diff --git a/scripts/ci/validate_code_quality.sh b/scripts/ci/validate_code_quality.sh
index ce67490eb..874c9c6cf 100644
--- a/scripts/ci/validate_code_quality.sh
+++ b/scripts/ci/validate_code_quality.sh
@@ -56,95 +56,18 @@ for fpath, items in data.get('results', {}).items():
 fi
 echo "✅ Secret scan passed"
 
-# --- 增量/全量模式判断 ---
+# --- 代码质量检查（全量，PR 和 push 统一标准）---
+# 历史：PR 侧用增量检查以加速，但会导致 push 侧全量检查失败时 PR 侧感知不到
+# 现在统一全量检查，确保 CI 真正保护主分支（black/isort/ruff 全量仅多几十秒）
 echo ""
-echo "=== [2/6] Code quality checks ==="
+echo "=== [2/6] Code quality checks (full scan) ==="
 SCAN_MODE="full"
-CHANGED_PY_FILES=""
+echo "Full scan mode"
+python3 -m compileall -q alembic apps packages tests scripts
+python3 -m black --check --fast alembic apps packages tests scripts
+python3 -m isort --check-only alembic apps packages tests scripts
+python3 -m ruff check apps packages tests --statistics
 
-if [ "${GITHUB_EVENT_NAME:-}" = "pull_request" ] && [ -n "${GITHUB_REF_NAME:-}" ] && [ -n "${GITHUB_TOKEN:-}" ]; then
-  PR_NUMBER=$(echo "$GITHUB_REF" | sed 's|refs/pull/||; s|/.*||')
-  API_URL="${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/pulls/${PR_NUMBER}/files?limit=100"
-  set +e
-  RESPONSE=$(curl -s -w "\n%{http_code}" -H "Authorization: token ${GITHUB_TOKEN}" "$API_URL")
-  HTTP_CODE=$(echo "$RESPONSE" | tail -n1)
-  BODY=$(echo "$RESPONSE" | sed '$d')
-  set -e
-  if [ "$HTTP_CODE" = "200" ]; then
-    CHANGED_PY_FILES=$(echo "$BODY" | python3 -c "
-import json, sys
-try:
-    files = json.load(sys.stdin)
-    py_files = [f['filename'] for f in files if f['filename'].endswith('.py') and f['status'] != 'removed']
-    print(' '.join(py_files))
-except Exception:
-    print('')
-")
-    # 新增文件(added)强制全量检查，防止增量漏检
-    ADDED_PY_FILES=$(echo "$BODY" | python3 -c "
-import json, sys
-try:
-    files = json.load(sys.stdin)
-    added = [f['filename'] for f in files if f['filename'].endswith('.py') and f['status'] == 'added']
-    print(' '.join(added))
-except Exception:
-    print('')
-")
-    MODIFIED_PY_FILES=$(echo "$BODY" | python3 -c "
-import json, sys
-try:
-    files = json.load(sys.stdin)
-    modified = [f['filename'] for f in files if f['filename'].endswith('.py') and f['status'] not in ('removed', 'added')]
-    print(' '.join(modified))
-except Exception:
-    print('')
-")
-    if [ -n "$CHANGED_PY_FILES" ]; then
-      SCAN_MODE="incremental"
-      echo "Incremental mode: $(echo "$CHANGED_PY_FILES" | wc -w) Python files changed"
-    else
-      SCAN_MODE="skip_py"
-      echo "No Python files changed in this PR"
-    fi
-  else
-    echo "WARN: API returned HTTP $HTTP_CODE, falling back to full scan"
-  fi
-else
-  echo "Full scan mode (not a PR event)"
-fi
-
-if [ "$SCAN_MODE" = "incremental" ]; then
-  # 防御性过滤
-  EXISTING_PY_FILES=""
-  for f in $CHANGED_PY_FILES; do
-    if [ -f "$f" ]; then
-      if [ -z "$EXISTING_PY_FILES" ]; then
-        EXISTING_PY_FILES="$f"
-      else
-        EXISTING_PY_FILES="$EXISTING_PY_FILES $f"
-      fi
-    fi
-  done
-  CHANGED_PY_FILES="$EXISTING_PY_FILES"
-
-  python3 -m compileall -q $CHANGED_PY_FILES
-  python3 -m black --check --fast $CHANGED_PY_FILES
-  python3 -m isort --check-only $CHANGED_PY_FILES
-  RUFF_FILES=$(echo "$CHANGED_PY_FILES" | tr ' ' '\n' | grep -v '^scripts/' | grep -v '^$' | xargs)
-  if [ -n "$RUFF_FILES" ]; then
-    python3 -m ruff check $RUFF_FILES --statistics
-  else
-    echo "No ruff-checkable files changed, skipping"
-  fi
-elif [ "$SCAN_MODE" = "skip_py" ]; then
-  echo "No Python files changed - skipping Python lint checks"
-else
-  echo "Full scan mode"
-  python3 -m compileall -q alembic apps packages tests scripts
-  python3 -m black --check --fast alembic apps packages tests scripts
-  python3 -m isort --check-only alembic apps packages tests scripts
-  python3 -m ruff check apps packages tests --statistics
-fi
 echo "✅ Code quality checks passed"
 
 # --- Bandit 安全扫描（仅告警） ---
diff --git a/tests/unit/test_bgm_utils.py b/tests/unit/test_bgm_utils.py
index c1cd83ea5..9b7c36ad6 100755
--- a/tests/unit/test_bgm_utils.py
+++ b/tests/unit/test_bgm_utils.py
@@ -11,8 +11,7 @@ class TestMergeBgmConfigBothEmpty:
     def test_both_empty(self):
         result = merge_bgm_config({}, {})
         assert result == {}
-        # 确保返回的是新字典，不是同一个引用
-        assert result is not {}
+        # 返回新字典（值已通过 == 验证，is not {} 无实际意义（每次{}每次新建对象）
 
     def test_user_none_returns_template_copy(self):
         """用户传 None 视为空配置，返回模板副本。"""
diff --git a/tests/unit/test_classification_domain.py b/tests/unit/test_classification_domain.py
index 5219983f9..7bdc90ec8 100755
--- a/tests/unit/test_classification_domain.py
+++ b/tests/unit/test_classification_domain.py
@@ -245,7 +245,7 @@ class TestClassificationJobState:
         assert job.confidence == 1.0
 
 
-class TestClassificationJobStatusMissing:
+class TestClassificationJobStatusMissingAliases:
     """ClassificationJobStatus._missing_ 兼容行为测试"""
 
     def test_done_maps_to_completed(self):