fix(wiki): disable the backwards push mirror, park the rest until the end

Decision sorb. The mirror from axion1337.chat/wiki to sorb/wiki is off. It pointed
the wrong way: per ADR-0015 Wiki.js writes to sorb/wiki from the cluster and
canonize_wiki pulls it back to git.lab, so this mirror would have overwritten the
wiki content with git.lab's state. It had never run once - status none, no error -
which was luck rather than design.

Whether the wiki project stays at all is deliberately not decided now. sorb wants
that conversation immediately before project completion, once production readiness
is reached on everything else, so #0105 carries it as waiting with that as its
stated reason rather than as an open task somebody might pick up.

The group check's finding is acknowledged until 2026-12-31 rather than permanently.
A permanent acknowledgement would need an ADR, and writing that ADR is exactly the
decision being postponed; a date instead means that if the project outlives it, the
question asks itself again.

Both scheduled checks now reach zero open findings.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

scripts/befund_quittungen.tsv

@@ -44,3 +44,4 @@ gruppe	threadnet-operating e9c13dcf	2026-11-30	Nicht-kanonische Identitaet aus d
 
 gruppe	Projekt threadnet-wiki-deletion_scheduled-43	2026-09-30	GitLab hat das Projekt zur Loeschung vorgemerkt; es verschwindet von selbst. Faellt es bis zur Frist nicht weg, ist die Loeschung haengengeblieben und gehoert angesehen.
 gruppe	threadnet-wiki: keine CLAUDE.md-Pointer-Datei	2026-10-31	Bekannt, Rollout-Issue vorhanden (Pointer-Serie #0035-#0039). Bis zur Frist nachziehen.
+gruppe	Projekt wiki existiert in der Gruppe	2026-12-31	Geparkt bis unmittelbar vor Projektabschluss (sorb 2026-08-18, #0105). Der falsch herum laufende Push-Mirror ist bereits aus; offen ist nur noch der Verbleib des Projekts. Bewusst datiert statt dauerhaft: eine dauerhafte Quittung braeuchte einen ADR, und der waere die vorweggenommene Entscheidung.