fix(mail): split 2925 initial polling around resend

tests/background-step7-recovery.test.js

@@ -1056,7 +1056,7 @@ test('step 8 completes when polling fails but recovery probe shows oauth consent
   ]);
 });
 
-test('step 8 uses a fixed 10-minute lookback window and delays 2925 resend until after two quick polls', async () => {
+test('step 8 uses a fixed 10-minute lookback window and plans 2925 polling as 2/3/15', async () => {
   let capturedOptions = null;
   let ensureCalls = 0;
   let ensureOptions = null;
@@ -1148,8 +1148,9 @@ test('step 8 uses a fixed 10-minute lookback window and delays 2925 resend until
   ]);
   assert.equal(capturedOptions.filterAfterTimestamp, 300000);
   assert.equal(capturedOptions.resendIntervalMs, 0);
-  assert.equal(capturedOptions.maxResendRequests, 1);
-  assert.equal(capturedOptions.initialPollMaxAttempts, 2);
+  assert.equal(capturedOptions.maxResendRequests, 2);
+  assert.equal(capturedOptions.initialPollMaxAttempts, 5);
+  assert.deepStrictEqual(capturedOptions.pollAttemptPlan, [2, 3, 15]);
   assert.equal(capturedOptions.targetEmail, '');
   assert.equal(capturedOptions.beforeSubmit, undefined);
   assert.equal(typeof capturedOptions.getRemainingTimeMs, 'function');

tests/verification-flow-polling.test.js

@@ -835,7 +835,7 @@ test('verification flow keeps 2925 mailbox polling at 15 refresh attempts even w
   assert.ok(pollCall.options.timeoutMs >= 250000);
 });
 
-test('verification flow delays 2925 login resend until after the first quick mailbox poll fails', async () => {
+test('verification flow can run a 2/3/15 2925 resend polling plan', async () => {
   const events = [];
   const pollMaxAttempts = [];
   let pollCalls = 0;
@@ -873,7 +873,7 @@ test('verification flow delays 2925 login resend until after the first quick mai
       events.push('poll');
       pollMaxAttempts.push(message.payload.maxAttempts);
       pollCalls += 1;
-      return pollCalls === 1
+      return pollCalls <= 2
         ? { error: '步骤 8：邮箱轮询结束，但未获取到验证码。' }
         : { code: '654321', emailTimestamp: 123 };
     },
@@ -893,17 +893,18 @@ test('verification flow delays 2925 login resend until after the first quick mai
     },
     { provider: '2925', label: '2925 邮箱' },
     {
-      maxResendRequests: 1,
-      initialPollMaxAttempts: 2,
+      maxResendRequests: 2,
+      initialPollMaxAttempts: 5,
+      pollAttemptPlan: [2, 3, 15],
       requestFreshCodeFirst: false,
       filterAfterTimestamp: 123,
       resendIntervalMs: 0,
     }
   );
 
-  assert.deepStrictEqual(events.slice(0, 3), ['poll', 'resend', 'poll']);
-  assert.deepStrictEqual(pollMaxAttempts.slice(0, 2), [2, 15]);
-  assert.equal(events.filter((event) => event === 'resend').length, 1);
+  assert.deepStrictEqual(events.slice(0, 5), ['poll', 'resend', 'poll', 'resend', 'poll']);
+  assert.deepStrictEqual(pollMaxAttempts.slice(0, 3), [2, 3, 15]);
+  assert.equal(events.filter((event) => event === 'resend').length, 2);
 });
 
 test('verification flow uses full 2925 polling window after a rejected login code', async () => {
@@ -969,7 +970,8 @@ test('verification flow uses full 2925 polling window after a rejected login cod
     { provider: '2925', label: '2925 邮箱' },
     {
       maxResendRequests: 0,
-      initialPollMaxAttempts: 2,
+      initialPollMaxAttempts: 5,
+      pollAttemptPlan: [2, 3, 15],
       requestFreshCodeFirst: false,
       filterAfterTimestamp: 123,
       resendIntervalMs: 0,