dev-inf: Improve AI review workflow based on feedback

This commit addresses feedback on the three-stage Claude Code PR
review workflow:

1. Added 60-minute timeout to prevent jobs from running indefinitely
   (previous run exceeded 2.5 hours before being cancelled).

2. Skip workflow entirely if PR is already merged. The workflow now
   checks github.event.pull_request.merged in the job condition to
   prevent unnecessary runs on merged PRs.

3. Removed 'labeled' from trigger types. Since the workflow now runs
   by default (not triggered by labels), changing labels on a PR
   should not trigger new workflow runs.

4. Added guidance in PR comment to help users navigate verbose output.
   Users are now directed to scroll to the bottom of the workflow run
   to find the Final Analysis Summary, making it easier to locate the
   relevant findings among the three-stage output.

Release note: none

Epic: None

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

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

Author: ajstorm

.github/workflows/pr-analyzer-threestage.yml

@@ -2,12 +2,13 @@ name: Claude Code PR Review
 
 on:
   pull_request_target:
-    types: [synchronize, ready_for_review, reopened, labeled]
+    types: [synchronize, ready_for_review, reopened]
 
 jobs:
   claude-code-pr-review:
     runs-on: ubuntu-latest
-    if: "!startsWith(github.base_ref, 'release-') && !contains(github.event.pull_request.labels.*.name, 'O-No-AI-Review')"
+    timeout-minutes: 60
+    if: "!startsWith(github.base_ref, 'release-') && !contains(github.event.pull_request.labels.*.name, 'O-No-AI-Review') && github.event.pull_request.merged == false"
     permissions:
       contents: read
       pull-requests: write
@@ -237,8 +238,10 @@ jobs:
           **Next Steps:**
           Please review the detailed findings in the [workflow run](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}).
 
+          **Note:** When viewing the workflow output, scroll to the bottom to find the Final Analysis Summary.
+
           After you review the findings, please tag the issue as follows:
           - If the detected issue is real or was helpful in any way, please tag the issue with \`O-AI-Review-Real-Issue-Found\`
           - If the detected issue was not helpful in any way, please tag the issue with \`O-AI-Review-Not-Helpful\`"
 
-          gh pr edit ${{ github.event.pull_request.number }} --add-label "o-AI-Review-Potential-Issue-Detected"
+          gh pr edit ${{ github.event.pull_request.number }} --add-label "o-AI-Review-Potential-Issue-Detected"