Method _validate_migration_results

data/database.py:1885–1924

Validate migration didn't create inconsistencies Checks that: 1. Program island metadata matches actual island assignment 2. No programs are assigned to multiple islands 3. All island best programs exist and are in correct islands

(self)

        self._validate_migration_results()

    def _validate_migration_results(self) -> None:
        """
        Validate migration didn't create inconsistencies

        Checks that:
        1. Program island metadata matches actual island assignment
        2. No programs are assigned to multiple islands
        3. All island best programs exist and are in correct islands
        """
        seen_program_ids = set()

        for i, island in enumerate(self.islands):
            for program_id in island:
                # Check for duplicate assignments
                if program_id in seen_program_ids:
                    logger.error(f"Program {program_id} assigned to multiple islands")
                    continue
                seen_program_ids.add(program_id)

                # Check program exists
                if program_id not in self.programs:
                    logger.warning(f"Island {i} contains nonexistent program {program_id}")
                    continue

                # Check metadata consistency
                program = self.programs[program_id]
                stored_island = program.metadata.get("island")
                if stored_island != i:
                    logger.warning(
                        f"Island mismatch for program {program_id}: "
                        f"in island {i} but metadata says {stored_island}"
                    )

        # Validate island best programs
        for i, best_id in enumerate(self.island_best_programs):
            if best_id is not None:
                if best_id not in self.programs:
                    logger.warning(f"Island {i} best program {best_id} does not exist")
                elif best_id not in self.islands[i]:
                    logger.warning(f"Island {i} best program {best_id} not in island")

    def _cleanup_stale_island_bests(self) -> None:
        """