feat: scaffold electron orchestrator foundation

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/preload/index.ts

@@ -0,0 +1,33 @@
+import { contextBridge, ipcRenderer } from 'electron';
+
+import { ipcChannels } from '@shared/contracts/channels';
+import type { ElectronApi } from '@shared/contracts/ipc';
+
+const api: ElectronApi = {
+  loadWorkspace: () => ipcRenderer.invoke(ipcChannels.loadWorkspace),
+  addProject: () => ipcRenderer.invoke(ipcChannels.addProject),
+  removeProject: (projectId) => ipcRenderer.invoke(ipcChannels.removeProject, projectId),
+  savePattern: (input) => ipcRenderer.invoke(ipcChannels.savePattern, input),
+  deletePattern: (patternId) => ipcRenderer.invoke(ipcChannels.deletePattern, patternId),
+  createSession: (input) => ipcRenderer.invoke(ipcChannels.createSession, input),
+  sendSessionMessage: (input) => ipcRenderer.invoke(ipcChannels.sendSessionMessage, input),
+  selectProject: (projectId) => ipcRenderer.invoke(ipcChannels.selectProject, projectId),
+  selectPattern: (patternId) => ipcRenderer.invoke(ipcChannels.selectPattern, patternId),
+  selectSession: (sessionId) => ipcRenderer.invoke(ipcChannels.selectSession, sessionId),
+  onWorkspaceUpdated: (listener) => {
+    const handler = (_event: Electron.IpcRendererEvent, workspace: Awaited<ReturnType<ElectronApi['loadWorkspace']>>) =>
+      listener(workspace);
+
+    ipcRenderer.on(ipcChannels.workspaceUpdated, handler);
+    return () => ipcRenderer.off(ipcChannels.workspaceUpdated, handler);
+  },
+  onSessionEvent: (listener) => {
+    const handler = (_event: Electron.IpcRendererEvent, sessionEvent: Parameters<typeof listener>[0]) =>
+      listener(sessionEvent);
+
+    ipcRenderer.on(ipcChannels.sessionEvent, handler);
+    return () => ipcRenderer.off(ipcChannels.sessionEvent, handler);
+  },
+};
+
+contextBridge.exposeInMainWorld('kopayaApi', api);