Tooltip subtlety round: 500ms rest delay, quiet chip, parens suffixes, drops + trims

Owner round 2026-09-25, over 09c0f6e. The wave's tooltips read as
distracting; this round makes them quiet:

- Delay: TOOLTIP_DELAY_MS = 500 in the primitive — tooltips appear when
  you pause on a control, never in passing (Radix focus-opens stay
  instant by design; keyboard users don't wait).
- Vanish on leave: disableHoverableContent — the chip is un-hoverable,
  so the instant the cursor leaves the trigger it's gone, even mid-move
  onto the chip's own pixels.
- Look: bg-accent (#2a2a2a, the hover-chip tone) instead of the white
  bg-foreground slab; 11px; px-2 py-1; arrow culled (nothing purely
  decorative); text-foreground/85.
- Suffix: parentheses, not em-dash — "Dictate (⌘D)"; the registry
  source unchanged (still override-aware).
- Drops (owner-selected): send square, start square, stats summary —
  the icons/numbers describe themselves.
- Home logo kept but to the RIGHT with its real shortcut "Home (⌘G)"
  (jump-graph routes to /, the same destination).
- Trims: "Model selector (⌘K)", "Thinking level", "Graph costs —
  click for details", "How much of this session isn't mapped yet".
- Added: Import Notes gets "Import notes into the graph" — the one
  button whose destination wasn't obvious.

Pins: TOOLTIP_DELAY_MS=500; hintText parens expectations updated.
Live-verified on :3001 — 508ms hover delay measured, close within 10ms
of pointerout, chip styles probed (rgb(42,42,42), 11px, 4px/8px), arrow
gone, all new labels + sides confirmed, drops carry no tooltip and no
aria-describedby.

tests/tooltip-mechanism.test.tsx

@@ -17,18 +17,19 @@ import { describe, it } from "node:test";
 import { createElement } from "react";
 import { renderToStaticMarkup } from "react-dom/server";
 import { Hint, hintText } from "../components/ui/hint.tsx";
+import { TOOLTIP_DELAY_MS } from "../components/ui/tooltip.tsx";
 import { AUTO_UPDATE_HINT } from "../components/settings/settings-dialog.tsx";
 
-describe("hintText — the em-dash composition", () => {
+describe("hintText — the parenthesized composition", () => {
 	it("a registry action appends the LIVE binding (override-aware source)", () => {
-		assert.equal(hintText("Dictate", "toggle-dictation"), "Dictate — ⌘D");
-		assert.equal(hintText("Settings", "open-settings"), "Settings — ⌘,");
-		assert.equal(hintText("Search sessions", "sessions-search"), "Search sessions — ⌘⇧F");
+		assert.equal(hintText("Dictate", "toggle-dictation"), "Dictate (⌘D)");
+		assert.equal(hintText("Settings", "open-settings"), "Settings (⌘,)");
+		assert.equal(hintText("Search sessions", "sessions-search"), "Search sessions (⌘⇧F)");
 	});
 
 	it("surface-owned keys ride the binding prop (no registry entry)", () => {
-		assert.equal(hintText("Close", undefined, "escape"), "Close — Esc");
-		assert.equal(hintText("Send", undefined, "enter"), "Send — ↵");
+		assert.equal(hintText("Close", undefined, "escape"), "Close (Esc)");
+		assert.equal(hintText("Send", undefined, "enter"), "Send (↵)");
 	});
 
 	it("no shortcut = the label alone, no dangling dash", () => {
@@ -37,6 +38,12 @@ describe("hintText — the em-dash composition", () => {
 	});
 });
 
+describe("subtlety round pins (owner 2026-09-25)", () => {
+	it("the rest delay is 500ms — tooltips appear on pause, never in passing", () => {
+		assert.equal(TOOLTIP_DELAY_MS, 500);
+	});
+});
+
 describe("spot-pins: the dev-speak cull (owner copy review at merge)", () => {
 	it("the auto-update hint is honest user language — no stream jargon", () => {
 		assert.equal(AUTO_UPDATE_HINT, "Automatic updates arrive in an upcoming release");