feat: add file reading functionality and integrate system agents

- Introduced FileService to handle file reading operations via IPC.
- Implemented a new IPC handler for reading files, enhancing the application's ability to access and manage data.
- Integrated system agents from a JSON file, allowing dynamic loading of agent data into the application.
- Updated the AgentsPage and AddAssistantPopup components to utilize the new system agents, improving user experience and functionality.
- Enhanced application state management by adding resourcesPath to the runtime state, ensuring proper resource handling across components.

src/preload/index.d.ts

@@ -56,6 +56,9 @@ declare global {
         copy: (fileId: string, destPath: string) => Promise<void>
         binaryFile: (fileId: string) => Promise<{ data: Buffer; mime: string }>
       }
+      fs: {
+        read: (path: string) => Promise<string>
+      }
       export: {
         toWord: (markdown: string, fileName: string) => Promise<void>
       }

src/preload/index.ts

@@ -47,6 +47,9 @@ const api = {
     copy: (fileId: string, destPath: string) => ipcRenderer.invoke('file:copy', fileId, destPath),
     binaryFile: (fileId: string) => ipcRenderer.invoke('file:binaryFile', fileId)
   },
+  fs: {
+    read: (path: string) => ipcRenderer.invoke('fs:read', path)
+  },
   export: {
     toWord: (markdown: string, fileName: string) => ipcRenderer.invoke('export:word', markdown, fileName)
   },