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/agent-section.tsx

@@ -62,9 +62,9 @@ import { ModelMenuList, ThinkingMenuList } from "./model-menu";
 /** One slot's display identity — the tier's roster as the row hint rides
  *  with the resolved default (owner: the hint ALWAYS names the default). */
 const SLOT_META: Record<ModelSlotName, { label: string; roster: string }> = {
-	strong: { label: "Strong", roster: "Prober + Teacher" },
-	cheap: { label: "Cheap", roster: "Researcher, demo builder, extractor, auditor" },
-	vision: { label: "Vision", roster: "Visual maker + PDF reader" },
+	strong: { label: "Strong", roster: "The main model for your sessions" },
+	cheap: { label: "Cheap", roster: "The assistants that research, build demos, and grade your work" },
+	vision: { label: "Vision", roster: "The assistants that draw and read PDFs" },
 };
 
 /** The search engines this wave ships (src/core/search.ts) + their labels. */
@@ -403,7 +403,7 @@ export function AgentSection({
 			<div key={info.path} data-testid={`prompt-segment-${info.path}`}>
 				<SettingsRow
 					label={info.path}
-					hint={fileExists ? undefined : "no override file yet — write one below"}
+					hint={fileExists ? undefined : "No changes yet — add yours below"}
 					testid={`prompt-row-${info.path}`}
 					dimmed={!fileExists}
 				>
@@ -434,7 +434,7 @@ export function AgentSection({
 							<textarea
 								readOnly
 								value={info.sourceText}
-								aria-label={`source ${info.path}`}
+								aria-label="The original instructions"
 								className="h-24 w-full resize-y rounded-sm border border-border bg-muted p-2 font-ui text-xs text-muted-foreground"
 							/>
 						</div>
@@ -443,8 +443,8 @@ export function AgentSection({
 							<textarea
 								value={segmentDraft[info.path] ?? info.overrideText ?? ""}
 								onChange={(e) => setSegmentDraft({ ...segmentDraft, [info.path]: e.target.value })}
-								aria-label={`override ${info.path}`}
-								placeholder="Write the override text…"
+								aria-label="Your version of the instructions"
+								placeholder="Add your own instructions…"
 								className="h-24 w-full resize-y rounded-sm border border-border bg-background p-2 font-ui text-xs text-foreground outline-none"
 							/>
 						</div>
@@ -454,7 +454,7 @@ export function AgentSection({
 								onClick={() => void saveSegment(info.path, segmentDraft[info.path] ?? "")}
 								className="text-xs text-foreground underline-offset-2 hover:underline"
 							>
-								Save override
+								Save
 							</button>
 							{fileExists && (
 								<button
@@ -462,7 +462,7 @@ export function AgentSection({
 									onClick={() => void deleteSegment(info.path)}
 									className="text-xs text-muted-foreground/70 underline-offset-2 hover:text-red-500 hover:underline"
 								>
-									Delete override
+									Delete
 								</button>
 							)}
 						</div>
@@ -597,7 +597,7 @@ export function AgentSection({
 					return (
 						<SettingsRow
 							label="Graph tools"
-							hint={graphOn ? "Connects prior sessions' knowledge into new ones — the prober reads the knowledge map" : "Graph is disabled"}
+							hint={graphOn ? "Lets the tutor consult your knowledge map between sessions" : "Graph is disabled"}
 							testid="graph-tools-row"
 							dimmed={!graphOn}
 						>