proof(SafeTOML): DISCHARGE isScalarCorrect via 10-arm case-split (proven#90, #107) - #113
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7 scalar arms (TString, TInt, TFloat, TBool, TDateTime, TDate, TTime) close by Refl — goal `not (isTable val || isArray val) = True` reduces to `not (False || False) = True`. 3 container arms (TArray, TInlineTable, TTable) — premise `isScalar val = True` reduces to `False = True`, uninhabited (`Refl impossible`). Mirror of the SafeYAML #112 discharge. The OWED comment correctly identified the 10-arm case-split shape — just hadn't been executed. Refs #90 #107 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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🔍 Hypatia Security ScanFindings: 332 issues detected
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Mirror of #112 SafeYAML — same case-split shape for TOMLValue's 10 constructors.
```idris
public export
isScalarCorrect : (val : TOMLValue) -> isScalar val = True -> not (isTable val || isArray val) = True
isScalarCorrect (TString _) _ = Refl
isScalarCorrect (TInt _) _ = Refl
isScalarCorrect (TFloat _) _ = Refl
isScalarCorrect (TBool _) _ = Refl
isScalarCorrect (TDateTime _) _ = Refl
isScalarCorrect (TDate _) _ = Refl
isScalarCorrect (TTime _) _ = Refl
isScalarCorrect (TArray _) Refl impossible
isScalarCorrect (TInlineTable _) Refl impossible
isScalarCorrect (TTable _) Refl impossible
```
7 scalar arms close by Refl (
not (False || False) = True).3 container arms have premise
False = True(uninhabited).Refs #90 #107