Snapshot: new training tasks (balanced generation), docs

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

tasks_gen/train/G1952/spec.md

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+# 1. Goal
+The recording studio "Blue Room" rents its rooms to customers by the hour. Store
+every recording session in one database table. The booking desk, an invoicing
+program and an OData service read the same table.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- The studio has several rooms. Each room has a room code of 4 characters.
+- A customer books a session in a room. The studio numbers the sessions of a
+  room from 000001.
+- For each session the studio records the date, the booked hours, the rate mode,
+  the tariff group, the number of recorded tracks and the value of the session.
+- The table is client-dependent. The client field is the first key field.
+- The table is in package $TMP.
+
+# 4. Contract
+- Create the transparent database table {{P}}SESS in package $TMP.
+- The table has these fields, in this order: client, studio_id, session_no,
+  customer, session_date, booked_hours, rate_mode, tariff_group, track_count,
+  session_value.
+- The key fields are client, studio_id and session_no.
+- The table has no other fields.
+
+# 5. Business rules
+1. The fields have the names, the types and the lengths of this table:
+
+| Field | Type | Length | Decimals | Key |
+| --- | --- | --- | --- | --- |
+| client | abap.clnt | 3 | 0 | yes |
+| studio_id | abap.char | 4 | 0 | yes |
+| session_no | abap.numc | 6 | 0 | yes |
+| customer | abap.char | 10 | 0 | no |
+| session_date | abap.dats | 8 | 0 | no |
+| booked_hours | abap.dec | 5 | 2 | no |
+| rate_mode | abap.char | 4 | 0 | no |
+| tariff_group | abap.char | 4 | 0 | no |
+| track_count | abap.int4 | 10 | 0 | no |
+| session_value | abap.dec | 15 | 2 | no |
+
+2. The combination of client, studio_id and session_no is the key of the table.
+   This combination occurs at most once in the table.
+3. booked_hours is the number of booked hours with 2 decimal places.
+4. session_value is the value of one session with 2 decimal places.
+5. The field names are not ABAP SQL reserved words. Words such as HOURS, MODE,
+   ORDER, DATE, COUNT, GROUP and VALUE are not permitted as field names. Use the
+   names of the contract.
+
+# 6. Constraints
+- Release target: SAP_BASIS 816 (ABAP Platform 2025).
+- Package $TMP. Do not use transports.
+- Use Clean ABAP.
+- Out of scope: do not create or change other objects.
+
+# 7. Acceptance
+- The table is active and has no syntax error.
+- The hidden tests pass.
+- Write ABAP Unit tests in a global test class. Use CL_OSQL_TEST_ENVIRONMENT.