Address action-demanding transitions to the assignee; neutral verdict label

Send-back/unblock/cancel by someone else now land in the worker's queue (only cancel did — send-backs woke nobody); done stays unaddressed.
The Request changes button drops the send-to-X phrasing — it's a board write, delivery is the queue's job.

surfaces/gui/e2e/board.spec.ts

@@ -111,7 +111,7 @@ test("item detail: timeline with attachment, worker link, request changes", asyn
   // Request changes… discloses a comment box; sending returns the item to work
   await detail.getByRole("button", { name: "Request changes…" }).click();
   await detail.getByPlaceholder("What needs to change?").fill("totals drift on Tom");
-  await detail.getByRole("button", { name: "Send to security" }).click();
+  await detail.getByRole("button", { name: "Request changes", exact: true }).click();
   await expect(detail).toContainText("In progress");
   // switching rows switches the pane
   await page.getByTestId("board-item-3").click();

surfaces/gui/src/components/BoardPanel.tsx

@@ -358,6 +358,8 @@ function DetailActions({
               onChange={(e) => setChangesText(e.target.value)}
             />
             <div className="board-changes-row">
+              {/* A board write, not a message: review → in_progress with the
+                  comment attached; delivery to the assignee is the queue's job. */}
               <button
                 className="board-btn primary"
                 disabled={!changesText.trim()}
@@ -365,7 +367,7 @@ function DetailActions({
                   onTransition(detail.id, "in_progress", changesText.trim())
                 }
               >
-                Send to {detail.assignee || "worker"}
+                Request changes
               </button>
               <button className="board-btn ghost" onClick={() => setChangesOpen(false)}>
                 Cancel