Generator: pilot analysis and fixes; G0002-G0021 tasks; handover notes merged

- Static bundle checks (name length, seed type, reserved words, contract test classes,
  testclasses_file), local abaplint parser check before SAP, max_tokens, robust JSON parse
- Runner: G2 for CDS views with parameters, contract_check detail in report
- G0020 and G0013 fixed by review and revalidated (oracle 100, null 0)
- Pilot results in docs/faz1-tasarim.md 11e; handover notes merged into CLAUDE.md and docs

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tasks_gen/eval/G0006/seed/freight_calculator.clas.abap

@@ -0,0 +1,106 @@
+CLASS {{p}}freight_calculator DEFINITION PUBLIC FINAL CREATE PUBLIC.
+  PUBLIC SECTION.
+    TYPES:
+      BEGIN OF ty_result,
+        status    TYPE c LENGTH 10,
+        base      TYPE p LENGTH 9 DECIMALS 2,
+        surcharge TYPE p LENGTH 9 DECIMALS 2,
+        total     TYPE p LENGTH 9 DECIMALS 2,
+      END OF ty_result.
+
+    CONSTANTS:
+      BEGIN OF c_status,
+        ok     TYPE c LENGTH 10 VALUE 'OK',
+        weight TYPE c LENGTH 10 VALUE 'WEIGHT',
+        zone   TYPE c LENGTH 10 VALUE 'ZONE',
+      END OF c_status.
+
+    METHODS calculate
+      IMPORTING
+        iv_weight_kg     TYPE p LENGTH 8 DECIMALS 2
+        iv_zone          TYPE string
+        iv_express       TYPE abap_bool DEFAULT abap_false
+      RETURNING
+        VALUE(rs_result) TYPE ty_result.
+
+    METHODS is_zone_supported
+      IMPORTING
+        iv_zone             TYPE string
+      RETURNING
+        VALUE(rv_supported) TYPE abap_bool.
+
+  PRIVATE SECTION.
+    DATA mv_last_zone TYPE string.
+    CONSTANTS c_express_share TYPE p LENGTH 5 DECIMALS 2 VALUE '0.25'.
+ENDCLASS.
+
+
+CLASS {{p}}freight_calculator IMPLEMENTATION.
+  METHOD calculate.
+    DATA lv_zone TYPE string.
+    DATA lv_rate TYPE p LENGTH 6 DECIMALS 2.
+    DATA lv_amount TYPE p LENGTH 13 DECIMALS 4.
+    DATA lv_express TYPE abap_bool.
+
+    lv_zone = to_upper( replace( val = iv_zone sub = ` ` with = `` occ = 0 ) ).
+    mv_last_zone = lv_zone.
+
+    IF iv_weight_kg <= 0.
+      rs_result-status = 'WEIGHT'.
+      rs_result-base = 0.
+      rs_result-surcharge = 0.
+      rs_result-total = 0.
+      RETURN.
+    ENDIF.
+
+*    IF lv_zone = 'BE'.
+*      lv_rate = '5.60'.
+*    ENDIF.
+    IF lv_zone = 'DE'.
+      lv_rate = '4.50'.
+    ELSEIF lv_zone = 'AT'.
+      lv_rate = '5.20'.
+    ELSEIF lv_zone = 'CH'.
+      lv_rate = '7.80'.
+    ELSEIF lv_zone = 'FR'.
+      lv_rate = '6.40'.
+    ELSEIF lv_zone = 'NL'.
+      lv_rate = '4.90'.
+    ELSEIF lv_zone = 'PL'.
+      lv_rate = '5.10'.
+    ELSEIF lv_zone = 'ES'.
+      lv_rate = '6.90'.
+    ELSE.
+      rs_result-status = 'ZONE'.
+      rs_result-base = 0.
+      rs_result-surcharge = 0.
+      rs_result-total = 0.
+      RETURN.
+    ENDIF.
+
+    lv_amount = lv_rate * iv_weight_kg.
+    rs_result-base = round( val = lv_amount dec = 2 ).
+
+    lv_express = iv_express.
+    IF lv_express = abap_true.
+      lv_amount = rs_result-base * c_express_share.
+      rs_result-surcharge = round( val = lv_amount dec = 2 ).
+    ELSE.
+      rs_result-surcharge = 0.
+    ENDIF.
+
+    rs_result-total = rs_result-base + rs_result-surcharge.
+    rs_result-status = 'OK'.
+  ENDMETHOD.
+
+  METHOD is_zone_supported.
+    DATA lv_zone TYPE string.
+    lv_zone = to_upper( replace( val = iv_zone sub = ` ` with = `` occ = 0 ) ).
+    IF lv_zone = 'DE' OR lv_zone = 'AT' OR lv_zone = 'CH' OR lv_zone = 'FR'
+       OR lv_zone = 'NL' OR lv_zone = 'PL' OR lv_zone = 'ES'.
+      rv_supported = abap_true.
+    ELSE.
+      rv_supported = abap_false.
+    ENDIF.
+  ENDMETHOD.
+ENDCLASS.

tasks_gen/eval/G0006/seed/freight_calculator.testclasses.abap

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+CLASS ltc_legacy_freight DEFINITION FINAL FOR TESTING DURATION SHORT RISK LEVEL HARMLESS.
+  PRIVATE SECTION.
+    METHODS base_parcel FOR TESTING.
+    METHODS express_parcel FOR TESTING.
+ENDCLASS.
+
+
+CLASS ltc_legacy_freight IMPLEMENTATION.
+  METHOD base_parcel.
+    DATA(lo_cut) = NEW {{p}}freight_calculator( ).
+    cl_abap_unit_assert=>assert_equals(
+      exp = VALUE {{p}}freight_calculator=>ty_result( status = 'OK' base = '45.00' total = '45.00' )
+      act = lo_cut->calculate( iv_weight_kg = '10.00' iv_zone = `DE` ) ).
+  ENDMETHOD.
+
+  METHOD express_parcel.
+    DATA(lo_cut) = NEW {{p}}freight_calculator( ).
+    cl_abap_unit_assert=>assert_equals(
+      exp = VALUE {{p}}freight_calculator=>ty_result( status    = 'OK'
+                                                     base      = '45.00'
+                                                     surcharge = '11.25'
+                                                     total     = '56.25' )
+      act = lo_cut->calculate( iv_weight_kg = '10.00' iv_zone = `DE` iv_express = abap_true ) ).
+  ENDMETHOD.
+ENDCLASS.