Hard batch G0022-G0026: 5/5 accepted; budget floor, CDS checks, mutation check

- generator: budget floor (2x oracle activations, 3x calls), static checks for CDS
  $parameters and UNION annotation
- harness/mutation.py: deterministic mutants of the reference; hidden tests must fail
- G0022 revalidated with harness fixes: oracle 100, null 0
- results in docs/faz1-tasarim.md 11f

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

tasks_gen/eval/G0025/reference/i_partner_all.ddls.asddls

@@ -0,0 +1,19 @@
+@AccessControl.authorizationCheck: #NOT_REQUIRED
+@EndUserText.label: 'All partners'
+@Metadata.ignorePropagatedAnnotations: true
+define view entity {{P}}I_PARTNER_ALL
+  as select from {{p}}part_a as a
+{
+  key a.partner_id              as partner_id,
+      a.name                    as name,
+      a.city                    as city,
+      cast('A' as abap.char(1)) as source
+}
+union all
+select from {{p}}part_b as b
+{
+  key b.partner_id              as partner_id,
+      b.name                    as name,
+      b.city                    as city,
+      cast('B' as abap.char(1)) as source
+}