v0.18.2 — memex check ref counts under Obsidian

[0.18.2] — 2026-09-08

Patch release. No schema changes.

Fixed

• memex check under-counted every ghost node while Obsidian was running.
  The Obsidian-native path parses unresolved verbose format=json; Obsidian
  CLI 1.12.5+ joins the sources field with ", ", but the parser split on
  newline, so every multi-source link collapsed to a single ref and the
  OVERDUE / READY / MATURING tiers never fired in that mode (the headless
  filesystem fallback was correct, which is why the bug went unnoticed). The
  parser now accepts both separators.
• Separator-drift tripwire. Obsidian's own count (link occurrences) is
  cross-checked against the parsed sources; memex check warns on stderr if
  the split is over-eager (count < sources) or if every multi-occurrence
  link collapses to one source — the signature of the bug above. Verified to
  fire on the old parser (535/535) and stay silent on the fixed one.