build: bump version to 0.0.16

admin: overview redesign, device scope, one formatting contract (milestone 39)
The Overview page takes the decided visual language (specs/ui-visual-redesign.md): four centred totals with their Activity links, a smoothed area chart of total and blocked queries with point hover and a tooltip beside the point, a stacked client chart in eight distinct hues plus one Other band, and a card row with the cache hit rate, the query types as a single-hue ramp ring, and the upstream breakdown. GET /api/overview takes a client parameter; the scoped read uses idx_query_log_ts and the cache keeps scoped slots. The device selector beside the period selector is URL state, so a scoped view is a link, and the tile links carry the scope into Activity. All numbers go through admin/src/lib/format.ts: grouped counts, two-decimal percentages, one-decimal rates, durations as the two largest nonzero units. A sweep test refuses toFixed, toLocaleString, Intl.NumberFormat and padStart anywhere else. Chrome: one 4px radius from the metrics constants, shared Card with a prominent title and description, the sidebar grouped into Monitoring and System with a status block (protection, queries per minute on Overview, uptime), and the accent darkened to 5.43:1 on its wash. Not built: the spec's ranked-list primitive, which has no consumer and no API rows. Codex could not review sessions B to D, its endpoint returned 404 for every call on 2026-09-03; the owner accepted the smoke-server screenshots.
2026-09-03 17:17:03 +02:00 · 2026-09-03 17:16:24 +02:00
46 changed files with 216 additions and 602 deletions
@@ -4,7 +4,7 @@ All notable changes to nxdns are recorded here. The format follows [Keep a Chang

 Sections are written by hand. Nothing here is generated from commit messages: the point of the file is to say what changed for an operator, which a commit subject rarely does.

-## [0.0.16] - 2026-09-07
+## [0.0.16] - 2026-09-03

 The Overview page is redesigned around the two dashboards people already know — Pi-hole's layout, NextDNS's charts — and every number in the admin is spelled one way.

@@ -5,7 +5,6 @@ import { ApiError } from "@/lib/api";
 import { useAuth } from "@/auth/store";
 import { styles as shared } from "@/ui/styles";
 import { colors } from "@/ui/tokens.stylex";
-import { formatDuration } from "@/lib/format";

 const styles = stylex.create({
 	/** Login renders outside AppShell, so it paints the page ground itself. */
@@ -66,7 +65,7 @@ function errorMessage(error: unknown, remaining: number | null): string {
 		if (error.status === 401) return "Incorrect password.";
 		if (error.status === 429) {
 			return remaining !== null && remaining > 0
-				? `Too many attempts. Try again in ${formatDuration(remaining)}.`
+				? `Too many attempts. Try again in ${remaining}s.`
 				: "Too many attempts. Try again shortly.";
 		}
 		if (error.status === 503) return "The server is starting or degraded. Try again shortly.";
@@ -29,7 +29,6 @@ import { useEffect, useMemo, useRef } from "react";
 import * as stylex from "@stylexjs/stylex";
 import { Button, Menu, MenuItem, MenuTrigger, Popover } from "react-aria-components";
 import { clientLabel, useClientNames } from "@/features/clients/clientNames";
-import { formatCount } from "@/lib/format";
 import { styles as shared } from "@/ui/styles";
 import { colors, metrics } from "@/ui/tokens.stylex";
 import { MAX_CLIENTS } from "./search";
@@ -221,7 +220,7 @@ export function joinClients(ips: readonly string[]): string | undefined {
 function triggerLabel(selected: readonly string[], options: readonly ClientOption[]): string {
 	if (selected.length === 0) return "Clients";
 	if (selected.length === 1) return displayFor(selected[0] as string, options);
-	return `${formatCount(selected.length)} clients`;
+	return `${selected.length} clients`;
 }

 interface Props {
@@ -374,7 +373,7 @@ export default function ClientFilter({ options, selected, onChange }: Props) {
 				</button>
 			))}
 			{selected.length > MAX_CHIPS && (
-				<span {...stylex.props(styles.chipMore)}>+{formatCount(selected.length - MAX_CHIPS)} more</span>
+				<span {...stylex.props(styles.chipMore)}>+{selected.length - MAX_CHIPS} more</span>
 			)}
 		</div>
 	);
@@ -12,7 +12,6 @@ import * as stylex from "@stylexjs/stylex";
 import * as api from "@/lib/api";
 import CoverageNotice from "@/lib/CoverageNotice";
 import InlineError from "@/lib/InlineError";
-import { formatCount } from "@/lib/format";
 import { queriesInfiniteQuery } from "@/lib/queries";
 import type { QueryRow } from "@/lib/types";
 import { useClientNames } from "@/features/clients/clientNames";
@@ -153,7 +152,7 @@ export default function HistoryActivity({ search, onClear }: Props) {
 				</div>
 			) : (
 				<>
-					<div tabIndex={0} {...stylex.props(styles.tableWrap, shared.focusRing)}>
+					<div {...stylex.props(styles.tableWrap)}>
 						<table {...stylex.props(styles.table)}>
 							<ActivityTableHead />
 							<tbody>
@@ -185,7 +184,7 @@ export default function HistoryActivity({ search, onClear }: Props) {
 					<div {...stylex.props(styles.footer)}>
 						<p {...stylex.props(styles.note)}>
 							{/* The count is the one part of this line that moves as pages load. */}
-							Showing <span {...stylex.props(shared.tabularNums)}>{formatCount(rows.length)}</span>{" "}
+							Showing <span {...stylex.props(shared.tabularNums)}>{rows.length}</span>{" "}
 							{rows.length === 1 ? "query" : "queries"}
 							{hasMore ? "" : " — end of log"}
 						</p>
@@ -16,7 +16,6 @@ import { useEffect, useRef, useState } from "react";
 import { Link } from "@tanstack/react-router";
 import * as stylex from "@stylexjs/stylex";
 import { useClientNames } from "@/features/clients/clientNames";
-import { formatCount } from "@/lib/format";
 import { summarizeEvent } from "@/features/provenance/querySummary";
 import Dialog from "@/ui/Dialog";
 import { styles as shared } from "@/ui/styles";
@@ -288,8 +287,7 @@ export default function LiveActivity({

 			{live.frozen && (
 				<p {...stylex.props(styles.note)} role="status">
-					Display frozen — new queries keep buffering ({formatCount(live.liveCount)} in buffer, newest{" "}
-					{formatCount(capacity)} kept).
+					Display frozen — new queries keep buffering ({live.liveCount} in buffer, newest {capacity} kept).
 				</p>
 			)}

@@ -297,10 +295,7 @@ export default function LiveActivity({
 				<div role="status" {...stylex.props(styles.resumed)}>
 					<span>
 						Stream resumed —{" "}
-						{live.missed === 0
-							? "no queries missed"
-							: `${formatCount(live.missed)} missed queries recovered`}
-						.
+						{live.missed === 0 ? "no queries missed" : `${live.missed} missed queries recovered`}.
 					</span>
 					<button
 						type="button"
@@ -351,7 +346,7 @@ export default function LiveActivity({
 					)
 				) : (
 					<>
-						<div tabIndex={0} {...stylex.props(styles.tableWrap, shared.focusRing)}>
+						<div {...stylex.props(styles.tableWrap)}>
 							<table {...stylex.props(styles.table)}>
 								<ActivityTableHead />
 								<tbody>
@@ -398,8 +393,8 @@ export default function LiveActivity({
 							</table>
 						</div>
 						<p {...stylex.props(styles.footnote)}>
-							Showing {formatCount(live.rows.length)} {live.rows.length === 1 ? "query" : "queries"}{" "}
-							(newest first, last {formatCount(capacity)} kept).
+							Showing {live.rows.length} {live.rows.length === 1 ? "query" : "queries"} (newest first,
+							last {capacity} kept).
 						</p>
 					</>
 				)}
@@ -9,7 +9,6 @@ import { defaultGroupId } from "@/lib/defaultGroup";
 import Select from "@/ui/Select";
 import { styles as shared } from "@/ui/styles";
 import { colors, metrics } from "@/ui/tokens.stylex";
-import { formatDuration } from "@/lib/format";

 const DARK = "@media (prefers-color-scheme: dark)";

@@ -179,7 +178,7 @@ function errorMessage(error: unknown): string {
 		}
 		if (error.status === 429) {
 			return error.retryAfter !== undefined
-				? `Rate limited. Try again in ${formatDuration(error.retryAfter)}.`
+				? `Rate limited. Try again in ${error.retryAfter}s.`
 				: "Rate limited. Try again shortly.";
 		}
 		return error.message;
@@ -7,9 +7,8 @@ import InlineError from "@/lib/InlineError";
 import { formatTime } from "@/lib/format";
 import { clientsQuery } from "@/lib/queries";
 import { useAuthority } from "@/features/configuration/authority";
-import Card from "@/ui/Card";
 import { styles as shared } from "@/ui/styles";
-import { colors } from "@/ui/tokens.stylex";
+import { colors, metrics } from "@/ui/tokens.stylex";
 import { ClientDisplayName, provenanceOf } from "./clientIdentity";

 /** The Activity window this page offers: the last day, in seconds. */
@@ -44,6 +43,12 @@ const styles = stylex.create({
 	panel: {
 		marginTop: "1rem",
 		maxWidth: "48rem",
+		borderRadius: metrics.radius,
+		borderWidth: 1,
+		borderStyle: "solid",
+		borderColor: colors.border,
+		backgroundColor: colors.surfaceRaised,
+		padding: metrics.cardPadding,
 	},
 	facts: {
 		display: "grid",
@@ -177,11 +182,7 @@ export default function ClientDetailPage() {
 			</h1>
 			<p {...stylex.props(styles.address, shared.mono)}>{client.ip}</p>

-			<Card
-				title="Details"
-				description="The name nxdns shows for this device, where that name came from, and when the device was last seen."
-				style={styles.panel}
-			>
+			<div {...stylex.props(styles.panel)}>
 				<dl {...stylex.props(styles.facts)}>
 					<dt {...stylex.props(styles.term)}>Name</dt>
 					<dd {...stylex.props(styles.value)}>
@@ -197,7 +198,7 @@ export default function ClientDetailPage() {
 					<dt {...stylex.props(styles.term)}>Last seen</dt>
 					<dd {...stylex.props(styles.value)}>{formatTime(client.last_seen)}</dd>
 				</dl>
-			</Card>
+			</div>

