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/G0026/reference/rent_price.func.abap

@@ -0,0 +1,43 @@
+FUNCTION {{p}}rent_price
+  IMPORTING
+    iv_vehicle_class TYPE string
+    iv_minutes TYPE i
+    iv_km TYPE i
+    iv_member TYPE abap_bool
+    iv_weekend TYPE abap_bool
+  EXPORTING
+    ev_time_fee TYPE decfloat34
+    ev_distance_fee TYPE decfloat34
+    ev_surcharge TYPE decfloat34
+    ev_discount TYPE decfloat34
+    ev_total TYPE decfloat34
+  EXCEPTIONS
+    invalid_duration
+    invalid_distance
+    invalid_class.
+
+  DATA ls_request TYPE {{p}}cl_rent=>ty_request.
+  ls_request-vehicle_class = iv_vehicle_class.
+  ls_request-minutes       = iv_minutes.
+  ls_request-km            = iv_km.
+  ls_request-member        = iv_member.
+  ls_request-weekend       = iv_weekend.
+
+  DATA(ls_result) = {{p}}cl_rent=>calculate( ls_request ).
+
+  CASE ls_result-err_code.
+    WHEN {{p}}cl_rent=>c_err-duration.
+      RAISE invalid_duration.
+    WHEN {{p}}cl_rent=>c_err-distance.
+      RAISE invalid_distance.
+    WHEN {{p}}cl_rent=>c_err-bad_class.
+      RAISE invalid_class.
+    WHEN OTHERS.
+      ev_time_fee     = ls_result-time_fee.
+      ev_distance_fee = ls_result-distance_fee.
+      ev_surcharge    = ls_result-surcharge.
+      ev_discount     = ls_result-discount.
+      ev_total        = ls_result-total.
+  ENDCASE.
+
+ENDFUNCTION.