feat: Add Mantine theme, 12 atom components, and 25 molecule components with Storybook stories

- Mantine theme with component extensions (Badge, Card, Paper, Button, etc.)
- CSS custom properties for design tokens (--inspector-* vars)
- Dark/light mode support with auto detection
- 12 atoms: StatusIndicator, AnnotationBadge, CapabilityItem, LogEntry,
  ProgressDisplay, ContentViewer, ListChangedIndicator, CopyButton,
  ConnectionToggle, TransportBadge, InlineError, MessageBubble
- 25 molecules: ServerCard, AddServerMenu, SchemaForm, ToolListItem,
  ToolDetailPanel, ResultPanel, ResourceListItem, ResourcePreviewPanel,
  ResourceTemplateInput, PromptArgumentsForm, PromptMessagesDisplay,
  LogControls, TaskCard, HistoryEntry, ServerInfoContent, ServerSettingsForm,
  RootsTable, SamplingRequestPanel, ElicitationFormPanel, ElicitationUrlPanel,
  InlineSamplingRequest, InlineElicitationRequest, PendingClientRequests,
  ImportServerJsonPanel, ExperimentalFeaturesPanel
- Exclude storybook-static from version control
- Exclude .stories.tsx from app tsconfig (Storybook-only modules)

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

clients/web/src/components/molecules/ResultPanel/ResultPanel.tsx

@@ -0,0 +1,59 @@
+import { Button, Group, Stack, Text, Title } from '@mantine/core'
+import { ContentViewer } from '../../atoms/ContentViewer/ContentViewer'
+
+export interface ResultContentItem {
+  type: string
+  text?: string
+  data?: string
+  mimeType?: string
+}
+
+export interface ResultPanelProps {
+  content: ResultContentItem[]
+  onCopy: () => void
+  onClear: () => void
+}
+
+export function ResultPanel({ content, onCopy, onClear }: ResultPanelProps) {
+  return (
+    <Stack>
+      <Title order={4}>Results</Title>
+      {content.length === 0 ? (
+        <Text c="dimmed">No results yet</Text>
+      ) : (
+        <>
+          {content.map((item, index) => {
+            if (item.text !== undefined) {
+              return (
+                <ContentViewer
+                  key={index}
+                  type={item.type === 'text' ? 'text' : 'json'}
+                  content={item.text}
+                />
+              )
+            }
+            if (item.data !== undefined) {
+              return (
+                <ContentViewer
+                  key={index}
+                  type={item.mimeType?.startsWith('image') ? 'image' : 'audio'}
+                  content={item.data}
+                  mimeType={item.mimeType}
+                />
+              )
+            }
+            return null
+          })}
+        </>
+      )}
+      <Group>
+        <Button variant="light" size="sm" onClick={onCopy}>
+          Copy
+        </Button>
+        <Button variant="light" size="sm" onClick={onClear}>
+          Clear
+        </Button>
+      </Group>
+    </Stack>
+  )
+}