feat: enhance after-pack script to copy OpenClaw runtime dependencies

- Added a new script `bundle-openclaw.mjs` to bundle OpenClaw runtime dependencies.
- Updated `after-pack.cjs` to copy bundled OpenClaw runtime and its node_modules.
- Improved cleanup of unnecessary development files in node_modules.
- Adjusted paths for resources in the packaging process.

style: update loading indicator styles in ChatHistoryPanel

- Changed the border radius and padding for the loading indicator in ChatHistoryPanel.

fix: improve ProvidersSection to handle provider account syncing

- Added logic to sync model configuration to provider accounts.
- Introduced error handling and loading states during the sync process.
- Enhanced vendor resolution and account management logic.

fix: fallback session handling in chat store

- Implemented fallback session logic in loadSessions to ensure a valid session is always available on error.

src/components/chat/ChatHistoryPanel.tsx

@@ -163,7 +163,7 @@ function ChatHistoryPanel({
 
         <div className="min-h-0 flex-1 overflow-y-auto pt-4">
           {loading ? (
-            <div className="flex flex-col items-center justify-center gap-3 rounded-[18px] border border-dashed border-[#dbe7f4] bg-white px-4 py-8 text-sm text-[#94a3b8] shadow-[0_4px_14px_rgba(15,23,42,0.04)] dark:border-[#2a2a2d] dark:bg-[#202024] dark:text-gray-400">
+            <div className="flex flex-col items-center justify-center gap-3 rounded-lg border border-dashed border-[#dbe7f4] bg-white p-4 text-sm text-[#94a3b8] shadow-[0_4px_14px_rgba(15,23,42,0.04)] dark:border-[#2a2a2d] dark:bg-[#202024] dark:text-gray-400">
               <LoaderCircle className="h-5 w-5 animate-spin text-[#8bb7ff]" />
               {t('conversation.historyPanel.loading')}
             </div>