Observe.Value

AOS VALUES (docs/standards/AOS-1.0-draft-1.md §6, §24.2): the typed value a schema-governed payload slot holds, as AOS-JSON/1 writes it -- every integer a canonical decimal STRING (no JSON number, so no counter or tick ever passes through a float: AOS-VAL-002), a float as its exact bit pattern in lowercase hex, bytes as lowercase hex -- and the availability states a slot can be in instead of holding a value (AOS-VAL-003: zero is never "not measured"). This module is the semantic authority for what a valid tagged value is. The bootstrap tool's reader (tool/Aos.hs, `checkValue`) implements the same rules; scripts/ci/observability.sh holds the two to the same verdict on every fixture. Decoding is strict: a tagged value has EXACTLY the members its tag names -- an extra member is an error, not ignored. --------------------------------------------------------------------------- Bytes: digits, hex, identities

30constructor AosMemberAbsent