electrobun-rpc

# Electrobun RPC System Type-safe bidirectional communication between the Bun process and webview renderers. Uses WebSockets for transport with AES-GCM encryption. Two call types: `requests` (expects a response) and `messages` (fire-and-forget). ## Schema Definition (shared type) Define the schema in a shared file both sides import: ```typescript // src/shared/rpc-schema.ts import type { ElectrobunRPCSchema, RPCSchema } from "electrobun/view"; // bun: what the BUN process handles (requests from renderer, messages from renderer) // webview: what the WEBVIEW handles (requests from bun, messages from bun) export type AppRPC = { bun: RPCSchema<{ requests: { getNotes: { args: {}; response: Note[] }; saveNote: { args: { id: string; title: string; content: string }; response: { success: boolean } }; deleteNote: { args: { id: string }; response: void }; }; messages: { userIdleDetected: {}; }; }>; webview: RPCSchema<{ requests: { getSelectedText: { args: {}; response: string }; }; messages: { menuAction: { action: string; role?: string }; noteUpdatedExternally: { id: string }; }; }>; } & ElectrobunRPCSchema; ``` ## Bun Side — BrowserView.defineRPC ```typescript import { BrowserView } from "electrobun/bun"; import type { AppRPC } from "../shared/rpc-schema"; const appRPC = BrowserView.defineRPC<AppRPC>({ maxRequestTime: 10000, // ms — set higher for file dialogs, heavy DB ops handlers: { r...