 			<h2 {...stylex.props(styles.sectionHeading)}>Policy</h2>
 			<p {...stylex.props(styles.prose)}>
@@ -185,7 +185,7 @@ export default function ClientsPage() {
 			) : rows.length === 0 ? (
 				<p {...stylex.props(styles.empty)}>No clients match this filter.</p>
 			) : (
-				<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+				<div {...stylex.props(shared.tableWrap)}>
 					<table {...stylex.props(styles.table)}>
 						<thead>
 							<tr {...stylex.props(styles.headRow)}>
@@ -4,7 +4,6 @@ import * as stylex from "@stylexjs/stylex";
 import { clientPrefixesPutMutation } from "@/lib/queries";
 import type { ClientPrefix, Group } from "@/lib/types";
 import { defaultGroupId } from "@/lib/defaultGroup";
-import { formatCount } from "@/lib/format";
 import {
 	firstProblem,
 	initPrefixEditor,
@@ -143,7 +142,7 @@ export default function NetworkAssignments({ prefixes, groups }: Props) {
 function AssignmentsTable({ prefixes }: { prefixes: ClientPrefix[] }) {
 	if (prefixes.length === 0) return <p {...stylex.props(styles.empty)}>The file declares no network assignments.</p>;
 	return (
-		<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+		<div {...stylex.props(shared.tableWrap)}>
 			<table {...stylex.props(styles.table)}>
 				<thead>
 					<tr>
@@ -211,7 +210,7 @@ function AssignmentsEditor({ prefixes, groups }: Props) {
 						<li key={index} {...stylex.props(styles.row)}>
 							<input
 								type="text"
-								aria-label={`Range ${formatCount(index + 1)}`}
+								aria-label={`Range ${index + 1}`}
 								aria-invalid={invalid(index, "prefix")}
 								aria-describedby={invalid(index, "prefix") && VALIDATION_ID}
 								placeholder="192.168.1.0/24"
@@ -222,7 +221,7 @@ function AssignmentsEditor({ prefixes, groups }: Props) {
 								{...stylex.props(shared.smallInput, styles.prefixInput, shared.focusRing)}
 							/>
 							<Select
-								aria-label={`Group for range ${formatCount(index + 1)}`}
+								aria-label={`Group for range ${index + 1}`}
 								variant="inline"
 								value={String(row.group_id)}
 								onChange={(value) =>
@@ -233,7 +232,7 @@ function AssignmentsEditor({ prefixes, groups }: Props) {
 							<input
 								type="text"
 								inputMode="numeric"
-								aria-label={`Priority for range ${formatCount(index + 1)}`}
+								aria-label={`Priority for range ${index + 1}`}
 								aria-invalid={invalid(index, "priority")}
 								aria-describedby={invalid(index, "priority") && VALIDATION_ID}
 								placeholder="100"
@@ -1,4 +1,3 @@
-import { formatCount } from "@/lib/format";
 import type { ClientPrefix, ClientPrefixInput } from "@/lib/types";

 export interface PrefixRow {
@@ -66,14 +65,10 @@ export interface PrefixProblem {
 export function firstProblem(rows: PrefixRow[]): PrefixProblem | null {
 	for (const [index, row] of rows.entries()) {
 		if (row.prefix.trim() === "")
-			return { index, field: "prefix", message: `Row ${formatCount(index + 1)}: prefix is required.` };
+			return { index, field: "prefix", message: `Row ${index + 1}: prefix is required.` };
 		const priority = row.priority.trim();
 		if (priority !== "" && !/^\d+$/.test(priority))
-			return {
-				index,
-				field: "priority",
-				message: `Row ${formatCount(index + 1)}: priority must be a whole number.`,
-			};
+			return { index, field: "priority", message: `Row ${index + 1}: priority must be a whole number.` };
 	}
 	return null;
 }
@@ -15,13 +15,10 @@ export function RecordsReadOnly({ records }: { records: LocalRecord[] }) {
 				Local records
 				<code {...stylex.props(shared.mono, config.panelKey)}>local_records</code>
 			</h2>
-			<p {...stylex.props(config.panelDescription)}>
-				Names this resolver answers by itself, without asking an upstream.
-			</p>
 			{records.length === 0 ? (
 				<p {...stylex.props(config.empty)}>The file declares no local records.</p>
 			) : (
-				<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+				<div {...stylex.props(shared.tableWrap)}>
 					<table {...stylex.props(config.table)}>
 						<thead>
 							<tr>
@@ -55,13 +52,10 @@ export function ZonesReadOnly({ zones }: { zones: ForwardZone[] }) {
 				Forward zones
 				<code {...stylex.props(shared.mono, config.panelKey)}>forward_zones</code>
 			</h2>
-			<p {...stylex.props(config.panelDescription)}>
-				Domains whose queries go to a resolver of their own instead of the upstream pool.
-			</p>
 			{zones.length === 0 ? (
 				<p {...stylex.props(config.empty)}>The file declares no forward zones.</p>
 			) : (
-				<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+				<div {...stylex.props(shared.tableWrap)}>
 					<table {...stylex.props(config.table)}>
 						<thead>
 							<tr>
@@ -3,7 +3,7 @@ import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { Link, useNavigate, useSearch } from "@tanstack/react-router";
 import * as stylex from "@stylexjs/stylex";
 import { DEFAULT_GROUP_ID } from "@/lib/defaultGroup";
-import { formatCount, formatTime } from "@/lib/format";
+import { formatTime } from "@/lib/format";
 import InlineError from "@/lib/InlineError";
 import {
 	blocklistsQuery,
@@ -225,7 +225,7 @@ function ClientCountLink({ group }: { group: Group }) {
 			<Link to="/clients" search={{ group: group.id }} {...stylex.props(shared.focusRing)}>
 				{count === undefined
 					? "Clients in this group"
-					: `${formatCount(count)} client${count === 1 ? "" : "s"} in this group`}
+					: `${count} client${count === 1 ? "" : "s"} in this group`}
 			</Link>
 		</p>
 	);
@@ -236,10 +236,6 @@ function GroupDetailReadOnly({ group }: { group: Group }) {
 		<div>
 			<h2 {...stylex.props(styles.detailHeading)}>{group.name}</h2>
 			<section {...stylex.props(config.panel)}>
-				<h3 {...stylex.props(config.panelHeading)}>Settings</h3>
-				<p {...stylex.props(config.panelDescription)}>
-					The group's name and whether its clients get safe search.
-				</p>
 				<DefinitionList
 					items={[
 						{ label: "Name", zonKey: "groups[].name", value: group.name },
@@ -263,7 +259,6 @@ function GroupSourcesReadOnly({ group }: { group: Group }) {
 				Assigned sources
 				<code {...stylex.props(shared.mono, config.panelKey)}>group_sources</code>
 			</h3>
-			<p {...stylex.props(config.panelDescription)}>The blocklists that apply to clients in this group.</p>
 			<QueryPanel query={assigned}>
 				{(sourceIds) => (
 					<QueryPanel query={blocklists}>
@@ -279,7 +274,7 @@ function AssignedSources({ sourceIds, catalogue }: { sourceIds: number[]; catalo
 	const assigned = catalogue.filter((source) => sourceIds.includes(source.id));
 	if (assigned.length === 0) return <p {...stylex.props(config.empty)}>This group is assigned no sources.</p>;
 	return (
-		<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+		<div {...stylex.props(shared.tableWrap)}>
 			<table {...stylex.props(config.table)}>
 				<thead>
 					<tr>
@@ -396,7 +391,6 @@ function GroupDetailEditable({ group }: { group: Group }) {

 			<section {...stylex.props(config.panel)}>
 				<h3 {...stylex.props(config.panelHeading)}>Assigned sources</h3>
-				<p {...stylex.props(config.panelDescription)}>The blocklists that apply to clients in this group.</p>
 				<QueryPanel query={blocklists}>
 					{(catalogue) => <GroupSourcesEditor groupId={group.id} blocklists={catalogue} />}
 				</QueryPanel>
@@ -434,9 +428,6 @@ function GroupRules({ group, editable }: { group: Group; editable: boolean }) {
 				Rules
 				{!editable && <code {...stylex.props(shared.mono, config.panelKey)}>rules</code>}
 			</h3>
-			<p {...stylex.props(config.panelDescription)}>
-				This group's own block and allow patterns, applied before any list.
-			</p>
 			<QueryPanel query={rules}>
 				{(all) => {
 					const scoped = all.filter((rule) => rule.group_id === group.id);
@@ -466,7 +457,7 @@ function RulesTable({ rules, editable }: { rules: Rule[]; editable: boolean }) {

