9.2.2 / 2026-02-23

• fix(document): make pathsToSave filter all update operators and preserve unsaved state #16027
• fix(setDefaultsOnInsert): check child filter paths before applying defaults, fix dot-notation handling, and prevent prototype pollution #16031 #16030
• fix(populate): make refPath work as a function, including map paths with $* #16035 #16028
• perf: optimize pathsToSave and indexed-path checks for subdocuments
• types: remove duplicate definition of UUIDToJSON type #16029
• docs(field-level-encryption): clarify crypt_shared library usage and move extraOptions under autoEncryption #16026 #16015
• test(types): introduce TSTyche for type testing #16024