Use one typed CDP resource-size owner in web and Electron capture. Supplied invalid sizes retain null plus completeness diagnostics; omitted sizes remain unknown without inventing malformed metadata. Preserve other resource facts and valid zero/positive values.
Validation: public CLI regression failed against baseline clamping; 36 focused controls passed after the fix, check:fast and docs:check passed. Fake CDP producer with real CLI/transport and tiny local files; no real Electron/browser or heavy profiling qualification.
Refs #4708
