Production tooltips: styled tooltips everywhere, shortcuts surfaced, dev-speak culled

Owner-approved full pass (tooltip wave, 2026-09-25). Mechanism: icon/pill
controls ride the styled Radix tooltip via a new Hint composition
(components/ui/hint.tsx) — the shared primitive adopted as-is, no
restyling; the shortcut appends as an em-dash suffix off the LIVE registry
(a rebind in Settings → Keyboard changes the suffix): "Dictate — ⌘D".
Surface-owned keys (Esc closes, Enter submits) ride a raw binding prop.
Native title= stays only for truncation-reveals (dock spans, the rename
field) and menu-interior abbreviations (MenuShell untouched). One
em-dash pattern; per-state truth on the send square (busy = "Stop the
reply — Esc", idle = "Send — ↵"), Enter on the plan verdict's accept,
"Stop dictation (Esc)" kept verbatim per the owner's flag.

Copy: the dev-speak cull — no pipeline/prober/tier/wave vocabulary
anywhere a user reads. New pins in tests/tooltip-mechanism.test.tsx
(hintText composition, asChild no-wrapper-DOM, the auto-update hint
constant); dock truncation titles pinned native; graph-chrome + settings
pins updated to the new copy.

Live-verified on :3001 — 12.6ms hover appearance (no native 1s lag);
glyphs render on every suffixed surface (⌘D, ⌘K, ⌘⇧F, ⌘,, ⌘B, F2, ↵,
Esc); per-page probes confirm Settings entry, Home logo, session search,
Start session, Close sidebar, model + thinking pills, stats summary,
rename title, plan chip, coverage ring, send square, cost button, node
search (⌘F), graph gear, settings close (Close — Esc), keyboard section
"Fixed — part of this screen", auto-update hint, light-mode "Coming
soon", the three slot rosters, graph-tools hint. Esc still closes the
settings dialog.

components/settings/settings-dialog.tsx

@@ -44,6 +44,7 @@ import type { ModelsSettings } from "@/src/core";
 import { MENU_CLOSE_EVENT, MENU_OPEN_EVENT } from "@/components/menu-shell";
 import { notifySettingsSaved } from "@/components/settings-signal";
 import { KeysSection } from "./keys-section.tsx";
+import { Hint } from "@/components/ui/hint";
 import { AppearanceSection, GraphSection } from "./appearance-section.tsx";
 import { KeyboardSection } from "./keyboard-section.tsx";
 
@@ -70,6 +71,10 @@ const DialogContext = createContext<{ open: (section?: string, row?: string) =>
 /** AppShell-level mount: the sidebar row and the mod+, chord call this.
  *  `open(section)` lands the dialog on a specific section (the first-run
  *  setup flow deep-links to Keys when no provider key exists yet). */
+/** The auto-update row's hint (tooltip wave): honest user language — no
+ *  stream vocabulary. Exported for the copy pin (tooltip-mechanism test). */
+export const AUTO_UPDATE_HINT = "Automatic updates arrive in an upcoming release";
+
 export function SettingsDialogProvider({
 	children,
 }: {
@@ -258,7 +263,13 @@ export function SettingsDialogBody({
 			{/* Header — the app's quiet CMU title language. */}
 			<header className="flex h-15 shrink-0 items-center gap-3 border-b border-border px-5">
 				<h2 className="font-title text-2xl tracking-tight">Settings</h2>
-				<button
+				<Hint
+						// Esc closes the dialog (its own listener) — surface it.
+						label="Close"
+						binding="escape"
+						side="left"
+					>
+						<button
 					type="button"
 					aria-label="Close settings"
 					data-testid="settings-close"
@@ -275,6 +286,7 @@ export function SettingsDialogBody({
 						<path d="M4 4l8 8M12 4l-8 8" />
 					</svg>
 				</button>
+					</Hint>
 			</header>
 
 			<div className="flex min-h-0 flex-1">
@@ -340,7 +352,7 @@ export function SettingsDialogBody({
 								>
 									<SettingsRow
 										label="Auto-update"
-										hint="The update mechanism ships in a later wave"
+										hint={AUTO_UPDATE_HINT}
 										testid="row-auto-update"
 									>
 										<Toggle