feat: persist current workspace in user sessions

crates/crank-registry/src/migrations.rs

@@ -67,6 +67,7 @@ pub async fn apply_postgres(pool: &PgPool) -> Result<(), sqlx::Error> {
         "create table if not exists user_sessions (
             id text primary key,
             user_id text not null references users(id) on delete cascade,
+            current_workspace_id text null references workspaces(id) on delete set null,
             secret_hash text not null,
             status text not null,
             expires_at timestamptz not null,
@@ -77,6 +78,13 @@ pub async fn apply_postgres(pool: &PgPool) -> Result<(), sqlx::Error> {
     .execute(pool)
     .await?;
 
+    query(
+        "alter table user_sessions
+         add column if not exists current_workspace_id text null references workspaces(id) on delete set null",
+    )
+    .execute(pool)
+    .await?;
+
     query(
         "insert into workspaces (
             id,