dewey: row 81 (#1575) round 2 packet, rebased on 1e5f5958, manifest 3ce7527f

Row 61 landed on three shared webui paths; build.patch applied with --3way
clean. Folds in the cli README talk wording and the bus.mjs comment wrap.
Gate green 19:05:31-19:10:13Z; round 1 mutants 17/17 killed.

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

agents/dewey/work/queue-81/r2/build.md

@@ -0,0 +1,64 @@
+# Row 81 (#1575): Console shows the reply to a web send, round 2
+
+Owner: Dewey. Reviewer: Darkwing (lead decision 97), then Sage's gate.
+Round 1 is `../build.md` (base `ff11aa4b`, manifest `2263ff5f`), approved by
+Darkwing in comment 27783. Round 2 is a rebase after row 61 (#1550) landed
+as `6c42344d`, with the two follow-ups from round 1 folded in, as Sage asked.
+
+Base `1e5f5958` (queue rev 689, row 61 done). `build.patch` is
+`git diff --cached --binary 1e5f5958 --` the thirteen paths in
+`candidate-manifest.sha256`. Apply it with `git apply --index` to a detached
+worktree of the base; the manifest then checks 13/13 OK.
+
+## What changed from round 1
+
+- **Rebase.** Round 1's `build.patch` applied to `1e5f5958` with
+  `git apply --3way --index`, every file clean, no conflict markers. Row 61
+  changed three of the twelve paths between `ff11aa4b` and `1e5f5958`:
+  `packages/webui/src/serve.mjs` (`GET /api/task-fields`),
+  `src/public/bus.js` (the "Who may write" task section) and
+  `packages/webui/README.md`. Row 81's hunks in those files are in different
+  places. Checks:
+  - The added and removed lines of round 2's patch equal round 1's, except
+    the two follow-ups below.
+  - Every line row 61 added to the three shared files is still in the
+    candidate.
+  - Row 61's route is served by its own branch in `serve.mjs`, not
+    `busRead`, so `BUS_VERBS` and the new `id` check don't reach it. Row 61's
+    section in `bus.js` reads through `get.api`; row 81 changes only
+    `fetchRead`'s query name for `replies`, which `get.api` doesn't use.
+  No behaviour changes beyond merging the two rows.
+- **Follow-up 1: `packages/cli/README.md`**, a thirteenth path. The `talk`
+  entry said "No reply in time exits 1; the reply still lands in the inbox",
+  which reads like the timeout wording round 1 removed. It now says "the
+  reply may still come, and the next `mosaic talk` prints it", matching
+  the CLI's timeout message.
+- **Follow-up 2: `packages/webui/src/bus.mjs`.** The file's opening
+  comment had a 103-character line. Rewrapped at the block's width (76
+  at most); no words changed.
+
+## Gate (my run on the candidate)
+
+Sequential, in a worktree of `1e5f5958` with `build.patch` applied
+(`gate-summary.txt`): node suites for bus, webui, control-board and cli,
+plus tasks because row 61 made webui read `packages/tasks/fields.json`; then
+every `scripts/test-*.sh`.
+
+2026-10-12T19:05:31Z to 19:10:13Z, all rc=0:
+
+- `node --test 'packages/<p>/tests/*.test.mjs'`: bus 102/102, webui 84/84
+  (round 1's 83 plus row 61's one), control-board 124/124, cli 115/115,
+  tasks 74/74.
+- `scripts/test-auth.sh`, `test-conductor.sh`, `test-config.sh`,
+  `test-discord.sh`, `test-extension-package.sh`, `test-foundation.sh`,
+  `test-queue.sh`, `test-release.sh`, `test-task.sh`.
+
+`build.patch` applied to a second fresh worktree of `1e5f5958` also checks
+13/13; that copy is the one the mutants ran in.
+
+## Mutants
+
+Round 1's 17 mutants (`mutants.py`, its path pointed at a scratch copy of
+this candidate), rerun after the gate (`mutants.txt`): all 17 killed, and the copy checked 13/13 again afterwards. The follow-ups
+change no code, so no new mutant: the README is prose, and the `bus.mjs`
+edit is inside a comment.

agents/dewey/work/queue-81/r2/build.patch

@@ -0,0 +1,749 @@
+diff --git a/packages/bus/README.md b/packages/bus/README.md
+index 11489360..69824a30 100644
+--- a/packages/bus/README.md
++++ b/packages/bus/README.md
+@@ -130,6 +130,7 @@ an operator inspect content and delivery evidence after an uncertain result.
+ | `trail` | `{subject}`: task ref, decision UUID or message UUID. Linked records in broker write order. |
+ | `decisions` | `{list}`: `roles` or `recent`; human and reader sessions only. Open decisions routed to a role, or the last 50 closed. |
+ | `credentials` | No args; human and reader sessions only. `[{service,account,role,dateKind,date,state}]` for the capability's business, never a token, file path or variable name. |
++| `replies` | `{id}`: a message UUID; human and reader sessions only. The messages whose `in_reply_to` is that id, oldest first, at most 50. Writes nothing. |
+ 
+ ### Agent state (row 59, #1548)
+ 
+@@ -226,7 +227,7 @@ must not invoke the human CLI or work around its proof.
+ 
+ Human resolutions and launch toggles append `human.input`. Agent capabilities
+ and read-only WebUI capabilities cannot reach these operations. Reader
+-capabilities expose the human inbox plus tasks/agents/trail/decisions/credentials for one
++capabilities expose the human inbox plus tasks/agents/trail/decisions/credentials/replies for one
+ business; they do not confer mutation or resolution authority.
+ 
+ `decisions` (row 57, #1546) is for human and reader sessions only; a role
+@@ -264,6 +265,18 @@ business file changes after startup: a date, an account, or a credential
+ added or removed. Rotating a token file without editing its date changes
+ neither.
+ 
++`replies` (row 81, #1575) is also for human and reader sessions only; a role
++session gets `human-required`. It takes `{id}`, nothing else, and returns
++the business's messages whose `in_reply_to` is that id, in broker write
++order, at most `REPLIES` (50). Each row is the `messages` row `trail` gives
++the same session for the reply's id. An id that names no message in the
++session's business refuses `message-not-found`, as `message.send` does for
++`in_reply_to`; `trail` returns an empty list for such an id instead. The
++read writes no `deliveries` row, so a reply the WebUI's Sent receipt lists
++still reaches the human's next `message.receive` (`mosaic talk`). It is a
++separate verb rather than a `trail` field so `trail`'s shape and its
++empty-list answer for unknown subjects stay as they are.
++
+ ## Shared reads and adapter boundary
+ 
+ ```js
+@@ -273,6 +286,7 @@ const read = views(new Client({path,cap}));
+ await read.inbox(); await read.tasks(); await read.agents();
+ await read.trail('vikunja:3/41');
+ await read.decisions('roles'); await read.decisions('recent');
++await read.replies(messageId);
+ ```
+ 
+ S4 and S5 must import this client-only module. Neither opens `bus.sqlite`.
+diff --git a/packages/bus/src/broker.mjs b/packages/bus/src/broker.mjs
+index 5acc8329..4389b353 100644
+--- a/packages/bus/src/broker.mjs
++++ b/packages/bus/src/broker.mjs
+@@ -40,6 +40,8 @@ const GATED = new Set([
+ const CLOSED = "('resolved','withdrawn','expired')";
+ // How many closed decisions `decisions` with list 'recent' returns, newest close first.
+ export const RECENT = 50;
++// How many replies `replies` returns, oldest first.
