The short versionTwo servicing DLLs I found no write-up of. CloudRecoveryDownloadTool.dll and UdiApiClient.dll have carried Rust since the first 24H2 build, are 96.6 and 96.2 percent Rust by the linker’s own accounting, and share seven internal crates. (Sections 3 and 4.)DirectWrite, measured rather than quoted. DWriteCore is 57.9 percent Rust by code bytes in both shipped builds. System32\DWrite.dll is zero: no Rust strings among 30,073, no rustc objects among 454. (Section 7.)Windows ships som...