Add User Model Service and Temporal Recall for MeMind V0.1.

Introduce UMS ingest/snapshot pipeline, Context Planner with multi-source recall, runtime context injection, canonical user mapping, and session snapshot loading on auth/me.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/portal-api-auth-middleware.mjs

@@ -22,6 +22,8 @@ export function createPortalApiAuthMiddleware({
   isPageDataPublicPath = () => false,
   isLegacyPageDataApiPath = () => false,
   isProductAnalyticsPublicPath = () => false,
+  isUmsIngestPublicPath = () => false,
+  isTemporalRecallInfoPublicPath = () => false,
   accessPolicyMode = PORTAL_ACCESS_POLICY_MODE.OFF,
   accessEnforcementConfig = Object.freeze({
     masterEnabled: false,
@@ -104,6 +106,8 @@ export function createPortalApiAuthMiddleware({
       req.path,
       req.method,
     );
+    const umsIngestPublic = isUmsIngestPublicPath(req.path, req.method);
+    const temporalRecallInfoPublic = isTemporalRecallInfoPublicPath(req.path, req.method);
     // The retired namespace must reach its explicit 410 route instead of
     // being converted into a misleading global 401/403 response.
     const legacyPageDataApi = isLegacyPageDataApiPath(req.path);
@@ -114,7 +118,9 @@ export function createPortalApiAuthMiddleware({
           plazaPublic ||
           pageDataPublic ||
           legacyPageDataApi ||
-          productAnalyticsPublic
+          productAnalyticsPublic ||
+          umsIngestPublic ||
+          temporalRecallInfoPublic
         ) {
           return next();
         }
@@ -129,7 +135,9 @@ export function createPortalApiAuthMiddleware({
           plazaPublic ||
           pageDataPublic ||
           legacyPageDataApi ||
-          productAnalyticsPublic
+          productAnalyticsPublic ||
+          umsIngestPublic ||
+          temporalRecallInfoPublic
         ) {
           return next();
         }