fix(web): quiet structured transcript metadata

web/src/structured.test.ts

@@ -115,6 +115,42 @@ describe("structured connection: data flow", () => {
     conn.dispose();
   });
 
+  it("shows turn details only while that footer is the conversation's final item", () => {
+    const ws = new FakeSocket();
+    const conn = mount({ sockets: [ws] });
+    const turnMeta = (id: string, elapsedMs: number) =>
+      row(id, "notice", {
+        maestroTurnMeta: { elapsedMs, contextTokens: 12_000, outcome: "completed", model: "codex" },
+      });
+    ws.open();
+    ws.emit({
+      type: "transcript_snapshot",
+      snapshot: {
+        cursor: 4,
+        rows: [
+          row("user:1", "user", { content: { type: "text", text: "first" } }),
+          turnMeta("turn:1", 1_000),
+          row("user:2", "user", { content: { type: "text", text: "second" } }),
+          turnMeta("turn:2", 2_000),
+        ],
+      },
+    });
+
+    expect(conn.el.querySelectorAll(".st-turn-meta")).toHaveLength(1);
+    expect(conn.el.querySelector(".st-turn-meta")?.textContent).toContain("2s");
+
+    ws.emit({
+      type: "projection_update",
+      transcript: {
+        type: "append",
+        row: row("user:3", "user", { content: { type: "text", text: "third" } }),
+      },
+      state: idleState,
+    });
+    expect(conn.el.querySelector(".st-turn-meta")).toBeNull();
+    conn.dispose();
+  });
+
   it("keeps state-only plan rows out of the transcript", () => {
     const ws = new FakeSocket();
     const conn = mount({ sockets: [ws] });

web/src/structured.ts

@@ -340,7 +340,14 @@ export function createStructuredConnection(
       rowEls.set(row.id, rowEl);
       children.push(rowEl);
     }
-    rowsEl.replaceChildren(...children);
+    // A completed turn's footer is useful as the conversation's current
+    // tail, but repeating duration/model/token summaries throughout history
+    // makes them read like transcript content. Keep only a footer that is the
+    // final visible item; appending the next turn naturally retires it.
+    const visibleChildren = children.filter(
+      (child, index) => !child.classList.contains("st-turn-meta") || index === children.length - 1,
+    );
+    rowsEl.replaceChildren(...visibleChildren);
     if (restoreToolFocus && focusedRowId) {
       rowEls.get(focusedRowId)?.querySelector<HTMLButtonElement>(".st-tool-head")?.focus();
     } else if (restoreGroupFocus && focusedGroupId) {

web/src/styles.css

@@ -2549,19 +2549,27 @@ input.leaf-rename:focus {
   transition: opacity var(--dur-fast) var(--ease-out);
 }
 
-.st-copyable:hover,
 .st-copyable:focus-visible {
   background: var(--surface-2);
   outline: none;
 }
 
-.st-copyable:hover::after,
 .st-copyable:focus-visible::after,
 .st-copyable[data-copy-state="copied"]::after,
 .st-copyable[data-copy-state="error"]::after {
   opacity: 1;
 }
 
+@media (hover: hover) {
+  .st-copyable:hover {
+    background: var(--surface-2);
+  }
+
+  .st-copyable:hover::after {
+    opacity: 1;
+  }
+}
+
 .st-copyable[data-copy-state="copied"]::after {
   content: "copied";
   color: var(--live);
@@ -3126,12 +3134,6 @@ input.leaf-rename:focus {
   }
 }
 
-@media (hover: none) {
-  .st-copyable::after {
-    opacity: 0.7;
-  }
-}
-
 /* ---------- modal ---------- */
 
 .modal-backdrop {