[Internal] Docs: Update PR monitoring frequency to 5-10 minutes (#5603)

## Description

🤖 **This PR was authored by GitHub Copilot**

Updates PR monitoring guidance to specify consistent 5-10 minute
intervals for both CI and review comment checks.

## Changes

**Before:**
```yaml
frequency: "Check every session or when user requests status"
```

**After:**
```yaml
frequency: "Every 5-10 minutes while session is active"

monitoring_loop:
  interval: "5-10 minutes"
  check_ci: "gh pr checks {pr_number}"
  check_comments: "gh api .../pulls/{pr_number}/comments"
  check_reviews: "gh pr view {pr_number} --json reviews,reviewDecision"
```

## Why
- Consistent monitoring frequency for CI and comments
- Clear commands for each check type
- Explicit actions for each monitoring outcome

---
*Generated by GitHub Copilot CLI Agent*

Author: kirankumarkolli

.github/agents/issue-fix-agent.agent.md

@@ -4315,9 +4315,18 @@ pr_review_monitoring:
   
   when_to_monitor:
     trigger: "After PR is marked ready for review"
-    frequency: "Check every session or when user requests status"
+    frequency: "Every 5-10 minutes while session is active"
     until: "PR is merged OR closed"
     
+  monitoring_loop:
+    interval: "5-10 minutes"
+    check_ci: "gh pr checks {pr_number}"
+    check_comments: "gh api repos/{owner}/{repo}/pulls/{pr_number}/comments --jq '.[].created_at' | Select-Object -Last 1"
+    check_reviews: "gh pr view {pr_number} --json reviews,reviewDecision"
+    on_new_comment: "Read comment, address feedback, push fix, reply with commit SHA"
+    on_ci_failure: "Investigate, fix, push"
+    on_approval: "Merge or wait for additional approvals"
+    
   check_for_reviews:
     command: "gh pr view {pr_number} --json reviews,reviewRequests,comments"
     also_check: "gh pr view {pr_number} --json reviewDecision"