diff --git a/api/controllers/console/auth/oauth_server.py b/api/controllers/console/auth/oauth_server.py
index 6f728d96e37..fe297c6c725 100644
--- a/api/controllers/console/auth/oauth_server.py
+++ b/api/controllers/console/auth/oauth_server.py
@@ -57,6 +57,7 @@ class OAuthProviderTokenResponse(BaseModel):
 
 
 class OAuthProviderAccountResponse(BaseModel):
+    id: str
     name: str
     email: str
     avatar: str | None = None
@@ -252,6 +253,7 @@ class OAuthServerUserAccountApi(Resource):
     def post(self, oauth_provider_app: OAuthProviderApp, account: Account):
         return jsonable_encoder(
             {
+                "id": account.id,
                 "name": account.name,
                 "email": account.email,
                 "avatar": account.avatar,
diff --git a/api/tests/unit_tests/controllers/console/auth/test_oauth_server.py b/api/tests/unit_tests/controllers/console/auth/test_oauth_server.py
index 2477f537a47..7a03e089e9d 100644
--- a/api/tests/unit_tests/controllers/console/auth/test_oauth_server.py
+++ b/api/tests/unit_tests/controllers/console/auth/test_oauth_server.py
@@ -7,6 +7,7 @@ from controllers.console.auth.oauth_server import (
     OAuthProviderAppResponse,
     OAuthProviderRequest,
     OAuthServerAppApi,
+    OAuthServerUserAccountApi,
     OAuthServerUserAuthorizeApi,
 )
 from models import Account
@@ -52,6 +53,16 @@ def test_oauth_authorize_uses_injected_current_user() -> None:
     assert response == {"code": "authorization-code"}
 
 
+def test_oauth_account_returns_stable_account_id() -> None:
+    api = OAuthServerUserAccountApi()
+    method = unwrap(api.post)
+    account = _make_account()
+
+    response = method(api, _make_oauth_provider_app(), account)
+
+    assert response["id"] == "account-1"
+
+
 def test_oauth_provider_app_response_requires_auto_authorize() -> None:
     # A missing field must fail validation instead of silently defaulting:
     # an optional field would surface as `undefined` in the generated TS
diff --git a/packages/contracts/generated/api/console/oauth/types.gen.ts b/packages/contracts/generated/api/console/oauth/types.gen.ts
index 075b41f75d3..2108c56280d 100644
--- a/packages/contracts/generated/api/console/oauth/types.gen.ts
+++ b/packages/contracts/generated/api/console/oauth/types.gen.ts
@@ -41,6 +41,7 @@ export type OAuthClientPayload = {
 export type OAuthProviderAccountResponse = {
   avatar?: string | null
   email: string
+  id: string
   interface_language: string
   name: string
   timezone: string
diff --git a/packages/contracts/generated/api/console/oauth/zod.gen.ts b/packages/contracts/generated/api/console/oauth/zod.gen.ts
index d632f0a2124..960d1e429c3 100644
--- a/packages/contracts/generated/api/console/oauth/zod.gen.ts
+++ b/packages/contracts/generated/api/console/oauth/zod.gen.ts
@@ -61,6 +61,7 @@ export const zOAuthClientPayload = z.object({
 export const zOAuthProviderAccountResponse = z.object({
   avatar: z.string().nullish(),
   email: z.string(),
+  id: z.string(),
   interface_language: z.string(),
   name: z.string(),
   timezone: z.string(),
diff --git a/web/features/new-rag/__tests__/knowledge-space-shell.spec.tsx b/web/features/new-rag/__tests__/knowledge-space-shell.spec.tsx
index d8ad419c527..fab2b9d3820 100644
--- a/web/features/new-rag/__tests__/knowledge-space-shell.spec.tsx
+++ b/web/features/new-rag/__tests__/knowledge-space-shell.spec.tsx
@@ -115,9 +115,13 @@ describe('KnowledgeSpaceShell', () => {
   })
 
   it.each([
+    ['/datasets/new/space-1', 'dataset.newKnowledge.overviewTitle'],
     ['/datasets/new/space-1/sources', 'dataset.newKnowledge.sources'],
     ['/datasets/new/space-1/sources/new', 'dataset.newKnowledge.addSource'],
     ['/datasets/new/space-1/documents', 'dataset.newKnowledge.documents'],
+    ['/datasets/new/space-1/retrieval', 'dataset.newKnowledge.retrievalTest.title'],
+    ['/datasets/new/space-1/quality', 'dataset.newKnowledge.quality'],
+    ['/datasets/new/space-1/settings', 'common.datasetMenus.settings'],
   ])('identifies the current detail page for %s', async (pathname, pageTitle) => {
     pathnameMock.value = pathname
     queryMock.data = {
diff --git a/web/features/new-rag/knowledge-space-shell.tsx b/web/features/new-rag/knowledge-space-shell.tsx
index 2b414eeb90f..0e5ca52cde1 100644
--- a/web/features/new-rag/knowledge-space-shell.tsx
+++ b/web/features/new-rag/knowledge-space-shell.tsx
@@ -71,10 +71,18 @@ function retrievalModeFromProfile(modelProfile: unknown) {
 const knowledgeSpacePageTitle = (
   pathname: string,
   t: ReturnType<typeof useTranslation<'dataset'>>['t'],
+  tCommon: ReturnType<typeof useTranslation<'common'>>['t'],
 ) => {
-  if (pathname.includes('/sources/new')) return t(($) => $['newKnowledge.addSource'])
-  if (pathname.includes('/sources')) return t(($) => $['newKnowledge.sources'])
-  if (pathname.includes('/documents')) return t(($) => $['newKnowledge.documents'])
+  const [, root, view, , section, detail] = pathname.split('/')
+  if (root !== 'datasets' || view !== 'new') return t(($) => $.knowledge)
+
+  if (!section) return t(($) => $['newKnowledge.overviewTitle'])
+  if (section === 'sources' && detail === 'new') return t(($) => $['newKnowledge.addSource'])
+  if (section === 'sources') return t(($) => $['newKnowledge.sources'])
+  if (section === 'documents') return t(($) => $['newKnowledge.documents'])
+  if (section === 'retrieval') return t(($) => $['newKnowledge.retrievalTest.title'])
+  if (section === 'quality') return t(($) => $['newKnowledge.quality'])
+  if (section === 'settings') return tCommon(($) => $['datasetMenus.settings'])
 
   return t(($) => $.knowledge)
 }
@@ -133,7 +141,7 @@ export function KnowledgeSpaceShell({
     knowledgeSpaceQuery.data?.technical_summary?.name ?? t(($) => $.knowledge)
   const modelProfile = knowledgeSpaceQuery.data?.technical_summary?.model_profile
   const retrievalMode = retrievalModeFromProfile(modelProfile)
-  const pageTitle = knowledgeSpacePageTitle(pathname, t)
+  const pageTitle = knowledgeSpacePageTitle(pathname, t, tCommon)
   const documentTitle = `${pageTitle} · ${knowledgeSpaceName}`
   const documentTitleOwnedByChild =
     isDocumentDetailPath(pathname) &&