fix: extract response time metrics from markdown tables

- Use direct grep for 'Time to first response' and 'Time to close' table rows
- Parse table columns with awk -F'|' to get actual time values
- Should now show response times instead of N/A

.github/workflows/weekly-metrics-discord.yml

@@ -49,8 +49,8 @@ jobs:
           # Parse the metrics from the generated markdown files
           if [ -f "issue_metrics.md" ]; then
             # Extract key metrics using grep/awk
-            AVG_TIME_TO_FIRST_RESPONSE=$(grep -A 1 "Average time to first response" issue_metrics.md | tail -1 | awk '{print $3}' || echo "N/A")
-            AVG_TIME_TO_CLOSE=$(grep -A 1 "Average time to close" issue_metrics.md | tail -1 | awk '{print $3}' || echo "N/A")
+            AVG_TIME_TO_FIRST_RESPONSE=$(grep "Time to first response" issue_metrics.md | awk -F'|' '{print $3}' | xargs || echo "N/A")
+            AVG_TIME_TO_CLOSE=$(grep "Time to close" issue_metrics.md | awk -F'|' '{print $3}' | xargs || echo "N/A")
             NUM_ISSUES_CREATED=$(grep "Total number of items created" issue_metrics.md | awk -F'|' '{print $3}' | xargs || echo "0")
             NUM_ISSUES_CLOSED=$(grep "Number of items closed" issue_metrics.md | awk -F'|' '{print $3}' | xargs || echo "0")
           else
@@ -61,7 +61,7 @@ jobs:
           fi
 
           if [ -f "pr_metrics.md" ]; then
-            PR_AVG_TIME_TO_MERGE=$(grep -A 1 "Average time to close" pr_metrics.md | tail -1 | awk '{print $3}' || echo "N/A")
+            PR_AVG_TIME_TO_MERGE=$(grep "Time to close" pr_metrics.md | awk -F'|' '{print $3}' | xargs || echo "N/A")
             NUM_PRS_CREATED=$(grep "Total number of items created" pr_metrics.md | awk -F'|' '{print $3}' | xargs || echo "0")
             NUM_PRS_MERGED=$(grep "Number of items closed" pr_metrics.md | awk -F'|' '{print $3}' | xargs || echo "0")
           else