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/G0018/reference/t20_test.clas.abap

@@ -0,0 +1,48 @@
+CLASS {{p}}t20_test DEFINITION PUBLIC FINAL CREATE PUBLIC
+  FOR TESTING DURATION SHORT RISK LEVEL HARMLESS.
+  PRIVATE SECTION.
+    CLASS-DATA go_env TYPE REF TO if_cds_test_environment.
+    CLASS-METHODS class_setup.
+    CLASS-METHODS class_teardown.
+    METHODS setup.
+    METHODS order_with_customer FOR TESTING.
+    METHODS order_without_customer FOR TESTING.
+ENDCLASS.
+
+
+CLASS {{p}}t20_test IMPLEMENTATION.
+  METHOD class_setup.
+    go_env = cl_cds_test_environment=>create( i_for_entity = '{{P}}I_ORDER' ).
+  ENDMETHOD.
+
+  METHOD class_teardown.
+    go_env->destroy( ).
+  ENDMETHOD.
+
+  METHOD setup.
+    DATA lt_cust TYPE STANDARD TABLE OF {{p}}cust WITH EMPTY KEY.
+    DATA lt_ord  TYPE STANDARD TABLE OF {{p}}ord WITH EMPTY KEY.
+    go_env->clear_doubles( ).
+    lt_cust = VALUE #(
+      ( cust_id = 'C001' cust_name = 'Alpha' country = 'DE' ) ).
+    lt_ord = VALUE #(
+      ( order_id = 'O1' cust_id = 'C001' order_date = '20250101' status = 'O' )
+      ( order_id = 'O2' cust_id = 'C999' order_date = '20250102' status = 'O' )
+      ( order_id = 'O3' cust_id = 'C001' order_date = '20250103' status = 'C' ) ).
+    go_env->insert_test_data( lt_cust ).
+    go_env->insert_test_data( lt_ord ).
+  ENDMETHOD.
+
+  METHOD order_with_customer.
+    SELECT SINGLE customer_name, country FROM {{p}}i_order
+      WHERE order_id = 'O1' INTO @DATA(ls_ord).
+    cl_abap_unit_assert=>assert_equals( exp = 'Alpha' act = ls_ord-customer_name ).
+    cl_abap_unit_assert=>assert_equals( exp = 'DE' act = ls_ord-country ).
+  ENDMETHOD.
+
+  METHOD order_without_customer.
+    SELECT SINGLE customer_name FROM {{p}}i_order
+      WHERE order_id = 'O2' INTO @DATA(lv_name).
+    cl_abap_unit_assert=>assert_initial( act = lv_name ).
+  ENDMETHOD.
+ENDCLASS.