Bug: CI Coach has no deduplication—posts duplicate comments on every workflow failure

[Jenp-AICraftWorks]

Problem

CI Coach posts redundant comments on PRs when TypeScript CI fails repeatedly, with no deduplication logic.

Root Cause

The workflow triggers on both push and pull_request events. When code fails, two parallel TypeScript CI runs complete and both trigger CI Coach. The script always calls octokit.issues.createComment() without checking for:

• Existing recent comments from the bot on the PR
• Duplicate analysis of the same failure
• Analyzed run IDs

Impact

Users see comment spam like this on PR #111 in AgentCraftworks-CE: 12 identical "No Specific Pattern Detected" comments in rapid bursts.

Suggested Fix

Add deduplication:

1. Check for existing CI Coach comments on the PR posted in the last 5 minutes
2. Skip if a duplicate exists
3. OR: Edit the most recent comment instead of creating a new one
4. Track analyzed run IDs to prevent re-analysis

Example Reproduction

Push failing code to a PR branch with 2+ commits. Watch CI Coach flood the PR with duplicate comments.

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Source Context: This workflow is used in https://github.com/AgentCraftworks/AgentCraftworks-CE and other repos.