feat: upgrade custom email pool with manager UI and entry states

(cherry picked from commit 3cf5f22d40a4ef563a3d06751bbb25b003d4ef1e)

tests/background-custom-email-pool.test.js

@@ -54,6 +54,7 @@ function extractFunction(name) {
 const bundle = [
   extractFunction('normalizeEmailGenerator'),
   extractFunction('normalizeCustomEmailPool'),
+  extractFunction('normalizeCustomEmailPoolEntryObjects'),
   extractFunction('getCustomEmailPool'),
   extractFunction('getCustomEmailPoolEmailForRun'),
   extractFunction('getCustomMailProviderPool'),
@@ -122,3 +123,18 @@ test('background selects the matching custom provider pool email for the current
   assert.equal(api.getCustomMailProviderPoolEmailForRun(state, 3), 'third@example.com');
   assert.equal(api.getCustomMailProviderPoolEmailForRun(state, 4), '');
 });
+
+test('background derives active custom email pool from structured entries', () => {
+  const api = createApi();
+  const state = {
+    customEmailPoolEntries: [
+      { id: 'a', email: 'one@example.com', enabled: true, used: false },
+      { id: 'b', email: 'two@example.com', enabled: true, used: true },
+      { id: 'c', email: 'three@example.com', enabled: false, used: false },
+    ],
+  };
+
+  assert.deepEqual(api.getCustomEmailPool(state), ['one@example.com']);
+  assert.equal(api.getCustomEmailPoolEmailForRun(state, 1), 'one@example.com');
+  assert.equal(api.getCustomEmailPoolEmailForRun(state, 2), '');
+});

tests/sidepanel-custom-email-pool.test.js

@@ -57,6 +57,9 @@ test('sidepanel html exposes custom email pool generator option and input row',
   assert.match(html, /option value="custom-pool">自定义邮箱池<\/option>/);
   assert.match(html, /id="row-custom-email-pool"/);
   assert.match(html, /id="input-custom-email-pool"/);
+  assert.match(html, /id="input-custom-email-pool-import"/);
+  assert.match(html, /id="custom-email-pool-list"/);
+  assert.match(html, /id="btn-custom-email-pool-bulk-used"/);
   assert.match(html, /id="row-custom-mail-provider-pool"/);
   assert.match(html, /id="input-custom-mail-provider-pool"/);
 });