Rewrite identity and access management

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

pkg/coredata/migrations/20251205T120000Z.sql

@@ -0,0 +1,9 @@
+CREATE TYPE session_expire_reason AS ENUM (
+    'idle_timeout',
+    'revoked',
+    'closed'
+);
+
+ALTER TABLE sessions ADD COLUMN expire_reason session_expire_reason;
+
+UPDATE sessions SET expire_reason = 'idle_timeout' WHERE expired_at < NOW();