++export const REPLIES = 50;
+ export const TASK_VERBS = Object.freeze(ACTIONS.filter((a) => a.startsWith('task.')));
+ const SELF_KINDS = new Set(['task.created', 'task.assigned', 'task.state', 'task.closed', 'task.conflict']);
+ const POLL_KINDS = new Set([
+@@ -492,7 +494,7 @@ export class Broker {
+       if (!object(args)) fail('invalid-request');
+       this.#secretCheck(args);
+       return this.#store.transaction(() => {
+-        if (s.reader && !['inbox', 'agents', 'tasks', 'trail', 'decisions', 'credentials'].includes(request.verb))
++        if (s.reader && !['inbox', 'agents', 'tasks', 'trail', 'decisions', 'credentials', 'replies'].includes(request.verb))
+           fail('read-only');
+         const result = this.#dispatch(s, request.verb, args);
+         this.#secretCheck(result);
+@@ -906,6 +908,22 @@ export class Broker {
+             };
+           });
+       }
++      // Row 81 (#1575): the replies to a message, for the Console's web-send receipt. Human and
++      // reader sessions only, like decisions. It writes no delivery or read row, so a reply it
++      // lists still reaches the next `mosaic talk`. An id naming no message in the business
++      // refuses message-not-found, as message.send does for in_reply_to; trail would return [].
++      case 'replies': {
++        if (!s.human && !s.reader) fail('human-required');
++        keys(a, ['id'], ['id']);
++        identifier(a.id);
++        if (!this.#store.get('SELECT id FROM messages WHERE id=? AND business=?', a.id, s.business))
++          fail('message-not-found');
++        return this.#store.all(
++          `SELECT * FROM messages WHERE business=? AND in_reply_to=? ORDER BY seq LIMIT ${REPLIES}`,
++          s.business,
++          a.id,
++        );
++      }
+       default:
+         fail('unknown-verb');
+     }
+diff --git a/packages/bus/src/views.mjs b/packages/bus/src/views.mjs
+index a33c0faf..27ca798f 100644
+--- a/packages/bus/src/views.mjs
++++ b/packages/bus/src/views.mjs
+@@ -7,5 +7,6 @@ export function views(client) {
+     trail: (subject) => client.call('trail', { subject }),
+     decisions: (list) => client.call('decisions', { list }),
+     credentials: () => client.call('credentials'),
++    replies: (id) => client.call('replies', { id }),
+   });
+ }
+diff --git a/packages/bus/tests/replies.test.mjs b/packages/bus/tests/replies.test.mjs
+new file mode 100644
+index 00000000..600e1daf
+--- /dev/null
++++ b/packages/bus/tests/replies.test.mjs
+@@ -0,0 +1,162 @@
++// Row 81 (#1575): `replies`, the read behind the Console's web-send receipt. The messages
++// answering one message, oldest first, at most REPLIES, for human and reader sessions. It
++// writes no delivery or read row, so the human's next message.receive (mosaic talk) still
++// gets each reply.
++import test from 'node:test';
++import assert from 'node:assert/strict';
++import { mkdtempSync, rmSync } from 'node:fs';
++import { tmpdir } from 'node:os';
++import { join } from 'node:path';
++import { Store } from '../src/store.mjs';
++import { Broker, REPLIES } from '../src/broker.mjs';
++import { views } from '../src/views.mjs';
++
++const roles = {
++  pm: { authority: { withinRole: ['message.send'], crossRole: [] } },
++  coder: { authority: { withinRole: ['message.send'], crossRole: [] } },
++};
++const businesses = {
++  demo: { id: 'demo', human: 'jason', arbiters: { technical: 'pm', delivery: 'pm' }, roles },
++  other: { id: 'other', human: 'jason', arbiters: { technical: 'pm', delivery: 'pm' }, roles },
++};
++function setup(t) {
++  const root = mkdtempSync(join(tmpdir(), 'bus-replies-'));
++  const store = new Store(root);
++  const b = new Broker({ store, businesses });
++  t.after(() => {
++    store.close();
++    rmSync(root, { recursive: true, force: true });
++  });
++  const agent = (role, business = 'demo') => {
++    const cap = b.bindLaunch({ business, role, run: `${business}-${role}-run`, harness: 'pi', address: `${business}-${role}-run` });
++    b.request(cap, { verb: 'role.claim' });
++    return cap;
++  };
++  const human = b.bindHuman({ business: 'demo', human: 'jason', via: 'cli', outsideAgent: true });
++  const reader = b.bindReader({ business: 'demo' });
++  const coder = agent('coder');
++  const pm = agent('pm');
++  // The human's web send, as row 76's Console makes it.
++  const sent = call(b, human, 'message.send', { to: 'coder', body: 'Please look at row 81.' });
++  const deliveries = () => store.all('SELECT * FROM deliveries ORDER BY seq');
++  const count = () =>
++    ['events', 'decisions', 'decision_events', 'messages', 'deliveries', 'role_claims'].map(
++      (table) => store.get(`SELECT count(*) AS n FROM ${table}`).n,
++    );
++  return { b, store, agent, human, reader, coder, pm, sent, deliveries, count };
++}
++const call = (b, cap, verb, args = {}) => b.request(cap, { verb, args });
++const reply = (b, cap, to, body, extra = {}) =>
++  call(b, cap, 'message.send', { to: 'human', body, class: 'RESULT', in_reply_to: to, ...extra });
++
++test('a reply is listed for human and reader sessions, and its delivery rows are unchanged', (t) => {
++  const { b, store, human, reader, coder, pm, sent, deliveries, count } = setup(t);
++  call(b, coder, 'message.receive');
++  const answer = reply(b, coder, sent.id, 'Done: 3 files.');
++  // Not replies to the send: a message to the human with no in_reply_to, and a reply to another message.
++  call(b, pm, 'message.send', { to: 'human', body: 'fyi' });
++  const other = call(b, human, 'message.send', { to: 'pm', body: 'Another question' });
++  reply(b, pm, other.id, 'Another answer');
++
++  const before = deliveries();
++  const counts = count();
++  for (const cap of [human, reader]) {
++    const rows = call(b, cap, 'replies', { id: sent.id });
++    assert.deepEqual(
++      rows.map((m) => [m.id, m.from_role, m.to_role, m.class, m.in_reply_to, m.body]),
++      [[answer.id, 'coder', 'human', 'RESULT', sent.id, 'Done: 3 files.']],
++    );
++    // The whole row is the messages row trail gives the same session for that id.
++    const { table, ...m } = call(b, cap, 'trail', { subject: answer.id }).find((r) => r.table === 'messages');
++    assert.equal(table, 'messages');
++    assert.deepEqual({ ...rows[0] }, m);
++  }
++  assert.deepEqual(deliveries(), before, 'no delivered or read row, nothing else either');
++  assert.deepEqual(count(), counts, 'a successful read writes nothing');
++  assert.deepEqual(
++    store.all("SELECT op FROM deliveries WHERE message=? ORDER BY seq", answer.id).map((d) => d.op),
++    ['routed'],
++  );
++});
++
++test('the reply still reaches the human message.receive (mosaic talk) after the Console showed it', (t) => {
++  const { b, human, reader, coder, sent } = setup(t);
++  const answer = reply(b, coder, sent.id, 'Done.');
++  assert.deepEqual(call(b, reader, 'replies', { id: sent.id }).map((m) => m.id), [answer.id]);
++  assert.deepEqual(call(b, human, 'replies', { id: sent.id }).map((m) => m.id), [answer.id]);
++  const got = call(b, human, 'message.receive');
++  assert.deepEqual(got.map((m) => [m.id, m.in_reply_to, m.body]), [[answer.id, sent.id, 'Done.']]);
++  assert.deepEqual(call(b, human, 'message.read', { id: answer.id }), { read: true });
++  assert.deepEqual(call(b, human, 'message.receive'), []);
++  // Once received and read it is still listed: the read is history, not an inbox.
