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/G1023/spec.md

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+# 1. Goal
+A ride-sharing service splits the cost of a shared ride between the passengers.
+The booking program calls the calculation after each completed ride. The program
+needs the total cost of the ride and the share of each passenger.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- A ride has one driver and one or more passengers. The driver is not a
+  passenger and pays nothing.
+- The service charges a base fee, a distance fee and a detour fee.
+- The booking program knows the distance of the ride in whole kilometres and
+  the number of passengers of the ride.
+
+# 4. Contract
+- Create the class {{P}}RIDESHARE_SPLIT in package $TMP.
+- The class is public and final. It has a public constructor without parameters.
+- The class has these public types:
+  - TY_DISTANCE: a whole number of kilometres.
+  - TY_AMOUNT: a packed number with 2 decimals. The currency is euro.
+- The class has these public methods. Do not add other public methods.
+  - CALCULATE_TOTAL
+    IMPORTING iv_distance_km TYPE ty_distance
+              iv_passengers  TYPE i
+    RETURNING VALUE(rv_total) TYPE ty_amount
+  - CALCULATE_SHARE
+    IMPORTING iv_distance_km TYPE ty_distance
+              iv_passengers  TYPE i
+    RETURNING VALUE(rv_share) TYPE ty_amount
+
+# 5. Business rules
+Apply the rules in this sequence.
+1. The number of passengers is the number of persons who share the ride.
+2. If the number of passengers is less than 1, the total cost is 0.00 and the
+   share is 0.00. Rules 3 to 7 do not apply.
+3. A distance below 0 counts as 0 kilometres.
+4. The total cost of the ride is the sum of:
+   - a base fee of 3.00,
+   - a distance fee of 0.40 for each kilometre,
+   - a detour fee of 1.20 for each passenger after the first passenger.
+5. The share of a passenger is the total cost divided by the number of
+   passengers.
+6. Round the share to 2 decimals. Round a half away from zero (for example,
+   2.345 becomes 2.35).
+7. The minimum share is 1.50. If the rounded share is below 1.50, the share is
+   1.50. The minimum share does not change the total cost.
+
+# 6. Constraints
+- Release target: 8.16 (SAP_BASIS 816).
+- Coding standards: Clean ABAP. Methods below 40 statements. No global
+  variables. No comment that restates the code.
+- Out of scope: no database table, no CDS view, no report, no function module,
+  no interface.
+
+# 7. Acceptance
+- The class is active and has no syntax error.
+- The hidden tests pass.
+- Write your own ABAP Unit tests for the class.