diff --git a/app/components/GenericOAuthProviders.vue b/app/components/GenericOAuthProviders.vue
index 93174e5..b30dc88 100644
--- a/app/components/GenericOAuthProviders.vue
+++ b/app/components/GenericOAuthProviders.vue
@@ -1,11 +1,10 @@
 <script>
-/** 根据站点 oauth 配置显示第三方登录入口；启动跳转及错误处理复用 useOAuth。 */
+/** 根据站点 oauth 配置显示第三方登录入口；弹窗授权与结果确认复用 useOAuth。 */
 import "~/assets/styles/GenericOAuthProviders.Bv8oNwXP.css";
 import { toDisplayString } from "vue";
 import { renderList } from "vue";
 import { onMounted } from "vue";
 import { createBlock } from "vue";
-import { ref } from "vue";
 import { withCtx } from "vue";
 import { createCommentVNode } from "vue";
 import { computed } from "vue";
@@ -15,7 +14,6 @@ import { createTextVNode } from "vue";
 import { unref } from "vue";
 import { defineComponent } from "vue";
 import { openBlock } from "vue";
-import { NuxtLink } from "#components";
 import { t as useSiteConfig_t } from "~/lib/useSiteConfig.js";
 import button from "openvue/button";
 import { t as _plugin_vue_export_helper_t } from "~/lib/_plugin-vue_export-helper.js";
@@ -38,22 +36,15 @@ var x = {
         setup(f) {
           let _ = useSiteConfig_t(),
             w = computed(() => oauth_t(_.config.value?.oauth)),
-            { busy: T, error: E, start: D } = useOAuth_t(),
-            O = ref(!1);
+            { busy: T, error: E, start: D } = useOAuth_t();
           return (
             onMounted(() => {
               _.load();
-              try {
-                // 只读取浏览器会话中的待完成提示，不将该标志当作登录身份或授权凭证。
-                O.value =
-                  sessionStorage.getItem(`console-oauth-pending`) === `1`;
-              } catch {}
             }),
             (n, i) => {
               let s = button,
-                f = message,
-                h = NuxtLink;
-              return unref(w).length || unref(O)
+                f = message;
+              return unref(w).length
                 ? (openBlock(),
                   createElementBlock(`div`, x, [
                     unref(w).length
@@ -126,27 +117,6 @@ var x = {
                           },
                         ))
                       : createCommentVNode(``, !0),
-                    unref(O)
-                      ? (openBlock(),
-                        createBlock(
-                          h,
-                          {
-                            key: 2,
-                            to: `/oauth/callback`,
-                          },
-                          {
-                            default: withCtx(() => [
-                              ...(i[0] ||= [
-                                createTextVNode(
-                                  `已完成第三方授权？继续登录`,
-                                  -1,
-                                ),
-                              ]),
-                            ]),
-                            _: 1,
-                          },
-                        ))
-                      : createCommentVNode(``, !0),
                   ]))
                 : createCommentVNode(``, !0);
             }
diff --git a/app/lib/useOAuth.js b/app/lib/useOAuth.js
index 3b1f0e9..3669ac2 100644
--- a/app/lib/useOAuth.js
+++ b/app/lib/useOAuth.js
@@ -1,45 +1,157 @@
-/** OAuth 授权发起器：校验提供商和返回 URL，再整页跳转；不在前端构造第三方授权参数。 */
-import { onBeforeUnmount } from "vue";
-import { ref } from "vue";
-import { useApi } from "~/lib/auth.js";
-import { r as oauth_r } from "~/lib/oauth.js";
-function i() {
-  let i = useApi(),
-    a = ref(!1),
-    o = ref(``),
-    s = !0;
+/** OAuth 授权由发起页持有弹窗；窗口关闭只表示授权结束，身份结果仍须向后端确认。 */
+import { navigateTo, useRoute, useRuntimeConfig } from "#app";
+import { onBeforeUnmount, ref } from "vue";
+import { useApi, useAuth } from "~/lib/auth.js";
+import { r as safeRedirect } from "~/lib/auth-redirect.js";
+import {
+  n as parseOAuthResult,
+  r as authorizeUrl,
+  t as providers,
+} from "~/lib/oauth.js";
+
+function useOAuth() {
+  const api = useApi();
+  const auth = useAuth();
+  const config = useRuntimeConfig();
+  const route = useRoute();
+  const busy = ref(false);
+  const error = ref("");
+  let mounted = true;
+  let cancel;
+
   onBeforeUnmount(() => {
-    s = !1;
+    mounted = false;
+    cancel?.();
   });
-  // busy 防止重复发起，卸载标记防止用户离开页面后被迟到的授权响应再次跳走。
-  async function c(e) {
-    if (s && !a.value) {