++  assert.deepEqual(call(b, reader, 'replies', { id: sent.id }).map((m) => m.id), [answer.id]);
++});
++
++test('a message with no reply gives an empty list', (t) => {
++  const { b, human, reader, sent } = setup(t);
++  for (const cap of [human, reader]) assert.deepEqual(call(b, cap, 'replies', { id: sent.id }), []);
++});
++
++test('replies come oldest first and stop at REPLIES', (t) => {
++  const { b, reader, coder, pm, sent } = setup(t);
++  assert.equal(REPLIES, 50);
++  const ids = [];
++  for (let i = 0; i <= REPLIES; i++) ids.push(reply(b, i % 2 ? pm : coder, sent.id, `reply ${i}`).id);
++  const rows = call(b, reader, 'replies', { id: sent.id });
++  assert.equal(rows.length, REPLIES);
++  assert.deepEqual(
++    rows.map((m) => m.id),
++    ids.slice(0, REPLIES),
++  );
++  assert.deepEqual(rows.slice(0, 3).map((m) => [m.from_role, m.body]), [
++    ['coder', 'reply 0'],
++    ['pm', 'reply 1'],
++    ['coder', 'reply 2'],
++  ]);
++});
++
++test('an id that names no message in the business refuses message-not-found, and the refusal is recorded', (t) => {
++  const { b, store, agent, human, reader, pm, sent } = setup(t);
++  const elsewhere = call(b, agent('coder', 'other'), 'message.send', { to: 'human', body: 'not demo' });
++  const refusals = () => store.get("SELECT count(*) AS n FROM events WHERE kind='action.refused'").n;
++  for (const cap of [human, reader])
++    for (const id of ['00000000-0000-4000-8000-000000000000', elsewhere.id, 'vikunja:3/1']) {
++      const before = refusals();
++      assert.throws(() => call(b, cap, 'replies', { id }), { code: 'message-not-found' }, id);
++      assert.equal(refusals(), before + 1, 'the refusal is recorded');
++    }
++  // A decision id is not a message id either.
++  const d = call(b, pm, 'decision.raise', {
++    action: 'deploy',
++    target: 'release-1',
++    question: 'Deploy?',
++    options: [{ key: 'yes', text: 'Allow' }, { key: 'no', text: 'Decline' }],
++    recommendation: 'yes',
++    blocking: false,
++  });
++  assert.throws(() => call(b, reader, 'replies', { id: d.id }), { code: 'message-not-found' });
++  // The other business's reader finds its own message, not demo's.
++  const otherReader = b.bindReader({ business: 'other' });
++  assert.deepEqual(call(b, otherReader, 'replies', { id: elsewhere.id }), []);
++  assert.throws(() => call(b, otherReader, 'replies', { id: sent.id }), { code: 'message-not-found' });
++});
++
++test('strict arguments; a role session gets human-required', (t) => {
++  const { b, human, reader, coder, pm, sent } = setup(t);
++  for (const cap of [human, reader])
++    for (const args of [{}, { id: '' }, { id: 7 }, { id: [sent.id] }, { id: '<b>' }, { id: sent.id, limit: 5 }, { subject: sent.id }])
++      assert.throws(() => call(b, cap, 'replies', args), { code: 'invalid-request' }, JSON.stringify(args));
++  // A role can't read the human's replies, even to a message it sent itself.
++  const own = call(b, pm, 'message.send', { to: 'coder', body: 'hi' });
++  for (const [cap, id] of [[coder, sent.id], [pm, own.id]])
++    assert.throws(() => call(b, cap, 'replies', { id }), { code: 'human-required' });
++  // The reader's other limits stand.
++  assert.throws(() => call(b, reader, 'message.receive'), { code: 'read-only' });
++});
++
++test('views passes replies through as one call with the id', async () => {
++  const calls = [];
++  const read = views({ call: async (verb, args) => (calls.push([verb, args]), []) });
++  assert.deepEqual(await read.replies('m-1'), []);
++  assert.deepEqual(calls, [['replies', { id: 'm-1' }]]);
++});
+diff --git a/packages/cli/README.md b/packages/cli/README.md
+index 72fe2669..c90fc3d7 100644
+--- a/packages/cli/README.md
++++ b/packages/cli/README.md
+@@ -61,8 +61,8 @@ mosaic launches list [--json]
+ - `talk` sends `<text>` to the role as a REQUEST, then polls the human's
+   inbox every 2 s for up to `--wait` seconds (default 900). It prints every
+   message that arrives and marks it read, and stops at the reply to its
+-  REQUEST. No reply in time exits 1; the reply still lands in the inbox.
+-  `--wait 0` only sends.
++  REQUEST. No reply in time exits 1; the reply may still come, and the next
++  `mosaic talk` prints it. `--wait 0` only sends.
+ - `launches off` and `on` are the broker's `launch.revoke` and
+   `launch.restore`. While off, every `role.launch` refuses with
+   `launch-revoked`; running sessions keep running. Stop them with `stop`.
+diff --git a/packages/cli/src/cli.mjs b/packages/cli/src/cli.mjs
+index 8cb07c52..6cf694a2 100644
+--- a/packages/cli/src/cli.mjs
++++ b/packages/cli/src/cli.mjs
+@@ -209,7 +209,7 @@ async function talk(rest, io, deps) {
+       if (m.in_reply_to === sent.id) answered = true;
+     }
+     if (answered) return;
+-    if (Date.now() >= deadline) throw new CliError(`no reply from ${to} within ${wait} s; it may still come, and the next mosaic talk or mosaic inbox shows it`, 1);
++    if (Date.now() >= deadline) throw new CliError(`no reply from ${to} within ${wait} s; it may still come, and the next mosaic talk shows it`, 1);
+     await new Promise((r) => setTimeout(r, pollMs));
+   }
+ }
+diff --git a/packages/cli/tests/verbs.test.mjs b/packages/cli/tests/verbs.test.mjs
+index 41432793..6bdbc679 100644
+--- a/packages/cli/tests/verbs.test.mjs
++++ b/packages/cli/tests/verbs.test.mjs
+@@ -63,7 +63,22 @@ test("talk --wait 0 only sends; no reply within --wait exits 1 and says where it
+   assert.deepEqual(s.calls.map((c) => c.verb), ["message.send"]);
+   const slow = await s.run(["talk", "coder", "hello", "--wait", "1", "--business", "demo"]);
+   assert.equal(slow.code, 1);
+-  assert.match(slow.error, /no reply from coder within 1 s; .*mosaic inbox/);
++  // Row 81 (#1575): only mosaic talk shows a late reply; mosaic inbox lists decisions, never messages.
++  assert.equal(slow.error, "no reply from coder within 1 s; it may still come, and the next mosaic talk shows it");
++});
++
++test("a late reply the Console has listed still reaches the next talk", async (t) => {
++  const s = setup(t);
++  assert.equal((await s.run(["talk", "coder", "hello", "--wait", "1", "--business", "demo"])).code, 1);
++  const { id } = s.store.get("SELECT id FROM messages WHERE from_role='human' ORDER BY seq DESC LIMIT 1");
++  assert.equal(call(s.b, s.coder, "message.receive")[0].id, id);
++  const answer = call(s.b, s.coder, "message.send", { to: "human", body: "late answer", class: "RESULT", in_reply_to: id });
++  // What the Console's send receipt reads, through its reader session.
++  assert.deepEqual(s.read("replies", { id }).map((m) => m.id), [answer.id]);
++  const next = await s.run(["talk", "coder", "again", "--wait", "1", "--business", "demo"]);
++  assert.equal(next.code, 1, "no answer to the second one");
++  assert.match(next.io.out.text, new RegExp(`coder \\(RESULT, re ${id.slice(0, 8)}\\) ${answer.id.slice(0, 8)}:\nlate answer\n`));
++  assert.deepEqual(s.calls.filter((c) => c.verb === "message.read").map((c) => c.args.id), [answer.id]);
+ });
+ 
+ test("talk, stop and launches off/on refuse inside an agent run; bad arguments are usage errors", async (t) => {
+diff --git a/packages/webui/README.md b/packages/webui/README.md
+index 48aeb90b..be26d050 100644
+--- a/packages/webui/README.md
++++ b/packages/webui/README.md
+@@ -180,8 +180,9 @@ On the page:
+   memory like a Reply draft. Reloading the page loses it. Send is disabled
+   while a send is pending.
+ - Sent shows the message id and links its trail, `#/trail/message/<id>`:
+-  the message and its deliveries. A reply is not in it. The text is cleared
+-  unless it was edited during the send.
