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/G1043/seed/if_med_copay.intf.abap

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+INTERFACE {{p}}if_med_copay PUBLIC.
+  TYPES ty_tier TYPE c LENGTH 1.
+  TYPES ty_reason TYPE c LENGTH 10.
+  TYPES ty_amount TYPE p LENGTH 9 DECIMALS 2.
+
+  CONSTANTS:
+    BEGIN OF c_tier,
+      standard TYPE ty_tier VALUE 'S',
+      chronic  TYPE ty_tier VALUE 'C',
+      exempt   TYPE ty_tier VALUE 'E',
+    END OF c_tier.
+
+  CONSTANTS:
+    BEGIN OF c_reason,
+      ok       TYPE ty_reason VALUE 'OK',
+      price    TYPE ty_reason VALUE 'PRICE',
+      quantity TYPE ty_reason VALUE 'QUANTITY',
+      tier     TYPE ty_reason VALUE 'TIER',
+    END OF c_reason.
+
+  TYPES:
+    BEGIN OF ty_result,
+      copay  TYPE ty_amount,
+      reason TYPE ty_reason,
+    END OF ty_result.
+
+  METHODS calculate
+    IMPORTING iv_price         TYPE ty_amount
+              iv_quantity      TYPE i
+              iv_tier          TYPE ty_tier
+    RETURNING VALUE(rs_result) TYPE ty_result.
+ENDINTERFACE.