 	return (
 		<>
-			<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+			<div {...stylex.props(shared.tableWrap)}>
 				<table {...stylex.props(config.table)}>
 					<thead>
 						<tr>
@@ -1,7 +1,7 @@
 import { useState } from "react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import * as stylex from "@stylexjs/stylex";
-import { formatCount, formatTime } from "@/lib/format";
+import { formatTime } from "@/lib/format";
 import InlineError from "@/lib/InlineError";
 import {
 	blocklistCreateMutation,
@@ -131,13 +131,10 @@ function SourcesReadOnly({ blocklists }: { blocklists: Blocklist[] }) {
 				Blocklist sources
 				<code {...stylex.props(shared.mono, config.panelKey)}>blocklist_sources</code>
 			</h2>
-			<p {...stylex.props(config.panelDescription)}>
-				The lists nxdns downloads, and what each one contributed at its last refresh.
-			</p>
 			{blocklists.length === 0 ? (
 				<p {...stylex.props(config.empty)}>The file declares no blocklist sources.</p>
 			) : (
-				<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+				<div {...stylex.props(shared.tableWrap)}>
 					<table {...stylex.props(config.table)}>
 						<thead>
 							<tr>
@@ -161,20 +158,12 @@ function SourcesReadOnly({ blocklists }: { blocklists: Blocklist[] }) {
 									</td>
 									<td {...stylex.props(shared.td, shared.mono)}>{b.url}</td>
 									<td {...stylex.props(shared.td)}>{String(b.enabled)}</td>
+									<td {...stylex.props(shared.td, shared.tabularNums)}>{b.domain_count}</td>
+									<td {...stylex.props(shared.td, shared.tabularNums)}>{b.wildcard_count}</td>
+									<td {...stylex.props(shared.td, shared.tabularNums)}>{b.exception_count}</td>
+									<td {...stylex.props(shared.td, shared.tabularNums)}>{b.skipped_regex_count}</td>
 									<td {...stylex.props(shared.td, shared.tabularNums)}>
-										{formatCount(b.domain_count)}
-									</td>
-									<td {...stylex.props(shared.td, shared.tabularNums)}>
-										{formatCount(b.wildcard_count)}
-									</td>
-									<td {...stylex.props(shared.td, shared.tabularNums)}>
-										{formatCount(b.exception_count)}
-									</td>
-									<td {...stylex.props(shared.td, shared.tabularNums)}>
-										{formatCount(b.skipped_regex_count)}
-									</td>
-									<td {...stylex.props(shared.td, shared.tabularNums)}>
-										{formatCount(b.skipped_unsupported_count)}
+										{b.skipped_unsupported_count}
 									</td>
 									<td {...stylex.props(shared.td)}>
 										{b.last_updated === null ? "never" : formatTime(b.last_updated)}
@@ -230,7 +219,7 @@ function SourcesEditor({ blocklists }: { blocklists: Blocklist[] }) {
 			{blocklists.length === 0 ? (
 				<p {...stylex.props(config.empty)}>No blocklist sources yet. Add one below.</p>
 			) : (
-				<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+				<div {...stylex.props(shared.tableWrap)}>
 					<table {...stylex.props(config.table)}>
 						<thead>
 							<tr>
@@ -268,20 +257,12 @@ function SourcesEditor({ blocklists }: { blocklists: Blocklist[] }) {
 											onChange={() => toggleEnabled(b)}
 										/>
 									</td>
+									<td {...stylex.props(shared.td, shared.tabularNums)}>{b.domain_count}</td>
+									<td {...stylex.props(shared.td, shared.tabularNums)}>{b.wildcard_count}</td>
+									<td {...stylex.props(shared.td, shared.tabularNums)}>{b.exception_count}</td>
+									<td {...stylex.props(shared.td, shared.tabularNums)}>{b.skipped_regex_count}</td>
 									<td {...stylex.props(shared.td, shared.tabularNums)}>
-										{formatCount(b.domain_count)}
-									</td>
-									<td {...stylex.props(shared.td, shared.tabularNums)}>
-										{formatCount(b.wildcard_count)}
-									</td>
-									<td {...stylex.props(shared.td, shared.tabularNums)}>
-										{formatCount(b.exception_count)}
-									</td>
-									<td {...stylex.props(shared.td, shared.tabularNums)}>
-										{formatCount(b.skipped_regex_count)}
-									</td>
-									<td {...stylex.props(shared.td, shared.tabularNums)}>
-										{formatCount(b.skipped_unsupported_count)}
+										{b.skipped_unsupported_count}
 									</td>
 									<td {...stylex.props(shared.td)}>
 										{b.last_updated === null ? "never" : formatTime(b.last_updated)}
@@ -223,7 +223,7 @@ export default function RecordsTab() {
 			)}
 			<QueryPanel query={query}>
 				{(records) => (
-					<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+					<div {...stylex.props(shared.tableWrap)}>
 						<table {...stylex.props(styles.table)}>
 							<thead>
 								<tr {...stylex.props(styles.headRow)}>
@@ -37,7 +37,7 @@ function renderValue(value: unknown) {
 export default function SettingsDefinitions({ settings }: { settings: Settings }) {
 	return (
 		<>
-			{SECTIONS.map(({ section, title, description, fields }) => {
+			{SECTIONS.map(({ section, title, fields }) => {
 				const values = sectionValues(settings, section);
 				const items: Definition[] = (fields as readonly AnyFieldDef[]).map((def) => ({
 					label: humanize(def.key),
@@ -56,7 +56,6 @@ export default function SettingsDefinitions({ settings }: { settings: Settings }
 				return (
 					<section key={section} {...stylex.props(config.panel)}>
 						<h2 {...stylex.props(config.panelHeading)}>{title}</h2>
-						<p {...stylex.props(config.panelDescription)}>{description}</p>
 						<div {...stylex.props(config.note)}>
 							<DefinitionList items={items} />
 						</div>
@@ -5,7 +5,6 @@ import InlineError from "@/lib/InlineError";
 import { settingsPutMutation } from "@/lib/queries";
 import { buildSettingsPatch } from "@/lib/settingsDiff";
 import type { Settings, SettingsEnvelope } from "@/lib/types";
-import { cardStyles } from "@/ui/Card";
 import Select from "@/ui/Select";
 import { styles as shared } from "@/ui/styles";
 import { colors, metrics } from "@/ui/tokens.stylex";
@@ -31,25 +30,18 @@ const styles = stylex.create({
 		margin: 0,
 		padding: 0,
 	},
-	/** A `fieldset` shrinks to its content by default, which would undo the card's own `minWidth: 0`. */
 	section: {
-		minInlineSize: 0,
+		borderRadius: metrics.radius,
+		borderWidth: 1,
+		borderStyle: "solid",
+		borderColor: colors.border,
+		padding: "1rem",
 	},
-	/**
-	 * A `legend` is otherwise drawn through the fieldset's top border, which cuts
-	 * the hairline and lifts the title away from its description. A floated
-	 * legend is not the fieldset's rendered legend (HTML rendering, "The fieldset
-	 * and legend elements"), so it lays out as ordinary content inside the
-	 * padding; the full width, and the `clear` on the description, keep the two
-	 * stacked.
-	 */
 	legend: {
-		float: "left",
-		width: "100%",
-		padding: 0,
-	},
-	description: {
-		clear: "both",
+		paddingInline: "0.25rem",
+		fontSize: "0.875rem",
+		lineHeight: "1.25rem",
+		fontWeight: 600,
 	},
 	/** One column on a phone, two from `sm`. */
 	fieldGrid: {
@@ -269,10 +261,9 @@ export default function SettingsForm({ envelope }: { envelope: SettingsEnvelope
 	return (
 		<form onSubmit={handleSubmit} {...stylex.props(styles.form)}>
 			<fieldset disabled={mutation.isPending} {...stylex.props(styles.sections)}>
-				{SECTIONS.map(({ section, title, description, fields }) => (
-					<fieldset key={section} {...stylex.props(cardStyles.card, styles.section)}>
-						<legend {...stylex.props(cardStyles.title, styles.legend)}>{title}</legend>
-						<p {...stylex.props(config.panelDescription, styles.description)}>{description}</p>
+				{SECTIONS.map(({ section, title, fields }) => (
+					<fieldset key={section} {...stylex.props(styles.section)}>
+						<legend {...stylex.props(styles.legend)}>{title}</legend>
 						<div {...stylex.props(styles.fieldGrid)}>
 							{(fields as readonly AnyFieldDef[]).map((def) => (
 								<FieldRow
@@ -67,13 +67,10 @@ function UpstreamsReadOnly({ upstreams }: { upstreams: Upstream[] }) {
 				Upstream pool
 				<code {...stylex.props(shared.mono, config.panelKey)}>upstreams</code>
 			</h2>
-			<p {...stylex.props(config.panelDescription)}>
-				The resolvers nxdns forwards to when neither a local record nor the cache has the answer.
-			</p>
 			{upstreams.length === 0 ? (
 				<p {...stylex.props(config.empty)}>The file declares no upstreams.</p>
 			) : (
-				<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+				<div {...stylex.props(shared.tableWrap)}>
 					<table {...stylex.props(config.table)}>
 						<thead>
 							<tr>
@@ -146,7 +143,7 @@ function UpstreamsEditor({ upstreams }: { upstreams: Upstream[] }) {
 			{upstreams.length === 0 ? (
 				<p {...stylex.props(config.empty)}>No upstreams yet. Add one below.</p>
 			) : (
-				<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+				<div {...stylex.props(shared.tableWrap)}>
 					<table {...stylex.props(config.table)}>
 						<thead>
 							<tr>
@@ -193,7 +193,7 @@ export default function ZonesTab() {
 			)}
 			<QueryPanel query={query}>
 				{(zones) => (
-					<div tabIndex={0} {...stylex.props(shared.tableWrap, shared.focusRing)}>
+					<div {...stylex.props(shared.tableWrap)}>
 						<table {...stylex.props(styles.table)}>
 							<thead>
 								<tr {...stylex.props(styles.headRow)}>
@@ -14,8 +14,6 @@ export interface FieldDef<S extends keyof Settings> {
 export interface SectionDef<S extends keyof Settings> {
 	section: S;
 	title: string;
-	/** The card head's one line: what the section governs, in the reader's words. */
-	description: string;
 	fields: readonly FieldDef<S>[];
 }

@@ -49,8 +47,6 @@ export const SECTIONS: readonly AnySectionDef[] = [
 	defineSection({
 		section: "upstream",
 		title: "Upstream",
-		description:
-			"How long nxdns waits on the upstream pool, per attempt and in total, and on a forward zone's resolver per read.",
 		fields: [
 			{ key: "attempt_timeout_ms", kind: "number" },
 			{ key: "read_timeout_ms", kind: "number" },
@@ -60,8 +56,6 @@ export const SECTIONS: readonly AnySectionDef[] = [
 	defineSection({
 		section: "dns",
 		title: "DNS",
-		description:
-			"The addresses and port the resolver listens on, and how many queries one client may send within the rate window.",
 		fields: [
 			{ key: "bind_ipv4", kind: "text" },
 			{ key: "bind_ipv6", kind: "text" },
@@ -73,7 +67,6 @@ export const SECTIONS: readonly AnySectionDef[] = [
 	defineSection({
 		section: "blocking",
 		title: "Blocking",
-		description: "What a blocked query is answered with, and for how long clients may keep that answer.",
 		fields: [
 			{ key: "response", kind: ["zero", "nxdomain"] },
 			{ key: "ttl", kind: "number" },
@@ -82,7 +75,6 @@ export const SECTIONS: readonly AnySectionDef[] = [
 	defineSection({
 		section: "cache",
 		title: "Cache",
-		description: "How many answers are kept, and how long a negative answer stays valid.",
 		fields: [
 			{ key: "size", kind: "number" },
 			{ key: "negative_ttl_max", kind: "number" },
@@ -91,7 +83,6 @@ export const SECTIONS: readonly AnySectionDef[] = [
 	defineSection({
 		section: "web",
 		title: "Web",
-		description: "Where this admin interface listens, how long a login lasts, and its request limits.",
 		fields: [
 			{ key: "enabled", kind: "boolean" },
 			{ key: "bind", kind: "text" },
@@ -103,29 +94,12 @@ export const SECTIONS: readonly AnySectionDef[] = [
 			{ key: "trusted_proxies", kind: "text" },
 		],
 	}),
-	defineSection({
-		section: "doh_server",
-		title: "DoH Server",
-		description: "DNS over HTTPS for clients that speak it: the listener and its certificate.",
-		fields: TLS_FIELDS,
-	}),
-	defineSection({
-		section: "dot_server",
-		title: "DoT Server",
-		description: "DNS over TLS for clients that speak it: the listener and its certificate.",
-		fields: TLS_FIELDS,
-	}),
-	defineSection({
-		section: "edns",
-		title: "EDNS",
-		description: "Whether the client's subnet is passed on to upstreams or stripped from the query.",
-		fields: [{ key: "ecs_mode", kind: ["strip", "forward"] }],
-	}),
+	defineSection({ section: "doh_server", title: "DoH Server", fields: TLS_FIELDS }),
+	defineSection({ section: "dot_server", title: "DoT Server", fields: TLS_FIELDS }),
+	defineSection({ section: "edns", title: "EDNS", fields: [{ key: "ecs_mode", kind: ["strip", "forward"] }] }),
 	defineSection({
 		section: "logging",
 		title: "Logging",
-		description:
-			"What the process log records and where it goes; how query history is buffered, flushed and kept, and which of its fields are hidden.",
 		fields: [
 			{ key: "level", kind: ["error", "warn", "info", "debug"] },
 			{ key: "retention_days", kind: "number" },
@@ -142,7 +116,6 @@ export const SECTIONS: readonly AnySectionDef[] = [
 	defineSection({
 		section: "disk",
 		title: "Disk",
-		description: "The free space below which nxdns warns, and below which it stops writing history.",
 		fields: [
 			{ key: "min_free_mb", kind: "number" },
 			{ key: "warn_free_mb", kind: "number" },
@@ -151,7 +124,6 @@ export const SECTIONS: readonly AnySectionDef[] = [
 	defineSection({
 		section: "blocklist_update",
 		title: "Blocklist Update",
-		description: "Whether the blocklists are fetched again on their own, and how often.",
 		fields: [
 			{ key: "enabled", kind: "boolean" },
 			{ key: "interval_hours", kind: "number" },
@@ -32,21 +32,12 @@ export const styles = stylex.create({
 	},
 	panelHeading: {
 		margin: 0,
+		marginBottom: "1rem",
 		fontSize: "1.4rem",
 		lineHeight: 1.2,
 		fontWeight: 650,
 		letterSpacing: "-0.015em",
 	},
-	/** The card head's one-line description (`ui/Card.tsx`), under a panel heading. */
-	panelDescription: {
-		margin: 0,
-		marginTop: "0.25rem",
-		marginBottom: "1.25rem",
-		fontSize: "0.875rem",
-		lineHeight: "1.25rem",
-		color: colors.textMuted,
-		textWrap: "pretty",
-	},
 	/** The collection's own key in the configuration file, beside its heading. */
 	panelKey: {
 		marginLeft: "0.5rem",
@@ -93,8 +93,7 @@ test("an open episode shows its facts, its copy and the error the server sent",
 	await screen.findByRole("heading", { name: "Blocklist source failed to update" });
 	expect(screen.getByText("Warning")).toBeTruthy();
 	expect(screen.getByText("StevenBlack")).toBeTruthy();
-	// The seconds since the fixture was anchored are the render's to add.
-	expect(screen.getByText(/^Active for 2h(?: \d+s)?$/)).toBeTruthy();
+	expect(screen.getByText("Active for 2h")).toBeTruthy();
 	expect(screen.getByText("Not yet — still failing")).toBeTruthy();
 	expect(screen.getByText("4")).toBeTruthy();
 	expect(screen.getByText("blocklist.refresh")).toBeTruthy();
@@ -4,10 +4,9 @@ import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { Link, useNavigate, useParams } from "@tanstack/react-router";
 import * as stylex from "@stylexjs/stylex";
 import InlineError from "@/lib/InlineError";
-import { formatCount, formatDuration, formatTime } from "@/lib/format";
+import { formatDuration, formatTime } from "@/lib/format";
 import { diagnosticPurgeMutation, diagnosticQuery } from "@/lib/queries";
 import ConfirmDialog from "@/ui/ConfirmDialog";
-import Card from "@/ui/Card";
 import { styles as shared } from "@/ui/styles";
 import { colors, metrics } from "@/ui/tokens.stylex";
 import SeverityBadge from "./SeverityBadge";
@@ -50,6 +49,12 @@ const styles = stylex.create({
 	panel: {
 		marginTop: "1rem",
 		maxWidth: "48rem",
+		borderRadius: metrics.radius,
+		borderWidth: 1,
+		borderStyle: "solid",
+		borderColor: colors.border,
+		backgroundColor: colors.surfaceRaised,
+		padding: metrics.cardPadding,
 	},
 	facts: {
 		display: "grid",
@@ -181,11 +186,7 @@ export default function DiagnosticDetailPage() {
 			<p {...stylex.props(styles.subject)}>{data.subject}</p>
 			<InlineError error={purge.error} />

