Make XML numeric uncertainty explicit at its producing boundary, separate
from decoded IEEE NaN and signed infinities. Shared projection preserves
known values using canonical numeric labels; unresolved XML numeric
values remain explicit unknowns. Remove the superseded known-value
wrapper and spelling alias, keeping numeric interpretation with its owner.
Cover public CLI/MCP binary archives, lookalike dictionaries, authored
32/64-bit IEEE payloads, signed zero, and XML parsing/overflow uncertainty.
Document canonical labels and unrepresented NaN payload/sign details.
Fixes#4919. Related: #4906, #4852.
Validation: baseline 2 failures/5 controls through public CLI/MCP; stable
final 439 passed across25files, check:fast, docs:check and discovery.
Native macOS plutil and existing codesign controls executed; no
Linux/Windows run or real Interface Builder engine qualification.
morluto
f2b7bbb312