Cohort residual slice 17: wire Appendix L inputs into 000480 / 487 / 516

The three open fixtures defined `SECTION_5_BULB_COUNT_LEL` and
`SECTION_6_VERTICAL_WINDOWS` at module scope but never passed them
into `make_minimal_sap10_epc(...)`. The §5 cascade therefore fell
back to all three Appendix L fallbacks simultaneously:

  L5b   (no bulb data lodged):  C_L,fixed = 185 lm/m² × TFA
  L8c   (no fixed lighting):    ε_fixed = 21.30 lm/W
  L2b   (no windows lodged):    C_daylight = 1.433 (no-bonus default)

Per SAP 10.2 Appendix L the fallbacks fire only when the cert
genuinely lacks the data. The actual cert lodges low-energy bulbs +
wall windows on every Elmhurst fixture, so the fallback path was
wrong by construction. Effect on lighting kWh per yr (line 232):

  fixture | calc pre | calc post |  PDF
  --------|----------|-----------|--------
  000480  |   564.5  |   ~212    | 212.55
  000487  |   550.4  |   ~228    | 227.69
  000516  |   593.3  |   ~231    | 230.89

(post values inferred from the closure pattern on 000474/477/490 —
those three pass `test_elmhurst_end_to_end_lighting_kwh_per_yr_
matches_u985_worksheet` at abs=1e-4.)

Impact on SAP integer (Δ vs PDF):

  fixture | pre  | post | direction
  --------|------|------|----------
  000480  | +5   | +7   | further from PDF
  000487  | +3   | +5   | further from PDF
  000516  | +4   | +7   | further from PDF

Net SAP delta gets larger after this fix — the lighting fallback
was over-counting kWh, which compensated for an under-application
of cost elsewhere (calc total fuel cost £746 vs PDF £855 on 000480
despite calc kWh being HIGHER in every component). Less lighting
kWh → less total cost → ECF down → SAP up → away from PDF. The
remaining gap is cost-side (fuel price / standing charge / fuel
routing). Investigated in the next slice.

This fix is spec-faithful per Appendix L L1-L11 — lodge the cert
data the spec expects; don't rely on absent-data fallbacks for
data that's actually present. Closing the cost residual will let
000480/487/516 land at Δcont < 0.01.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

packages/domain/src/domain/sap/worksheet/tests/_elmhurst_worksheet_000480.py

@@ -142,6 +142,8 @@ def build_epc() -> EpcPropertyData:
         heated_rooms_count=4,
         door_count=2,  # cert lodges 2 doors total
         percent_draughtproofed=100,
+        low_energy_fixed_lighting_bulbs_count=SECTION_5_BULB_COUNT_LEL,
+        sap_windows=list(SECTION_6_VERTICAL_WINDOWS),
         sap_ventilation=SapVentilation(
             extract_fans_count=1,
             sheltered_sides=2,

packages/domain/src/domain/sap/worksheet/tests/_elmhurst_worksheet_000487.py

@@ -104,6 +104,8 @@ def build_epc() -> EpcPropertyData:
         heated_rooms_count=3,
         door_count=1,
         percent_draughtproofed=100,
+        low_energy_fixed_lighting_bulbs_count=SECTION_5_BULB_COUNT_LEL,
+        sap_windows=list(SECTION_6_VERTICAL_WINDOWS),
         sap_ventilation=SapVentilation(
             extract_fans_count=1,
             sheltered_sides=3,

packages/domain/src/domain/sap/worksheet/tests/_elmhurst_worksheet_000516.py

@@ -83,6 +83,8 @@ def build_epc() -> EpcPropertyData:
         heated_rooms_count=3,
         door_count=1,
         percent_draughtproofed=75,
+        low_energy_fixed_lighting_bulbs_count=SECTION_5_BULB_COUNT_LEL,
+        sap_windows=list(SECTION_6_VERTICAL_WINDOWS),
         sap_ventilation=SapVentilation(
             extract_fans_count=2,
             sheltered_sides=2,