-			<Card
-				title="Details"
-				description="How long this has been failing, how often it recurred, and whether it has cleared."
-				style={styles.panel}
-			>
+			<div {...stylex.props(styles.panel)}>
 				<dl {...stylex.props(styles.facts)}>
 					<dt {...stylex.props(styles.term)}>State</dt>
 					<dd {...stylex.props(styles.value)}>
@@ -198,7 +199,7 @@ export default function DiagnosticDetailPage() {
 					<dt {...stylex.props(styles.term)}>Last seen</dt>
 					<dd {...stylex.props(styles.value)}>{formatTime(data.last_seen)}</dd>
 					<dt {...stylex.props(styles.term)}>Occurrences</dt>
-					<dd {...stylex.props(styles.value, shared.tabularNums)}>{formatCount(data.occurrences)}</dd>
+					<dd {...stylex.props(styles.value, shared.tabularNums)}>{data.occurrences}</dd>
 					<dt {...stylex.props(styles.term)}>Resolved</dt>
 					<dd {...stylex.props(styles.value)}>
 						{data.resolved_at === null ? "Not yet — still failing" : formatTime(data.resolved_at)}
@@ -208,7 +209,7 @@ export default function DiagnosticDetailPage() {
 					<dt {...stylex.props(styles.term)}>Code</dt>
 					<dd {...stylex.props(styles.value, shared.mono)}>{data.code}</dd>
 				</dl>
-			</Card>
+			</div>

 			<h2 {...stylex.props(styles.sectionHeading)}>Impact</h2>
 			<p {...stylex.props(styles.prose)}>{copy.impact}</p>
@@ -153,7 +153,7 @@ test("active episodes come first, each with its title, subject, age and count",
 	const active = screen.getByText("Blocklist source failed to update").closest("li")!;
 	expect(within(active).getByText("Warning")).toBeTruthy();
 	expect(within(active).getByText("StevenBlack")).toBeTruthy();
-	expect(within(active).getByText(/Active for 1h(?: \d+s)? · 3 occurrences/)).toBeTruthy();
+	expect(within(active).getByText(/Active for 1h · 3 occurrences/)).toBeTruthy();

 	const failing = screen.getByText("Upstream failing").closest("li")!;
 	expect(within(failing).getByText("Error")).toBeTruthy();
@@ -10,7 +10,7 @@ import { Link, useNavigate, useSearch } from "@tanstack/react-router";
 import * as stylex from "@stylexjs/stylex";
 import * as api from "@/lib/api";
 import InlineError from "@/lib/InlineError";
-import { formatCount, formatDuration, formatTime } from "@/lib/format";
+import { formatDuration, formatTime } from "@/lib/format";
 import { diagnosticPurgeMutation, diagnosticsInfiniteQuery, diagnosticsPurgeResolvedMutation } from "@/lib/queries";
 import type { DiagnosticEvent, DiagnosticSeverity, DiagnosticState, DiagnosticsPage as Page } from "@/lib/types";
 import ConfirmDialog from "@/ui/ConfirmDialog";
@@ -236,7 +236,7 @@ function errorMessage(error: unknown): string {
 }

 function occurrenceText(count: number): string {
-	return `${formatCount(count)} ${count === 1 ? "occurrence" : "occurrences"}`;
+	return `${count} ${count === 1 ? "occurrence" : "occurrences"}`;
 }

 function rowsOf(section: Section): DiagnosticEvent[] {
@@ -357,7 +357,7 @@ function HistoryRow({ event, onPurge, busy }: { event: DiagnosticEvent; onPurge:
 			<td {...stylex.props(styles.cell, styles.nowrap, shared.tabularNums)}>
 				{event.resolved_at === null ? "—" : formatTime(event.resolved_at)}
 			</td>
-			<td {...stylex.props(styles.cell, styles.nowrap, shared.tabularNums)}>{formatCount(event.occurrences)}</td>
+			<td {...stylex.props(styles.cell, styles.nowrap, shared.tabularNums)}>{event.occurrences}</td>
 			<td {...stylex.props(styles.cell, styles.nowrap)}>
 				<button
 					type="button"
@@ -495,7 +495,7 @@ export default function DiagnosticsPage() {
 						<p {...stylex.props(styles.empty)}>Nothing has failed and recovered in the retained window.</p>
 					) : (
 						<>
-							<div tabIndex={0} {...stylex.props(styles.tableWrap, shared.focusRing)}>
+							<div {...stylex.props(styles.tableWrap)}>
 								<table {...stylex.props(styles.table)}>
 									<thead {...stylex.props(styles.head)}>
 										<tr>
@@ -523,9 +523,8 @@ export default function DiagnosticsPage() {
 								</table>
 							</div>
 							<p {...stylex.props(styles.footer, styles.note)}>
-								Showing{" "}
-								<span {...stylex.props(shared.tabularNums)}>{formatCount(historyRows.length)}</span>{" "}
-								resolved {historyRows.length === 1 ? "entry" : "entries"}
+								Showing <span {...stylex.props(shared.tabularNums)}>{historyRows.length}</span> resolved{" "}
+								{historyRows.length === 1 ? "entry" : "entries"}
 								{hasMore(history) ? "" : " — end of history"}
 							</p>
 							<MoreButton section={history} />
@@ -101,7 +101,7 @@ export function healthFacts(health: Health, locale?: string, timeZone?: string):
 			label: "Upstreams",
 			tone: upstreams.state === "unavailable" ? "danger" : "ok",
 			value: upstreams.state === "unavailable" ? "None reachable" : "Available",
-			detail: `${formatCount(upstreams.available)} of ${formatCount(upstreams.total)} enabled`,
+			detail: `${upstreams.available} of ${upstreams.total} enabled`,
 			...(upstreams.state === "unavailable"
 				? { link: { kind: "route", to: "/configuration/resolution", label: "Upstreams" } as FactLink }
 				: {}),
@@ -280,10 +280,9 @@ test("a bucket's tooltip lists at most four named clients, the quiet ones droppe
 		"192.0.2.44",
 		"192.0.2.43",
 		"192.0.2.42",
-		"Other",
 		"All clients",
 	]);
-	expect(screen.getByRole("table").querySelectorAll("th[scope=col]")).toHaveLength(8);
+	expect(screen.getByRole("table").querySelectorAll("th[scope=col]")).toHaveLength(7);
 });

 test("leaving the chart takes the tooltip and the dimming with it", () => {
@@ -304,25 +303,31 @@ test("leaving the chart takes the tooltip and the dimming with it", () => {
 * appear in the legend, the stack, the tooltip and the table saying only that it
 * is empty. The named clients stay at zero: a client that went quiet is a fact.
 */
-test("a window where Other counted nothing keeps it in the legend and the table, at zero", () => {
+test("a window where Other counted nothing drops it from every surface", () => {
 	const { container } = render(clients([{ client: "192.0.2.30", buckets: [10, 4] }], [0, 0]));

-	expect(Array.from(container.querySelectorAll("ul li")).map((item) => item.textContent)).toEqual([
-		"192.0.2.30",
-		"Other",
-	]);
+	expect(Array.from(container.querySelectorAll("ul li")).map((item) => item.textContent)).toEqual(["192.0.2.30"]);
 	expect(
 		within(screen.getByRole("table"))
 			.getAllByRole("columnheader")
 			.map((cell) => cell.textContent),
-	).toEqual(["Time", "192.0.2.30", "Other"]);
+	).toEqual(["Time", "192.0.2.30"]);

 	fireEvent.mouseOver(overlayRects(container)[0]);
 	const terms = Array.from((container.querySelector("dl") as HTMLElement).querySelectorAll("dt"));
-	expect(terms.map((term) => term.textContent)).toEqual(["192.0.2.30", "Other", "All clients"]);
+	expect(terms.map((term) => term.textContent)).toEqual(["192.0.2.30", "All clients"]);
 });

 test("the hidden table groups its counts like every other figure on the page", () => {
 	render(clients([{ client: "192.0.2.30", buckets: [12345] }], [0]));
 	expect(within(screen.getByRole("table")).getByRole("cell", { name: "12,345" })).toBeTruthy();
 });
+
+test("one query outside the named clients is enough to keep Other", () => {
+	const { container } = render(clients([{ client: "192.0.2.30", buckets: [10, 4] }], [0, 1]));
+
+	expect(Array.from(container.querySelectorAll("ul li")).map((item) => item.textContent)).toEqual([
+		"192.0.2.30",
+		"Other",
+	]);
+});
@@ -49,10 +49,11 @@ interface Series {
 }

