The extractor now captures "Heating System (Other):" and the mapper resolves
it to the Table 4a code (301, community boilers) + Table 12 community fuel
(51 via the shared _resolve_community_heating_fuel_code), so
is_heat_network_main routes the DLF / standing-charge / 80%-efficiency
branch instead of pricing the dwelling as an ordinary mains-gas boiler
(fixture 507644414148: +14.3 over-rate closes by ~8.6). Harness MAE
1.726 -> 1.684; ceiling ratcheted to 1.70.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
_parse_room_in_roof captures the RdSAP §3.10 block (age range, floor area,
gables with Exposed/Party type, slopes, common walls, flat ceiling as
length x height) on main and extension roof spaces; both part builders now
carry it to sap_room_in_roof (issue #1590 bug 5 — closes the last #1590
subtask). Harness MAE 1.748 (754917 corrects to pashub's own pre-SAP; RIR
surfaces now billed per-surface instead of as insulated loft).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
"Photovoltaic array kWp Known? Yes" lodges a per-system block (kWp, pitch,
orientation, overshading) instead of the percent-roof estimate; the extractor
only read the estimate, so measured PV never reached the mapper and the
Appendix M credit was silently zero (issue #1590 bug 1). Harness MAE
2.632 -> 2.571 (fixture 507639151843's 13.5-SAP under-rate closes to +0.5);
ceiling ratcheted to 2.58.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
