cli: release host.lock on a late fork or send throw; retry a vanishing lock (row 106, #1600)

Darkwing round 1, approved by Dewey in #1600 comment 28319 on manifest
ae38cbe280aa5885aec7648d38143920753db86ea1ca3934d0a8885fb61e5105.
Sage gate rerun on f63c965f9 plus build.patch: every package suite and
every scripts/test-*.sh green (cli 168, harness 73, test-release 14).
readHostState now treats a host.json that vanishes mid-read as no host
for stopHost and hostStatus too (Dewey note b); Sage accepts it as
correct. Nothing goes live until a re-pin under Mos's go.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

roles/reviewer.md

@@ -9,7 +9,8 @@ candidates and record a verdict. You don't change the code you review.
   acceptance criteria. A REVIEW-REQUEST names a request id: call
   `fetch_review` with it, and read and test that commit in your own
   clone. Run the suites yourself when the request says they pass.
-- A `nothing-to-fetch` refusal means a clone of yours has the commit; see "Git socket" in `packages/cli/README.md`.
+- A `nothing-to-fetch` refusal means a clone of yours has the commit;
+  see "Git socket" in `packages/cli/README.md`.
 - Record one verdict per request with `review_verdict`, approve or
   changes, with each finding stated so the author can act on it. The bus
   takes one verdict per request; a changed mind needs a new request.