webui: Server tools (#21237)

* wip: server_tools

* feat: Integrate with `/tools` endpoint

* feat: Builtin + MCP + JSON Schema Tools WIP

* refactor

* displayName -> display_name

* snake_case everywhere

* rm redundant field

* feat: Improvements

* chore: update webui build output

* refactor: Updates after server updates

* chore: update webui build output

* change arg to --tools all

* feat: UI improvements

* chore: update webui build output

* add readme mention

* llama-gen-docs

* chore: update webui build output

* chore: update webui build output

* chore: update webui build output

* feat: Reorganize settings sections

* feat: Separate dialogs for MCP Servers Settings and Import/Export

* feat: WIP

* feat: WIP

* feat: WIP

* feat: WIP

* feat: WIP

* feat: WIP

* WIP on allozaur/20677-webui-server-tools

* feat: UI improvements

* chore: Update package lock

* chore: Run `npm audit fix`

* feat: UI WIP

* feat: UI

* refactor: Desktop Icon Strip DRY

* feat: Cleaner rendering and transition for ChatScreen

* feat: UI improvements

* feat: UI improvement

* feat: Remove MCP Server "enable" switch from Tools submenu

* chore: Run `npm audit fix`

* feat: WIP

* feat: Logic improvements

* refactor: Cleanup

* refactor: DRY

* test: Fix Chat Sidebar UI Tests

* chore: Update package lock

* refactor: Cleanup

* feat: Chat Message Action Card with Continue and Permission flow implementations

* feat: Add agentic steering messages, draft messages and improve chat UX

* fix: Search results UI

* test: Fix unit test

* feat: UI/UX improvements

* refactor: Simplify `useToolsPanel` access in components

* feat: Implement Processing Info Context API

* feat: Implement 'Go back to chat' functionality for settings

* feat: Enhance MCP Server management in Chat Form Attachments

* style: Minor UI and branding adjustments

* chore: Update webui static build output

* chore: Formatting, linting & type checks

* feat: Draft messages logic

* feat: UI improvements

* feat: Steering Messages improvements

* refactor: Cleanup

* refactor: Cleanup

* feat: Improve UI

* refactor: Settings navigation hook

* refactor: DRY code

* refactor: DRY ChatMessageUser UI components

* refactor: Desktop Icon Strip DRY

* refactor: Tools & permissions

* fix: Navigation condition

* refactor: Cleanup

* refactor: Cleanup

* refactor: Cleanup

* fix: preserve reasoning_content in agentic flow

---------

Co-authored-by: Xuan Son Nguyen <son@huggingface.co>

tools/server/webui/src/lib/components/ui/sidebar/context.svelte.ts

@@ -1,6 +1,6 @@
 import { IsMobile } from '$lib/hooks/is-mobile.svelte.js';
 import { getContext, setContext } from 'svelte';
-import { SIDEBAR_KEYBOARD_SHORTCUT } from './constants.js';
+import { SIDEBAR_KEYBOARD_SHORTCUT, SIDEBAR_MIN_WIDTH } from './constants.js';
 
 type Getter<T> = () => T;
 
@@ -24,6 +24,8 @@ class SidebarState {
 	readonly props: SidebarStateProps;
 	open = $derived.by(() => this.props.open());
 	openMobile = $state(false);
+	sidebarWidth = $state(SIDEBAR_MIN_WIDTH);
+	isResizing = $state(false);
 	setOpen: SidebarStateProps['setOpen'];
 	#isMobile: IsMobile;
 	state = $derived.by(() => (this.open ? 'expanded' : 'collapsed'));
@@ -53,7 +55,7 @@ class SidebarState {
 	};
 
 	toggle = () => {
-		return this.#isMobile.current ? (this.openMobile = !this.openMobile) : this.setOpen(!this.open);
+		this.setOpen(!this.open);
 	};
 }