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>

test-data/cobol/category_cics/CI01_CICS.cbl

@@ -0,0 +1,31 @@
+      * ==== TYPE: CI01 CICS ====
+      *> FEATURE: DFHCOMMAREA + MAP simulation
+      *> NOTE: CICS keywords marked with *> not for compilation
+       IDENTIFICATION DIVISION.
+       PROGRAM-ID. CI01.
+       ENVIRONMENT DIVISION.
+       DATA DIVISION.
+       WORKING-STORAGE SECTION.
+       01 WS-COMMAREA.
+          05 WS-CA-LENGTH  PIC S9(4) COMP.
+          05 WS-CA-DATA    PIC X(100).
+       01 WS-MAP-RECV.
+          05 WS-MAP-INPUT  PIC X(50).
+       01 WS-MAP-SEND.
+          05 WS-MAP-OUTPUT PIC X(50).
+       01 WS-RESPONSE      PIC S9(8) COMP.
+       PROCEDURE DIVISION.
+      *>    EXEC CICS RECEIVE MAP('MAP01')
+      *>        INTO(WS-MAP-RECV)
+      *>        RESP(WS-RESPONSE)
+      *>    END-EXEC.
+           DISPLAY 'RECEIVED MAP'.
+      *>    EXEC CICS SEND MAP('MAP01')
+      *>        FROM(WS-MAP-SEND)
+      *>        RESP(WS-RESPONSE)
+      *>    END-EXEC.
+           DISPLAY 'SENT MAP'.
+      *>    EXEC CICS RETURN
+      *>        COMMAREA(WS-COMMAREA)
+      *>    END-EXEC.
+           STOP RUN.