fix: code review issues #1-#9

1. cond.py: 删除重复裸字段代码块 (dedup bare field)
2. coverage.py: 移除_mark_perform无条件fallback (虚假覆盖)
3. pipeline_bridge.py: except:pass加日志记录异常
4. __init__.py: generate_data文档更新 (copybook_dirs等)
5. cond.py: is_field贪婪→非贪婪.*→.*?
6. coverage.py: 移除残留无条件Enter+Skip标记

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

cobol_testgen/__init__.py

@@ -942,9 +942,11 @@ def generate_data(cobol_source: str, structure: dict = None,
 
     Args:
         cobol_source: COBOL 程序原始源码文本（未预处理）。
-                       内部会调 preprocess + resolve_copybooks。
-                       如果已预处理过，传进来会因 COPYBOOK 路径丢失导致字段不全。
+                       内部会调 preprocess + resolve_copybooks + resolve_sql_includes。
+                       如果已预处理过，传进来会因字段列表不全导致数据不完整。
+                       COPYBOOK 路径通过 copybook_dirs 参数传入。
         structure: 可选，如果已调用 extract_structure() 可传入避免重复解析
+        copybook_dirs: 可选，COPYBOOK 搜索路径列表。指定后可自动展开 COPY 和 EXEC SQL INCLUDE。
 
     Returns:
         list[dict]: 测试数据记录列表，每条包含所有字段的值

cobol_testgen/cond.py

@@ -269,7 +269,7 @@ def evaluate_tree(tree, assignment):
 
 def is_field(name, fields):
     # Strip subscript: WS-ITEM-STATUS(WS-INDEX-VAR) -> WS-ITEM-STATUS
-    bare = re.sub(r'\s*\(.*\)\s*$', '', name).strip()
+    bare = re.sub(r'\s*\(.*?\)\s*$', '', name).strip()
     for f in fields:
         if f['name'] == bare.upper():
             return True

cobol_testgen/coverage.py

@@ -410,9 +410,10 @@ def _mark_perform(dp, cons):
                 else:
                     dp.active_branches.add('Enter')
 
-    if len(dp.active_branches) < 2:
-        dp.active_branches.add('Enter')
-        dp.active_branches.add('Skip')
+    # No unconditional fallback — coverage must come from actual constraint matching
+    # If __DP synthetic constraint exists, it was handled above; if parsed matching
+    # fails, this PERFORM stays uncovered — honest reporting is better than false 100%
+    pass
 
 
 def _get_fields_in_cond(cond_text):

cobol_testgen/pipeline_bridge.py

@@ -4,7 +4,10 @@ Primary: new procedure_parser (fast, deterministic, no path explosion).
 Fallback: old BrParser (timeout-guarded for programs new parser can't handle).
 """
 
+import logging
 from .models import BrSeq, BrIf, BrEval, BrPerform, BrSearch, GoTo
+
+logger = logging.getLogger(__name__)
 from .procedure_parser import extract_branch_tree as new_parse, BranchNode
 
 
@@ -18,7 +21,8 @@ def build_branch_tree_fallback(proc_text, fields=None):
         root, assigns_list = new_parse(proc_text, fields)
         new_tree = _convert_to_model(root)
         new_assigns = _assigns_list_to_dict(assigns_list)
-    except Exception:
+    except Exception as e:
+        logger.warning(f"New parser failed: {e}")
         pass
 
     # New parser generates O(N) paths (not O(2^N)), so no cap needed.
@@ -42,7 +46,8 @@ def build_branch_tree_fallback(proc_text, fields=None):
         if d[0] and not e[0] and r[0]:
             ot, oa = r[0]
             old_tree, old_assigns = ot, oa
-    except Exception:
+    except Exception as e:
+        logger.warning(f"Old parser fallback failed: {e}")
         pass
 
     if old_tree is not None: