feat(security): migrate content scanning and bounce detection to Rust security bridge; add scanContent IPC command and Rust content scanner with tests; update TS RustSecurityBridge and callers, and adjust CI package references

test/test.bouncemanager.ts

@@ -1,6 +1,13 @@
 import { tap, expect } from '@git.zone/tstest/tapbundle';
 import { BounceManager, BounceType, BounceCategory } from '../ts/mail/core/classes.bouncemanager.js';
 import { Email } from '../ts/mail/core/classes.email.js';
+import { RustSecurityBridge } from '../ts/security/classes.rustsecuritybridge.js';
+
+tap.test('setup - start Rust security bridge', async () => {
+  const bridge = RustSecurityBridge.getInstance();
+  const ok = await bridge.start();
+  expect(ok).toEqual(true);
+});
 
 /**
  * Test the BounceManager class
@@ -189,6 +196,10 @@ tap.test('BounceManager - should handle retries for soft bounces', async () => {
   expect(info.expiresAt).toBeUndefined(); // Permanent
 });
 
+tap.test('cleanup - stop Rust security bridge', async () => {
+  await RustSecurityBridge.getInstance().stop();
+});
+
 tap.test('stop', async () => {
   await tap.stopForcefully();
 });