 /**
- * "Other" last, so it sits at the top of every column rather than under a client.
- * It is always a series, even at zero across the window (ui-visual-redesign.md:
- * eight named clients plus Other): a reader comparing two scopes sees the same
- * legend in both, and a zero says the named clients were the whole story.
+ * "Other" last, so it sits at the top of every column rather than under a client,
+ * and dropped entirely when it counted nothing across the window: an aggregation
+ * bucket that aggregated nothing is a legend entry, a stack key, a tooltip row
+ * and a table column all saying zero. The named clients stay at zero, because a
+ * client that went quiet is something the reader wants to see.
 */
 function seriesOf(data: ClientChartData, names: ClientNames): Series[] {
 	const named = data.clients.map((client, rank) => ({
@@ -63,6 +64,7 @@ function seriesOf(data: ClientChartData, names: ClientNames): Series[] {
 		color: clientSeriesColor(rank),
 		buckets: client.buckets,
 	}));
+	if (data.other.every((count) => count === 0)) return named;
 	return [...named, { key: OTHER_KEY, label: "Other", color: seriesColor(OTHER_KEY), buckets: data.other }];
 }

@@ -101,7 +103,7 @@ export default function ClientChart({ data }: { data: ClientChartData }) {

 	const timestamps = columns.map((column) => column.ts);
 	const totals = columns.map((column) => series.reduce((sum, one) => sum + column[one.key], 0));
-	const plot = plotArea(width, Math.max(...totals));
+	const plot = plotArea(width);
 	const xScale = bandScale(timestamps, plot);
 	// Every series here is a disjoint part of the whole rather than a highlighted
 	// subset of a separately reported total, so the tallest column's own sum is
@@ -112,10 +114,9 @@ export default function ClientChart({ data }: { data: ClientChartData }) {
 	const centers = timestamps.map((ts) => slotCenter(xScale, ts, plot));

 	/**
-	 * The bucket's busiest clients, then Other, then the total — eight named
-	 * rows would be a table, and the reader pointing at a spike wants to know
-	 * who made it. Other is always there, at zero when the named clients were
-	 * the whole bucket, so the rows read the same from bucket to bucket.
+	 * The bucket's busiest clients, then the aggregate, then the total — eight
+	 * named rows would be a table, and the reader pointing at a spike wants to
+	 * know who made it.
 	 */
 	function tooltipOf(index: number): TooltipContent {
 		const column = columns[index];
@@ -124,7 +125,7 @@ export default function ClientChart({ data }: { data: ClientChartData }) {
 			.sort((a, b) => column[b.key] - column[a.key])
 			.slice(0, TOOLTIP_CLIENTS);
 		const other = series.find((one) => one.key === OTHER_KEY);
-		const rows = [...named, ...(other !== undefined ? [other] : [])].map((one) => ({
+		const rows = [...named, ...(other !== undefined && column[OTHER_KEY] > 0 ? [other] : [])].map((one) => ({
 			key: one.key,
 			label: one.label,
 			color: one.color,
@@ -140,7 +141,7 @@ export default function ClientChart({ data }: { data: ClientChartData }) {
 		<ChartRoot containerRef={containerRef}>
 			<svg
 				role="img"
-				aria-label={`Client activity over time, ${formatCount(bucketCount)} buckets, ${formatCount(series.length)} series`}
+				aria-label={`Client activity over time, ${bucketCount} buckets, ${series.length} series`}
 				width="100%"
 				height={CHART_HEIGHT}
 				viewBox={`0 0 ${width} ${CHART_HEIGHT}`}
@@ -9,7 +9,6 @@
 * the frame would drift. Nothing here imports a chart.
 */

-import { useCallback } from "react";
 import * as stylex from "@stylexjs/stylex";
 import { useQuery } from "@tanstack/react-query";
 import { useNavigate, useSearch } from "@tanstack/react-router";
@@ -66,22 +65,6 @@ const styles = stylex.create({
 		minWidth: { default: "11rem", [NARROW]: 0 },
 		flex: { default: null, [NARROW]: 1 },
 	},
-	/** Under the Device control: the list behind it did not load, so the control offers the household only. */
-	devicesFailed: {
-		margin: 0,
-		marginTop: "0.25rem",
-		fontSize: "0.75rem",
-		lineHeight: "1rem",
-		color: colors.textMuted,
-	},
-	retry: {
-		padding: 0,
-		borderWidth: 0,
-		backgroundColor: "transparent",
-		font: "inherit",
-		color: colors.primaryOnSurface,
-		cursor: "pointer",
-	},
 	/**
 	 * The height approximates the filled overview — stat tiles, two 240px charts
 	 * and the row of cards under them — so that the page does not jump when the
@@ -104,11 +87,9 @@ export interface OverviewScope {
 * The devices the reader can scope to: the whole household first, then every
 * registered client under its name. A scope the URL carries that the list has
 * never seen is still offered, as its address, so the control shows the scope
- * the page is actually under rather than silently claiming the household. A
- * list that failed to load is said so under the control, with a retry: the
- * household-only list is a failure, not the answer.
+ * the page is actually under rather than silently claiming the household.
 */
-function useDeviceOptions(client: string | undefined) {
+function useDeviceOptions(client: string | undefined): SelectOption[] {
 	const clients = useQuery(clientsQuery());
 	const names = useClientNames();
 	const known = (clients.data ?? []).map((one) => ({
@@ -119,9 +100,7 @@ function useDeviceOptions(client: string | undefined) {
 	if (client !== undefined && !known.some((option) => option.value === client)) {
 		options.push({ value: client, label: client });
 	}
-	const { refetch } = clients;
-	const retry = useCallback(() => void refetch(), [refetch]);
-	return { options, failed: clients.isError, retry };
+	return options;
 }

 export function OverviewToolbar({
@@ -138,18 +117,10 @@ export function OverviewToolbar({
 				<Select
 					aria-label="Device"
 					variant="toolbar"
-					options={devices.options}
+					options={devices}
 					value={scope.client ?? ALL_DEVICES}
 					onChange={(value) => onChange({ ...scope, client: value === ALL_DEVICES ? undefined : value })}
 				/>
-				{devices.failed && (
-					<p role="alert" {...stylex.props(styles.devicesFailed)}>
-						Device list unavailable.{" "}
-						<button type="button" onClick={devices.retry} {...stylex.props(styles.retry, shared.focusRing)}>
-							Retry
-						</button>
-					</p>
-				)}
 			</div>
 			<div {...stylex.props(styles.control)}>
 				<Select
@@ -271,10 +271,10 @@ test("naming a client does not recolour its series: colour goes by rank", async
 	expect(swatch.getAttribute("style")).toContain(clientSeriesColor(0));
 });

-test("the client chart keeps Other in a period where it counted nothing", async () => {
-	// The fixture's other series is all zeroes. Other is still a series, so the
-	// legend reads the same in every scope and its zero says the named clients
-	// were the whole story.
+test("the client chart drops Other in a period where it counted nothing", async () => {
+	// The fixture's other series is all zeroes. An aggregation bucket that
+	// aggregated nothing is a legend entry and a table column that say only that
+	// they are empty; the named clients stay, because a quiet client is a fact.
 	renderApp();
 	await screen.findByRole("heading", { name: "Client activity over time" });

@@ -283,7 +283,7 @@ test("the client chart keeps Other in a period where it counted nothing", async
 	// Twice each: the legend swatch and the column header of the table a screen
 	// reader gets instead of the graphic.
 	await waitFor(() => expect(within(chart as HTMLElement).getAllByText("192.0.2.30")).toHaveLength(2));
-	expect(within(chart as HTMLElement).getAllByText("Other")).toHaveLength(2);
+	expect(within(chart as HTMLElement).queryAllByText("Other")).toHaveLength(0);
 });

 test("the page is four tiles, two charts, the cache card and two donuts — no status or issues sections", async () => {
@@ -112,10 +112,9 @@ export default function TimeseriesChart({ data }: { data: TimeseriesData }) {

