WebUI Architecture Cleanup (#19541)

* webui: architecture foundation (non-MCP core refactors)

* chore: update webui build output

tools/server/webui/src/lib/enums/chat.ts

@@ -1,4 +1,51 @@
 export enum ChatMessageStatsView {
 	GENERATION = 'generation',
-	READING = 'reading'
+	READING = 'reading',
+	TOOLS = 'tools',
+	SUMMARY = 'summary'
+}
+
+/**
+ * Reasoning format options for API requests.
+ */
+export enum ReasoningFormat {
+	NONE = 'none',
+	AUTO = 'auto'
+}
+
+/**
+ * Message roles for chat messages.
+ */
+export enum MessageRole {
+	USER = 'user',
+	ASSISTANT = 'assistant',
+	SYSTEM = 'system',
+	TOOL = 'tool'
+}
+
+/**
+ * Message types for different content kinds.
+ */
+export enum MessageType {
+	ROOT = 'root',
+	TEXT = 'text',
+	THINK = 'think',
+	SYSTEM = 'system'
+}
+
+/**
+ * Content part types for API chat message content.
+ */
+export enum ContentPartType {
+	TEXT = 'text',
+	IMAGE_URL = 'image_url',
+	INPUT_AUDIO = 'input_audio'
+}
+
+/**
+ * Error dialog types for displaying server/timeout errors.
+ */
+export enum ErrorDialogType {
+	TIMEOUT = 'timeout',
+	SERVER = 'server'
 }

tools/server/webui/src/lib/enums/keyboard.ts

@@ -0,0 +1,15 @@
+/**
+ * Keyboard key names for event handling
+ */
+export enum KeyboardKey {
+	ENTER = 'Enter',
+	ESCAPE = 'Escape',
+	ARROW_UP = 'ArrowUp',
+	ARROW_DOWN = 'ArrowDown',
+	TAB = 'Tab',
+	D_LOWER = 'd',
+	D_UPPER = 'D',
+	E_UPPER = 'E',
+	K_LOWER = 'k',
+	O_UPPER = 'O'
+}

tools/server/webui/src/lib/enums/settings.ts

@@ -0,0 +1,26 @@
+/**
+ * Parameter source - indicates whether a parameter uses default or custom value
+ */
+export enum ParameterSource {
+	DEFAULT = 'default',
+	CUSTOM = 'custom'
+}
+
+/**
+ * Syncable parameter type - data types for parameters that can be synced with server
+ */
+export enum SyncableParameterType {
+	NUMBER = 'number',
+	STRING = 'string',
+	BOOLEAN = 'boolean'
+}
+
+/**
+ * Settings field type - defines the input type for settings fields
+ */
+export enum SettingsFieldType {
+	INPUT = 'input',
+	TEXTAREA = 'textarea',
+	CHECKBOX = 'checkbox',
+	SELECT = 'select'
+}