review(55): Sage's dispatch test ruling and the transport follow-up note

BUILD.md records Sage's 2026-10-11 ruling that packages/queue/tests/
dispatch.test.mjs is in scope. FOLLOWUP-transport-code.md writes up the
transport's did-not-finish error with no .code, for the 10-12 batch.
The candidate (manifest 93fa48c1cdfe) is unchanged.

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

agents/darkwing/work/queue-55/BUILD.md

@@ -25,7 +25,7 @@ over them: 9 files, +1363/−16.
 | `packages/cli/README.md` | the intro names row 55; new section "The app" |
 | `docs/TOOLS.md` | the `mosaic` entry: the no-argument line and a four-line paragraph |
 | `scripts/mosaic` | a decided scope addition (Sage, 2026-10-11); see below |
-| `packages/queue/tests/dispatch.test.mjs` | follows from `scripts/mosaic`; my addition, for Sage to confirm; see below |
+| `packages/queue/tests/dispatch.test.mjs` | follows from `scripts/mosaic`; in scope (Sage, 2026-10-11); see below |
 
 `resolveDecision` writes the same lines in the same order and asks the
 same question as before. `decide` passes `ask = null` for `--yes` and
@@ -60,9 +60,10 @@ My first gate run had test-queue red, 26 passed and 1 failed
 pins A2's rule that every call but `queue` reaches the seat CLI exactly as
 the pre-A2 script did, and its list of calls included `[]`. Sage's approved
 change sends exactly that call somewhere else, so the pin can't hold as
-written. This file is outside the brief and outside what Sage approved. I
-changed it because the gate needs every suite green and the change follows
-directly from the approved one. Sage, please confirm or rule it out.
+written. The file is outside the brief. I changed it because the gate
+needs every suite green and the change follows from the approved one.
+Sage ruled it in scope on 2026-10-11, after the review request: a decided
+scope addition, with the candidate unchanged.
 
 The change, 16 lines in and 5 out:
 
@@ -198,6 +199,7 @@ and `node_modules` linked (`out/gate/`).
   `outcome-unknown: the bus transport did not finish`, exit 1, instead of
   the "may have recorded it" sentence. The app matches the message text
   and shows its outcome-unknown overlay, so only the verb has the gap. It
-  predates this row.
+  predates this row. Written up in `FOLLOWUP-transport-code.md`; Sage
+  queues it with the 2026-10-12 batch.
 - Talk and stop in the app, Decision Seen, and the web console stay out of
   scope, as the brief says.

agents/darkwing/work/queue-55/FOLLOWUP-transport-code.md

@@ -0,0 +1,50 @@
+# Follow-up: the transport's "did not finish" error has no code
+
+Found while building row 55 (#1544). It is not part of row 55. Sage will
+queue it with the 2026-10-12 batch. The code was already like this at
+`fe5c68fa`.
+
+## What happens
+
+`humanTransport` in `packages/cli/src/transport.mjs` (line 60 at
+`fe5c68fa`) throws this when the bus CLI child errors or times out (30 s)
+and no exit status comes back:
+
+```js
+throw new CliError("outcome-unknown: the bus transport did not finish", 1);
+```
+
+Every other error it throws sets `error.code`. This one doesn't.
+`resolveDecision` in `packages/cli/src/cli.mjs` checks
+`e.code === "outcome-unknown"` to choose its sentence:
+
+```
+outcome unknown: the broker may have recorded it. Check mosaic inbox or mosaic trail <id> before trying again
+```
+
+That check misses the transport error. So if `decision.resolve` times out,
+`mosaic decide` prints `mosaic: outcome-unknown: the bus transport did not
+finish` and exits 1. The exit code is right. The text is wrong: it doesn't
+tell the user the decision may already be recorded, or where to look. A
+retry could resolve a decision that already went through. The bus should
+refuse a second resolve, but the user hasn't been told to check first.
+
+The row 55 app is not affected. It matches the message text
+(`/^outcome[ -]unknown/`) and shows its outcome-unknown overlay, which has
+no retry.
+
+No other check in `packages/cli/src` compares `.code` against
+`outcome-unknown`. The launcher and notifier errors have their own codes.
+
+## Suggested fix
+
+1. Set `error.code = "outcome-unknown"` on the transport's did-not-finish
+   error, the same way the other two throws do.
+2. Add a test in `packages/cli/tests/cli.test.mjs`: a transport whose
+   `decision.resolve` throws that error makes `mosaic decide` print the
+   "may have recorded it" sentence, exit 1.
+3. Extend the `hang` case in `packages/cli/tests/transport.test.mjs` to
+   check `e.code === "outcome-unknown"`.
+
+Files: `packages/cli/src/transport.mjs`, `packages/cli/tests/cli.test.mjs`,
+`packages/cli/tests/transport.test.mjs`.