feat(workspace): add daily memory file management for OpenClaw

Add browse, edit, create and delete support for daily memory files
(~/.openclaw/workspace/memory/YYYY-MM-DD.md) in the Workspace panel.

src/lib/api/workspace.ts

@@ -1,5 +1,13 @@
 import { invoke } from "@tauri-apps/api/core";
 
+export interface DailyMemoryFileInfo {
+  filename: string;
+  date: string;
+  sizeBytes: number;
+  modifiedAt: number;
+  preview: string;
+}
+
 export const workspaceApi = {
   async readFile(filename: string): Promise<string | null> {
     return invoke<string | null>("read_workspace_file", { filename });
@@ -8,4 +16,20 @@ export const workspaceApi = {
   async writeFile(filename: string, content: string): Promise<void> {
     return invoke<void>("write_workspace_file", { filename, content });
   },
+
+  async listDailyMemoryFiles(): Promise<DailyMemoryFileInfo[]> {
+    return invoke<DailyMemoryFileInfo[]>("list_daily_memory_files");
+  },
+
+  async readDailyMemoryFile(filename: string): Promise<string | null> {
+    return invoke<string | null>("read_daily_memory_file", { filename });
+  },
+
+  async writeDailyMemoryFile(filename: string, content: string): Promise<void> {
+    return invoke<void>("write_daily_memory_file", { filename, content });
+  },
+
+  async deleteDailyMemoryFile(filename: string): Promise<void> {
+    return invoke<void>("delete_daily_memory_file", { filename });
+  },
 };