fix(qa-gather): deterministic script discovery without head pipeline

Replace the find|head -n1 alternation with one find per script name,
preferring jira-qa-gather.py over the legacy qa-gather.py regardless
of filesystem order, and use -type f -print -quit so find stops at the
first match - no pipeline, hence no SIGPIPE/141 risk under pipefail.

Signed-off-by: Sebastian Mendel <github@sebastianmendel.de>

Author: CybotTM

skills/peer-qa-review/scripts/qa-gather.sh

@@ -31,15 +31,22 @@ find_qa_gather() {
         "${HOME}/.claude/plugins/cache/netresearch-claude-code-marketplace/jira-integration"
         "${HOME}/.claude/plugins/cache"
     )
-    local p
+    # Prefer the current script name (jira-integration >= 3.13) over the
+    # legacy one, deterministically: one find per name, first match wins.
+    # `-print -quit` stops at the first hit — no `| head` pipeline, so no
+    # SIGPIPE risk under `set -o pipefail`.
+    local p name found
     for p in "${search_paths[@]}"; do
         [[ -z "$p" ]] && continue
-        local found
-        found=$(find "$p" -maxdepth 6 \( -path '*/skills/jira-communication/scripts/utility/jira-qa-gather.py' -o -path '*/skills/jira-communication/scripts/utility/qa-gather.py' \) 2>/dev/null | head -n1)
-        if [[ -n "$found" ]]; then
-            echo "$found"
-            return 0
-        fi
+        for name in jira-qa-gather.py qa-gather.py; do
+            found=$(find "$p" -maxdepth 6 -type f \
+                -path "*/skills/jira-communication/scripts/utility/${name}" \
+                -print -quit 2>/dev/null) || true
+            if [[ -n "$found" ]]; then
+                echo "$found"
+                return 0
+            fi
+        done
     done
     return 1
 }