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.

components/stats-bar.tsx

@@ -4,7 +4,6 @@ import { useEffect, useMemo, useRef, useState, type ReactNode } from "react";
 import { contextWindow, sessionCost, turnCost, type ChatSettings, type TurnUsage } from "@/src/core";
 import { formatTokens, formatUsd, prettyModel } from "@/components/usage-format";
 import { ModelControl, catalogLimits, useModelCatalog } from "@/components/model-picker";
-import { Hint } from "@/components/ui/hint";
 
 /**
  * The below-composer stats bar (wave 4 observability): the session's
@@ -93,26 +92,21 @@ export function StatsBar({
 			    exists (turns). Pre-chat renders nothing (see the header). */}
 			{turns.length > 0 && (
 			<div ref={barRef} className="relative">
-				<Hint
-						// Copy kept (the scout approved) — machinery moved to the
-						// styled tooltip (tooltip wave).
-						label="Session stats — per-turn detail"
-						side="bottom"
-					>
-						<button
-					type="button"
-					onClick={() => setOpen((o) => !o)}
-					aria-expanded={open}
-					data-testid="stats-summary"
-					className="flex items-center gap-1.5 tabular-nums transition-colors hover:text-foreground"
-				>
-					<span data-testid="stats-context">
-						{ctx ? (ctx.limit !== null ? `${formatTokens(ctx.usedTokens)} / ${formatTokens(ctx.limit)}` : formatTokens(ctx.usedTokens)) : "—"}
-					</span>
-					<span aria-hidden>·</span>
-					<span data-testid="stats-cost">{costLabel}</span>
-				</button>
-					</Hint>
+				{/* No tooltip — the numbers describe themselves and the popover
+			    speaks on click (owner, subtlety round 2026-09-25). */}
+			<button
+				type="button"
+				onClick={() => setOpen((o) => !o)}
+				aria-expanded={open}
+				data-testid="stats-summary"
+				className="flex items-center gap-1.5 tabular-nums transition-colors hover:text-foreground"
+			>
+				<span data-testid="stats-context">
+					{ctx ? (ctx.limit !== null ? `${formatTokens(ctx.usedTokens)} / ${formatTokens(ctx.limit)}` : formatTokens(ctx.usedTokens)) : "—"}
+				</span>
+				<span aria-hidden>·</span>
+				<span data-testid="stats-cost">{costLabel}</span>
+			</button>
 				{open && (
 					<div
 						data-testid="stats-detail"