refactor(06-02): update CLI and test imports to kb_workflow.pipeline

- Remove sys.path manipulation from kb_workflow.py
- Update CLI imports to use kb_workflow.pipeline prefix
- Update all test file imports and patch paths

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/test_pipeline/test_idempotency.py

@@ -15,7 +15,7 @@ class TestIdempotencyChecker:
 
     def test_check_exists_returns_true_when_files_exist(self, tmp_path):
         """Test 1: 文件存在时 check_exists 返回 (True, [file_list])"""
-        from kb_pipeline.idempotency import IdempotencyChecker
+        from kb_workflow.pipeline.idempotency import IdempotencyChecker
 
         # Create output directory with expected files
         output_dir = tmp_path / "bilibili"
@@ -41,7 +41,7 @@ class TestIdempotencyChecker:
 
     def test_check_exists_returns_false_when_files_not_exist(self, tmp_path):
         """Test 2: 文件不存在时 check_exists 返回 (False, [])"""
-        from kb_pipeline.idempotency import IdempotencyChecker
+        from kb_workflow.pipeline.idempotency import IdempotencyChecker
 
         output_dir = tmp_path / "bilibili"
         output_dir.mkdir()
@@ -57,7 +57,7 @@ class TestIdempotencyChecker:
 
     def test_check_exists_returns_partial_files_when_some_exist(self, tmp_path):
         """Test 3: 部分文件存在时返回正确的存在文件列表"""
-        from kb_pipeline.idempotency import IdempotencyChecker
+        from kb_workflow.pipeline.idempotency import IdempotencyChecker
 
         output_dir = tmp_path / "zhihu"
         output_dir.mkdir()
@@ -80,7 +80,7 @@ class TestIdempotencyChecker:
 
     def test_check_exists_creates_directory_if_not_exists(self, tmp_path):
         """如果输出目录不存在，check_exists 应该返回 False"""
-        from kb_pipeline.idempotency import IdempotencyChecker
+        from kb_workflow.pipeline.idempotency import IdempotencyChecker
 
         output_dir = tmp_path / "new_platform"  # Directory doesn't exist
         content_id = "BV1test123"
@@ -98,7 +98,7 @@ class TestIdempotencyCheckerFileNaming:
 
     def test_bilibili_file_naming(self, tmp_path):
         """测试B站文件的命名格式"""
-        from kb_pipeline.idempotency import IdempotencyChecker
+        from kb_workflow.pipeline.idempotency import IdempotencyChecker
 
         output_dir = tmp_path / "bilibili"
         output_dir.mkdir()
@@ -121,7 +121,7 @@ class TestIdempotencyCheckerFileNaming:
 
     def test_zhihu_file_naming(self, tmp_path):
         """测试知乎文件的命名格式"""
-        from kb_pipeline.idempotency import IdempotencyChecker
+        from kb_workflow.pipeline.idempotency import IdempotencyChecker
 
         output_dir = tmp_path / "zhihu"
         output_dir.mkdir()
@@ -148,7 +148,7 @@ class TestIdempotencyCheckerEdgeCases:
 
     def test_check_exists_with_empty_content_id(self, tmp_path):
         """空content_id应该返回False"""
-        from kb_pipeline.idempotency import IdempotencyChecker
+        from kb_workflow.pipeline.idempotency import IdempotencyChecker
 
         output_dir = tmp_path / "bilibili"
         output_dir.mkdir()
@@ -161,7 +161,7 @@ class TestIdempotencyCheckerEdgeCases:
 
     def test_check_exists_with_special_characters_in_id(self, tmp_path):
         """ID中包含特殊字符时的处理"""
-        from kb_pipeline.idempotency import IdempotencyChecker
+        from kb_workflow.pipeline.idempotency import IdempotencyChecker
 
         output_dir = tmp_path / "bilibili"
         output_dir.mkdir()