Build `bug_bounty_validate(report)` returning `True` if all required fields are present and non-empty: - Required keys: `"title"`, `"steps_to_reproduce"`, `"expected"`, `"actual"`, `"severity"`. - A value is "present" if the key exists AND `bool(value)` is True (strips false-y blanks). - Severity must be one of `{"P0", "P1", "P2", "P3"}`; anything else fails validation. - Missing any required key OR invalid severity → return `False`. - All checks pass → return `True`. This is the intake gate every bug-bounty tracker runs before paying out.