-      if (((o.value = ``), !/^[a-z][a-z0-9_]*$/i.test(e))) {
-        o.value = `授权方式无效`;
-        return;
-      }
-      a.value = !0;
-      try {
-        let t = await i.get(`/oauth/${encodeURIComponent(e)}`);
-        if (!s) return;
-        let n = oauth_r(t?.url, window.location.origin);
-        if (!n) throw Error(`授权地址无效，请联系支持`);
-        try {
-          // 仅记录当前标签页曾发起授权，不存储 OAuth 凭证或 JWT。
-          sessionStorage.setItem(`console-oauth-pending`, `1`);
-        } catch {}
-        window.location.assign(n);
-      } catch (e) {
-        s && (o.value = e instanceof Error ? e.message : `授权失败`);
-      } finally {
-        s && (a.value = !1);
-      }
+
+  function start(provider) {
+    if (!mounted || busy.value) return Promise.resolve(false);
+    error.value = "";
+    if (typeof provider !== "string" || !/^[a-z][a-z0-9_]*$/i.test(provider)) {
+      error.value = "授权方式无效";
+      return Promise.resolve(false);
     }
+
+    // 必须在点击的同步调用栈创建窗口，等待接口后再打开会触发浏览器弹窗拦截。
+    const popup = window.open(
+      "about:blank",
+      "_blank",
+      "popup,width=800,height=800",
+    );
+    if (!popup) {
+      error.value = "授权窗口被浏览器拦截，请允许本站弹窗后重试";
+      return Promise.resolve(false);
+    }
+    // 保留父页检查 closed 的句柄，同时防止外部授权页反向控制发起页。
+    popup.opener = null;
+    const attempt = auth.prepareLogin();
+    const linking = !!auth.token;
+    const redirect = safeRedirect(route.query.redirect);
+    const deadline = Date.now() + 10 * 60 * 1000;
+    busy.value = true;
+
+    return new Promise((resolve) => {
+      let finished = false;
+      let launched = false;
+      let consuming = false;
+      const isCurrent = () => mounted && !finished && attempt.isCurrent();
+
+      function finish(message = "", success = false) {
+        if (finished) return;
+        finished = true;
+        clearInterval(timer);
+        // 外站加载后 opener 已隔离，浏览器不允许父页强关；后端回调或用户自行关闭窗口。
+        if (!launched && !popup.closed) popup.close();
+        if (cancel === finish) cancel = undefined;
+        if (mounted) {
+          busy.value = false;
+          if (attempt.isCurrent()) error.value = message;
+        }
+        resolve(success);
+      }
+
+      function ensureCurrent() {
+        if (!isCurrent()) {
+          finish();
+          return false;
+        }
+        if (Date.now() >= deadline) {
+          finish("授权已超时，请关闭授权窗口后重新授权");
+          return false;
+        }
+        return true;
+      }
+
+      async function consumeResult() {
+        try {
+          const data = await api.get(linking ? "/account" : "/oauth/token");
+          if (!ensureCurrent()) return;
+          if (linking) {
+            // 已登录关联会清除后端 OAuth 会话，因此通过账户资料确认，不能再次消费登录令牌。
+            if (
+              !providers(data.account?.oauth).some(
+                (item) => item.name === provider && item.linked,
+              )
+            )
+              throw Error("授权未完成，请重新关联账号");
+            finish("", true);
+            return;
+          }
+          const result = parseOAuthResult(
+            data,
+            window.location.origin,
+            new URL(
+              String(config.public.apiBase || window.location.origin),
+              window.location.origin,
+            ).origin,
+          );
+          if (result.kind === "login") {
+            attempt.commit(result.jwt);
+            finish("", true);
+            await navigateTo(redirect);
+          } else if (result.kind === "bind") {
+            const target = new URL(result.url);
+            if (redirect !== "/") target.searchParams.set("redirect", redirect);
+            finish("", true);
+            await navigateTo(target.pathname + target.search + target.hash);
+          } else {
+            throw Error("授权未完成或已过期，请重新授权");
+          }
+        } catch (cause) {
+          if (ensureCurrent())
+            finish(cause instanceof Error ? cause.message : "授权失败");
+        }
+      }
+
+      // 后端授权状态有效期为十分钟；离页、身份切换、取消与超时统一结束这一次授权。
+      const timer = setInterval(() => {
+        if (!ensureCurrent()) return;
+        if (popup.closed && !consuming) {
+          if (!launched) return finish();
+          consuming = true;
+          void consumeResult();
+        }
+      }, 300);
+      cancel = finish;
+
+      void (async () => {
+        try {
