Step F first pass: 81/92 accepted; budget floor 60 calls; rejected slots moved for regeneration

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014aUaQeLnwbb1zTpN7kHeat

tasks_gen/eval/G0189/spec.md

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+# 1. Goal
+A customs broker calculates the import duty for a shipment. The broker program
+calls one function module for each shipment. The function module
+{{P}}CUSTOMS_DUTY_OLD calculates the duty rate and the duty. Users report
+several defects. Fix the function module in place. All other behavior stays the
+same.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- Function group {{P}}FG_CUST exists in package $TMP.
+- Function module {{P}}CUSTOMS_DUTY_OLD exists in this group. It is the only
+  function module in the group. Read its source. It defines the duty rates of
+  the goods categories and all the other behavior that must stay the same.
+- The broker program calls the function module with a customs value, a country
+  of origin and a goods category. The program reads the duty rate and the duty.
+
+# 4. Contract
+- Fix the function module {{P}}CUSTOMS_DUTY_OLD in function group {{P}}FG_CUST.
+- Do not change the interface. The parameters are:
+  - IV_VALUE, importing, decfloat34: the customs value in euro.
+  - IV_COUNTRY, importing, string: the country of origin.
+  - IV_CATEGORY, importing, string: the goods category.
+  - EV_RATE, exporting, decfloat34: the duty rate in percent.
+  - EV_DUTY, exporting, decfloat34: the duty in euro.
+  - The exception INVALID_VALUE stays.
+
+# 5. Business rules
+1. The duty is rounded half up to 2 decimals. Users report duties with more
+   than 2 decimals, for example 6.185 instead of 6.19.
+2. The minimum duty is 5.00. The minimum applies only to a shipment that has a
+   duty. A shipment with a duty of zero keeps a duty of zero. Users report that
+   duty-free shipments are charged 5.00.
+3. A shipment with a preferential origin is duty-free: the duty is 0 and the
+   rate is 0. The preferential origins are Switzerland (CH), Germany (DE),
+   France (FR), Italy (IT) and Spain (ES). Users report that shipments from
+   France, Italy and Spain are charged duty.
+4. A negative customs value is not valid. Users report that a negative value is
+   accepted and gives a duty. The function module must raise the exception
+   INVALID_VALUE for a negative customs value.
+5. The duty rates of the goods categories and all other behavior stay the same
+   as they are in {{P}}CUSTOMS_DUTY_OLD today.
+
+# 6. Constraints
+- Release target: 8.16 (SAP_BASIS 816, ABAP Platform 2025).
+- Package $TMP. Do not use transports.
+- Out of scope: do not change other objects.
+- Clean ABAP. Keep the methods below 40 statements.
+
+# 7. Acceptance
+- The function module {{P}}CUSTOMS_DUTY_OLD is active and has no syntax error.
+- The hidden tests pass.
+- Write ABAP Unit tests for the function module in a global test class.