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/G1022/spec.md

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+# 1. Goal
+A chimney sweep company calculates the fee of a sweep visit. A dispatcher
+program calls the class {{P}}SWEEP_PRICER before it confirms an appointment.
+The class works, but the code is hard to read and hard to change. Refactor the
+class. The behavior stays the same.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- The class {{P}}SWEEP_PRICER exists in package $TMP. It is active.
+- The class is public and final. It has one public method, CALCULATE.
+- The method CALCULATE has the importing parameters iv_flues (TYPE i),
+  iv_building (TYPE ty_building), iv_soot (TYPE i) and iv_express
+  (TYPE abap_bool). It has the returning parameter rv_fee (TYPE ty_fee).
+- ty_building and ty_fee are public types of the class. ty_building is CHAR 1.
+  ty_fee is a packed number with 8 characters and 2 decimal places.
+- The legacy code contains the complete business logic. Read the legacy code.
+
+# 4. Contract
+- Refactor the class {{P}}SWEEP_PRICER in package $TMP.
+- The class stays public and final.
+- The public method CALCULATE keeps its name, its parameters and the types of
+  the parameters.
+- Do not add other public methods or public attributes.
+
+# 5. Business rules
+- The legacy code contains all the business rules.
+- The behavior of the method CALCULATE stays the same for every input.
+- Do not change any result of the method CALCULATE.
+
+# 6. Constraints
+- Release target: SAP_BASIS 816 (ABAP Platform 2025).
+- Coding standards: Clean ABAP. A method has less than 40 statements. No deep
+  nesting. No magic numbers, use constants. Use meaningful names. No comment
+  that restates the code. No global variables.
+- Out of scope: do not change the public interface of the class.
+
+# 7. Acceptance
+- The class is active and has no syntax error.
+- The hidden tests pass. They check the unchanged behavior.
+- Write your own ABAP Unit tests for the class.