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feat(#22): Gate B BDFT identity and rounding (TV-3, TV-10)

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Pure units module: bdft = sqft × thickness_in (no /12), half-up
rounding for sqft/bdft/price, length to nearest 1/8". Property
checks for monotonicity in thickness and sqft.

TDD: red evidence in test-results/tv3-tv10-red.txt, then minimum impl.

Results:
TV-3 | pass | test-results/tv3-tv10-green.txt
TV-10 | pass | test-results/tv3-tv10-green.txt
This commit is contained in:
grokbot_ty
2026-09-07 06:02:08 +00:00
parent 3c2f8871a8
commit 55d66b9644
6 changed files with 181 additions and 0 deletions
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test-results/tv3-tv10-green.txt
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RUN v2.1.9 /workspace/gitea-atd/Ty_Tech/SlabUploader/frontend
stdout | src/__tests__/tv3-tv10-units.test.ts > TV-3 Scale, sqft, bdft > bdft = sqft × thickness_in with no divide-by-12
{"case":"TV-3","lengthIn":96,"thicknessIn":1.5,"sqft":0.64,"bdft":0.96,"expectedBdft":0.96,"identity_1sqft_1in":1}
stdout | src/__tests__/tv3-tv10-units.test.ts > TV-10 Rounding > half-up / nearest-step matches TECH-SPEC vectors
{"case":"TV-10","length":{"raw":96.04,"rounded":96,"expected":96},"sqft":{"raw":0.641,"rounded":0.64,"expected":0.64},"bdft":{"raw":11.525,"rounded":11.53,"expected":11.53},"price":{"raw":12.345,"rounded":12.35,"expected":12.35}}
✓ src/__tests__/tv3-tv10-units.test.ts (3 tests) 7ms
Test Files 1 passed (1)
Tests 3 passed (3)
Start at 06:02:02
Duration 377ms (transform 61ms, setup 0ms, collect 63ms, tests 7ms, environment 0ms, prepare 67ms)