+          const data = await api.get(`/oauth/${encodeURIComponent(provider)}`);
+          if (!ensureCurrent()) return;
+          if (popup.closed) return finish();
+          const url = authorizeUrl(data?.url, window.location.origin);
+          if (!url) throw Error("授权地址无效，请联系支持");
+          popup.location.href = url;
+          launched = true;
+        } catch (cause) {
+          if (ensureCurrent())
+            finish(cause instanceof Error ? cause.message : "授权失败");
+        }
+      })();
+    });
   }
-  return {
-    busy: a,
-    error: o,
-    start: c,
-  };
+
+  return { busy, error, start };
 }
-export { i as t };
+
+export { useOAuth as t };
diff --git a/app/pages/account/connections.vue b/app/pages/account/connections.vue
index 40b08eb..6113295 100644
--- a/app/pages/account/connections.vue
+++ b/app/pages/account/connections.vue
@@ -95,6 +95,14 @@ var D = {
           }
         }
       }
+      // 授权弹窗完成后重新读取关联列表；成功提示只属于仍然存活的当前页面。
+      async function connect(provider) {
+        B.value = ``;
+        if ((await K(provider)) && J) {
+          B.value = `已关联账号`;
+          await Y();
+        }
+      }
       // 仅对已关联的提供方执行解绑；请求完成后重新加载列表，以服务端结果为准。
       async function X() {
         if (U.value?.linked && !H.value && !W.value && J) {
@@ -314,7 +322,7 @@ var D = {
                                           label: `关联账号`,
                                           disabled:
                                             unref(H) || unref(W) || unref(R),
-                                          onClick: (e) => unref(K)(t.name),
+                                          onClick: (e) => connect(t.name),
                                         },
                                         null,
                                         8,
diff --git a/app/pages/oauth/callback.vue b/app/pages/oauth/callback.vue
index 6bab135..a0ee032 100644
--- a/app/pages/oauth/callback.vue
+++ b/app/pages/oauth/callback.vue
@@ -70,9 +70,6 @@ var w = {
             );
             if (n.kind === `login`) {
               loginAttempt.commit(n.jwt);
-              try {
-                sessionStorage.removeItem(`console-oauth-pending`);
-              } catch {}
               await navigateTo(`/`);
             } else if (n.kind === `bind`) {
               if (new URL(n.url).pathname === `/oauth/callback`)
diff --git a/tests/review-oauth-session.e2e.test.mjs b/tests/review-oauth-session.e2e.test.mjs
index 97c7987..3e8d03c 100644
--- a/tests/review-oauth-session.e2e.test.mjs
+++ b/tests/review-oauth-session.e2e.test.mjs
@@ -107,6 +107,531 @@ async function sessionIsPreserved(page, transition) {
   );
 }
 
+async function genericOAuthBoundary(page, handle = async () => false) {
+  // 外部授权页与后端回调均通过真实弹窗访问；回调遵循生产的 about:blank + close 协议。
+  await page.context().route(`${backendOrigin}/oauth-provider`, (route) =>
+    route.fulfill({
+      contentType: "text/html",
+      body: `<meta charset="utf-8"><form action="${backendOrigin}/console/v1/oauth/callback/testprovider"><button>确认本地授权</button></form>`,
+    }),
+  );
+  await oauthBoundary(page, async (route, path) => {
+    if (await handle(route, path)) return true;
+    if (path === "/common") {
+      await respond(route, {
+        website_name: "本地授权验收",
+        login_phone_password: 1,
+        login_email_password: 1,
+        register_phone: 1,
+        register_email: 1,
+        oauth: [{ name: "testprovider", title: "本地授权" }],
+      });
+      return true;
+    }
+    if (path === "/oauth/testprovider") {
+      await respond(route, { url: `${backendOrigin}/oauth-provider` });
+      return true;
+    }
+    if (path === "/oauth/callback/testprovider") {
+      await route.fulfill({
+        contentType: "text/html",
+        body: '<script>window.location.href="about:blank";window.close()</script>',
+      });
+      return true;
+    }
+    return false;
+  });
+}
+
+async function openGenericOAuth(page, button = "本地授权登录") {
+  const opened = page.waitForEvent("popup", { timeout: 2500 });
+  await page.getByRole("button", { name: button, exact: true }).click();
+  const popup = await opened;
+  await popup.waitForURL(`${backendOrigin}/oauth-provider`);
+  assert.equal(await popup.evaluate(() => window.opener === null), true);
+  return popup;
+}
+
+test(
+  "generic OAuth login completes from its real popup and preserves the requested page",
