feat(board): session attention, Discord rows, task attribution and relaunch activity (rows 18, 22, #1511, #1512)

One cumulative control-board, webui and seat state. The four rows edit the
same files (scan.mjs, page.html, README.md, app.js), so they land together,
each on its own receipt:

- Row 18, Discord connector rows on the board (#1509): R3 approved by
  Darkwing and Dewey, Gitea comment 26257, manifest 254403b8. Jason
  accepted the visual test.
- Row 22, board attention status (#1503): Filbert approved R1, comment
  26248, manifest e40b58ec; restart receipt 26249.
- #1511, task attribution (row 6 code phase): R2 approved by Filbert and
  Dewey, manifest d4c96395. docs/TOOLS.md carries the approved --by usage
  line (tools-usage.patch 86bcba3c).
- #1512, relaunch activity (row 6 pilot): R1 approved by Darkwing and
  Dewey, candidate manifest 47769fad. All seven source files match it.

Row 16, internal development bootstrap (#1510): the seven files outside
shared records match Filbert's R1 pins, receipt 26204 (agents/researcher/*,
scripts/test-darkwing-launch.mjs, the bootstrap plan).

packages/webui/src/public/app.js is committed at its #1512 R1 pin ce7d79a4.
The working copy holds Dewey's unreviewed return-flow candidate on top of
that, and it stays uncommitted.

Also: the four row briefs and Darkwing's evidence records under
agents/darkwing/work, including the 2026-09-26 tree manifest and the #1512
re-run against 21e3e908. Serial acceptance command: 397/397, three runs.
The failures that only show when tests run concurrently are in #1509 engine
tests, and they reproduce on clean HEAD.

Suites on the exact staged tree: config 24, task 90, foundation 43,
conductor 17, release 14, auth 15, discord 63; package union 397/397
(serial); test-darkwing-launch 5/5.

Shared records (BUILD-LOG, QUEUE, CURRENT, DEFERRED, SESSIONS, AGENTS.md,
agents/README.md) follow in Sage's records commit.

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

packages/webui/tests/browser.test.mjs

@@ -34,6 +34,19 @@ test('served Console browser: real board fixtures, keyboard, drafts, receipts, t
     assert.equal(await b.evaluate('document.activeElement.id'), 'inspector-title');
     assert.equal(await b.evaluate('document.querySelector("#inspector").hidden'), false);
     assert.match(await b.evaluate('document.querySelector("#inspection").textContent'), /Registered fixture task/);
+    // #1511: attribution shows for the registered task only, as a claim, and only where the task is the registered one.
+    assert.match(await b.evaluate('document.querySelector("#inspection").textContent'), /Task set by\s*fixture-setter \(as claimed by the caller, not verified\)/);
+    assert.match(await b.evaluate('document.querySelector("table.sessions tr[data-row=\\"proj/agent1\\"] td.task").textContent'), /set by fixture-setter/);
+    assert.equal(await b.evaluate('[...document.querySelectorAll("table.sessions td.task")].filter(td=>td.textContent.includes("set by")).length'), 1, 'transcript-derived rows carry no attribution');
+    assert.match(await b.evaluate('document.querySelector("#waiting .wait-item p:nth-of-type(2)").textContent'), /set by fixture-setter|Build the fixture task/);
+    // R1-U1: a transcript-derived task is "not applicable", never "unknown", and never borrows the registered setter.
+    await b.evaluate('[...document.querySelectorAll("table.sessions [data-open]")].find(e=>e.dataset.open!=="proj/agent1").focus()'); await b.key('Enter');
+    await wait('!document.querySelector("#inspection").textContent.includes("Registered fixture task")');
+    assert.match(await b.evaluate('document.querySelector("#inspection").textContent'), /Task set by\s*not applicable \(task is not from a registration\)/);
+    assert.equal(await b.evaluate('document.querySelector("#inspection").textContent.includes("fixture-setter")'), false);
+    assert.doesNotMatch(await b.evaluate('document.querySelector("#inspection").textContent'), /Task set by\s*unknown/);
+    await b.evaluate('[...document.querySelectorAll("table.sessions [data-open]")].find(e=>e.dataset.open==="proj/agent1").focus()'); await b.key('Enter');
+    await wait('document.querySelector("#inspection").textContent.includes("Registered fixture task")');
     assert.equal(await b.evaluate('!!window.injected'), false);
     await b.evaluate('document.querySelector("#reply").focus()');
     await b.call('Input.insertText', { text: 'keep this draft' });