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/G1002/spec.md

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+# 1. Goal
+The optician shop uses the class {{P}}GLASSES_PRICER to calculate the price of a
+glasses order. A sales program calls the class for each quotation. The class is
+legacy code. It is hard to read and hard to test. Refactor the class. The
+behavior must stay the same.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- The class {{P}}GLASSES_PRICER exists in package $TMP. It is active.
+- The class is public and final. It has a public constructor without parameters.
+- The public interface of the class is:
+  - the type TY_AMOUNT (packed number, length 9, 2 decimals),
+  - the type TY_LENS (character, length 1),
+  - the type TY_COAT (character, length 1),
+  - the method PRICE with the importing parameters IV_FRAME (TY_AMOUNT),
+    IV_LENS (TY_LENS), IV_COAT (TY_COAT), IV_QTY (TYPE i) and the returning
+    parameter RV_PRICE (TY_AMOUNT).
+- The program {{P}}OPTIC_QUOTE_RPT calls the class.
+- The legacy implementation is the specification of the behavior.
+
+# 4. Contract
+- Refactor the class {{P}}GLASSES_PRICER in package $TMP. The name stays the same.
+- The class stays public and final and keeps its public constructor without
+  parameters.
+- Keep the public types TY_AMOUNT, TY_LENS and TY_COAT.
+- Keep the method PRICE with the same parameter names, the same parameter types
+  and the same sequence.
+- Do not add public methods or public attributes.
+- Do not create other objects.
+
+# 5. Business rules
+- The behavior of the class must not change. For every input, PRICE must return
+  the same value as the legacy method.
+- The legacy code holds all rules, including its limits and its default values.
+- Do not add a rule. Do not remove a rule. Do not correct a rule.
+- PRICE returns a price in the currency of the order.
+
+# 6. Constraints
+- Release target: ABAP Platform 2025 (SAP_BASIS 816).
+- Coding standards: Clean ABAP. One method does one thing. Method length below
+  40 statements. No deep nesting. No magic numbers: use constants. No duplicated
+  code. No dead code. No global variables. No comment that restates the code.
+- Out of scope: do not change the program {{P}}OPTIC_QUOTE_RPT. Do not change
+  the public interface of the class.
+
+# 7. Acceptance
+- The class is active and has no syntax error.
+- The hidden tests pass.
+- Write your own ABAP Unit tests for the class.