feat: persist current workspace in user sessions

TASKS.md

@@ -2,22 +2,21 @@
 
 ## Current
 
-### `feat/demo-assets`
+### `feat/current-workspace-session-model`
 
 Status: in_progress
 
 DoD:
-- project has an idempotent PostgreSQL demo seed for live UI screens
-- demo seed fills workspaces, memberships, invitations, operations, agents, keys and usage
-- seed is controlled by env and does not live in migrations
-- docs explain how to enable and use demo data
+- current workspace is stored in authenticated session, not only in localStorage
+- workspace switcher updates session state through auth API
+- shell identity and page data follow session-selected workspace after reload
+- frontend retains only cache/fallback state, not source-of-truth selection
 
 ## Next
 
-- `feat/alpine-polish`
+- `feat/agent-lifecycle-polish`
 
 ## Backlog
 
-- `feat/current-workspace-session-model`
 - `feat/agent-lifecycle-polish`
 - `feat/platform-key-usage`