 	const columns = columnsOf(data.buckets);
 	const timestamps = columns.map((column) => column.ts);
-	const peak = Math.max(...columns.map((column) => column.queries));
-	const plot = plotArea(width, peak);
+	const plot = plotArea(width);
 	const xScale = pointScale(timestamps, plot);
-	const yScale = valueScale(peak, [plot.bottom, plot.y]);
+	const yScale = valueScale(Math.max(...columns.map((column) => column.queries)), [plot.bottom, plot.y]);
 	const yTicks = valueTicks(yScale);
 	const centers = timestamps.map((ts) => xScale(ts) ?? plot.x);
 	const pointsOf = (key: SeriesKey): [number, number][] =>
@@ -125,7 +124,7 @@ export default function TimeseriesChart({ data }: { data: TimeseriesData }) {
 		<ChartRoot containerRef={containerRef}>
 			<svg
 				role="img"
-				aria-label={`Queries over time, ${formatCount(data.buckets.length)} buckets: total and blocked queries per bucket`}
+				aria-label={`Queries over time, ${data.buckets.length} buckets: total and blocked queries per bucket`}
 				width="100%"
 				height={CHART_HEIGHT}
 				viewBox={`0 0 ${width} ${CHART_HEIGHT}`}
@@ -1,12 +1,7 @@
 import { render } from "@testing-library/react";
-import { formatCount } from "@/lib/format";
 import {
 	CHART_HEIGHT,
 	ChartFrame,
-	ChartTooltip,
-	MARGIN,
-	TICK_GLYPH_PX,
-	TICK_LABEL_GAP_PX,
 	bandPaddingInner,
 	bandScale,
 	labelTickValues,
@@ -38,91 +33,6 @@ describe("valueScale", () => {
 		expect(scale.ticks(5)).toEqual([0, 500, 1000, 1500]);
 		expect(valueTicks(scale)).toEqual([0, 500, 1000, 1500]);
 	});
-
-	/**
-	 * A query count is a whole number. d3 answers a domain of [0, 1] with fifths,
-	 * and "0.5" queries is a quantity the data cannot hold, so the fractional
-	 * ticks are dropped from the grid and the axis alike.
-	 */
-	test("a single-digit peak is ticked in whole queries", () => {
-		expect(valueTicks(valueScale(1, [240, 0]))).toEqual([0, 1]);
-		expect(valueTicks(valueScale(2, [240, 0]))).toEqual([0, 1, 2]);
-	});
-});
-
-describe("plotArea", () => {
-	/**
-	 * The value labels are grouped counts, so a chart that peaks in the millions
-	 * needs more room to its left than the default margin: "1,250,000" does not
-	 * fit where "120" does. The width is measured on a quarter above the peak,
-	 * because the tick above it is the widest label drawn.
-	 */
-	test("the left margin grows with the widest value label", () => {
-		expect(plotArea(640, 0).x).toBe(MARGIN.left);
-
-		const widest = formatCount(Math.ceil(1_000_000 * 1.25));
-		expect(plotArea(640, 1_000_000).x).toBe(widest.length * TICK_GLYPH_PX + TICK_LABEL_GAP_PX);
-		expect(plotArea(640, 1_000_000).x).toBeGreaterThan(MARGIN.left);
-	});
-});
-
-/**
- * `TooltipWithBounds` writes its own inline `transform` to place itself, and it
- * decides whether to flip above the anchor from that same number. Centring a
- * beside tooltip therefore has to reach the library as an `offsetTop`, measured
- * from the box, and not as a CSS transform the library cannot see.
- */
-describe("ChartTooltip", () => {
-	const BOX_HEIGHT = 40;
-
-	function withMeasuredBox(run: () => void) {
-		const original = Object.getOwnPropertyDescriptor(HTMLElement.prototype, "offsetHeight");
-		Object.defineProperty(HTMLElement.prototype, "offsetHeight", {
-			configurable: true,
-			get: () => BOX_HEIGHT,
-		});
-		try {
-			run();
-		} finally {
-			if (original) Object.defineProperty(HTMLElement.prototype, "offsetHeight", original);
-			else Reflect.deleteProperty(HTMLElement.prototype, "offsetHeight");
-		}
-	}
-
-	function renderTooltip(beside: boolean) {
-		const { container } = render(
-			<ChartTooltip
-				content={{ title: "12:00", rows: [{ key: "queries", label: "Total queries", value: "7" }] }}
-				index={0}
-				left={100}
-				top={100}
-				beside={beside}
-			/>,
-		);
-		return container.querySelector(".visx-tooltip") as HTMLElement;
-	}
-
-	/**
-	 * jsdom measures nothing, so both rects are zero-sized: the library takes its
-	 * window branch, nothing is clipped at 100px into a 1024x768 window, and the
-	 * unflipped `translate(left + offsetLeft, top + offsetTop)` is what it writes.
-	 */
-	test("a beside tooltip is offset by half the height it measures", () => {
-		withMeasuredBox(() => {
-			expect(renderTooltip(true).style.transform).toBe(`translate(116px, ${100 - BOX_HEIGHT / 2}px)`);
-		});
-	});
-
-	test("a hung tooltip clears its anchor by the corner offset", () => {
-		withMeasuredBox(() => {
-			expect(renderTooltip(false).style.transform).toBe("translate(108px, 108px)");
-		});
-	});
-
-	/** An unmeasured box is not centred at all, rather than centred on a guess. */
-	test("no measurable height leaves the tooltip on the anchor", () => {
-		expect(renderTooltip(true).style.transform).toBe("translate(116px, 100px)");
-	});
 });

 describe("bandPaddingInner", () => {
@@ -15,18 +15,13 @@ import { AxisBottom, AxisLeft, type TickRendererProps } from "@visx/axis";
 import { GridRows } from "@visx/grid";
 import { scaleBand, scaleLinear, scalePoint } from "@visx/scale";
 import { TooltipWithBounds } from "@visx/tooltip";
-import { formatBucketTime, formatCount } from "@/lib/format";
+import { formatBucketTime, formatCompact } from "@/lib/format";
 import { styles as shared } from "@/ui/styles";
 import { colors, layers, metrics } from "@/ui/tokens.stylex";

 export const CHART_HEIGHT = 240;
 export const MARGIN = { top: 8, right: 8, bottom: 22, left: 44 } as const;

-/** The 10px tick label's glyph width; digits and the comma in a grouped count are all about this wide. */
-export const TICK_GLYPH_PX = 6;
-/** The tick label's gap to the axis (`dx` below) plus a little air. */
-export const TICK_LABEL_GAP_PX = 10;
-
 /** The width a chart draws at before a measurement exists — jsdom, and the first paint. */
 const FALLBACK_WIDTH = 640;

@@ -47,20 +42,12 @@ export interface Plot {
 	bottom: number;
 }

-/**
- * The plot inside the axes. The left margin grows with the widest y label the
- * chart can show: counts are thousands-grouped everywhere, ticks included, so
- * "120,000" needs the room "120" does not. The tick above `maxValue` can add a
- * digit or a comma, so the width is measured on a quarter more.
- */
-export function plotArea(width: number, maxValue = 0): Plot {
+export function plotArea(width: number): Plot {
 	const height = Math.max(0, CHART_HEIGHT - MARGIN.top - MARGIN.bottom);
-	const label = formatCount(Math.ceil(maxValue * 1.25));
-	const left = Math.max(MARGIN.left, label.length * TICK_GLYPH_PX + TICK_LABEL_GAP_PX);
 	return {
-		x: left,
+		x: MARGIN.left,
 		y: MARGIN.top,
-		width: Math.max(0, width - left - MARGIN.right),
+		width: Math.max(0, width - MARGIN.left - MARGIN.right),
 		height,
 		bottom: MARGIN.top + height,
 	};
@@ -100,13 +87,9 @@ export function valueScale(max: number, range: [number, number]) {

 export type ValueScale = ReturnType<typeof valueScale>;

-/**
- * The tick values the grid and the value axis both draw. A query count is a
- * whole number, so d3's fractional ticks — 0.5 of a query at a peak of 1 — are
- * dropped rather than labelled.
- */
+/** The tick values the grid and the value axis both draw. */
 export function valueTicks(scale: ValueScale): number[] {
-	return scale.ticks(Y_TICK_COUNT).filter(Number.isInteger);
+	return scale.ticks(Y_TICK_COUNT);
 }

 /**
@@ -216,6 +199,9 @@ const styles = stylex.create({
 		fontSize: "10px",
 	},
 	tooltip: {
+		pointerEvents: "none",
+		position: "absolute",
+		zIndex: layers.tooltip,
 		borderRadius: metrics.radius,
 		borderWidth: 1,
 		borderStyle: "solid",
@@ -227,11 +213,9 @@ const styles = stylex.create({
 		lineHeight: "1rem",
 		boxShadow: "0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1)",
 	},
-	/** The positioning shell: `TooltipWithBounds` owns its inline transform, so nothing visual may sit here. */
-	tooltipShell: {
-		pointerEvents: "none",
-		position: "absolute",
-		zIndex: layers.tooltip,
+	/** Beside a point, the box is centred on the point's height rather than hung from it. */
+	tooltipBeside: {
+		transform: "translateY(-50%)",
 	},
 	tooltipTitle: {
 		fontWeight: 500,
@@ -357,7 +341,7 @@ export function ChartFrame({
 				hideAxisLine
 				hideTicks
 				tickLength={0}
-				tickFormat={(value) => formatCount(Number(value))}
+				tickFormat={(value) => formatCompact(Number(value))}
 				// `dy` overrides AxisLeft's own 0.25em nudge, which would double up
 				// with the middle baseline this app centres its value labels on.
 				tickLabelProps={{ dx: "-6px", dy: 0, textAnchor: "end", dominantBaseline: "middle" }}
@@ -498,8 +482,7 @@ export interface TooltipContent {
 /**
 * `TooltipWithBounds` positions itself with an inline transform and drops it
 * when `unstyled` is set, so the default look is replaced by handing it an empty
- * style object rather than by turning styling off. What it keeps is the
- * positioning; the box the reader sees is the element inside it.
+ * style object rather than by turning styling off.
 */
 const NO_INLINE_STYLE = {};

