Phase 0. Resolve the four Syncthing conflict files and push the laptop's
228 notes to mainframe, both sides now hashing identically.
Settle the If-Match question PLAN.md deferred to phase 1: SFTPGo's WebDAV
returns ETags but ignores the precondition, so a PUT carrying a bogus
If-Match still writes. The client takes the HEAD-compare-then-PUT fallback.
Chasing a PUT/HEAD ETag mismatch turned up a NAS whose clock was 124
seconds fast with no time daemon installed, which NFS was stamping onto
every file mtime under /docs. Installed and enabled chrony there. The
mismatch survives the fix at ~1ms, so it is a write-path race in SFTPGo
that the broken clock had been amplifying, not a protocol defect.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PU5ZFfQFtDTFqqhvMTWdGH
