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/G0020/reference/t20_test.clas.abap

@@ -0,0 +1,62 @@
+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 revenue_of_one_book FOR TESTING.
+    METHODS period_is_inclusive FOR TESTING.
+ENDCLASS.
+
+
+CLASS {{p}}t20_test IMPLEMENTATION.
+  METHOD class_setup.
+    go_env = cl_cds_test_environment=>create( i_for_entity = '{{P}}I_BOOK_REVENUE' ).
+  ENDMETHOD.
+
+  METHOD class_teardown.
+    go_env->destroy( ).
+  ENDMETHOD.
+
+  METHOD setup.
+    DATA lt_book TYPE STANDARD TABLE OF {{p}}book WITH EMPTY KEY.
+    DATA lt_sale TYPE STANDARD TABLE OF {{p}}sale WITH EMPTY KEY.
+    go_env->clear_doubles( ).
+    lt_book = VALUE #(
+      ( book_id = 'A1' title = 'Test Book' category = 'TECH' price = '10.00' ) ).
+    lt_sale = VALUE #(
+      ( book_id = 'A1' sale_date = '20240101' quantity = 2 )
+      ( book_id = 'A1' sale_date = '20240131' quantity = 3 )
+      ( book_id = 'A1' sale_date = '20240201' quantity = 9 ) ).
+    go_env->insert_test_data( lt_book ).
+    go_env->insert_test_data( lt_sale ).
+  ENDMETHOD.
+
+  METHOD revenue_of_one_book.
+    DATA lv_from TYPE d.
+    DATA lv_to TYPE d.
+    lv_from = '20240101'.
+    lv_to = '20240131'.
+    SELECT SINGLE sold_quantity, revenue
+      FROM {{p}}i_book_revenue( p_from = @lv_from, p_to = @lv_to )
+      WHERE book_id = 'A1'
+      INTO @DATA(ls_row).
+    cl_abap_unit_assert=>assert_equals( exp = 5 act = CONV i( ls_row-sold_quantity ) ).
+    cl_abap_unit_assert=>assert_equals(
+      exp = CONV decfloat34( '50.00' )
+      act = CONV decfloat34( ls_row-revenue ) ).
+  ENDMETHOD.
+
+  METHOD period_is_inclusive.
+    DATA lv_from TYPE d.
+    DATA lv_to TYPE d.
+    lv_from = '20240101'.
+    lv_to = '20240101'.
+    SELECT SINGLE sold_quantity
+      FROM {{p}}i_book_revenue( p_from = @lv_from, p_to = @lv_to )
+      WHERE book_id = 'A1'
+      INTO @DATA(lv_sold).
+    cl_abap_unit_assert=>assert_equals( exp = 2 act = CONV i( lv_sold ) ).
+  ENDMETHOD.
+ENDCLASS.