@@ -526,11 +509,8 @@ export function ChartTooltip({
 	top?: number;
 	/**
 	 * Beside the anchor at its own height rather than hung from the chart's top:
-	 * the area chart's placement, where `top` is the point's y. The centring is a
-	 * negative half-height `offsetTop`, not a CSS transform, so that the flip
-	 * `TooltipWithBounds` computes from its own rect sees where the box really
-	 * lands. It flips the box to the anchor's left when it would run past the
-	 * right edge, and above the anchor when it would run past the bottom.
+	 * the area chart's placement, where `top` is the point's y. `TooltipWithBounds`
+	 * flips the box to the anchor's left when it would run past the right edge.
 	 */
 	beside?: boolean;
 }) {
@@ -540,25 +520,16 @@ export function ChartTooltip({
 	// a digit boundary, or resolve a client's name, and the stale width would place
 	// it wrongly at the right edge.
 	const measureKey = [index, content.title, ...content.rows.map((row) => `${row.label}=${row.value}`)].join("|");
-	const box = useRef<HTMLDivElement>(null);
-	const [height, setHeight] = useState(0);
-	// The centring offset is half the box's own height, so it cannot be known
-	// before the box exists. `measureKey` remounts the whole tooltip per content
-	// change, so one measurement per mount covers every size the box takes.
-	useLayoutEffect(() => {
-		if (box.current) setHeight(box.current.offsetHeight);
-	}, []);
 	return (
 		<TooltipWithBounds
 			key={measureKey}
 			left={left}
 			top={top}
 			offsetLeft={beside ? BESIDE_OFFSET : CORNER_OFFSET}
-			offsetTop={beside ? -height / 2 : CORNER_OFFSET}
+			offsetTop={beside ? 0 : CORNER_OFFSET}
 			style={NO_INLINE_STYLE}
-			className={stylex.props(styles.tooltipShell).className}
+			className={stylex.props(styles.tooltip, beside && styles.tooltipBeside).className}
 		>
-			<div ref={box} {...stylex.props(styles.tooltip)}>
 			<div {...stylex.props(styles.tooltipTitle)}>{content.title}</div>
 			<dl {...stylex.props(styles.tooltipList)}>
 				{content.rows.map((row) => (
@@ -576,7 +547,6 @@ export function ChartTooltip({
 					</div>
 				))}
 			</dl>
-			</div>
 		</TooltipWithBounds>
 	);
 }
@@ -3,42 +3,12 @@ import { parseClient } from "./clientScope";
 test("one address passes, and nothing else does", () => {
 	expect(parseClient("192.0.2.30")).toBe("192.0.2.30");
 	expect(parseClient("2001:db8::1")).toBe("2001:db8::1");
-	expect(parseClient("::1")).toBe("::1");
-	expect(parseClient("::ffff:192.0.2.30")).toBe("192.0.2.30");
-	expect(parseClient("fe80::1%25eth0")).toBeUndefined();
-	// An IPv4 tail is the last 32 bits, so nothing may follow it.
-	expect(parseClient("192.0.2.30::")).toBeUndefined();
-	expect(parseClient("::192.0.2.30:1")).toBeUndefined();
-	expect(parseClient("2001:db8:0:0:0:0:0:0:1")).toBeUndefined();
-	expect(parseClient("2001:db8::1::2")).toBeUndefined();
-	expect(parseClient("2001:db8::1:2:3:4:5:6:7")).toBeUndefined();
-	expect(parseClient("256.0.0.1")).toBeUndefined();
-	expect(parseClient("192.0.2")).toBeUndefined();
-	expect(parseClient(" 192.0.2.30")).toBeUndefined();
-	expect(parseClient("abc")).toBeUndefined();
 	expect(parseClient(undefined)).toBeUndefined();
 	expect(parseClient("")).toBeUndefined();
 	expect(parseClient(7)).toBeUndefined();
 	// A list is the Activity filter's grammar, not this page's.
 	expect(parseClient("192.0.2.30,192.0.2.31")).toBeUndefined();
-});
-
-test("an IPv6 address is reduced to the spelling the logger stores", () => {
-	expect(parseClient("2001:DB8::1")).toBe("2001:db8::1");
-	expect(parseClient("2001:0db8:0000:0000:0000:0000:0000:0001")).toBe("2001:db8::1");
-	expect(parseClient("2001:db8:0:0:1:0:0:1")).toBe("2001:db8::1:0:0:1");
-	expect(parseClient("1:0:0:1:0:0:0:1")).toBe("1:0:0:1::1");
-	expect(parseClient("0:0:0:0:0:0:0:0")).toBe("::");
-	expect(parseClient("2001:db8:0:1:1:1:1:1")).toBe("2001:db8:0:1:1:1:1:1");
-});
-
-/**
- * `src/platform/address.zig` prints hex groups with RFC 5952 compression and
- * nothing else, and it normalizes an IPv4-mapped address to the plain IPv4, so
- * a dotted tail in a pasted link has to be folded the same way to match.
- */
-test("an IPv4 tail is folded into hextets, and a mapped address into its IPv4", () => {
-	expect(parseClient("2001:db8::192.0.2.30")).toBe("2001:db8::c000:21e");
-	expect(parseClient("::ffff:192.0.2.30")).toBe("192.0.2.30");
-	expect(parseClient("::FFFF:C000:021E")).toBe("192.0.2.30");
+	// Longer than any address the server stores.
+	expect(parseClient("1".repeat(46))).toBeUndefined();
+	expect(parseClient("1".repeat(45))).toBe("1".repeat(45));
 });
@@ -1,96 +1,16 @@
 /**
 * The device Overview is scoped to, as URL state beside the period.
 *
- * The API takes one exact address (no list) and matches the text the logger
- * stored, so that is what the route lets through: a value that is not an IPv4
- * or IPv6 address is dropped from the URL rather than sent on to a 400, and an
- * IPv6 address is reduced to the RFC 5952 spelling the logger writes, so an
- * uppercase or expanded form in a pasted link still finds its client. The
- * server writes hex groups only, so an IPv4 tail is folded into the two hextets
- * it names and an IPv4-mapped address is reduced to its plain IPv4. An absent
- * scope is the whole household.
+ * The API takes one exact address (`logger.max_client_len` bytes at most, no
+ * list), so that is what the route lets through: anything else is dropped from
+ * the URL rather than sent on to a 400. An absent scope is the whole household.
 */

-const IPV4 = /^(?:(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)\.){3}(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)$/;
-const HEXTET = /^[0-9a-f]{1,4}$/i;
-
-/** The two hextets an IPv4 tail names: `192.0.2.30` is `c000:21e`. */
-function ipv4Hextets(dotted: string): string[] {
-	const octets = dotted.split(".").map(Number);
-	return [((octets[0] << 8) | octets[1]).toString(16), ((octets[2] << 8) | octets[3]).toString(16)];
-}
-
-/**
- * One side of a `::` as hextets, or null. An IPv4 tail is folded into the two
- * hextets it names — the server prints an IPv6 address as hex groups only,
- * never with a dotted tail — and it is read only where the address ends, since
- * the tail is the last 32 bits and nothing may follow it.
- */
-function sideHextets(parts: string[], dottedAllowed: boolean): string[] | null {
-	const last = parts[parts.length - 1];
-	const hextets =
-		last !== undefined && last.includes(".")
-			? dottedAllowed && IPV4.test(last)
-				? [...parts.slice(0, -1), ...ipv4Hextets(last)]
-				: null
-			: parts;
-	if (hextets === null) return null;
-	return hextets.every((group) => HEXTET.test(group)) ? hextets : null;
-}
-
-/**
- * RFC 4291 text — up to eight hextets, one `::` at most, an IPv4 tail allowed
- * as the last 32 bits — parsed to its eight hextets, or null.
- */
-function ipv6Groups(value: string): string[] | null {
-	const halves = value.split("::");
-	if (halves.length > 2) return null;
-	const split = halves.length === 2;
-	const head = sideHextets(halves[0] === "" ? [] : (halves[0] as string).split(":"), !split);
-	const tail = sideHextets(split && halves[1] !== "" ? (halves[1] as string).split(":") : [], split);
-	if (head === null || tail === null) return null;
-	const width = head.length + tail.length;
-	if (split ? width >= 8 : width !== 8) return null;
-	const zeros = Array.from({ length: 8 - width }, () => "0");
-	const expanded = split ? [...head, ...zeros, ...tail] : head;
-	return expanded.map((group) => group.replace(/^0+(?=.)/, "").toLowerCase());
-}
-
-/** RFC 5952: lowercase, no leading zeros, the longest run of two or more zero groups as `::` (the first on a tie). */
-function compressIpv6(groups: string[]): string {
-	let best = { start: -1, length: 0 };
-	for (let i = 0; i < groups.length;) {
-		if (groups[i] !== "0") {
-			i += 1;
-			continue;
-		}
-		let j = i;
-		while (j < groups.length && groups[j] === "0") j += 1;
-		if (j - i >= 2 && j - i > best.length) best = { start: i, length: j - i };
-		i = j;
-	}
-	if (best.start < 0) return groups.join(":");
-	const head = groups.slice(0, best.start).join(":");
-	const tail = groups.slice(best.start + best.length).join(":");
-	return `${head}::${tail}`;
-}
-
-/**
- * The dotted IPv4 an IPv4-mapped address stands for, or null. The server
- * normalizes `::ffff:a.b.c.d` to the plain `a.b.c.d`, so a link that spells the
- * mapped form has to be reduced the same way to find its client.
- */
-function mappedIpv4(groups: string[]): string | null {
-	if (groups.slice(0, 5).some((group) => group !== "0") || groups[5] !== "ffff") return null;
-	const high = Number.parseInt(groups[6] as string, 16);
-	const low = Number.parseInt(groups[7] as string, 16);
-	return [high >> 8, high & 0xff, low >> 8, low & 0xff].join(".");
-}
+/** `logger.max_client_len` on the server: the longest textual address it stores. */
+const MAX_CLIENT_LEN = 45;

 export function parseClient(value: unknown): string | undefined {
-	if (typeof value !== "string") return undefined;
-	if (IPV4.test(value)) return value;
-	const groups = ipv6Groups(value);
-	if (groups === null) return undefined;
-	return mappedIpv4(groups) ?? compressIpv6(groups);
+	if (typeof value !== "string" || value.length === 0 || value.length > MAX_CLIENT_LEN) return undefined;
+	if (value.includes(",")) return undefined;
+	return value;
 }
@@ -6,8 +6,8 @@
 * completion. One request cannot disagree with itself, so those behaviours have
 * no subject left and are gone rather than ported. What survived the collapse is
 * pinned below: the three states, and the one rule a single request still does
- * not settle — that the body of the scope the reader just left, period or
- * device, must never render under the new scope's label.
+ * not settle — that a `keepPreviousData` body from the period the reader left
+ * must never render under the new period's label.
 */

 import { render, screen, waitFor } from "@testing-library/react";
@@ -63,8 +63,8 @@ afterEach(() => vi.unstubAllGlobals());
 /** The last retry the hook handed out, so a test can spend it. */
 let lastRetry: () => void;

-function Probe({ period, client }: { period: Period; client?: string }) {
-	const panel = useOverviewWindow(period, client);
+function Probe({ period }: { period: Period }) {
+	const panel = useOverviewWindow(period, undefined);
 	if (panel.status === "error") lastRetry = panel.retry;
 	const detail =
 		panel.status === "ready"
@@ -75,18 +75,18 @@ function Probe({ period, client }: { period: Period; client?: string }) {
 	return <p>{`${panel.status}:${detail}`}</p>;
 }

-function renderProbe(period: Period = "24h", scope?: string) {
+function renderProbe(period: Period = "24h") {
 	const client = createQueryClient();
 	const view = render(
 		<QueryClientProvider client={client}>
-			<Probe period={period} client={scope} />
+			<Probe period={period} />
 		</QueryClientProvider>,
 	);
 	return {
-		rerenderWith: (next: Period, nextScope?: string) =>
+		rerenderWith: (next: Period) =>
 			view.rerender(
 				<QueryClientProvider client={client}>
-					<Probe period={next} client={nextScope} />
+					<Probe period={next} />
 				</QueryClientProvider>,
 			),
 	};
@@ -115,24 +115,13 @@ test("a failed request is one error for the whole page, with a retry that refetc
 	expect(calls).toBeGreaterThan(spent);
 });

-test("a previous period's body never renders under the new period's label", async () => {
+test("a retained previous-period body never renders under the new period's label", async () => {
 	const { rerenderWith } = renderProbe("24h");
 	await waitFor(() => expect(line()).toBe(`ready:24h@${UNTIL}`));

 	rerenderWith("1h");
-	// The 24h body is a complete answer and still the wrong one to draw under
-	// "1h", so the page waits for its own.
+	// `keepPreviousData` is holding the 24h body. It is a complete answer and
+	// still the wrong one to draw under "1h", so the page waits.
 	expect(line()).toBe("loading:");
 	await waitFor(() => expect(line()).toBe(`ready:1h@${UNTIL}`));
 });
-
-test("rescoping to a device under the same period waits for that device's body", async () => {
-	const { rerenderWith } = renderProbe("24h");
-	await waitFor(() => expect(line()).toBe(`ready:24h@${UNTIL}`));
-
-	rerenderWith("24h", "192.0.2.30");
-	// Same period, so the household body would pass a period check; it is
-	// still the wrong scope to draw under the device's name.
-	expect(line()).toBe("loading:");
-	await waitFor(() => expect(line()).toBe(`ready:24h@${UNTIL}`));
-});
@@ -8,15 +8,15 @@
 * breakdowns describe the same span and the same database state by construction,
 * and none of that reconciliation has anything left to reconcile.
 *
- * The query key carries the period and the client, so the body the hook
- * returns is always the body of the scope the toolbar names. A rescope shows
- * the loading state until its own answer lands rather than the previous
- * scope's charts under the new label: a complete, self-consistent body for the
- * wrong device is still the wrong body.
+ * What remains is the one rule a single request does not settle by itself.
+ * `keepPreviousData` holds the body of the period the reader just left — a
+ * complete, self-consistent answer, and still the wrong one to draw under the
+ * new label — so a body is a member of this window only while its own `period`
+ * is the selected one. Until then the page is loading.
 */

 import { useCallback } from "react";
-import { useQuery } from "@tanstack/react-query";
+import { keepPreviousData, useQuery } from "@tanstack/react-query";
 import { overviewQuery } from "@/lib/queries";
 import type { Overview, Period } from "@/lib/types";