+  { timeout: 25000 },
+  (t) =>
+    scenario(t, {}, async (page) => {
+      let tokenReads = 0;
+      await genericOAuthBoundary(page, async (route, path) => {
+        if (path !== "/oauth/token") return false;
+        tokenReads += 1;
+        await respond(route, { jwt: "e2e-session-token" });
+        return true;
+      });
+      await page.goto(`${appOrigin}/login?redirect=/security/ssh-keys`);
+      const popup = await openGenericOAuth(page);
+      assert.equal(new URL(page.url()).pathname, "/login");
+      await popup.getByRole("button", { name: "确认本地授权" }).click();
+      await page.waitForURL((url) => url.pathname === "/security/ssh-keys");
+      await page.getByText("audit-01", { exact: true }).waitFor();
+      await sessionIsPreserved(page, "login");
+      assert.equal(popup.isClosed(), true);
+      assert.equal(tokenReads, 1);
+      return { popupClosed: true, requestedPageRestored: true, tokenReads };
+    }),
+);
+
+test(
+  "generic OAuth continues a verified binding and keeps the requested page",
+  { timeout: 25000 },
+  (t) =>
+    scenario(t, {}, async (page) => {
+      await genericOAuthBoundary(page, async (route, path) => {
+        if (path === "/oauth/token") {
+          await respond(route, { url: `${backendOrigin}/oauth.htm` });
+          return true;
+        }
+        if (path === "/oauth/client/bind") {
+          await respond(route, { jwt: "e2e-session-token" });
+          return true;
+        }
+        return false;
+      });
+      await page.goto(`${appOrigin}/login?redirect=/security/ssh-keys`);
+      const popup = await openGenericOAuth(page);
+      await popup.getByRole("button", { name: "确认本地授权" }).click();
+      await page.waitForURL((url) => url.pathname === "/oauth/bind");
+      assert.equal(
+        new URL(page.url()).searchParams.get("redirect"),
+        "/security/ssh-keys",
+      );
+      await page.getByLabel("手机号", { exact: true }).fill("13800138000");
+      await page.getByLabel("验证码", { exact: true }).fill("123456");
+      await page.getByRole("checkbox").check();
+      await page.getByRole("button", { name: "确认绑定", exact: true }).click();
+      await page.waitForURL((url) => url.pathname === "/security/ssh-keys");
+      await sessionIsPreserved(page, "login");
+      return { bindingVerified: true, requestedPageRestored: true };
+    }),
+);
+
+test(
+  "closing a generic OAuth popup requires server confirmation and permits retry",
+  { timeout: 25000 },
+  (t) =>
+    scenario(t, {}, async (page) => {
+      let tokenReads = 0;
+      await genericOAuthBoundary(page, async (route, path) => {
+        if (path !== "/oauth/token") return false;
+        tokenReads += 1;
+        await respond(route, {});
+        return true;
+      });
+      await page.goto(`${appOrigin}/login`);
+      const popup = await openGenericOAuth(page);
+      await popup.close();
+      await page.getByRole("alert").waitFor();
+      assert.equal(new URL(page.url()).pathname, "/login");
+      await sessionIsPreserved(page, "logout");
+      assert.equal(tokenReads, 1);
+      const retry = await openGenericOAuth(page);
+      await retry.close();
+      await eventually(
+        () => page.getByRole("button", { name: "本地授权登录" }).isEnabled(),
+        Boolean,
+        "Cancelled authorization must permit another attempt",
+      );
+      assert.equal(tokenReads, 2);
+      return { noUnconfirmedLogin: true, retryAllowed: true, tokenReads };
+    }),
+);
+
+test(
+  "generic OAuth expires its external popup without consuming a later result",
+  { timeout: 25000 },
+  (t) =>
+    scenario(t, {}, async (page) => {
+      let tokenReads = 0;
+      await genericOAuthBoundary(page, async (route, path) => {
+        if (path !== "/oauth/token") return false;
+        tokenReads += 1;
+        await respond(route, { jwt: "e2e-session-token" });
+        return true;
+      });
+      await page.goto(`${appOrigin}/login`);
+      const popup = await openGenericOAuth(page);
+      // 只推进外部墙上时钟，保留浏览器真实轮询调度，避免混用已启动页面的虚拟计时器。
+      await page.clock.setFixedTime(
+        await page.evaluate(() => Date.now() + 10 * 60 * 1000 + 1),
+      );
+      await page.getByRole("alert").waitFor();
+      assert.equal(
+        await page.getByRole("button", { name: "本地授权登录" }).isEnabled(),
