Normalize screen layouts: extract control groups, unify sidebar widths, and refactor PromptsScreen

- Extract ToolControls group from ToolsScreen (search, list, list-changed indicator)
- Extract PromptControls and PromptListItem groups for PromptsScreen sidebar
- Refactor PromptsScreen to sidebar + detail layout (matching ResourcesScreen pattern)
- Refactor PromptArgumentsForm to accept a single prompt instead of a dropdown
- Normalize all screen sidebar widths to 340px (Tools, Resources, Prompts, Logs, Tasks, History)
- Convert ToolsScreen from Grid-only to sidebar + Grid layout
- Replace LogControls checkboxes with full-width toggle buttons
- Move Clear/Export buttons from LogControls to LogStreamPanel toolbar
- Make PromptArgumentsForm "Get Prompt" button right-aligned and compact
- Update all affected stories and ConnectedView

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

clients/web/src/components/screens/LoggingScreen/LoggingScreen.tsx

@@ -34,7 +34,7 @@ const ScreenLayout = Flex.withProps({
 });
 
 const Sidebar = Stack.withProps({
-  w: 280,
+  w: 340,
   flex: "0 0 auto",
 });
 
@@ -82,8 +82,6 @@ export function LoggingScreen({
             onFilterChange={setFilterText}
             onToggleLevel={handleToggleLevel}
             onToggleAllLevels={handleToggleAllLevels}
-            onClear={onClear}
-            onExport={onExport}
           />
         </SidebarCard>
       </Sidebar>
@@ -94,6 +92,8 @@ export function LoggingScreen({
         autoScroll={autoScroll}
         onToggleAutoScroll={onToggleAutoScroll}
         onCopyAll={onCopyAll}
+        onClear={onClear}
+        onExport={onExport}
       />
     </ScreenLayout>
   );