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Fixed a single-character spec adherence bug: SAP10.2 Table 3c (p.162)
specifies the M+L profile's DVF lower bound as `V_d,m < 100.2`, not
`< 100.0`. The 0.2 L/day window matters when V_d,m sits between 100.0
and 100.2 — exactly where 000477's May lodgement lands (100.16 L/day).
For V_d,m = 100.16:
Spec: DVF = 0 → (61) = E × r1 × fu = 134.84 × 0.015 × 1.0 = 2.0225 ✓
Buggy: DVF = 100.2 - 100.16 = 0.04 → (61) = 2.0233 (off by 0.0008)
The cascade through the missing 0.0008 W on May LINE_61 propagated to
LINE_62/64/65 and then §5 LINE_72/73 + §6 LINE_84 — clearing one
constant unblocks the entire 000477 §4-§6 cluster.
Per-fixture cluster status (was/now):
§3 24/24 → 24/24
§4 46/54 → 53/54 (only 000487 LINE_65 remains)
§5 50/54 → 52/54 (only 000487 LINE_72/73)
§6 10/12 → 11/12 (only 000487 LINE_84)
All remaining cascade failures cluster on 000487 (slice 25d — derive
LINE_64A electric-shower kWh from cert per Appendix J step 8) plus §7
LINE_92/93 marginal residuals on 4 fixtures (precision artefact).
Scoreboard:
section_cascade_pins: 286 → 293 PASS (+7)
e2e SapResult: 32 → 32 PASS (still cascade-blocked by 000487
LINE_65 + downstream §8-§12 pins not yet asserted)
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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