feat(agent):Supports custom agent and chat experience with refactoring (#957)

* feat: add agent management functionality with creation, editing, and deletion

* feat: enhance agent creation and chat experience

- Added AgentWelcome component to display agent description on new thread creation.
- Improved agent name validation with availability check during agent creation.
- Updated NewAgentPage to handle agent creation flow more effectively, including enhanced error handling and user feedback.
- Refactored chat components to streamline message handling and improve user experience.
- Introduced new bootstrap skill for personalized onboarding conversations, including detailed conversation phases and a structured SOUL.md template.
- Updated localization files to reflect new features and error messages.
- General code cleanup and optimizations across various components and hooks.

* Refactor workspace layout and agent management components

- Updated WorkspaceLayout to use useLayoutEffect for sidebar state initialization.
- Removed unused AgentFormDialog and related edit functionality from AgentCard.
- Introduced ArtifactTrigger component to manage artifact visibility.
- Enhanced ChatBox to handle artifact selection and display.
- Improved message list rendering logic to avoid loading states.
- Updated localization files to remove deprecated keys and add new translations.
- Refined hooks for local settings and thread management to improve performance and clarity.
- Added temporal awareness guidelines to deep research skill documentation.

* feat: refactor chat components and introduce thread management hooks

* feat: improve artifact file detail preview logic and clean up console logs

* feat: refactor lead agent creation logic and improve logging details

* feat: validate agent name format and enhance error handling in agent setup

* feat: simplify thread search query by removing unnecessary metadata

* feat: update query key in useDeleteThread and useRenameThread for consistency

* feat: add isMock parameter to thread and artifact handling for improved testing

* fix: reorder import of setup_agent for consistency in builtins module

* feat: append mock parameter to thread links in CaseStudySection for testing purposes

* fix: update load_agent_soul calls to use cfg.name for improved clarity

* fix: update date format in apply_prompt_template for consistency

* feat: integrate isMock parameter into artifact content loading for enhanced testing

* docs: add license section to SKILL.md for clarity and attribution

* feat(agent): enhance model resolution and agent configuration handling

* chore: remove unused import of _resolve_model_name from agents

* feat(agent): remove unused field

* fix(agent): set default value for requested_model_name in _resolve_model_name function

* feat(agent): update get_available_tools call to handle optional agent_config and improve middleware function signature

---------

Co-authored-by: Willem Jiang <willem.jiang@gmail.com>

frontend/src/components/workspace/thread-title.tsx

@@ -1,11 +1,45 @@
+import type { BaseStream } from "@langchain/langgraph-sdk";
+import { useEffect } from "react";
+
+import { useI18n } from "@/core/i18n/hooks";
+import type { AgentThreadState } from "@/core/threads";
+
 import { FlipDisplay } from "./flip-display";
 
 export function ThreadTitle({
-  threadTitle,
+  threadId,
+  thread,
 }: {
   className?: string;
   threadId: string;
-  threadTitle: string;
+  thread: BaseStream<AgentThreadState>;
 }) {
-  return <FlipDisplay uniqueKey={threadTitle}>{threadTitle}</FlipDisplay>;
+  const { t } = useI18n();
+  useEffect(() => {
+    const pageTitle = !thread.values
+      ? t.pages.newChat
+      : thread.values?.title && thread.values.title !== "Untitled"
+        ? thread.values.title
+        : t.pages.untitled;
+    if (thread.isThreadLoading) {
+      document.title = `Loading... - ${t.pages.appName}`;
+    } else {
+      document.title = `${pageTitle} - ${t.pages.appName}`;
+    }
+  }, [
+    t.pages.newChat,
+    t.pages.untitled,
+    t.pages.appName,
+    thread.isThreadLoading,
+    thread.values,
+  ]);
+
+  if (!thread.values?.title) {
+    return null;
+  }
+  return (
+    <FlipDisplay uniqueKey={threadId}>
+      {thread.values.title ?? "Untitled"}
+    </FlipDisplay>
+  );
 }