fix(auth): initialize Google Identity once

docs/audits/verification-log.md

@@ -240,3 +240,4 @@ Output was reduced to filenames and commit counts. The token artifact appears un
 | V-206 | Ownership/migration chain; populated adoption/downgrade/retry; practice-state/FK/index assertions; MariaDB script; full backend | Repository root / disposable local SQLite | Move durable interview-preparation items to migration ownership without losing user or AI preparation content | PASS — focused ownership/migration 18/18; user-authored and AI-generated questions, answers, prepared state and source metadata survive adoption, downgrade and re-upgrade; owner/job/sort index exists; deleting the parent application cascades through preparation items; generated MariaDB SQL is provider-safe; startup no longer creates the table; full backend 734/734 | MariaDB SQL generated only; no provider account or production migration. Guarded malformed-empty/index/auto-increment repair remains temporarily. Fifteen reconciler-owned tables remain | JT-019 feature-table transfers complete; the Career Profile aggregate and Identity group remain dependency-aware batches |
 | V-207 | Ownership/migration chain; populated aggregate adoption/downgrade/retry; JSON/text/FK/index assertions; MariaDB script; full backend | Repository root / disposable local SQLite | Move the canonical Career Profile, append-only history, and six relational child types to migration ownership without losing career data | PASS — focused ownership/migration 19/19; canonical and long-tail JSON, Norwegian text, version history, experience, education, skill, project, certification and language rows survive adoption, downgrade and re-upgrade; all 14 aggregate indexes exist; deleting the profile cascades through history and children; generated MariaDB SQL uses bounded indexed keys and provider-safe types; startup creates none of the eight tables; full backend 735/735 | MariaDB SQL generated only; no production migration. Guarded historical LongTailJson/index/auto-increment repairs remain temporarily. Seven reconciler-owned Identity tables remain | JT-019 feature and career transfers complete; isolate the Identity ownership boundary next |
 | V-208 | Ownership/migration chain; populated Identity adoption/downgrade/retry; credential/preference/FK/index assertions; MariaDB script; full backend; fresh application startup | Repository root / disposable local SQLite | Complete JT-019 by moving the seven ASP.NET Identity tables to migration ownership without invalidating authentication data | PASS — focused ownership/migration 20/20; password hash, Bokmål preference, 2FA state, role assignment, role/user claims, external login and token survive adoption, downgrade and re-upgrade; all eight Identity indexes exist; user and role deletion cascades remain effective; generated MariaDB SQL is provider-safe; startup creates no model tables; full backend 736/736; a fresh application applies the complete chain, reaches Identity role initialization and listens normally | MariaDB SQL generated only; no production migration. The historical AspNetUsers compatibility bootstrap and guarded column/index repairs remain for chain traversal and legacy upgrades. Launch settings supplied an existing policy-invalid development admin password, producing a non-fatal seed warning | JT-019 complete; future work may retire individual repair statements only after provider-backed historical fixtures prove them redundant |
+| V-209 | Google Identity initialization regression; focused login Jest; ESLint; TypeScript; complete Playwright | `job-tracker-ui` / disposable local application | Remove repeated global Google SDK initialization without changing sign-in or account-link behavior | PASS — SDK initialization is stable per loaded Identity API/client ID while the mounted card owns the current credential handler; login 13/13, lint and TypeScript pass; Playwright 10/10 covers authentication, job creation/workspace, Career Workspace and searchable PDF exports with no repeated-initialize warning | Synthetic Google callback only; no real provider credential, account link or production call | Repeatable browser-console defect closed; real-provider verification remains externally gated |

docs/work-programmes/master-progress.md

@@ -90,7 +90,7 @@ Updated: 2026-08-30
 - Next production build and TypeScript: passed.
 - Full backend: 736/736 tests passed after completing the Identity/JT-019 ownership transfer.
 - Portable Playwright launcher: resolved the user-local .NET 9 SDK; backend Release build passed with 0 warnings/errors.
-- Playwright: initial full run 9/10 exposed the intentional mobile Settings control change; updated focused rerun passed 1/1. A final complete browser rerun remains in the end-of-batch gate.
+- Playwright: final complete browser rerun passed 10/10, including authenticated job creation/workspace flows and both public and long searchable multi-page CV PDF exports.
 - Focused backend match/intelligence verification: 34/34 passed.
 - Focused frontend application-intelligence verification: 11/11 passed.
 - Career/Profile focused verification: 2 suites, 19/19 passed, including the final navigation/state-preservation regression; final full-suite/E2E gates remain pending.
@@ -117,7 +117,7 @@ Updated: 2026-08-30
 - Shared view-state focused verification: 3 suites and 15/15 tests passed, including Bokmål loading/retry and Kanban interaction coverage; TypeScript passed.
 - Admin Audit/settings/profile focused verification: 3 suites and 17/17 tests passed, including unavailable-versus-empty recovery and Bokmål audit actions that preserve stored event content; TypeScript passed.
 - Turnstile/auth recovery focused verification: 4 suites and 18/18 tests passed; the provider widget receives the Bokmål language code and TypeScript passed.
-- Final shared-state/localization regression: all 64 frontend suites and 272/272 tests passed; optimized Next build and integrated TypeScript passed; complete Playwright passed 10/10, including public PDF and the searchable multi-page Code template. Only the pre-existing Google Identity development logger warning remained.
+- Final shared-state/localization regression: all 64 frontend suites and 272/272 tests passed; optimized Next build and integrated TypeScript passed; complete Playwright passed 10/10, including public PDF and the searchable multi-page Code template. Google Identity now initializes its global SDK once while rerenders replace only the active credential handler; the focused login regression, ESLint, TypeScript and a fresh 10/10 browser run pass without the repeated-initialize warning.
 - Admin/correspondence/profile helper-copy verification: 3 suites and 22/22 tests passed, including a Bokmål SMTP-message regression; TypeScript passed.
 - Local toolchain/lint verification: Python 3.12.10; sidecar 26/26 tests passed with five existing SWIG deprecation warnings; ESLint passes with zero warnings; frontend 64 suites and 272/272 tests passed; optimized Next build and integrated TypeScript passed; npm audit reports zero vulnerabilities.
 - Backend matcher/intelligence focused verification: 35/35 passed, including detection of a manually created Norwegian advert with no saved translation.

