Refactor multi-flow mail capability boundaries

flows/openai/mail-rules.js

@@ -3,6 +3,42 @@
 })(typeof self !== 'undefined' ? self : globalThis, function createOpenAiMailRulesModule() {
   const SIGNUP_CODE_RULE_ID = 'openai-signup-code';
   const LOGIN_CODE_RULE_ID = 'openai-login-code';
+  const OPENAI_CODE_PATTERNS = Object.freeze([
+    Object.freeze({
+      source: '(?:chatgpt\\s+log-?in\\s+code|enter\\s+this\\s+code)[^0-9]{0,24}(\\d{6})',
+      flags: 'i',
+    }),
+    Object.freeze({
+      source: 'your\\s+chatgpt\\s+code\\s+is\\s+(\\d{6})',
+      flags: 'i',
+    }),
+    Object.freeze({
+      source: '(?:verification\\s+code|temporary\\s+verification\\s+code|your\\s+chatgpt\\s+code|code(?:\\s+is)?)[^0-9]{0,16}(\\d{6})',
+      flags: 'i',
+    }),
+  ]);
+  const OPENAI_REQUIRED_KEYWORDS = Object.freeze([
+    'openai',
+    'chatgpt',
+    'verify',
+    'verification',
+    'confirm',
+    '验证码',
+    '代码',
+  ]);
+
+  function buildTargetEmailHints(targetEmail = '') {
+    const normalizedTarget = String(targetEmail || '').trim().toLowerCase();
+    if (!normalizedTarget) {
+      return [];
+    }
+    const hints = [normalizedTarget];
+    const atIndex = normalizedTarget.indexOf('@');
+    if (atIndex > 0) {
+      hints.push(`${normalizedTarget.slice(0, atIndex)}=${normalizedTarget.slice(atIndex + 1)}`);
+    }
+    return [...new Set(hints)];
+  }
 
   function createOpenAiMailRules(deps = {}) {
     const {
@@ -24,24 +60,30 @@
       const normalizedStep = Number(step) === 4 ? 4 : 8;
       const mail2925Provider = isMail2925Provider(state);
       const signupStep = normalizedStep === 4;
+      const targetEmail = signupStep
+        ? state?.email
+        : (String(state?.step8VerificationTargetEmail || '').trim() || state?.email);
 
       return {
         flowId: 'openai',
         ruleId: signupStep ? SIGNUP_CODE_RULE_ID : LOGIN_CODE_RULE_ID,
         step: normalizedStep,
         artifactType: 'code',
+        codePatterns: OPENAI_CODE_PATTERNS,
         filterAfterTimestamp: mail2925Provider
           ? 0
           : getHotmailVerificationRequestTimestamp(normalizedStep, state),
+        requiredKeywords: signupStep
+          ? OPENAI_REQUIRED_KEYWORDS
+          : [...OPENAI_REQUIRED_KEYWORDS, 'login'],
         senderFilters: signupStep
           ? ['openai', 'noreply', 'verify', 'auth', 'duckduckgo', 'forward']
           : ['openai', 'noreply', 'verify', 'auth', 'chatgpt', 'duckduckgo', 'forward'],
         subjectFilters: signupStep
           ? ['verify', 'verification', 'code', '验证码', 'confirm']
           : ['verify', 'verification', 'code', '验证码', 'confirm', 'login'],
-        targetEmail: signupStep
-          ? state?.email
-          : (String(state?.step8VerificationTargetEmail || '').trim() || state?.email),
+        targetEmail,
+        targetEmailHints: buildTargetEmailHints(targetEmail),
         mail2925MatchTargetEmail: shouldMatchMail2925TargetEmail(state),
         maxAttempts: mail2925Provider ? MAIL_2925_VERIFICATION_MAX_ATTEMPTS : 5,
         intervalMs: mail2925Provider ? MAIL_2925_VERIFICATION_INTERVAL_MS : 3000,