Pipeline controller: plan 2 (hard +, error +50 %), backlog throttle, 2 trajectory workers, stop rules, summaries every 50; budget reserve

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

tasks_gen/train/G1024/reference/cx_unknown_dest.clas.abap

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+CLASS {{p}}cx_unknown_dest DEFINITION
+  PUBLIC
+  FINAL
+  INHERITING FROM {{p}}cx_holiday_error
+  CREATE PUBLIC.
+
+  PUBLIC SECTION.
+    DATA mv_dest TYPE string READ-ONLY.
+
+    METHODS constructor
+      IMPORTING iv_dest TYPE string.
+
+  PRIVATE SECTION.
+ENDCLASS.
+
+
+CLASS {{p}}cx_unknown_dest IMPLEMENTATION.
+  METHOD constructor.
+    super->constructor( iv_message = 'Destination is not offered' ).
+    mv_dest = iv_dest.
+  ENDMETHOD.
+ENDCLASS.