refactor: restructure project layout

- Move main process to electron/main/
- Move preload to electron/preload/
- Add shared types in electron/shared/
- Split redis-service into modular redis/ directory
- Flatten renderer to src/ (remove src/renderer/ nesting)
- Update electron.vite.config.ts paths
- Update tsconfig paths
- Output to electron-dist/

electron/main/redis/set.ts

@@ -0,0 +1,27 @@
+// src/main/redis/set.ts
+// Set 操作
+import { getClient } from './connection'
+
+export async function setMembers(id: string, key: string): Promise<string[]> {
+  const client = getClient(id)
+  if (!client) throw new Error(`Client ${id} not found`)
+  return client.smembers(key)
+}
+
+export async function setSize(id: string, key: string): Promise<number> {
+  const client = getClient(id)
+  if (!client) throw new Error(`Client ${id} not found`)
+  return client.scard(key)
+}
+
+export async function setAdd(id: string, key: string, ...members: string[]): Promise<number> {
+  const client = getClient(id)
+  if (!client) throw new Error(`Client ${id} not found`)
+  return client.sadd(key, ...members)
+}
+
+export async function setRemove(id: string, key: string, ...members: string[]): Promise<number> {
+  const client = getClient(id)
+  if (!client) throw new Error(`Client ${id} not found`)
+  return client.srem(key, ...members)
+}