Use one XML 1.0 line-ending rule in the shared XML boundary and plist source-span owner. Normalize literal CRLF and CR while retaining NEL, line separator and paragraph separator as observed characters. Keep character references, raw scalar locations and prototype-key omission intact.
Validation: 229 XML/plist source tests, 60 adjacent Ghidra/Apktool/SAZ source tests, and 33 compiled CLI/provider tests passed. Full check:ci passed. Real plutil XML and binary fixtures reproduced the baseline loss and passed CLI plus SDK-validated stdio MCP checks with unchanged input digests. Independent source review found no blocker. Binary conversion losses tracked by #5701, #5703 and #5705 remain separate work.
Closes#5702
Own syntax validation and source-located DOM projection together. Preserve explicit consumer policies and remove duplicated warning-message filters from Apktool and SAZ.
Validation: 92 focused checks, 3 selected fake Apktool boundary checks, check:fast and docs:check. No real Apktool or Ghidra execution.
Refs #4694
morluto