+        true,
+      );
+      assert.equal(popup.isClosed(), false);
+      await popup.getByRole("button", { name: "确认本地授权" }).click();
+      await eventually(
+        () => popup.isClosed(),
+        Boolean,
+        "The external callback must close its own popup",
+      );
+      await page.evaluate(
+        () =>
+          new Promise((done) =>
+            requestAnimationFrame(() => requestAnimationFrame(done)),
+          ),
+      );
+      await sessionIsPreserved(page, "logout");
+      assert.equal(tokenReads, 0);
+      return {
+        expiredAttemptReleased: true,
+        lateCallbackIgnored: true,
+        noResultConsumed: true,
+      };
+    }),
+);
+
+test(
+  "generic OAuth cleans up a blocked popup without starting server authorization",
+  { timeout: 25000 },
+  (t) =>
+    scenario(t, {}, async (page) => {
+      let authorizations = 0;
+      await genericOAuthBoundary(page, async (route, path) => {
+        if (path === "/oauth/testprovider") authorizations += 1;
+        return false;
+      });
+      await page.goto(`${appOrigin}/login`);
+      // 浏览器能力是外部边界：模拟弹窗策略返回 null，不替换应用内部模块。
+      await page.evaluate(() => {
+        window.open = () => null;
+      });
+      await page.getByRole("button", { name: "本地授权登录" }).click();
+      await page.getByRole("alert").waitFor();
+      assert.equal(
+        await page.getByRole("button", { name: "本地授权登录" }).isEnabled(),
+        true,
+      );
+      assert.equal(authorizations, 0);
+      await sessionIsPreserved(page, "logout");
+      return { blockedPopupReported: true, noAuthorizationStarted: true };
+    }),
+);
+
+test(
+  "generic OAuth rejects an unsafe authorization URL and closes its blank popup",
+  { timeout: 25000 },
+  (t) =>
+    scenario(t, {}, async (page) => {
+      await genericOAuthBoundary(page, async (route, path) => {
+        if (path !== "/oauth/testprovider") return false;
+        await respond(route, { url: "javascript:window.name='unsafe'" });
+        return true;
+      });
+      await page.goto(`${appOrigin}/login`);
+      const opened = page.waitForEvent("popup");
+      await page.getByRole("button", { name: "本地授权登录" }).click();
+      const popup = await opened;
+      await page.getByRole("alert").waitFor();
+      await eventually(
+        () => popup.isClosed(),
+        Boolean,
+        "An unsafe authorization address must close its popup",
+      );
+      assert.equal(new URL(page.url()).pathname, "/login");
+      await sessionIsPreserved(page, "logout");
+      return { unsafeUrlRejected: true, popupClosed: true };
+    }),
+);
+
+test(
+  "generic OAuth discards a pending login result after leaving its page",
+  { timeout: 25000 },
+  (t) =>
+    scenario(t, {}, async (page) => {
+      const started = deferred();
+      const release = deferred();
+      await genericOAuthBoundary(page, async (route, path) => {
+        if (path !== "/oauth/token") return false;
+        started.resolve();
+        await release.promise;
+        await respond(route, { jwt: "test-older-oauth-session" });
+        return true;
+      });
+      await page.goto(`${appOrigin}/login`);
+      const popup = await openGenericOAuth(page);
+      await popup.getByRole("button", { name: "确认本地授权" }).click();
+      await started.promise;
+      await page.getByRole("link", { name: "注册账号", exact: true }).click();
+      await page.waitForURL((url) => url.pathname === "/register");
+      const response = page.waitForResponse((entry) =>
+        entry.url().endsWith("/oauth/token"),
+      );
+      release.resolve();
+      await (await response).finished();
+      await page.evaluate(
+        () =>
+          new Promise((done) =>
+            requestAnimationFrame(() => requestAnimationFrame(done)),
+          ),
+      );
+      assert.equal(new URL(page.url()).pathname, "/register");
+      await sessionIsPreserved(page, "logout");
+      return { unmountedResultIgnored: true, noOldNavigation: true };
+    }),
+);
+
+for (const abandon of ["close", "leave", "login", "logout"]) {
+  test(
+    `generic OAuth ignores a late authorization URL after ${abandon}`,
+    { timeout: 25000 },
+    (t) =>
+      scenario(t, {}, async (page) => {
+        const started = deferred();
+        const release = deferred();