++  the message and its deliveries. A reply is not in the trail; it shows
++  under the receipt (below). The text is cleared unless it was edited
++  during the send.
+ - Not sent shows the broker's code and keeps the draft. A redirect counts
+   as not sent: the Console never redirects this route, so only the sign-in
+   proxy does, when its session has expired. The page asks for a reload to
+@@ -192,9 +193,19 @@ On the page:
+   unknown, here and on the board's Reply, since a proxy can answer it
+   after forwarding the request (Envoy's `stream_idle_timeout`).
+ 
+-The role's reply comes back as a message to the human. The Console doesn't
+-show it yet; that view is row 81 (#1575). Jason's next `mosaic talk` in a
+-terminal prints it, within talk's limits:
++The role's reply comes back as a message to the human with `in_reply_to`
++set to the sent message's id. Since row 81 (#1575) the Sent receipt lists
++those replies, oldest first, each with its role, time, class, body and a
++trail link. It reads them with the bus `replies` read on every render, so a
++reply shows on the next ten-second refresh or Read again. "No reply yet"
++means the read returned none; "could not be read" means it failed, and the
++next refresh tries again. The bus returns at most 50; at 50 the receipt says
++only the first 50 show. The list belongs to the last Sent receipt: a new
++send starts its own, and reloading the page drops it.
++
++The Console only shows replies. It never receives a message or marks one
++delivered or read: `replies` writes no `deliveries` row. So Jason's next
++`mosaic talk` in a terminal still prints each reply, within talk's limits:
+ 
+ - talk receives only after it sends its own message;
+ - `--wait 0` returns straight after the send and receives nothing;
+@@ -394,10 +405,13 @@ session reader or transport is implemented here. The session reader is
+ `packages/conversation`, served by the board.
+ 
+ GET `/api/bus/inbox`, `/api/bus/tasks`, `/api/bus/agents`,
+-`/api/bus/trail?subject=<id>`, `/api/bus/decisions?list=roles|recent` and
+-`/api/bus/credentials` are the bus reads (`src/bus.mjs`). Any other method is 405. The subject must match
+-the broker's identifier rule, and the list must be `roles` or `recent`, else
+-400. `decisions` (row 57, #1546) is for the Inbox tabs "Routed to roles" and
++`/api/bus/trail?subject=<id>`, `/api/bus/decisions?list=roles|recent`,
++`/api/bus/credentials` and `/api/bus/replies?id=<message id>` are the bus
++reads (`src/bus.mjs`). Any other method is 405. The subject and the id must
++match the broker's identifier rule, and the list must be `roles` or
++`recent`, else 400. `replies` (row 81, #1575) is the messages whose
++`in_reply_to` is that id, for the Sent receipt; the bus refuses an id that
++names no message (`message-not-found`, 400). `decisions` (row 57, #1546) is for the Inbox tabs "Routed to roles" and
+ "Recent"; "Human and reader paths" in `packages/bus/README.md` has what each
+ list holds. `credentials` (row 60, #1549) is the bus host's credential
+ status: service, account, role, date and state for each credential it
+diff --git a/packages/webui/src/bus.mjs b/packages/webui/src/bus.mjs
+index 379503f5..78f7d647 100644
+--- a/packages/webui/src/bus.mjs
++++ b/packages/webui/src/bus.mjs
+@@ -2,11 +2,11 @@
+ // transport (packages/bus/src/human-cli.mjs, lead decision 70) as a child
+ // with spawn, not spawnSync, so one slow read never stalls the HTTP server.
+ // Only the four verbs of the Q1 module (lead decision 56), row 57's
+-// `decisions` and row 60's `credentials` reads are reachable as reads: no
+-// read writes, not even seen (Q4). The one write is row 76's human
+-// `message.send` (lead decision 95), built by the CLI only with --send. The
+-// bus does the proof; a server started inside an agent run gets
+-// `human-required` from the broker.
++// `decisions`, row 60's `credentials` and row 81's `replies` reads are
++// reachable as reads: no read writes, not even seen or delivered (Q4). The
++// one write is row 76's human `message.send` (lead decision 95), built by
++// the CLI only with --send. The bus does the proof; a server started inside
++// an agent run gets `human-required` from the broker.
+ 
+ import { spawn } from 'node:child_process';
+ import { HUMAN_CLI } from '../../cli/src/transport.mjs';
+diff --git a/packages/webui/src/public/bus.js b/packages/webui/src/public/bus.js
+index a5e447a9..8b4bcf43 100644
+--- a/packages/webui/src/public/bus.js
++++ b/packages/webui/src/public/bus.js
+@@ -24,10 +24,11 @@
+   // can show what was read before, labelled as such.
+   const last = new Map();
+   class ReadError extends Error { constructor(code, message, status) { super(message); this.code = code; this.status = status; } }
++  // `replies` takes a message id as `id`; trail takes `subject`.
+   async function fetchRead(verb, subject) {
+     let res, body;
+     try {
+-      res = await fetch(`/api/bus/${verb}${subject === undefined ? '' : `?subject=${enc(subject)}`}`, { cache: 'no-store' });
++      res = await fetch(`/api/bus/${verb}${subject === undefined ? '' : `?${verb === 'replies' ? 'id' : 'subject'}=${enc(subject)}`}`, { cache: 'no-store' });
+       body = await res.json();
+     } catch { throw new ReadError('unreachable', 'The Console server did not answer.', 0); }
+     if (!res.ok || !body || !Array.isArray(body.rows)) throw new ReadError(typeof body?.error === 'string' ? body.error : 'invalid-response', typeof body?.message === 'string' ? body.message : `HTTP ${res.status}`, res.status);
+@@ -247,19 +248,27 @@
+   // a send can pass here (`send` in /api/config). The draft lives in `draft`, not the DOM, so the
+   // 10 s refresh redraws the form without losing it. Nothing resends: an unknown outcome stays
+   // unknown and the draft stays put.
+-  let canSend = false, sendRoles = null, sending = false, receipt = null;
++  // Row 81 (#1575): a sent receipt lists the replies to that message, read with `replies` on each
++  // render. That read marks nothing, so every reply still reaches the next `mosaic talk`.
