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/G0109/spec.md

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+# 1. Goal
+A personnel system stores employees. Each employee can have a manager, who is
+also an employee. A report reads the manager data of the employees. The data
+must be in the database, in CDS views. The report uses an association in an
+ABAP SQL path expression.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- Table {{P}}EMP (employee), package $TMP. Key: EMP_ID (CHAR 10).
+  Fields: MANAGER_ID (CHAR 10, the EMP_ID of the manager), EMP_NAME (CHAR 40),
+  DEPARTMENT (CHAR 10), IS_MANAGER (CHAR 1, 'X' for a manager).
+- The table is filled by the seed class {{P}}SEED_DATA.
+
+# 4. Contract
+- Create the CDS view entity {{P}}I_MANAGER in package $TMP.
+  Scalar elements: MGR_ID (key), MGR_NAME, MGR_DEPT.
+- Create the CDS view entity {{P}}I_EMPLOYEE in package $TMP.
+  Scalar elements: EMP_ID (key), MANAGER_ID, EMP_NAME, DEPARTMENT.
+- {{P}}I_EMPLOYEE also has the exposed association _MANAGER. _MANAGER is an
+  element of the view. It is not a scalar element.
+- Both views have no authorization check (#NOT_REQUIRED).
+
+# 5. Business rules
+1. {{P}}I_MANAGER shows one row for each row of {{P}}EMP with IS_MANAGER = 'X'.
+   MGR_ID, MGR_NAME and MGR_DEPT have the values of EMP_ID, EMP_NAME and
+   DEPARTMENT of that employee.
+2. {{P}}I_EMPLOYEE shows one row for each row of {{P}}EMP. EMP_ID, MANAGER_ID,
+   EMP_NAME and DEPARTMENT have the values of the employee.
+3. The association _MANAGER leads from an employee to the manager of the
+   employee. The manager is the row of {{P}}I_MANAGER whose MGR_ID is the
+   MANAGER_ID of the employee. An employee whose MANAGER_ID is empty or has no
+   such row has no manager.
+4. _MANAGER is part of the public interface of {{P}}I_EMPLOYEE. An ABAP SQL
+   statement reads the manager data with the path expression
+   {{P}}I_EMPLOYEE\_MANAGER. Example:
+     SELECT FROM {{P}}I_EMPLOYEE\_MANAGER FIELDS mgr_name
+       INTO TABLE @DATA(lt_name).
+   The elements of the path expression are the elements of the manager, not
+   the elements of the employee.
+
+# 6. Constraints
+- Release target: 8.16.
+- Out of scope: do not change {{P}}EMP.
+- Use ABAP SQL and CDS only.
+
+# 7. Acceptance
+- Both views are active and have no syntax error.
+- The hidden tests pass.
+- Write ABAP Unit tests with CL_CDS_TEST_ENVIRONMENT in a global test class.