fix(ci): retire conflicting labels on re-triage

Claude-Session: https://claude.ai/code/session_01AGgakTTTYXR67JtMxubBUS

Author: DaleSeo

.github/workflows/triage.yml

@@ -304,10 +304,39 @@ jobs:
             exit 1
           fi
 
+          # Type, priority and workflow are mutually exclusive, so a re-triage has to
+          # retire the previous verdict. Components are additive and left alone.
+          gh issue view "$ISSUE" --json labels --jq '.labels[].name' > current.txt
+          new_type="$(jq -r '.type' <<< "$json")"
+          new_priority="$(jq -r '.priority' <<< "$json")"
+          new_workflow="$(jq -r '.workflow // empty' <<< "$json")"
+
+          stale=()
+          while IFS= read -r label; do
+            case "$label" in
+              bug|enhancement|question)
+                if [ "$label" != "$new_type" ]; then stale+=("$label"); fi ;;
+              P0|P1|P2|P3)
+                if [ "$label" != "$new_priority" ]; then stale+=("$label"); fi ;;
+              "needs confirmation"|"needs repro"|"ready for work")
+                if [ -n "$new_workflow" ] && [ "$label" != "$new_workflow" ]; then
+                  stale+=("$label")
+                fi ;;
+            esac
+          done < current.txt
+
           args=()
           for label in "${valid[@]}"; do
             args+=(--add-label "$label")
           done
+          for label in ${stale[@]+"${stale[@]}"}; do
+            args+=(--remove-label "$label")
+          done
           gh issue edit "$ISSUE" "${args[@]}"
 
-          echo "Labeled #$ISSUE: ${valid[*]}" >> "$GITHUB_STEP_SUMMARY"
+          {
+            echo "Labeled #$ISSUE: ${valid[*]}"
+            if [ "${#stale[@]}" -gt 0 ]; then
+              echo "Removed: ${stale[*]}"
+            fi
+          } >> "$GITHUB_STEP_SUMMARY"