• Add a new is_primary column to the tally_snapshots database table using liquibase.
• Set the default value of is_primary to false.
• Include a rollback script to remove the column if needed.
• Update the corresponding Java entity to map the new column.
• Ensure JPA entity changes prevent compile-time and runtime exceptions.
• Make sure the models used by other components are updated.

Example:

   <changeSet id="" author="">
    <addColumn tableName="tally_snapshots">
      <column name="is_primary" type="boolean" defaultValueBoolean="false">
        <constraints nullable="false"/>
      </column>
    </addColumn>
    <rollback>
      <dropColumn tableName="tally_snapshots" columnName="is_primary"/>
    </rollback>
  </changeSet>

Acceptance Criteria

• is_primary column exists in tally_snapshots with default value false.
• Database migration includes a valid rollback for the column addition.
• Java/JPA entity is updated to include is_primary mapping.
• Application builds successfully with no compile-time errors.
• No runtime exceptions related to the new column during read/write operations in all related components.