Legacy award follow-ups from #2031: the bursary own-right ESA proxy, and one screen for reports outside the couple #2263

Two follow-ups from the final reviews of #2031, which applies the income-related ESA and income-based JSA remunerative work conditions. Neither was in that PR's scope.

1. The 16 to 19 Bursary Fund own-right ESA signal reads raw reports

bursary_fund_16_to_19_receives_uc_or_esa_in_own_right returns true when esa_income_reported + esa_contrib_reported > 0; bursary_fund_16_to_19_vulnerable_group_eligible reads it. Its documentation calls this a reported-benefit proxy.

After #2031, a reported income-related ESA award can be screened to nil, by the capital test or by the claimant's own remunerative work. The proxy still treats that report as receipt. Synthetic example: an England student aged 17 in qualifying education, with PIP, £3,000 of reported income-related ESA and £20,000 of pay keeps the signal, while the screened status is_on_income_related_esa is false.

Possible fix: read income-related ESA receipt from is_on_income_related_esa, which is payable-to-them status (HB Regs 2006 reg 2(3A)), and contributory ESA from its own variable. Keep the explicit input.

2. One screen decides a benefit unit's whole award, including reports by members outside the couple

esa_income and jsa_income are income_related_*_award(benunit, period, <all reports>). That is the value rule #2025 and #2027 rely on, so they apply one benefit-unit screen (esa_income_eligible, jsa_income_eligible) to every report. When the claimant or partner reports, only they are tested. A report by a member outside the couple, such as a non-dependent adult entered in the same benefit unit, is then paid or not with the claimant's claim:

• a working outside member's report counts in esa_income when the claimant passes;
• a non-working outside member's report is dropped when the claimant fails.

Their person status (is_on_income_related_esa, is_on_income_based_jsa) is tested on their own claim since #2031, so passports follow the law. Only the benefit unit's total, and so household income, is affected.

No Enhanced FRS record in 2025-2030 has anyone outside the couple reporting either award, so survey results are unaffected. The issue arises only in situations entered by hand.

A fix would pay each outside member's own award on its own screen and keep the couple's award on the couple's screen. Whatever replaces the value rule in claimant_or_partner_*_income and income_support_eligible must still recognise the formula's own result.