Fix coverage with several contract classes; table annotation and file path checks; clean task dir on write

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014aUaQeLnwbb1zTpN7kHeat

tasks_gen/eval/G0188/spec.md

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+# 1. Goal
+Fix the class {{P}}LAUNDRY_PRICER. A laundry service uses the class to calculate the price of a laundry order. Users report three defects:
+- A member pays the wrong price for a small order.
+- A member gets a discount on the express surcharge.
+- Ironing is much too expensive.
+The class must calculate the correct price for every order.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- The class {{P}}LAUNDRY_PRICER exists in package $TMP. It is active.
+- The class is public and final. It has a public method CALCULATE with the
+  importing parameters iv_weight_kg, iv_service, iv_express, iv_member and the
+  returning parameter rv_price.
+- The class has the public types ty_weight_kg, ty_amount and ty_service and the
+  public constants c_service_wash, c_service_dry and c_service_iron.
+- The class has the private methods rate_per_kg and round_currency.
+- A laundry order has a weight in kg, a service, an express flag and a member
+  flag. The services are WASH, DRY and IRON.
+
+# 4. Contract
+- Fix the class {{P}}LAUNDRY_PRICER in place.
+- Do not change the public method signature, the public types or the public
+  constants.
+- Do not add other public methods.
+
+# 5. Business rules
+Apply the rules in this sequence. All other behavior stays the same.
+1. The base price is the weight multiplied by the rate per kg. A member gets a
+   discount of 10 percent on the base price. An express order costs a fixed
+   surcharge of 5.00. The member discount does not apply to the express
+   surcharge. Add the express surcharge after the member discount.
+2. The minimum order value is 10.00. Apply the minimum after all discounts and
+   surcharges. If the price after all discounts and surcharges is below 10.00,
+   the price is 10.00.
+3. The ironing service uses its own rate. The rate for ironing is 1.50 per kg.
+
+# 6. Constraints
+- Release target: 8.16.
+- Coding standards: Clean ABAP. Method length below 40 statements. No global
+  variables. No comment that restates the code.
+- Out of scope: do not change the public method signature, the public types or
+  the public constants.
+
+# 7. Acceptance
+- The class is active and has no syntax error.
+- The hidden tests pass.
+- Write your own ABAP Unit tests for the class.