Snapshot: new training tasks (balanced generation), docs

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

tasks_gen/train/G1927/seed/i_job_cost.ddls.asddls

@@ -0,0 +1,24 @@
+@AccessControl.authorizationCheck: #NOT_REQUIRED
+@EndUserText.label: 'Service job cost'
+define view entity {{P}}I_JOB_COST
+  as select from {{p}}job as h
+    inner join   {{p}}jobl as l on l.job_id = h.job_id
+{
+  key h.job_id                                                as job_id,
+      h.customer                                              as customer_name,
+      h.calc_mode                                             as calc_mode_cd,
+      h.group_code                                            as group_code,
+      h.job_date                                              as job_date,
+      sum( l.work_hours )                                     as hours_sum,
+      count( * )                                              as line_count,
+      sum( case when h.calc_mode = 'F'
+                then cast( l.rate as abap.dec( 21, 4 ) )
+                else cast( l.work_hours * l.rate as abap.dec( 21, 4 ) )
+           end )                                              as value_sum
+}
+group by
+  h.job_id,
+  h.customer,
+  h.calc_mode,
+  h.group_code,
+  h.job_date