chore: retire dankvoice drop-in for the dank/dankvoice package

The extension's full behaviour now lives in dank/dankvoice (41/41
black-box suite against the built artifact; this branch's 26 drop-in
tests are a strict subset, names ported 1:1). Delete the drop-in and
its bats suite; repoint omp-docs/core/dankvoice.md at the package,
keeping only fleet wiring (frank-tts + @tiny resolution, the
enable_thinking hybrid law, voice/roster contract) and the cutover
procedure. kb-lint 0 violations; bats tests/ 45/45.

Refs #34

omp-docs/log.md

@@ -16,6 +16,14 @@ lesson, a few lines. Full incident narratives are recoverable from git
 (`git log --follow omp-docs/log.md`); knowledge that outlives an entry lives
 on its concept page, linked here. Never re-expand an entry in place.
 
+## 2026-10-19 — dankvoice cut over to the `dank/dankvoice` package (Refs #34)
+
+Drop-in `agent/extensions/dankvoice.ts` and its 26-test suite retired; the
+package carries the behaviour (41/41 black-box suite) and is installed with
+`pi install git:`. Law: install and prove `/say status` speaks on a box
+*before* pulling the cutover commit — the shared settings file keeps menu
+state across both transports, so the swap is stateless once installed.
+
 ## 2026-10-19 — dankvoice: silence and timeouts, root-caused (Refs #32)
 
 The humanizer's raw `fetch` to frank-zealot omitted `chat_template_kwargs.