Stage 2 summary at 50 accepted trajectories

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tasks_gen/train/G1081/spec.md

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+# 1. Goal
+A fitness chain runs several studios. Each studio sends the attendance list of
+its classes for one day. The head office needs one summary row for each class
+type. The summary shows how many classes took place, how many members attended,
+and the total fee.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- All objects are in package $TMP.
+- The class {{P}}STUDIO_SUMMARY does not exist yet.
+- Each studio sends its own list. The caller appends the lists of all studios
+  into one table and calls the class once.
+
+# 4. Contract
+- Create the class {{P}}STUDIO_SUMMARY in package $TMP.
+- The class is public, final, and has a public constructor without parameters.
+- The class defines these public types:
+  - ty_attendance: studio (CHAR 4), class_id (CHAR 8), class_type (CHAR 10),
+    member_id (CHAR 8), fee (PACKED, length 8, 2 decimals).
+  - tt_attendance: a table of ty_attendance.
+  - ty_summary: class_type (CHAR 10), class_count (INT4), member_count (INT4),
+    total_fee (PACKED, length 8, 2 decimals).
+  - tt_summary: a table of ty_summary.
+- The class has this public method:
+  summarize
+    IMPORTING it_attendance TYPE tt_attendance
+    RETURNING VALUE(rt_summary) TYPE tt_summary.
+- Do not add other public methods.
+
+# 5. Business rules
+1. Use only entries with a class_type that is not empty and a fee greater than
+   zero. Ignore all other entries.
+2. If two of the remaining entries have the same studio, class_id and member_id,
+   keep only the first of these entries in the input order and ignore the later
+   entries.
+3. Group the remaining entries by class_type.
+4. class_count is the number of different combinations of studio and class_id
+   in the group.
+5. member_count is the number of different member_id values in the group.
+6. total_fee is the sum of the fee of all entries in the group.
+7. Return one row for each class_type that has at least one entry. Sort the rows
+   by class_type in ascending order.
+
+# 6. Constraints
+- Release target: ABAP Platform 2025 (SAP_BASIS 816).
+- Coding standards: Clean ABAP. Method length below 40 statements. No global
+  variables. No comment that restates the code.
+- Out of scope: no database access, no ALV list, no report, no function module.
+
+# 7. Acceptance
+- The class is active and has no syntax error.
+- The hidden tests pass.
+- Write your own ABAP Unit tests for the class.