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/G0005/reference/freight_calc.clas.abap

@@ -0,0 +1,73 @@
+CLASS {{p}}freight_calc DEFINITION PUBLIC FINAL CREATE PUBLIC.
+  PUBLIC SECTION.
+    TYPES ty_cost TYPE p LENGTH 15 DECIMALS 2.
+    TYPES ty_weight TYPE p LENGTH 15 DECIMALS 3.
+    TYPES: BEGIN OF ty_result,
+             cost     TYPE ty_cost,
+             currency TYPE c LENGTH 5,
+           END OF ty_result.
+
+    METHODS calculate
+      IMPORTING iv_zone_code     TYPE c LENGTH 4
+                iv_weight_kg     TYPE ty_weight
+                iv_express       TYPE abap_bool DEFAULT abap_false
+      RETURNING VALUE(rs_result) TYPE ty_result
+      RAISING   {{p}}cx_freight_error.
+
+  PRIVATE SECTION.
+    CONSTANTS c_express_factor TYPE p LENGTH 5 DECIMALS 2 VALUE '1.50'.
+    CONSTANTS c_minimum_charge TYPE ty_cost VALUE '6.00'.
+
+    METHODS find_zone
+      IMPORTING iv_zone_code   TYPE c LENGTH 4
+      RETURNING VALUE(rs_zone) TYPE {{p}}zone_master=>ty_zone
+      RAISING   {{p}}cx_freight_error.
+ENDCLASS.
+
+
+CLASS {{p}}freight_calc IMPLEMENTATION.
+  METHOD calculate.
+    DATA lv_zone_code TYPE c LENGTH 4.
+    lv_zone_code = to_upper( iv_zone_code ).
+
+    IF iv_weight_kg <= 0.
+      DATA(lo_invalid) = NEW {{p}}cx_invalid_weight( ).
+      lo_invalid->mv_zone_code = lv_zone_code.
+      lo_invalid->mv_weight_kg = iv_weight_kg.
+      RAISE EXCEPTION lo_invalid.
+    ENDIF.
+
+    DATA(ls_zone) = find_zone( lv_zone_code ).
+
+    IF iv_weight_kg > ls_zone-max_weight_kg.
+      DATA(lo_limit) = NEW {{p}}cx_weight_limit( ).
+      lo_limit->mv_zone_code = lv_zone_code.
+      lo_limit->mv_weight_kg = iv_weight_kg.
+      lo_limit->mv_max_weight_kg = ls_zone-max_weight_kg.
+      RAISE EXCEPTION lo_limit.
+    ENDIF.
+
+    DATA lv_cost TYPE p LENGTH 15 DECIMALS 5.
+    lv_cost = ls_zone-base_fee + iv_weight_kg * ls_zone-price_per_kg.
+    IF iv_express = abap_true.
+      lv_cost = lv_cost * c_express_factor.
+    ENDIF.
+    lv_cost = round( val = lv_cost dec = 2 ).
+    IF lv_cost < c_minimum_charge.
+      lv_cost = c_minimum_charge.
+    ENDIF.
+
+    rs_result-cost = lv_cost.
+    rs_result-currency = ls_zone-currency.
+  ENDMETHOD.
+
+  METHOD find_zone.
+    DATA(lt_zone) = {{p}}zone_master=>get_all( ).
+    READ TABLE lt_zone INTO rs_zone WITH KEY zone_code = iv_zone_code.
+    IF sy-subrc <> 0.
+      DATA(lo_unknown) = NEW {{p}}cx_unknown_zone( ).
+      lo_unknown->mv_zone_code = iv_zone_code.
+      RAISE EXCEPTION lo_unknown.
+    ENDIF.
+  ENDMETHOD.
+ENDCLASS.