++  let canSend = false, sendRoles = null, sending = false, receipt = null, replies = [];
++  const REPLIES = 50; // the broker's cap
++  function repliesHtml() {
++    if (replies === null) return '<p class="small warn">The replies to it could not be read. Read again to retry; <code>mosaic talk</code> in a terminal prints them.</p>';
++    if (!replies.length) return '<p class="small muted">No reply yet. One shows here when the role answers, as the page refreshes.</p>';
++    return `<h3 class="small">Replies <span class="count">${replies.length}</span></h3><ol class="s1-plain s1-replies">${replies.map(m => `<li><p class="small muted">${txt(m.from_role)} ${when(m.at)} · ${txt(m.class)} · <a href="#/trail/message/${enc(m.id)}">trail</a></p><p class="s1-q">${txt(m.body)}</p></li>`).join('')}</ol>${replies.length >= REPLIES ? `<p class="small muted">The first ${REPLIES} replies show here.</p>` : ''}`;
++  }
+   const draft = { to: '', body: '' };
+   function composerHtml() {
+     const roles = sendRoles ? [...new Set([...sendRoles, ...(draft.to && !sendRoles.includes(draft.to) ? [draft.to] : [])])] : null;
+     const options = roles ? roles.map(r => `<option value="${esc(r)}"${r === draft.to ? ' selected' : ''}>${txt(r)}${sendRoles.includes(r) ? '' : ' (not held now)'}</option>`).join('') : '';
+     const r = receipt;
+     const said = !r ? '' : r.kind === 'sent'
+-      ? `<p class="receipt">Sent to ${txt(r.to)} ${when(r.at)}, message <code>${txt(short(r.id))}</code>. <a href="#/trail/message/${enc(r.id)}">Its trail</a>.</p>`
++      ? `<p class="receipt">Sent to ${txt(r.to)} ${when(r.at)}, message <code>${txt(short(r.id))}</code>. <a href="#/trail/message/${enc(r.id)}">Its trail</a>.</p>${repliesHtml()}`
+       : r.kind === 'refused'
+         ? `<p class="receipt failed">Not sent to ${txt(r.to)}: ${txt(r.message)}${r.message.includes(`(${r.code})`) ? '' : ` (<code>${txt(r.code)}</code>)`}. The draft is kept.</p>`
+         : `<p class="receipt failed">Outcome unknown: the message to ${txt(r.to)} may have been sent. Nothing was sent again, and the draft is kept. The bus gave no message id, so there is no trail to link: before sending again, look for it on the role's side or in the bus trail from a terminal.</p>`;
+     return `<section class="panel s1-send" id="send-section" aria-labelledby="b-send"><h2 id="b-send">Message a role</h2>
+-      <p class="small muted">Goes to the role as a message from the human, the same way as one sent from the CLI, with class INFO. A reply comes back to you as a message, which this Console does not show yet. The next <code>mosaic talk</code> in a terminal prints it, after sending its own message.</p>
++      <p class="small muted">Goes to the role as a message from the human, the same way as one sent from the CLI, with class INFO. Replies to it show under the receipt. The Console only shows them and never marks one delivered or read, so the next <code>mosaic talk</code> in a terminal still prints each one.</p>
+       ${roles === null ? '<p class="small warn">The held roles could not be read, so there is nothing to pick. Read again to retry.</p>' : !roles.length ? '<p class="small muted">No role is held right now, so there is nothing to pick.</p>' : ''}
+       <form id="send-form" class="reply-form" novalidate><label for="send-to">To</label><select id="send-to" data-field="to"><option value="">Choose a held role</option>${options}</select>
+       <label for="send-body">Message</label><textarea id="send-body" data-field="body" rows="4" placeholder="What should the role do?">${esc(draft.body)}</textarea>
+@@ -268,6 +277,13 @@
+   async function composer(get) {
+     if (!canSend) return '';
+     try { sendRoles = (await get('agents')).map(c => c.role).filter(r => typeof r === 'string' && SAFE.test(r)); } catch { sendRoles = null; }
++    if (receipt?.kind === 'sent') {
++      const r = receipt;
++      let rows = null;
++      try { rows = await get('replies', r.id); } catch {}
++      // A send that finished during this read has its own receipt; leave it alone.
++      if (receipt === r) replies = Array.isArray(rows) ? rows : null;
++    }
+     return composerHtml();
+   }
+   // Redraw only the form, keeping focus, after a send changes its state.
+@@ -772,7 +788,7 @@
+     if (res?.type === 'opaqueredirect') {
+       receipt = { kind: 'refused', to, code: 'sign-in', message: 'the sign-in proxy redirected it, so it never reached the Console; reload the page to sign in again' };
+     } else if (res?.ok && SAFE.test(body?.id ?? '')) {
+-      receipt = { kind: 'sent', to, id: body.id, at: body.at };
++      receipt = { kind: 'sent', to, id: body.id, at: body.at }; replies = [];
+       if (draft.body === text) draft.body = ''; // keep text typed while the send was in flight
+     } else if (res && !res.ok && ((res.status >= 400 && res.status < 500 && res.status !== 408) || body?.sent === false)) {
+       receipt = { kind: 'refused', to, code: typeof body?.error === 'string' ? body.error : `HTTP ${res.status}`, message: typeof body?.message === 'string' ? body.message.replace(/^not sent: /, '') : 'refused' };
+diff --git a/packages/webui/src/serve.mjs b/packages/webui/src/serve.mjs
+index f398eca1..3d184d2f 100644
+--- a/packages/webui/src/serve.mjs
++++ b/packages/webui/src/serve.mjs
+@@ -47,8 +47,9 @@ async function body(req, max = 4096) {
+ }
+ // Slice 1 S5 (#1522): GET only, the four Q1 verbs, nothing else (lead decision 56, Q4).
+ // Row 57 (#1546) adds `decisions`, also a read, for the Inbox tabs. Row 60
+-// (#1549) adds `credentials`: what the bus host loaded, metadata only.
+-const BUS_VERBS = ['inbox', 'tasks', 'agents', 'trail', 'decisions', 'credentials'];
++// (#1549) adds `credentials`: what the bus host loaded, metadata only. Row 81
++// (#1575) adds `replies`: the messages answering one message, for the send receipt.
++const BUS_VERBS = ['inbox', 'tasks', 'agents', 'trail', 'decisions', 'credentials', 'replies'];
+ const DECISION_LISTS = ['roles', 'recent'];
+ async function busRead(res, bus, verb, search) {
+   let arg;
+@@ -60,6 +61,10 @@ async function busRead(res, bus, verb, search) {
+     arg = new URLSearchParams(search).get('list');
+     if (!DECISION_LISTS.includes(arg)) return json(res, 400, { error: 'invalid-request', message: 'list must be roles or recent' });
+   }
++  if (verb === 'replies') {
++    arg = new URLSearchParams(search).get('id');
++    if (!subjectOk(arg)) return json(res, 400, { error: 'invalid-request', message: 'id must be a message id' });
++  }
+   if (!bus) return json(res, 503, { error: 'not-configured', message: 'the Console has no bus configured' });
+   try {
+     const rows = await bus[verb](arg);
+diff --git a/packages/webui/tests/bus.test.mjs b/packages/webui/tests/bus.test.mjs
+index a243ae7e..6fb74cce 100644
+--- a/packages/webui/tests/bus.test.mjs
++++ b/packages/webui/tests/bus.test.mjs
+@@ -150,9 +150,53 @@ test('credentials route serves the broker credential status from the reader view
+   assert.deepEqual(calls, [['credentials', {}]]);
+ });
+ 
++// Row 81 (#1575): the replies to one message, for the Console's send receipt. The bus refuses an
++// id that names no message; a malformed one never reaches it.
++test('replies route serves the replies to one message from the reader view', async t => {
++  const store = new Store(tmp(t, 'webui-bus-replies-'));
++  t.after(() => store.close());
++  const b = new Broker({ store, businesses });
++  const coder = b.bindLaunch({ business: 'demo', role: 'coder', run: 'coder-run', harness: 'pi', address: 'coder-run' });
++  b.request(coder, { verb: 'role.claim' });
++  const human = b.bindHuman({ business: 'demo', human: 'jason', via: 'cli', outsideAgent: true });
++  const sent = b.request(human, { verb: 'message.send', args: { to: 'coder', body: 'Please look.' } });
++  const quiet = b.request(human, { verb: 'message.send', args: { to: 'coder', body: 'No answer to this one.' } });
++  const answer = b.request(coder, { verb: 'message.send', args: { to: 'human', body: `Done. ${HOSTILE}`, class: 'RESULT', in_reply_to: sent.id } });
++  const reader = b.bindReader({ business: 'demo' });
++  const calls = [];
++  // A broker refusal comes back from the transport as a BusReadError carrying its code.
++  const call = async (verb, args = {}) => {
++    calls.push([verb, args]);
++    try { return structuredClone(b.request(reader, { verb, args })); } catch (err) { throw new BusReadError(err.code); }
++  };
++  const bus = views({ call });
++  const web = await startServer({ port: 0, board: 'http://127.0.0.1:9', bus });
++  t.after(() => close(web));
++  const base = `http://127.0.0.1:${web.address().port}`;
++  const read = async path => { const r = await fetch(base + path); return { status: r.status, cache: r.headers.get('cache-control'), body: await r.json() }; };
++  const deliveries = () => store.all('SELECT * FROM deliveries ORDER BY seq');
++  const before = deliveries();
++
++  const r = await read('/api/bus/replies?id=' + sent.id);
++  assert.equal(r.status, 200); assert.equal(r.cache, 'no-store');
++  assert.match(r.body.at, /^\d{4}-\d\d-\d\dT/);
++  assert.deepEqual(r.body.rows.map(m => [m.id, m.from_role, m.class, m.in_reply_to, m.body]), [[answer.id, 'coder', 'RESULT', sent.id, `Done. ${HOSTILE}`]]);
++  assert.deepEqual((await read('/api/bus/replies?id=' + quiet.id)).body.rows, []);
++  const unknown = await read('/api/bus/replies?id=00000000-0000-4000-8000-000000000000');
++  assert.deepEqual([unknown.status, unknown.body.error], [400, 'message-not-found']);
++  assert.deepEqual(deliveries(), before, 'no delivered or read row');
++  assert.deepEqual(calls, [['replies', { id: sent.id }], ['replies', { id: quiet.id }], ['replies', { id: '00000000-0000-4000-8000-000000000000' }]]);
++
++  // A missing or malformed id never reaches the bus; trail's `subject` is not this read's argument.
