refactor(contracts): compose DesktopApi from per-domain sub-interfaces

Split the flat 134-method DesktopApi interface into 12 domain
sub-interfaces (companies, agents, tasks, runs, approvals,
communication, threads, credentials, skills, budget, automation,
window) under src/shared/contracts/desktop-api/. desktop-api.ts
now intersects them to preserve the exact external flat shape;
window.agentCompany consumers and preload wiring are untouched.

src/shared/contracts/desktop-api/automation.ts

@@ -0,0 +1,25 @@
+import type { z } from "zod";
+import type { BrowserActionRecord } from "../../types";
+import type { automationRuleInputSchema, toggleAutomationRuleSchema } from "../schemas-automation";
+import type { browserActionQuerySchema, cancelBrowserActionSchema, openTerminalCommandSchema, runWorkflowSchema, triggerBrowserLoginSchema, workflowInputSchema } from "../schemas-execution";
+import type { socialAccountInputSchema } from "../schemas-company";
+import type { deleteEntitySchema } from "../schemas-badges";
+import type { wakeupQuerySchema, WakeupRequestRecord } from "../schemas-wakeup";
+import type { DesktopResult } from "./common";
+
+export type AutomationApi = {
+  saveAutomationRule: (input: z.infer<typeof automationRuleInputSchema>) => Promise<DesktopResult<string>>;
+  deleteAutomationRule: (input: z.infer<typeof deleteEntitySchema>) => Promise<DesktopResult<boolean>>;
+  toggleAutomationRule: (input: z.infer<typeof toggleAutomationRuleSchema>) => Promise<DesktopResult<boolean>>;
+  getAutomationLog: (companyId: string) => Promise<DesktopResult<Array<{ ruleId: string; ruleName: string; trigger: string; action: string; executedAt: string }>>>;
+  saveWorkflow: (input: z.infer<typeof workflowInputSchema>) => Promise<DesktopResult<string>>;
+  deleteWorkflow: (input: z.infer<typeof deleteEntitySchema>) => Promise<DesktopResult<boolean>>;
+  runWorkflow: (input: z.infer<typeof runWorkflowSchema>) => Promise<DesktopResult<boolean>>;
+  listWakeupRequests: (input: z.infer<typeof wakeupQuerySchema>) => Promise<DesktopResult<WakeupRequestRecord[]>>;
+  saveSocialAccount: (input: z.infer<typeof socialAccountInputSchema>) => Promise<DesktopResult<string>>;
+  deleteSocialAccount: (input: z.infer<typeof deleteEntitySchema>) => Promise<DesktopResult<boolean>>;
+  listBrowserActions: (input: z.infer<typeof browserActionQuerySchema>) => Promise<DesktopResult<BrowserActionRecord[]>>;
+  cancelBrowserAction: (input: z.infer<typeof cancelBrowserActionSchema>) => Promise<DesktopResult<boolean>>;
+  triggerBrowserLogin: (input: z.infer<typeof triggerBrowserLoginSchema>) => Promise<DesktopResult<boolean>>;
+  openTerminalCommand: (input: z.infer<typeof openTerminalCommandSchema>) => Promise<DesktopResult<boolean>>;
+};