@@ -24,11 +24,11 @@ export type Panel<T> =
 	{ status: "loading" } | { status: "error"; error: unknown; retry: () => void } | { status: "ready"; data: T };

 export function useOverviewWindow(period: Period, client: string | undefined): Panel<Overview> {
-	const query = useQuery(overviewQuery(period, client));
+	const query = useQuery({ ...overviewQuery(period, client), placeholderData: keepPreviousData });
 	const { refetch } = query;
 	const retry = useCallback(() => void refetch(), [refetch]);

 	if (query.isError) return { status: "error", error: query.error, retry };
-	if (query.data !== undefined) return { status: "ready", data: query.data };
+	if (query.data !== undefined && query.data.period === period) return { status: "ready", data: query.data };
 	return { status: "loading" };
 }
@@ -3,7 +3,6 @@ import * as stylex from "@stylexjs/stylex";
 import { ApiError } from "@/lib/api";
 import { styles as shared } from "@/ui/styles";
 import { colors } from "@/ui/tokens.stylex";
-import { formatDuration } from "@/lib/format";

 const styles = stylex.create({
 	message: {
@@ -46,7 +45,7 @@ export default function InlineError({ error, onRetry }: { error: unknown; onRetr
 		if (error.status === 429) {
 			message =
 				remaining !== null && remaining > 0
-					? `Rate limited. Try again in ${formatDuration(remaining)}.`
+					? `Rate limited. Try again in ${remaining}s.`
 					: "Rate limited. Try again.";
 		} else if (error.status === 503) {
 			message = "The server is starting or degraded. Try again shortly.";
@@ -1,6 +1,7 @@
 import {
 	formatBytes,
 	formatClock,
+	formatCompact,
 	formatCount,
 	formatDuration,
 	formatMicros,
@@ -11,7 +12,7 @@ import {

 test("formatTime renders unix seconds in the given locale and zone", () => {
 	// 2024-01-01T00:00:00Z; ICU emits U+202F before AM/PM in recent Node.
-	expect(formatTime(1704067200, "en-US", "UTC").replace(/\u202f/g, " ")).toBe("Jan 1, 2024, 12:00:00 AM");
+	expect(formatTime(1704067200, "en-US", "UTC").replace(/ /g, " ")).toBe("Jan 1, 2024, 12:00:00 AM");
 });

 test("formatClock states the time of day alone, for a stamp read against now", () => {
@@ -28,6 +29,12 @@ test("formatCount groups thousands", () => {
 	expect(formatCount(1_234_567)).toBe("1,234,567");
 });

+test("formatCompact squeezes an axis label", () => {
+	expect(formatCompact(950)).toBe("950");
+	expect(formatCompact(18432)).toBe("18K");
+	expect(formatCompact(2_500_000)).toBe("2.5M");
+});
+
 test("formatPercent always carries two decimals, rounded half up", () => {
 	expect(formatPercent(0)).toBe("0.00%");
 	expect(formatPercent(1)).toBe("100.00%");
@@ -87,16 +94,11 @@ test("formatMicros renders milliseconds with one decimal", () => {
 });

 /**
- * The contract's teeth, as far as a text scan can bite: no source outside this
- * module calls a number-formatting API. A bare `{count}` in JSX is invisible to
- * this scan and is caught in review; the scan closes the door on the four ways
- * a competing rule would be written. `datetime-local` zero-padding in
- * `activity/datetime.ts` is a wire grammar, not a display rule, and is the one
- * allowed `padStart`. Identifiers, configured values and preset labels are not
- * quantities at all and are exempt by the header rule, so the scan never sees
- * them.
+ * The contract's teeth: nothing outside this module formats a number for the
+ * reader. `datetime-local` zero-padding in `activity/datetime.ts` is a wire
+ * grammar, not a display rule, and is the one allowed `padStart`.
 */
-test("no source file outside format.ts calls a number-formatting API", () => {
+test("no source file outside format.ts formats a number inline", () => {
 	const sources = import.meta.glob<string>("../**/*.{ts,tsx}", { query: "?raw", import: "default", eager: true });
 	const offenders: string[] = [];
 	for (const [path, text] of Object.entries(sources)) {
@@ -6,16 +6,6 @@
 * duration is its two largest nonzero units with no zero padding. A call site
 * that formats inline is a defect; the sweep test in `format.test.ts` and the
 * review both hunt for one.
- *
- * What the contract covers is a measured quantity the reader compares: a count,
- * a share, a rate, a duration, a size in bytes, a time. Three kinds of number
- * are not quantities and render as written. An identifier or a protocol code —
- * a group or source id, an RCODE, a QCLASS, an unknown QTYPE's number — names a
- * thing rather than measuring one, though a row's ordinal is a count. A
- * configured value shown next to or inside the input that edits it — a TTL of
- * 3600, a cache size of 10000, a priority — must read back exactly as the
- * operator typed it. And the fixed label of a preset in a menu — "Past 24
- * hours", "5 minutes" — is copy, not a measurement.
 */

 /** Unix seconds → localized date-time. `locale`/`timeZone` exist for deterministic tests. */
@@ -51,12 +41,18 @@ export function formatBucketTime(unixSeconds: number, bucketSeconds: number): st
 }

 const grouped = new Intl.NumberFormat("en-US");
+const compact = new Intl.NumberFormat("en-US", { notation: "compact" });

 /** A count, thousands-grouped: 18432 → "18,432". */
 export function formatCount(count: number): string {
 	return grouped.format(count);
 }

+/** A count squeezed for an axis label: 18432 → "18K". Never for a figure the reader acts on. */
+export function formatCompact(count: number): string {
+	return compact.format(count);
+}
+
 /**
 * Round half up at `decimals` places. `toFixed` rounds the binary value, so
 * 15.435 (stored just under) would print 15.43; the nudge lifts an exact half
@@ -48,7 +48,7 @@ export const healthQuery = () =>
 	queryOptions({ queryKey: queryKeys.health, queryFn: api.getHealth, refetchInterval: 10_000 });

 export const versionQuery = () =>
-	queryOptions({ queryKey: queryKeys.version, queryFn: api.getVersion, refetchInterval: 60_000 });
+	queryOptions({ queryKey: queryKeys.version, queryFn: api.getVersion, staleTime: Infinity });

 export const overviewQuery = (period: Period = "24h", client?: string) =>
 	queryOptions({
@@ -52,7 +52,6 @@ import {
 import type { Period } from "@/lib/types";
 import { styles as shared } from "@/ui/styles";
 import { colors } from "@/ui/tokens.stylex";
-import { formatDuration } from "@/lib/format";

 export interface RouterContext {
 	queryClient: QueryClient;
@@ -106,10 +105,7 @@ function RouteError({ error }: ErrorComponentProps) {
 			detail = error.message;
 		} else if (error.status === 429) {
 			title = "Rate limited";
-			detail =
-				error.retryAfter !== undefined
-					? `Try again in ${formatDuration(error.retryAfter)}.`
-					: "Try again shortly.";
+			detail = error.retryAfter !== undefined ? `Try again in ${error.retryAfter}s.` : "Try again shortly.";
 		} else if (error.status >= 500) {
 			title = "Internal error";
 		} else {
@@ -101,10 +101,9 @@ export function ProtectionDot() {
 }

 /**
- * Uptime as of now, not as of the fetch: the version answer is a minute old at
- * most, so the seconds it reported are aged by the time since it landed. A
- * restart shows within that minute. Ticks every second, because the first
- * minute reads in seconds.
+ * Uptime as of now, not as of the fetch: the version answer is cached for the
+ * session, so the seconds it reported are aged by the time since it landed.
+ * Ticks every second, because the first minute reads in seconds.
 */
 function useUptimeSeconds(): number | null {
 	const version = useQuery(versionQuery());
@@ -13,15 +13,6 @@ test("open episodes are the count, warnings and errors together", () => {
 	expect(badge).toEqual({ text: "3", label: "3 active diagnostic events" });
 });

-/** Four digits of open episodes read as one number, grouped like every other count. */
-test("a four-figure count is grouped", () => {
-	const badge = diagnosticsBadge(
-		health({ diagnostics: { state: "recording", active_warnings: 1200, active_errors: 34 } }),
-		false,
-	);
-	expect(badge).toEqual({ text: "1,234", label: "1,234 active diagnostic events" });
-});
-
 test("one open episode is counted in the singular", () => {
 	const badge = diagnosticsBadge(
 		health({ diagnostics: { state: "recording", active_warnings: 0, active_errors: 1 } }),
@@ -14,7 +14,6 @@
 */

 import type { Health } from "@/lib/types";
-import { formatCount } from "@/lib/format";

 export interface NavBadge {
 	/** What the badge shows. Shape and text, never colour alone. */
@@ -31,10 +30,7 @@ export function diagnosticsBadge(health: Health | undefined, pollFailed: boolean
 	if (health === undefined) return null;
 	const open = health.diagnostics.active_warnings + health.diagnostics.active_errors;
 	if (open > 0) {
-		return {
-			text: formatCount(open),
-			label: `${formatCount(open)} active diagnostic ${open === 1 ? "event" : "events"}`,
-		};
+		return { text: String(open), label: `${open} active diagnostic ${open === 1 ? "event" : "events"}` };
 	}
 	if (health.status === "degraded") return { text: "!", label: "Health degraded" };
 	return null;
@@ -264,7 +264,6 @@ export const styles = stylex.create({
 		paddingInline: "0.75rem",
 		paddingBlock: "0.5rem",
 	},
-	/** Focusable: a table wider than a phone scrolls sideways, and a keyboard must be able to reach the scroll. */
 	tableWrap: {
 		marginTop: "1rem",
 		overflowX: "auto",
@@ -92,7 +92,7 @@ export const colors = stylex.defineVars({
 	seriesMagenta: { default: "oklch(66% 0.14 340)", [DARK]: "oklch(66% 0.14 340)" },
 	seriesOrange: { default: "oklch(70% 0.14 55)", [DARK]: "oklch(70% 0.14 55)" },
 	seriesOlive: { default: "oklch(72% 0.11 120)", [DARK]: "oklch(72% 0.11 120)" },
-	seriesOther: { default: "oklch(80% 0.01 260)", [DARK]: "oklch(80% 0.01 260)" },
+	seriesOther: { default: "oklch(80% 0.01 260)", [DARK]: "oklch(45% 0.01 260)" },
 	/**
 	 * The query-types ring: the accent's hue stepped in lightness and chroma from
 	 * the busiest type outward. Six steps cover every ring the API answers with