++  const n = calls.length;
++  for (const q of ['', '?id=', '?id=' + 'a'.repeat(161), '?id=-x', '?id=a%20b', '?id=%3Cb%3E', '?subject=' + sent.id])
++    assert.deepEqual([q, (await read('/api/bus/replies' + q)).body.error], [q, 'invalid-request']);
++  assert.equal(calls.length, n);
++});
++
+ test('bus routes are GET-only, have no write verb, and keep the same-origin checks', async t => {
+   const calls = [];
+-  const bus = Object.fromEntries(['inbox', 'tasks', 'agents', 'trail', 'decisions', 'credentials'].map(v => [v, async () => { calls.push(v); return []; }]));
++  const bus = Object.fromEntries(['inbox', 'tasks', 'agents', 'trail', 'decisions', 'credentials', 'replies'].map(v => [v, async () => { calls.push(v); return []; }]));
+   const web = await startServer({ port: 0, board: 'http://127.0.0.1:9', bus });
+   t.after(() => close(web));
+   const base = `http://127.0.0.1:${web.address().port}`;
+@@ -160,6 +204,7 @@ test('bus routes are GET-only, have no write verb, and keep the same-origin chec
+     assert.equal((await fetch(base + '/api/bus/inbox', { method })).status, 405, method);
+     assert.equal((await fetch(base + '/api/bus/decisions?list=roles', { method })).status, 405, method);
+     assert.equal((await fetch(base + '/api/bus/credentials', { method })).status, 405, method);
++    assert.equal((await fetch(base + '/api/bus/replies?id=m-1', { method })).status, 405, method);
+   }
+   for (const path of ['/api/bus/decide', '/api/bus/seen', '/api/bus/', '/api/bus/inbox/x', '/api/bus/request', '/api/bus/raise']) {
+     assert.equal((await fetch(base + path)).status, 404, path);
+@@ -192,7 +237,7 @@ test('bus refusals map to statuses and never carry a path or a stack', async t =
+   const unset = await fetch(`http://127.0.0.1:${none.address().port}/api/bus/agents`);
+   assert.deepEqual([unset.status, (await unset.json()).error], [503, 'not-configured']);
+   // Row 67 (#1560): with no bus, a bad argument is still a 400; the request is checked first.
+-  for (const [query, status, error] of [['decisions?list=bad', 400, 'invalid-request'], ['decisions?list=roles', 503, 'not-configured'], ['trail?subject=%3C', 400, 'invalid-request']]) {
++  for (const [query, status, error] of [['decisions?list=bad', 400, 'invalid-request'], ['decisions?list=roles', 503, 'not-configured'], ['trail?subject=%3C', 400, 'invalid-request'], ['replies?id=%3C', 400, 'invalid-request'], ['replies?id=m-1', 503, 'not-configured']]) {
+     const r = await fetch(`http://127.0.0.1:${none.address().port}/api/bus/${query}`);
+     assert.deepEqual([query, r.status, (await r.json()).error], [query, status, error]);
+   }
+@@ -250,6 +295,7 @@ test('busReader takes --business, else the live bus host, else refuses', async t
+   assert.equal((await pinned.inbox()).request.business, 'pinned');
+   assert.deepEqual((await pinned.decisions('recent')).request, { business: 'pinned', verb: 'decisions', args: { list: 'recent' } });
+   assert.deepEqual((await pinned.credentials()).request, { business: 'pinned', verb: 'credentials', args: {} });
++  assert.deepEqual((await pinned.replies('m-1')).request, { business: 'pinned', verb: 'replies', args: { id: 'm-1' } });
+ 
+   const reader = busReader({ dataRoot, socket: 'sock', cli });
+   const code = () => reader.agents().then(() => 'resolved', e => e.code);
+diff --git a/packages/webui/tests/send-browser.test.mjs b/packages/webui/tests/send-browser.test.mjs
+index dd7c5668..675c813e 100644
+--- a/packages/webui/tests/send-browser.test.mjs
++++ b/packages/webui/tests/send-browser.test.mjs
+@@ -13,9 +13,11 @@ import { Store } from '../../bus/src/store.mjs';
+ import { Broker } from '../../bus/src/broker.mjs';
+ import { views } from '../../bus/src/views.mjs';
+ import { startServer } from '../src/serve.mjs';
++import { BusReadError } from '../src/bus.mjs';
+ import { browser } from './browser.mjs';
+ import { fixture, close } from './fixture.mjs';
+ 
++const HOSTILE = '<script>window.injected=1</script><img src=x onerror="window.injected=2"> \u001b[31mred \u202eevil';
+ const businesses = {
+   demo: {
+     id: 'demo', human: 'jason', arbiters: { technical: 'cto', delivery: 'pm' },
+@@ -100,7 +102,7 @@ test('the send box: held roles, the draft and caret across a refresh, each recei
+     await b.navigate(`${base}#/inbox`);
+     await wait('document.querySelector("#send-form")');
+     assert.equal(await text('#send-section h2'), 'Message a role');
+-    assert.match(await text('#send-section'), /does not show yet\. The next mosaic talk in a terminal prints it, after sending its own message\./);
++    assert.match(await text('#send-section'), /Replies to it show under the receipt\. The Console only shows them and never marks one delivered or read, so the next mosaic talk in a terminal still prints each one\./);
+     assert.deepEqual(await b.evaluate('[...document.querySelectorAll("#send-to option")].map(o => [o.value, o.textContent])'), [['', 'Choose a held role'], ['coder', 'coder'], ['pm', 'pm']]);
+ 
+     // Nothing to send is refused in the page, without a request.
+@@ -193,3 +195,135 @@ test('the send box: held roles, the draft and caret across a refresh, each recei
+     rmSync(root, { recursive: true, force: true });
+   }
+ });
++
++// Row 81 (#1575): a sent receipt lists the replies to that message, read with `replies` on each
++// render. The read writes no delivery or read row, so the human's next message.receive
++// (mosaic talk) still gets every reply the page showed.
++test('a sent receipt lists its replies as the page refreshes, oldest first and capped, and marks none delivered or read', { timeout: 120000 }, async () => {
++  const root = mkdtempSync(join(tmpdir(), 'webui-replies-browser-'));
++  const store = new Store(root), b0 = new Broker({ store, businesses });
++  const caps = {};
++  for (const role of ['pm', 'coder']) b0.request(caps[role] = b0.bindLaunch({ business: 'demo', role, run: `${role}-run`, harness: 'pi', address: `${role}-run` }), { verb: 'role.claim' });
++  const human = b0.bindHuman({ business: 'demo', human: 'jason', via: 'cli', outsideAgent: true });
++  const sent = b0.request(human, { verb: 'message.send', args: { to: 'coder', body: 'Please look at row 81.' } });
++  const other = b0.request(human, { verb: 'message.send', args: { to: 'pm', body: 'Another question' } });
++  const reader = b0.bindReader({ business: 'demo' });
++  // A broker refusal comes back from the transport as a BusReadError carrying its code. While
++  // `hold` is set, a replies read waits for it, counted in `held`.
