addition of new dashboard

backend/modules/dashboard/storage.js

@@ -0,0 +1,39 @@
+import { getPool } from "../../db/index.js";
+
+// Audit rows carry no user_id, so they are attributed via event OR agreement
+// uuid — deliberately wider than the event-only listAudit view.
+export async function getStorage(userId) {
+  const client = await getPool();
+  try {
+    const row = (
+      await client.query(
+        `WITH ua AS (
+           SELECT a.audit_id, a.digest
+           FROM audit a
+           WHERE a.event_id IN (SELECT event_id_uuid FROM event WHERE user_id = $1)
+              OR a.agreement_id IN (SELECT agreement_id_uuid FROM agreement WHERE user_id = $1)
+         )
+         SELECT
+           (SELECT COALESCE(SUM(pg_column_size(data)), 0)::bigint FROM event_data WHERE user_id = $1) AS core_on_disk,
+           (SELECT COALESCE(SUM(octet_length(data)), 0)::bigint   FROM event_data WHERE user_id = $1) AS core_logical,
+           COALESCE(SUM(pg_column_size(ua.digest)), 0)::bigint
+             + COALESCE((SELECT SUM(pg_column_size(s.jws)) FROM audit_signature s WHERE s.audit_id IN (SELECT audit_id FROM ua)), 0)::bigint AS audit_on_disk,
+           COALESCE(SUM(octet_length(ua.digest)), 0)::bigint
+             + COALESCE((SELECT SUM(octet_length(s.jws)) FROM audit_signature s WHERE s.audit_id IN (SELECT audit_id FROM ua)), 0)::bigint AS audit_logical
+         FROM ua`,
+        [userId],
+      )
+    ).rows[0];
+
+    const coreOnDisk = Number(row.core_on_disk);
+    const auditOnDisk = Number(row.audit_on_disk);
+    const coreLogical = Number(row.core_logical);
+    const auditLogical = Number(row.audit_logical);
+    return {
+      onDisk: { core: coreOnDisk, audit: auditOnDisk, total: coreOnDisk + auditOnDisk },
+      logical: { core: coreLogical, audit: auditLogical, total: coreLogical + auditLogical },
+    };
+  } finally {
+    await client.release();
+  }
+}