# T04: Date Range Boundary Fix · Public Acceptance Basis v1.0

- Task ID: `T04`
- Frozen baseline: `ed2390f2df8252f062abd9123e20f6fffca7e5ed`
- Prompt SHA-256: `76266e7c3455ebd8cce1ed8d0d4a2c222824bb0bc454d21b6302bdd604c1d84d`

> These acceptance points were published separately after the batch finished, to support score review; they are not part of the agent-executable sample package.

## Acceptance points

- Start and end dates are both inclusive; covers the days around the boundaries, omitted boundaries, month/year crossings, and invalid dates.
- `2025-02-30` and non-ISO values raise `ValueError`; the date condition survives and composes with other filters.
- `filter_by_date` signature and CLI non-zero error status preserved.