++  let hold = null, held = 0;
++  const bus = views({
++    call: async (verb, args = {}) => {
++      if (verb === 'replies' && hold) { held++; await hold.promise; }
++      try { return structuredClone(b0.request(reader, { verb, args })); } catch (err) { throw new BusReadError(err.code); }
++    },
++  });
++  const f = await fixture(), b = await browser();
++  const web = await startServer({ port: 0, board: f.boardURL, bus }), base = `http://127.0.0.1:${web.address().port}/`;
++  const wait = (expr, tries = 100) => b.evaluate(`(async()=>{for(let i=0;i<${tries};i++){if(${expr})return true;await new Promise(r=>setTimeout(r,50))}throw new Error('Condition timed out: '+${JSON.stringify(expr)})})()`);
++  const text = sel => b.evaluate(`document.querySelector(${JSON.stringify(sel)})?.textContent ?? null`);
++  const set = (sel, v) => b.evaluate(`(()=>{const e=document.querySelector(${JSON.stringify(sel)});e.value=${JSON.stringify(v)};e.dispatchEvent(new Event('input',{bubbles:true}));return true})()`);
++  const send = async (id, body) => {
++    await set('#send-body', body);
++    await b.evaluate(`window.__answers.push(${JSON.stringify({ status: 200, body: { id, at: new Date().toISOString() } })}), true`);
++    await b.evaluate('document.querySelector("#send-form [data-send]").click(), true');
++    await wait('document.querySelector("#send-section .receipt") && document.querySelector("#send-form [data-send]").getAttribute("aria-disabled") === "false"');
++  };
++  const refresh = async () => {
++    await b.evaluate('(()=>{document.querySelector("#send-section").dataset.before="1";document.querySelector("#refresh").click();return true})()');
++    await wait('!document.querySelector("#send-section")?.dataset.before && !document.querySelector("#bus-view [aria-busy]")');
++  };
++  const items = () => b.evaluate('[...document.querySelectorAll("#send-section .s1-replies li")].map(li => [...li.querySelectorAll("p")].map(p => p.textContent).concat(li.querySelector("a").getAttribute("href")))');
++  const reply = (role, to, body) => b0.request(caps[role], { verb: 'message.send', args: { to: 'human', body, class: 'RESULT', ...(to ? { in_reply_to: to } : {}) } });
++  const deliveries = () => store.all('SELECT * FROM deliveries ORDER BY seq').map(d => ({ ...d }));
++  const NONE = 'No reply yet. One shows here when the role answers, as the page refreshes.';
++  try {
++    await b.call('Page.addScriptToEvaluateOnNewDocument', { source: STUB });
++    await b.viewport(1280);
++    await b.navigate(`${base}#/inbox`);
++    await wait('document.querySelector("#send-form")');
++    await set('#send-to', 'coder');
++
++    // Straight after the send there is no reply.
++    await send(sent.id, 'Please look at row 81.');
++    assert.match(await text('#send-section .receipt'), new RegExp(`^Sent to coder .*, message ${sent.id.slice(0, 8)}\\. Its trail\\.$`));
++    assert.match(await text('#send-section'), new RegExp(NONE.replace(/\./g, '\\.')));
++    assert.deepEqual(await items(), []);
++
++    // Replies to the sent message show on Read again, oldest first, as text. A reply to another
++    // message and a message with no in_reply_to don't.
++    const first = reply('coder', sent.id, `Done: 3 files. ${HOSTILE}`);
++    reply('pm', other.id, 'Another answer');
++    reply('pm', null, 'fyi');
++    const second = reply('pm', sent.id, 'Second look.');
++    let before = deliveries();
++    await refresh();
++    assert.deepEqual(deliveries(), before, 'no delivered or read row');
++    assert.equal(await text('#send-section h3'), 'Replies 2');
++    const two = await items();
++    assert.deepEqual(two.map(([meta, , href]) => [meta.split(' ')[0], / · RESULT · trail$/.test(meta), href]), [['coder', true, `#/trail/message/${first.id}`], ['pm', true, `#/trail/message/${second.id}`]]);
++    assert.match(two[0][1], /^Done: 3 files\. <script>window\.injected=1<\/script><img src=x onerror="window\.injected=2">/);
++    assert.equal(two[1][1], 'Second look.');
++    assert.equal(await b.evaluate('!!window.injected || !!document.querySelector("#send-section script, #send-section img")'), false);
++    assert.match(await text('#send-section .receipt'), /^Sent to coder /);
++    assert.doesNotMatch(await text('#send-section'), /The first 50 replies/);
++
++    // The page's own refresh reads them too, with no click.
++    const third = reply('coder', sent.id, 'Third.');
++    before = deliveries();
++    await wait('document.querySelectorAll("#send-section .s1-replies li").length === 3', 300);
++    assert.deepEqual((await items()).map(i => i[1]).slice(1), ['Second look.', 'Third.']);
++
++    // Showing them wrote nothing: mosaic talk's message.receive still gets each one, and once
++    // the human has received and read them they are still listed.
++    assert.deepEqual(deliveries(), before, 'no delivered or read row');
++    const got = b0.request(human, { verb: 'message.receive' });
++    assert.deepEqual(got.filter(m => m.in_reply_to === sent.id).map(m => m.id), [first.id, second.id, third.id]);
++    for (const m of got) b0.request(human, { verb: 'message.read', args: { id: m.id } });
++    await refresh();
++    assert.equal((await items()).length, 3);
++
++    // The broker's cap: 51 replies show the first 50 and say so.
++    for (let i = 0; i < 48; i++) reply(i % 2 ? 'pm' : 'coder', sent.id, `reply ${i}`);
++    await refresh();
++    const capped = await items();
++    assert.equal(capped.length, 50);
++    assert.deepEqual([capped[0][1].slice(0, 5), capped[3][1], capped[49][1]], ['Done:', 'reply 0', 'reply 46']);
++    assert.equal(await text('#send-section h3'), 'Replies 50');
++    assert.match(await text('#send-section'), /The first 50 replies show here\./);
++
++    // A sent id the bus doesn't know: its replies can't be read, which the receipt says; the
++    // Inbox stays fresh.
++    await send('00000000-0000-4000-8000-000000000000', 'Lost?');
++    assert.match(await text('#send-section'), new RegExp(NONE.replace(/\./g, '\\.')));
++    await refresh();
++    assert.match(await text('#send-section'), /The replies to it could not be read\. Read again to retry; mosaic talk in a terminal prints them\./);
++    assert.deepEqual(await items(), []);
++    assert.equal(await b.evaluate('!!document.querySelector("#bus-view .s1-stale, #bus-view .banner")'), false);
++    assert.match(await text('#send-section .receipt'), /, message 00000000\. Its trail\.$/);
++
++    // A new send starts its own list.
++    await send(sent.id, 'Once more.');
++    assert.deepEqual(await items(), []);
++    await refresh();
++    assert.equal((await items()).length, 50);
++
++    // A send that finishes while a replies read is out keeps its own list: that read's answer is
++    // the earlier message's replies, so it is dropped and the next render reads the new one's.