+        let tokenReads = 0;
+        await genericOAuthBoundary(page, async (route, path) => {
+          if (path === "/oauth/testprovider") {
+            started.resolve();
+            await release.promise;
+            await respond(route, { url: `${backendOrigin}/oauth-provider` });
+            return true;
+          }
+          if (path === "/oauth/token") {
+            tokenReads += 1;
+            await respond(route, { jwt: "test-older-oauth-session" });
+            return true;
+          }
+          return false;
+        });
+        await page.goto(`${appOrigin}/login`);
+        const opened = page.waitForEvent("popup");
+        await page.getByRole("button", { name: "本地授权登录" }).click();
+        const popup = await opened;
+        await started.promise;
+        if (abandon === "close") await popup.close();
+        else if (abandon === "leave")
+          await page
+            .getByRole("link", { name: "注册账号", exact: true })
+            .click();
+        else await changeSession(page, abandon);
+        await eventually(
+          () => popup.isClosed(),
+          Boolean,
+          "Abandoned authorization must close its popup",
+        );
+        const response = page.waitForResponse((entry) =>
+          entry.url().endsWith("/oauth/testprovider"),
+        );
+        release.resolve();
+        await (await response).finished();
+        await page.evaluate(
+          () =>
+            new Promise((done) =>
+              requestAnimationFrame(() => requestAnimationFrame(done)),
+            ),
+        );
+        assert.equal(
+          new URL(page.url()).pathname,
+          abandon === "leave" ? "/register" : "/login",
+        );
+        await sessionIsPreserved(
+          page,
+          abandon === "login" ? "login" : "logout",
+        );
+        assert.equal(tokenReads, 0);
+        assert.equal(await page.getByRole("alert").count(), 0);
+        return { abandon, lateUrlIgnored: true, popupClosed: true, tokenReads };
+      }),
+  );
+}
+
+for (const transition of ["login", "logout"]) {
+  for (const outcome of ["jwt", "bind", "error"]) {
+    test(
+      `generic OAuth ignores a late ${outcome} after cross-tab ${transition}`,
+      { timeout: 25000 },
+      (t) =>
+        scenario(t, {}, async (page) => {
+          const started = deferred();
+          const release = deferred();
+          await genericOAuthBoundary(page, async (route, path) => {
+            if (path !== "/oauth/token") return false;
+            started.resolve();
+            await release.promise;
+            await respond(
+              route,
+              outcome === "jwt"
+                ? { jwt: "test-older-oauth-session" }
+                : { url: "/oauth/bind" },
+              outcome === "error" ? 422 : 200,
+              outcome === "error" ? "过期授权请求失败" : "",
+            );
+            return true;
+          });
+          await page.goto(`${appOrigin}/login`);
+          const popup = await openGenericOAuth(page);
+          await popup.getByRole("button", { name: "确认本地授权" }).click();
+          await started.promise;
+          await changeSession(page, transition);
+          const response = page.waitForResponse((entry) =>
+            entry.url().endsWith("/oauth/token"),
+          );
+          release.resolve();
+          await (await response).finished();
+          await eventually(
+            () =>
+              page.getByRole("button", { name: "本地授权登录" }).isEnabled(),
+            Boolean,
+            "A stale authorization must release its login button",
+          );
+          await page.evaluate(
+            () =>
+              new Promise((done) =>
+                requestAnimationFrame(() => requestAnimationFrame(done)),
+              ),
+          );
+          assert.equal(new URL(page.url()).pathname, "/login");
+          assert.equal(await page.getByRole("alert").count(), 0);
+          await sessionIsPreserved(page, transition);
+          return {
+            transition,
+            outcome,
+            lateResultIgnored: true,
+            newerSessionPreserved: true,
+          };
+        }),
+    );
+  }
+}
+
+for (const abandon of ["leave", "login", "logout"]) {
+  test(
+    `generic OAuth does not consume a popup closed after ${abandon}`,
+    { timeout: 25000 },
