test: add Bruno API test collections for device authentication

- Device token regeneration tests (success, forbidden, not found, unauthorized)
- OPDS authentication tests (Bearer token, query token)
- Kobo sync tests with token authentication
- Test various authentication methods and error cases

internal/database/queries/queries.sql

@@ -769,6 +769,14 @@ SET
 WHERE id = $1
 RETURNING *;
 
+-- name: UpdateDeviceAuthToken :one
+UPDATE devices
+SET
+    auth_token = $2,
+    updated_at = NOW()
+WHERE id = $1
+RETURNING *;
+
 -- name: RevokeDevice :exec
 UPDATE devices
 SET