++    let release;
++    hold = { promise: new Promise(r => { release = r; }) };
++    await b.evaluate('(()=>{document.querySelector("#bus-view h1").dataset.before="1";document.querySelector("#refresh").click();return true})()');
++    for (let i = 0; i < 100 && !held; i++) await new Promise(r => setTimeout(r, 50));
++    assert.equal(held, 1);
++    await send(other.id, 'Another?');
++    hold = null; release();
++    await wait('!document.querySelector("#bus-view h1")?.dataset.before && !document.querySelector("#bus-view [aria-busy]")');
++    assert.match(await text('#send-section .receipt'), new RegExp(`, message ${other.id.slice(0, 8)}\\. Its trail\\.$`));
++    assert.deepEqual(await items(), []);
++    assert.match(await text('#send-section'), new RegExp(NONE.replace(/\./g, '\\.')));
++    await refresh();
++    assert.deepEqual((await items()).map(i => i[1]), ['Another answer']);
++  } finally {
++    await b.close(); await close(web); await f.close(); store.close();
++    rmSync(root, { recursive: true, force: true });
++  }
++});

agents/dewey/work/queue-81/r2/candidate-manifest.sha256

@@ -0,0 +1,13 @@
+ccadda33cc22f9a680a8bfbf705ca598b46ee212e687ab98ce0ee80f5664c036  packages/bus/README.md
+4e532c9f53efda4db9dfff869746bcb99770c5ea956606637feb8d46f4ee31dd  packages/bus/src/broker.mjs
+c1258cc5bdb477ae855d918390e273f89d6ce82483b7017c69da2f943227290a  packages/bus/src/views.mjs
+75a3544afa840ef026140435d402a9a525b2677c74c5783cea240f4e6e22ab93  packages/bus/tests/replies.test.mjs
+c5cdd2b0e54779dd3002f7a23244f5619ac90c2cff2afd5684560c6aca737923  packages/cli/README.md
+fda4c7fccb79d815557aa531b8c2e4b28d32b29d980d5782899faae5737ec269  packages/cli/src/cli.mjs
+37139c916d32cb48e13dd42f2d351533112e010f496560f4740db974fd27fd1d  packages/cli/tests/verbs.test.mjs
+c4373bda9d659a81f9ba808ef3f96a64dd66c2d5ca148569f3d8415ca8630b0a  packages/webui/README.md
+1d665978080a68f945abcb27dadbf32919a3c173ab352cefbde352d2ad069142  packages/webui/src/bus.mjs
+8d3bbf3803c15274f8cc7f6107ce3cafaa23f77778696de06c8c9aec35a3025c  packages/webui/src/public/bus.js
+f2a3d62d3d818f10d72837b80141ca7b098532b1d614c1030ad7fff1eeac640b  packages/webui/src/serve.mjs
+f2b69e407c21295d737b25606bb1d65f6f363184bab458b9da5a129f1bb0b19f  packages/webui/tests/bus.test.mjs
+2c0ed3d134695fd754c77cd9540ddd551994703a9eef494f2fafd8ddf6507616  packages/webui/tests/send-browser.test.mjs

agents/dewey/work/queue-81/r2/gate-summary.txt

@@ -0,0 +1,36 @@
+2026-10-12T19:05:31Z
+== node bus
+ℹ tests 102
+ℹ pass 102
+ℹ fail 0
+node-bus rc=0
+== node webui
+ℹ tests 84
+ℹ pass 84
+ℹ fail 0
+node-webui rc=0
+== node control-board
+ℹ tests 124
+ℹ pass 124
+ℹ fail 0
+node-control-board rc=0
+== node cli
+ℹ tests 115
+ℹ pass 115
+ℹ fail 0
+node-cli rc=0
+== node tasks
+ℹ tests 74
+ℹ pass 74
+ℹ fail 0
+node-tasks rc=0
+test-auth rc=0
+test-conductor rc=0
+test-config rc=0
+test-discord rc=0
+test-extension-package rc=0
+test-foundation rc=0
+test-queue rc=0
+test-release rc=0
+test-task rc=0
+2026-10-12T19:10:13Z

agents/dewey/work/queue-81/r2/mutants.py

@@ -0,0 +1,38 @@
+# Row 81 mutants: each swaps one exact string in the candidate copy, runs the named tests,
+# restores the file, and reports killed (tests fail) or SURVIVED.
+import subprocess, sys, os
+M = os.path.expanduser('~/dewey-scratch/r81r2mut')
+env = dict(os.environ, TMPDIR=os.path.expanduser('~/dewey-scratch/tmp'))
+B, W, C = 'packages/bus/tests/replies.test.mjs', 'packages/webui/tests/bus.test.mjs', 'packages/cli/tests/verbs.test.mjs'
+SB = 'packages/webui/tests/send-browser.test.mjs'
+muts = [
+ ('broker: no human-required', 'packages/bus/src/broker.mjs', "      case 'replies': {\n        if (!s.human && !s.reader) fail('human-required');\n", "      case 'replies': {\n", [B]),
+ ('broker: no message-not-found', 'packages/bus/src/broker.mjs', "          fail('message-not-found');\n        return this.#store.all(\n          `SELECT * FROM messages WHERE business=? AND in_reply_to=?", "          (void 0);\n        return this.#store.all(\n          `SELECT * FROM messages WHERE business=? AND in_reply_to=?", [B]),
+ ('broker: newest first', 'packages/bus/src/broker.mjs', 'in_reply_to=? ORDER BY seq LIMIT', 'in_reply_to=? ORDER BY seq DESC LIMIT', [B]),
+ ('broker: cap 51', 'packages/bus/src/broker.mjs', 'LIMIT ${REPLIES}`', 'LIMIT ${REPLIES + 1}`', [B]),
+ ('broker: reader not allowed', 'packages/bus/src/broker.mjs', "'credentials', 'replies'", "'credentials'", [B]),
+ ('broker: no strict keys', 'packages/bus/src/broker.mjs', "        keys(a, ['id'], ['id']);\n        identifier(a.id);\n        if (!this.#store.get('SELECT id FROM messages", "        if (!this.#store.get('SELECT id FROM messages", [B]),
+ ('views: subject arg', 'packages/bus/src/views.mjs', "client.call('replies', { id })", "client.call('replies', { subject: id })", [B, W]),
+ ('serve: no id check', 'packages/webui/src/serve.mjs', "    if (!subjectOk(arg)) return json(res, 400, { error: 'invalid-request', message: 'id must be a message id' });\n", "", [W]),
+ ('serve: replies not a verb', 'packages/webui/src/serve.mjs', ", 'replies'", "", [W]),
+ ('page: query as subject', 'packages/webui/src/public/bus.js', "verb === 'replies' ? 'id' : 'subject'", "'subject'", [SB]),
+ ('page: no replies read', 'packages/webui/src/public/bus.js', "try { rows = await get('replies', r.id); } catch {}", "rows = [];", [SB]),
+ ('page: no reset on send', 'packages/webui/src/public/bus.js', "receipt = { kind: 'sent', to, id: body.id, at: body.at }; replies = [];", "receipt = { kind: 'sent', to, id: body.id, at: body.at };", [SB]),
+ ('page: no stale guard', 'packages/webui/src/public/bus.js', 'if (receipt === r) replies', 'if (true) replies', [SB]),
+ ('page: cap note off by one', 'packages/webui/src/public/bus.js', 'replies.length >= REPLIES ?', 'replies.length > REPLIES ?', [SB]),
+ ('page: body unescaped', 'packages/webui/src/public/bus.js', '<p class="s1-q">${txt(m.body)}</p>', '<p class="s1-q">${m.body}</p>', [SB]),
+ ('page: failure shown as none', 'packages/webui/src/public/bus.js', "if (receipt === r) replies = Array.isArray(rows) ? rows : null;", "if (receipt === r) replies = Array.isArray(rows) ? rows : [];", [SB]),
+ ('cli: old message', 'packages/cli/src/cli.mjs', 'and the next mosaic talk shows it`', 'and the next mosaic talk or mosaic inbox shows it`', [C]),
+]
+only = sys.argv[1:]
+for name, f, old, new, tests in muts:
+    if only and not any(o in name for o in only): continue
+    p = os.path.join(M, f); src = open(p).read()
+    n = src.count(old)
+    if n != 1: print(f'BAD-ANCHOR ({n}) {name}', flush=True); continue
+    open(p, 'w').write(src.replace(old, new))
+    try:
+        r = subprocess.run(['node', '--test', *tests], cwd=M, env=env, capture_output=True, text=True, timeout=600)
+    finally:
+        open(p, 'w').write(src)
+    print(('killed  ' if r.returncode else 'SURVIVED') + f'  {name}', flush=True)

agents/dewey/work/queue-81/r2/mutants.txt

@@ -0,0 +1,17 @@
+killed    broker: no human-required
+killed    broker: no message-not-found
+killed    broker: newest first
+killed    broker: cap 51
+killed    broker: reader not allowed
+killed    broker: no strict keys
+killed    views: subject arg
+killed    serve: no id check
+killed    serve: replies not a verb
+killed    page: query as subject
+killed    page: no replies read
+killed    page: no reset on send
+killed    page: no stale guard
+killed    page: cap note off by one
+killed    page: body unescaped
+killed    page: failure shown as none
+killed    cli: old message