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/groups/ToolControls/ToolControls.stories.tsx

@@ -0,0 +1,70 @@
+import type { Meta, StoryObj } from "@storybook/react-vite";
+import { fn } from "storybook/test";
+import { ToolControls } from "./ToolControls";
+
+const meta: Meta<typeof ToolControls> = {
+  title: "Groups/ToolControls",
+  component: ToolControls,
+  args: {
+    searchText: "",
+    onSearchChange: fn(),
+    onRefreshList: fn(),
+    onSelectTool: fn(),
+    listChanged: false,
+  },
+};
+
+export default meta;
+type Story = StoryObj<typeof ToolControls>;
+
+const sampleTools = [
+  {
+    name: "send_message",
+    title: "Send Message",
+    selected: false,
+    onClick: fn(),
+  },
+  {
+    name: "create_record",
+    title: "Create Record",
+    selected: false,
+    onClick: fn(),
+  },
+  { name: "delete_records", selected: false, onClick: fn() },
+  { name: "list_users", selected: false, onClick: fn() },
+  { name: "batch_process", selected: false, onClick: fn() },
+];
+
+export const Default: Story = {
+  args: {
+    tools: sampleTools,
+  },
+};
+
+export const WithSelection: Story = {
+  args: {
+    tools: sampleTools.map((t) =>
+      t.name === "create_record" ? { ...t, selected: true } : t,
+    ),
+  },
+};
+
+export const WithSearch: Story = {
+  args: {
+    tools: sampleTools,
+    searchText: "send",
+  },
+};
+
+export const ListChanged: Story = {
+  args: {
+    tools: sampleTools,
+    listChanged: true,
+  },
+};
+
+export const Empty: Story = {
+  args: {
+    tools: [],
+  },
+};