job-tracker-ui/src/components/GoogleAuthCard.tsx

@@ -10,10 +10,38 @@ import { useI18n } from "../i18n/I18nProvider";
 
 declare global {
   interface Window {
-    google?: any;
+    google?: {
+      accounts?: {
+        id?: GoogleIdentityApi;
+      };
+    };
   }
 }
 
+type GoogleCredentialResponse = {
+  credential?: string;
+};
+
+type GoogleIdentityApi = {
+  initialize: (options: { client_id: string; callback: (response: GoogleCredentialResponse) => void }) => void;
+  renderButton: (host: HTMLElement, options: Record<string, string>) => void;
+};
+
+let initializedIdentityApi: GoogleIdentityApi | null = null;
+let initializedClientId = "";
+let activeCredentialHandler: ((response: GoogleCredentialResponse) => void) | null = null;
+
+function initializeGoogleIdentity(identityApi: GoogleIdentityApi, clientId: string) {
+  if (initializedIdentityApi === identityApi && initializedClientId === clientId) return;
+
+  identityApi.initialize({
+    client_id: clientId,
+    callback: (response) => activeCredentialHandler?.(response),
+  });
+  initializedIdentityApi = identityApi;
+  initializedClientId = clientId;
+}
+
 type MeResponse = {
   provider?: "local" | "google" | "external";
   email?: string;
@@ -100,11 +128,10 @@ export default function GoogleAuthCard({ onSignedIn, presentation = "account" }:
     let active = true;
     void loadGoogleScript()
       .then(() => {
-        if (!active || !window.google?.accounts?.id || !hostRef.current) return;
+        const identityApi = window.google?.accounts?.id;
+        if (!active || !identityApi || !hostRef.current) return;
         hostRef.current.replaceChildren();
-        window.google.accounts.id.initialize({
-          client_id: clientId,
-          callback: async (resp: any) => {
+        const credentialHandler = async (resp: GoogleCredentialResponse) => {
           const credential = resp?.credential as string | undefined;
           if (!credential) return;
           setWorking(true);
@@ -123,14 +150,15 @@ export default function GoogleAuthCard({ onSignedIn, presentation = "account" }:
                 onSignedIn?.();
               }
             }
-            } catch (e: any) {
+          } catch (e: unknown) {
             toast(getApiErrorMessage(e, t("googleAuthFailed")), "error");
           } finally {
             setWorking(false);
           }
-          },
-        });
-        window.google.accounts.id.renderButton(hostRef.current, {
+        };
+        activeCredentialHandler = credentialHandler;
+        initializeGoogleIdentity(identityApi, clientId);
+        identityApi.renderButton(hostRef.current, {
           theme: "outline",
           size: "large",
           type: "standard",
@@ -142,6 +170,7 @@ export default function GoogleAuthCard({ onSignedIn, presentation = "account" }:
 
     return () => {
       active = false;
+      activeCredentialHandler = null;
       host.replaceChildren();
     };
   }, [clientId, me?.provider, me?.googleLink?.linked, onSignedIn, signInOnly, signedIn, toast, t]);

job-tracker-ui/src/login-page.test.tsx

@@ -155,8 +155,9 @@ describe('LoginPage', () => {
   it('completes a Google credential return without account-linking copy', async () => {
     process.env.NEXT_PUBLIC_GOOGLE_CLIENT_ID = 'google-client';
     let callback: ((response: { credential: string }) => void) | undefined;
+    const initialize = jest.fn((options: any) => { callback = options.callback; });
     (window as any).google = { accounts: { id: {
-      initialize: jest.fn((options: any) => { callback = options.callback; }),
+      initialize,
       renderButton: jest.fn((host: HTMLElement) => {
         const button = document.createElement('button');
         button.textContent = 'Continue with Google';
@@ -172,6 +173,7 @@ describe('LoginPage', () => {
 
     await waitFor(() => expect(mockedApi.post).toHaveBeenCalledWith('/auth/google/exchange', { token: 'synthetic-google-token', rememberMe: true }));
     await waitFor(() => expect(mockNavigate).toHaveBeenCalledWith('/dashboard', { replace: true }));
+    expect(initialize).toHaveBeenCalledTimes(1);
     expect(screen.queryByText(/create your account automatically/i)).not.toBeInTheDocument();
   });