+    (t) =>
+      scenario(t, {}, async (page) => {
+        let tokenReads = 0;
+        await genericOAuthBoundary(page, async (route, path) => {
+          if (path !== "/oauth/token") return false;
+          tokenReads += 1;
+          await respond(route, { jwt: "test-older-oauth-session" });
+          return true;
+        });
+        await page.goto(`${appOrigin}/login`);
+        const popup = await openGenericOAuth(page);
+        if (abandon === "leave") {
+          await page
+            .getByRole("link", { name: "注册账号", exact: true })
+            .click();
+          await page.waitForURL((url) => url.pathname === "/register");
+        } else {
+          await changeSession(page, abandon);
+          await eventually(
+            () =>
+              page.getByRole("button", { name: "本地授权登录" }).isEnabled(),
+            Boolean,
+            "A newer session must release the old authorization attempt",
+          );
+        }
+        // 外部窗口保留 opener 隔离；完成旧回调后，已结束的发起页也不得再消费结果。
+        await popup.getByRole("button", { name: "确认本地授权" }).click();
+        await eventually(
+          () => popup.isClosed(),
+          Boolean,
+          "The old callback must close its own popup",
+        );
+        await page.evaluate(
+          () =>
+            new Promise((done) =>
+              requestAnimationFrame(() => requestAnimationFrame(done)),
+            ),
+        );
+        assert.equal(
+          new URL(page.url()).pathname,
+          abandon === "leave" ? "/register" : "/login",
+        );
+        assert.equal(await page.getByRole("alert").count(), 0);
+        await sessionIsPreserved(
+          page,
+          abandon === "login" ? "login" : "logout",
+        );
+        assert.equal(tokenReads, 0);
+        return { abandon, endedAttemptNotResumed: true, tokenReads };
+      }),
+  );
+}
+
+for (const completed of [true, false]) {
+  test(
+    `generic OAuth verifies a ${completed ? "completed" : "cancelled"} authenticated link without consuming a login token`,
+    { timeout: 25000 },
+    (t) =>
+      scenario(t, {}, async (page) => {
+        let linked = false;
+        let tokenReads = 0;
+        await genericOAuthBoundary(page, async (route, path) => {
+          if (path === "/account") {
+            await respond(route, {
+              account: {
+                id: 1,
+                username: "audit-user",
+                oauth: [
+                  {
+                    name: "testprovider",
+                    title: "本地授权",
+                    link: linked ? 1 : 0,
+                  },
+                ],
+              },
+            });
+            return true;
+          }
+          if (path === "/oauth/callback/testprovider") linked = true;
+          if (path === "/oauth/token") {
+            tokenReads += 1;
+            await respond(route, {});
+            return true;
+          }
+          return false;
+        });
+        await login(page, "/account/connections");
+        await page.getByText("未关联", { exact: true }).waitFor();
+        const popup = await openGenericOAuth(page, "关联账号");
+        if (completed) {
+          await popup.getByRole("button", { name: "确认本地授权" }).click();
+          await page.getByText("已关联", { exact: true }).waitFor();
+          assert.equal(
+            await page
+              .getByRole("button", { name: "取消关联", exact: true })
+              .isVisible(),
+            true,
+          );
+        } else {
+          await popup.close();
+          await page.getByRole("alert").waitFor();
+          await page.getByText("未关联", { exact: true }).waitFor();
+          assert.equal(
+            await page
+              .getByRole("button", { name: "关联账号", exact: true })
+              .isEnabled(),
+            true,
+          );
+          assert.equal(
+            await page
+              .getByRole("button", { name: "取消关联", exact: true })
+              .count(),
+            0,
+          );
+        }
+        assert.equal(tokenReads, 0);
+        await sessionIsPreserved(page, "login");
+        return {
+          serverLinkVerified: true,
+          completed,
+          tokenReads,
+        };
+      }),
+  );
+}
+
 test(
   "OAuth callback establishes a current session normally",
   { timeout: 25000 },