Refactor multi-flow mail capability boundaries

tests/background-hotmail-local-helper-rule-forwarding.test.js

@@ -0,0 +1,28 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+
+test('background forwards mail rule metadata to Hotmail helper and shared picker paths', () => {
+  const source = fs.readFileSync('background.js', 'utf8');
+
+  assert.match(
+    source,
+    /requiredKeywords:\s*pollPayload\.requiredKeywords\s*\|\|\s*\[\]/,
+    'Hotmail helper 请求体应转发 requiredKeywords'
+  );
+  assert.match(
+    source,
+    /codePatterns:\s*pollPayload\.codePatterns\s*\|\|\s*\[\]/,
+    'Hotmail helper 请求体应转发 codePatterns'
+  );
+  assert.match(
+    source,
+    /pickVerificationMessageWithTimeFallback\(fetchResult\.messages,\s*\{[\s\S]*requiredKeywords:\s*pollPayload\.requiredKeywords\s*\|\|\s*\[\],[\s\S]*codePatterns:\s*pollPayload\.codePatterns\s*\|\|\s*\[\]/,
+    'Hotmail API 轮询应把 rule metadata 传给共享验证码筛选器'
+  );
+  assert.match(
+    source,
+    /pickVerificationMessageWithTimeFallback\(messages,\s*\{[\s\S]*requiredKeywords:\s*pollPayload\.requiredKeywords\s*\|\|\s*\[\],[\s\S]*codePatterns:\s*pollPayload\.codePatterns\s*\|\|\s*\[\]/,
+    'Cloudflare Temp Email 轮询也应复用同一套 rule metadata'
+  );
+});