fix: restore full typecheck stability

src/main/ipc/auth-handler.ts

@@ -15,6 +15,13 @@ import { SessionManager } from '../services/user/session-manager'
 import { createLogger } from '../services/logger'
 import { logAudit } from '../services/logger/audit-logger'
 import type { UserInfo } from '../types/user.types'
+import type {
+  CurrentUserResponse,
+  LoginRequest,
+  LoginResponse,
+  SilentLoginResponse,
+  UserSelectionResponse
+} from '../types/auth-ipc.types'
 import { IPC_CHANNELS } from '../../shared/ipc-channels'
 import { ValidationError } from '../types/errors'
 import { withErrorHandling, type IpcResult } from './index'
@@ -22,50 +29,6 @@ import { UpdateService } from '../services/update/update-service'
 
 const log = createLogger('AuthHandler')
 
-/**
- * Login request
- */
-export interface LoginRequest {
-  username: string
-  password: string
-}
-
-/**
- * Login response
- */
-export interface LoginResponse {
-  success: boolean
-  userInfo?: UserInfo
-  error?: string
-}
-
-/**
- * Silent login response
- */
-export interface SilentLoginResponse {
-  success: boolean
-  userInfo?: UserInfo
-  requiresUserSelection?: boolean // True if admin needs to select a user
-  error?: string
-}
-
-/**
- * User selection response
- */
-export interface UserSelectionResponse {
-  success: boolean
-  userInfo?: UserInfo
-  error?: string
-}
-
-/**
- * Current user response
- */
-export interface CurrentUserResponse {
-  isAuthenticated: boolean
-  userInfo?: UserInfo
-}
-
 /**
  * Register IPC handlers for user authentication
  */

src/main/ipc/index.ts

@@ -19,19 +19,12 @@ import { registerUpdateHandlers } from './update-handler'
 import { createLogger, logError } from '../services/logger'
 import { serializeError, sanitizeError } from '../services/logger/error-utils'
 import { getErrorMessage, getErrorCode, isBaseError } from '../types/errors'
+import type { IpcResult } from '../types/ipc.types'
+
+export type { IpcResult } from '../types/ipc.types'
 
 const log = createLogger('IPC')
 
-/**
- * Standard result type for all IPC handlers
- */
-export interface IpcResult<T = unknown> {
-  success: boolean
-  data?: T
-  error?: string
-  code?: string
-}
-
 export function ok<T>(data: T): IpcResult<T> {
   return { success: true, data }
 }

src/main/ipc/resolver-handler.ts

@@ -10,38 +10,12 @@ import { ipcMain } from 'electron'
 import { create, type IDatabaseService } from '../services/database'
 import { OrderNumberResolver } from '../services/erp/order-resolver'
 import { createLogger } from '../services/logger'
-import type { OrderMapping, ResolutionStats } from '../services/erp/order-resolver'
+import type { ResolverInput, ResolverResponse } from '../types/resolver-ipc.types'
 import { IPC_CHANNELS } from '../../shared/ipc-channels'
 import { withErrorHandling, type IpcResult } from './index'
 
 const log = createLogger('ResolverHandler')
 
-/**
- * Resolver input from renderer
- */
-export interface ResolverInput {
-  /** List of order numbers/productionIDs to resolve */
-  inputs: string[]
-}
-
-/**
- * Resolver response to renderer
- */
-export interface ResolverResponse {
-  /** Whether the resolution was successful */
-  success: boolean
-  /** Resolved order mappings */
-  mappings?: OrderMapping[]
-  /** Valid production order numbers ready for use */
-  validOrderNumbers?: string[]
-  /** Warning messages for invalid inputs */
-  warnings?: string[]
-  /** Resolution statistics */
-  stats?: ResolutionStats
-  /** Error message if failed */
-  error?: string
-}
-
 /**
  * Register IPC handlers for order number resolver
  */