refactor: split main process bootstrap flow

src/main/bootstrap/process-guards.ts

@@ -0,0 +1,40 @@
+import { app } from 'electron'
+import logger from '../services/logger/index'
+import { logAudit } from '../services/logger/audit-logger'
+
+export function setupProcessGuards(): void {
+  process.on('uncaughtException', async (err) => {
+    logger.error('Uncaught exception', { error: err })
+    await logAudit('SYSTEM_CRASH', 'system', {
+      username: 'system',
+      computerName: process.env.COMPUTERNAME || 'unknown',
+      resource: 'main-process',
+      status: 'failure',
+      metadata: { error: err.message, stack: err.stack }
+    })
+    console.error('Uncaught exception:', err)
+    setTimeout(() => process.exit(1), 1000)
+  })
+
+  process.on('unhandledRejection', async (reason) => {
+    logger.error('Unhandled Rejection', { reason: String(reason) })
+    await logAudit('SYSTEM_ERROR', 'system', {
+      username: 'system',
+      computerName: process.env.COMPUTERNAME || 'unknown',
+      resource: 'main-process',
+      status: 'failure',
+      metadata: { reason: String(reason) }
+    })
+    console.error('Unhandled Rejection:', reason)
+  })
+
+  app.on('render-process-gone', (_, webContents, details) => {
+    logger.error('Render process gone', { details, webContentsId: webContents.id })
+    console.error('Render process gone:', details)
+  })
+
+  app.on('child-process-gone', (_, details) => {
+    logger.error('Child process gone', { details })
+    console.error('Child process gone:', details)
+  })
+}