Add new components, typography, badge contrast, and screen layout refactors

New element components:
- ListToggle: expand/collapse button using react-icons (RiExpandVerticalLine/RiCollapseVerticalLine)
- LogLevelBadge: extracted from LogEntry, handles all 8 log levels with filled variant and dark/light text contrast

New group components:
- ViewHeader: shared header bar for ConnectedView and UnconnectedView with discriminated union on `connected` prop; MCP logo links to modelcontextprotocol.io
- ServerListControls: combines ListToggle and AddServerMenu, hides toggle when no servers
- LogStreamPanel: extracted from LoggingScreen with scroll containment, filtering by visible levels and search text
- HistoryControls: vertical sidebar with search, method filter, export, and clear
- HistoryListPanel: extracted from HistoryScreen with ListToggle compact mode, filtering by method and search text

Badge contrast improvements:
- AnnotationBadge: filled variant for both dark/light modes; black text in dark, white text in light
- LogLevelBadge: same contrast approach; bold weight for alert/emergency levels
- Badge theme default weight reduced from 700 to 600

Typography:
- Added Fredoka (300-700) as body and heading font
- Added Roboto Mono as monospace font
- Google Fonts loaded in index.html and Storybook previewHead
- Heading weight set to 600

Screen layout refactors:
- LoggingScreen: owns filterText and visibleLevels state; passes to LogControls and LogStreamPanel; removed controls prop in favor of flat props
- HistoryScreen: owns searchText and methodFilter state; passes to HistoryControls and HistoryListPanel for filtering
- Both screens use new ScreenLayout (Flex variant="screen") and Sidebar subcomponents
- Added Flex theme with "screen" variant (overflow: hidden)
- Added Paper theme "panel" variant (flex column, overflow hidden)

Component enhancements:
- ServerCard: added compact prop showing only header row
- HistoryEntry: renamed isExpanded to isListExpanded; internal useState syncs via useEffect; individual entries toggle independently
- LogControls: Select All / Deselect All toggle for level checkboxes; nowrap on level selector group
- ConnectionToggle: LoadingOverlay with rounded corners for connecting state
- ConnectedView: ThemeToggle ActionIcon matched to DisconnectButton height (36px) and border color (outline variant)
- Storybook preview: fullscreen layout wrapper with 100vh overflow hidden

New stories:
- UnconnectedView: Connecting and ManyServers (12 servers for scroll testing)
- ServerCard: CompactConnected and CompactDisconnected
- All new components have corresponding stories

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

clients/web/src/components/elements/LogEntry/LogEntry.tsx

@@ -1,4 +1,5 @@
-import { Badge, Group, Text } from "@mantine/core";
+import { Group, Text } from "@mantine/core";
+import { LogLevelBadge } from "../LogLevelBadge/LogLevelBadge";
 
 export type LogLevel =
   | "debug"
@@ -17,28 +18,6 @@ export interface LogEntryProps {
   logger?: string;
 }
 
-const levelBadgeColor: Record<LogLevel, string> = {
-  debug: "gray",
-  info: "blue",
-  notice: "teal",
-  warning: "yellow",
-  error: "red",
-  critical: "red",
-  alert: "red",
-  emergency: "red",
-};
-
-const levelBadgeVariant: Record<LogLevel, string> = {
-  debug: "light",
-  info: "light",
-  notice: "light",
-  warning: "light",
-  error: "light",
-  critical: "filled",
-  alert: "filled",
-  emergency: "filled",
-};
-
 const levelMessageColor: Record<LogLevel, string | undefined> = {
   debug: "dimmed",
   info: "blue",
@@ -50,14 +29,6 @@ const levelMessageColor: Record<LogLevel, string | undefined> = {
   emergency: "red",
 };
 
-function isBoldLevel(level: LogLevel): boolean {
-  return level === "alert" || level === "emergency";
-}
-
-function getBoldWeight(level: LogLevel): number | undefined {
-  return isBoldLevel(level) ? 700 : undefined;
-}
-
 function formatLogger(logger: string): string {
   return `[${logger}]`;
 }
@@ -70,6 +41,7 @@ const TimestampText = Text.withProps({
 
 const LoggerText = Text.withProps({
   size: "xs",
+  ff: "monospace",
   c: "dimmed",
 });
 
@@ -77,15 +49,9 @@ export function LogEntry({ timestamp, level, message, logger }: LogEntryProps) {
   return (
     <Group gap="sm" wrap="nowrap">
       <TimestampText>{timestamp}</TimestampText>
-      <Badge
-        color={levelBadgeColor[level]}
-        variant={levelBadgeVariant[level]}
-        fw={getBoldWeight(level)}
-      >
-        {level}
-      </Badge>
+      <LogLevelBadge level={level} />
       {logger && <LoggerText>{formatLogger(logger)}</LoggerText>}
-      <Text size="sm" c={levelMessageColor[level]}>
+      <Text size="sm" ff="monospace" c={levelMessageColor[level]}>
         {message}
       </Text>
     </Group>