ui: Agentic Content UX improvements (#25450)

* feat: Add shimmer text animation for processing state indicators

* feat: Redesign CollapsibleContentBlock component with improved UX

* feat: Add conditional setting display support with dependsOn field

* feat: Add showAgenticTurnStats setting for per-turn statistics

* feat: Update ChatMessageAgenticContent with improved UI and new features

* feat: Enhance file read tool UI/UX

* feat: Refine styling of collapsible content and code preview blocks

* feat: add terminal variant to CollapsibleContentBlock

* feat: add built-in tools UI registry

* feat: extract ChatMessageReasoningBlock and ChatMessageToolCallBlock

* refactor: simplify ChatMessageAgenticContent to use extracted blocks

* fix: correct markdown content block margin spacing

* fix: reorganize SettingsChatFields layout and reset button positioning

* fix: use direct map access in agentic store session methods

* refactor: remove reasoning preview/throttle system from CollapsibleContentBlock

* feat: add auto-scroll to reasoning block and remove showThoughtInProgress

* feat: add ChatMessageToolCallDateTime component and support for new tool types

* feat: improve auto-scroll reliability in reasoning block with RAF coalescing and MutationObserver

* feat: show MCP server favicon for tools without a built-in icon

* feat: add search-results parsing utilities and tests

* feat: add ChatMessageToolCallSearchResults component

* feat: integrate search results rendering into ChatMessageAgenticContent

* feat: display tool call input alongside output in ChatMessageToolCallBlock

* style: use muted foreground color in reasoning block content

* chore: Format

* feat: Refine reasoning block layout and make pending thoughts display configurable

* feat: Stream tool call code blocks with auto-scroll and handle partial JSON

* feat: add streaming permission gate infrastructure

* feat: wire permission gate into the agentic loop

* fix: bail out on abort and skip already-approved tool calls

* fix: clear partial tool calls on abort and savePartialResponse

* test: cover partial tool call cleanup end-to-end

* refactor: Remove streaming permission gate logic

* fix: Correct autoscroll and streaming gates for tool calls and reasoning blocks

* refactor: Chat Message Assistant componentization

* fix: Show health metadata for disabled MCP servers and promote connections on enable

* fix: Inherit global enabled state for missing MCP per-chat overrides

* refactor: Cleanup

* refactor: Split ChatMessageToolCallBlock into dedicated components

* feat: Add live streaming and auto-scroll for tool execution output

* feat: Add line numbers and change markers to file edit diffs

* chore: Formatting

* feat: Add type definitions and utilities for recommended MCP servers

* feat: Add recommended MCP servers configuration and storage key

* feat: Add McpServerCardCompact component for recommended servers

* feat: Add recommended servers section to Add New Server dialog

* feat: Update McpServerForm to support authorization requirements

* feat: Add select-none classes for text selection prevention

* feat: Add recommended MCP server icon assets

* refactor: Store dismissed MCP recommendations as a boolean flag

* feat: Render tool results as JSON or Markdown based on detected content type

* feat: UI improvement

* feat: Render search block early and update heading to show execution state

* fix: Prevent non-web-search tools from triggering the search UI block

* refactor: Cleanup

* refactor: Extract hardcoded icon size classes into shared constants

* refactor: Extract hardcoded tool result separator into a shared constant

* refactor: Tool Calls UI/logic

* refactor: Cleanup

* refactor: Cleanup

* refactor: Cleanup

tools/ui/src/lib/components/app/dialogs/DialogMcpResourcesBrowser.svelte

@@ -1,4 +1,5 @@
 <script lang="ts">
+	import { ICON_CLASS_DEFAULT } from '$lib/constants/css-classes';
 	import { FolderOpen, Plus, Loader2, Braces } from '@lucide/svelte';
 	import { toast } from 'svelte-sonner';
 	import * as Dialog from '$lib/components/ui/dialog';
@@ -289,7 +290,7 @@
 				{#if selectedTemplate && !templatePreviewContent}
 					<div class="flex h-full flex-col">
 						<div class="mb-3 flex items-center gap-2">
-							<Braces class="h-4 w-4 text-muted-foreground" />
+							<Braces class="{ICON_CLASS_DEFAULT} text-muted-foreground" />
 
 							<span class="text-sm font-medium">
 								{selectedTemplate.title || selectedTemplate.name}
@@ -371,9 +372,9 @@
 			{#if hasTemplateResult}
 				<Button onclick={handleAttachTemplateResource} disabled={isAttaching}>
 					{#if isAttaching}
-						<Loader2 class="mr-2 h-4 w-4 animate-spin" />
+						<Loader2 class="mr-2 {ICON_CLASS_DEFAULT} animate-spin" />
 					{:else}
-						<Plus class="mr-2 h-4 w-4" />
+						<Plus class="mr-2 {ICON_CLASS_DEFAULT}" />
 					{/if}
 
 					Attach Resource
@@ -381,9 +382,9 @@
 			{:else}
 				<Button onclick={handleAttach} disabled={selectedResources.size === 0 || isAttaching}>
 					{#if isAttaching}
-						<Loader2 class="mr-2 h-4 w-4 animate-spin" />
+						<Loader2 class="mr-2 {ICON_CLASS_DEFAULT} animate-spin" />
 					{:else}
-						<Plus class="mr-2 h-4 w-4" />
+						<Plus class="mr-2 {ICON_CLASS_DEFAULT}" />
 					{/if}
 
 					Attach {selectedResources.size > 0 ? `(${selectedResources.size})` : 'Resource'}