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/G0102/spec.md

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+# 1. Goal
+Calculate the price of a hotel stay. A booking program calls the calculation
+before it shows the price to the guest. The program needs one reason code for
+each invalid input.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- The interface {{P}}IF_HOTEL_RATE exists in package $TMP. It is active.
+- The interface has these types:
+  - TY_CATEGORY: character, length 1.
+  - TY_REASON: character, length 10.
+  - TY_AMOUNT: packed number, length 10, 2 decimals.
+  - TY_RESULT: structure with the components REASON (TY_REASON) and
+    PRICE (TY_AMOUNT).
+- The interface has these constants:
+  - C_REASON: OK, NIGHTS, GUESTS, CATEGORY.
+  - C_CATEGORY: BASIC 'S', COMFORT 'C', SUITE 'U'.
+- The interface has one method:
+  CALCULATE
+    IMPORTING iv_category TYPE ty_category
+              iv_nights TYPE i
+              iv_guests TYPE i
+              iv_breakfast TYPE abap_bool
+    RETURNING VALUE(rs_result) TYPE ty_result.
+
+# 4. Contract
+- Create the class {{P}}HOTEL_RATE in package $TMP.
+- The class is public, final, and has a public constructor without parameters.
+- The class implements {{P}}IF_HOTEL_RATE.
+- Do not add other public methods.
+
+# 5. Business rules
+Check the input in this sequence. Return the reason of the first check that
+fails and the price 0.
+1. If IV_NIGHTS is less than 1, return NIGHTS.
+2. If IV_GUESTS is less than 1, return GUESTS.
+3. If IV_CATEGORY is not BASIC, COMFORT or SUITE, return CATEGORY.
+4. Else return OK and calculate the price.
+
+Calculate the price in this sequence:
+1. One room takes at most 2 guests. The number of rooms is the number of guests
+divided by 2, rounded up.
+2. The price of one room for one night is 90.00 for BASIC, 140.00 for COMFORT
+and 260.00 for SUITE.
+3. The room total is the number of rooms multiplied by the number of nights
+multiplied by the price of one room for one night.
+4. Long stay discount on the room total:
+   - 28 nights or more: 20 %
+   - 14 nights or more: 15 %
+   - 7 nights or more: 10 %
+   - less than 7 nights: no discount
+   The discounted room total is the room total minus the discount.
+5. Breakfast costs 12.50 for one guest for one night. Add it if IV_BREAKFAST is
+true.
+6. City tax costs 3.00 for one guest for one night. Add it always.
+7. The price is the discounted room total plus breakfast plus city tax.
+
+All amounts are exact to two decimals.
+
+# 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 {{P}}IF_HOTEL_RATE.
+
+# 7. Acceptance
+- The class is active and has no syntax error.
+- The hidden tests pass.
+- Write your own ABAP Unit tests for the class.