Replace Google Tasks service-account auth with real OAuth

Service-account auth structurally cannot see a regular user's personal
task lists (no equivalent of Calendar's per-item sharing model) --
confirmed via GetTaskLists returning exactly the service account's own
empty "My Tasks" list, never the real user's three lists. Zero rows
were ever cached in production as a result.

Adds a standard 3-legged OAuth flow: /settings/google-tasks/connect
redirects to Google's consent screen (AccessTypeOffline+ApprovalForce
so a refresh_token is always issued), /callback exchanges the code and
persists the token (new oauth_tokens table), /disconnect clears it.
GoogleTasksClient now takes an option.ClientOption instead of a
credentials file path; NewGoogleTasksOAuthClient wraps it with a
dbTokenSource that reloads/refreshes from the DB on each access-token
expiry and re-persists -- carefully preserving the original
refresh_token when Google's refresh response omits one (it usually
does), which would otherwise silently and permanently break future
refreshes.

Settings page shows connection status and a Connect/Disconnect
button. Calendar keeps using service-account auth (that one actually
works). Requires a one-time manual step: create an OAuth 2.0 Client ID
in Google Cloud Console and set GOOGLE_OAUTH_CLIENT_ID/SECRET in .env
-- documented in .env.example.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/acceptance_test.go b/test/acceptance_test.go
index e1710bd..a6838f0 100644
--- a/test/acceptance_test.go
+++ b/test/acceptance_test.go
@@ -81,7 +81,7 @@ func setupTestServer(t *testing.T) (*httptest.Server, *store.Store, *http.Client
 	}
 
 	// Initialize handlers
-	h := handlers.New(db, trelloClient, nil, nil, nil, nil, cfg, "test", false)
+	h := handlers.New(db, trelloClient, nil, nil, nil, nil, nil, cfg, scs.New(), "test", false)
 
 	// Set up router (same as main.go)
 	r := chi.NewRouter()