chore: sync local config — caveman plugin, command/skill tweaks

- settings.json: enable caveman marketplace+plugin, effortLevel=high
- commands/git-branch + git-push: refactor docs
- skills/parallel-fix-issues: SKILL.md + scripts updates

.claude/skills/parallel-fix-issues/scripts/integrate-worktrees.sh

@@ -70,17 +70,21 @@ for slug in "$@"; do
 
   echo "MERGED: ${branch}"
 
-  # Verificar que master sigue compilando
-  echo "--- Verificando build post-merge ---"
-  if ! (cd "$REPO_ROOT" && go build -tags goolm ./... 2>&1); then
-    echo ""
-    echo "FAIL: master no compila después de mergear ${branch}"
-    echo "Revertir con: git reset --hard HEAD~1"
-    echo "Investigar el problema antes de continuar."
-    FAILED_AT="$slug"
-    break
+  # Verificar que master sigue compilando (si BUILD_CMD esta definido)
+  if [ -n "${BUILD_CMD:-}" ]; then
+    echo "--- Verificando build post-merge ($BUILD_CMD) ---"
+    if ! (cd "$REPO_ROOT" && bash -c "$BUILD_CMD" 2>&1); then
+      echo ""
+      echo "FAIL: master no compila despues de mergear ${branch}"
+      echo "Revertir con: git reset --hard HEAD~1"
+      echo "Investigar el problema antes de continuar."
+      FAILED_AT="$slug"
+      break
+    fi
+    echo "OK: build post-merge exitoso"
+  else
+    echo "--- Build post-merge SKIPPED (BUILD_CMD no definido) ---"
   fi
-  echo "OK: build post-merge exitoso"
 
   MERGED=$((MERGED + 1))
 done