feat: Phase 2 complete — 13 Phases of COBOL type classification and test benchmark

P0.6: gcov infrastructure
P1: extract_structure output expansion (11 new feature fields)
P2: Confusion group rule engine (8 pairs + contradiction + backtrack)
P3: 4-factor confidence calculation + quality gate update
P4: 33+2 COBOL program type test samples (22 files, 7 categories)
P5: parametrized/ test data generation engine
P6: japanese_data.py lookup tables
P7-10: Type-specific test suites (~159 parametrized tests)
P11: Full classification pipeline (classify_program) + orchestrator integration
P12: Documentation (module-interfaces, test-plan v3.0, coverage-matrix)

Architecture decisions:
- classification_pipeline/ merged to hina/pipeline/
- parametrized/ as independent module
- japanese_data.py as root-level file
- hina/__all__ only exports classify_program()

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

cobol_testgen/read.py

@@ -388,17 +388,32 @@ def parse_data_division(data_div_text: str) -> list[FieldDef]:
 
 
 def parse_file_control(source: str) -> dict:
-    """?? FILE-CONTROL??? {?????: ?????}"""
+    """Parse FILE-CONTROL paragraph.
+
+    Returns dict:
+        {filename: {"assign_to": str, "organization": str | None}}
+    """
     m = re.search(r'FILE-CONTROL\.(.*?)(?=DATA\s+DIVISION|\Z)', source, re.DOTALL | re.IGNORECASE)
     if not m:
         return {}
     fc = m.group(1)
     result = {}
-    for m in re.finditer(
+    for sel_m in re.finditer(
         r'SELECT\s+(\w[\w-]*)\s+[^.]*?\bASSIGN\s+TO\s+(["\'])(.*?)\2',
         fc, re.IGNORECASE
     ):
-        result[m.group(1).upper()] = m.group(3).upper()
+        fname = sel_m.group(1).upper()
+        assign_to = sel_m.group(3).upper()
+        # Extract ORGANIZATION clause within this SELECT statement
+        org_m = re.search(
+            r'ORGANIZATION\s+(?:IS\s+)?(\w[\w-]*)',
+            sel_m.group(0), re.IGNORECASE
+        )
+        org = org_m.group(1).upper() if org_m else None
+        result[fname] = {
+            "assign_to": assign_to,
+            "organization": org,
+        }
     return result