > 200) {
+      console.log("[DEBUG] Reached page limit, stopping pagination");
+      break;
+    }
+  }
+  
+  console.log(`[DEBUG] Found ${allIssues.length} issues between #${minIssueNumber} and #${maxIssueNumber}`);
+
+  let processedCount = 0;
+  let candidateCount = 0;
+  let triggeredCount = 0;
+
+  for (const issue of allIssues) {
+    processedCount++;
+    console.log(
+      `[DEBUG] Processing issue #${issue.number} (${processedCount}/${allIssues.length}): ${issue.title}`
+    );
+
+    console.log(`[DEBUG] Fetching comments for issue #${issue.number}...`);
+    const comments: GitHubComment[] = await githubRequest(
+      `/repos/${owner}/${repo}/issues/${issue.number}/comments`,
+      token
+    );
+    console.log(
+      `[DEBUG] Issue #${issue.number} has ${comments.length} comments`
+    );
+
+    // Look for existing duplicate detection comments (from the dedupe bot)
+    const dupeDetectionComments = comments.filter(
+      (comment) =>
+        comment.body.includes("Found") &&
+        comment.body.includes("possible duplicate") &&
+        comment.user.type === "Bot"
+    );
+
+    console.log(
+      `[DEBUG] Issue #${issue.number} has ${dupeDetectionComments.length} duplicate detection comments`
+    );
+
+    // Skip if there's already a duplicate detection comment
+    if (dupeDetectionComments.length > 0) {
+      console.log(
+        `[DEBUG] Issue #${issue.number} already has duplicate detection comment, skipping`
+      );
+      continue;
+    }
+
+    candidateCount++;
+    const issueUrl = `https://github.com/${owner}/${repo}/issues/${issue.number}`;
+    
+    try {
+      console.log(
+        `[INFO] ${dryRun ? '[DRY RUN] ' : ''}Triggering dedupe workflow for issue #${issue.number}: ${issueUrl}`
+      );
+      await triggerDedupeWorkflow(owner, repo, issue.number, token, dryRun);
+      
+      if (!dryRun) {
+        console.log(
+          `[SUCCESS] Successfully triggered dedupe workflow for issue #${issue.number}`
+        );
+      }
+      triggeredCount++;
+    } catch (error) {
+      console.error(
+        `[ERROR] Failed to trigger workflow for issue #${issue.number}: ${error}`
+      );
+    }
+
+    // Add a delay between workflow triggers to avoid overwhelming the system
+    await new Promise(resolve => setTimeout(resolve, 1000));
+  }
+
+  console.log(
+    `[DEBUG] Script completed. Processed ${processedCount} issues, found ${candidateCount} candidates without duplicate comments, ${dryRun ? 'would trigger' : 'triggered'} ${triggeredCount} workflows`
+  );
+}
+
+backfillDuplicateComments().catch(console.error);
+
+// Make it a module
+export {};