fix(webapp): don't crash the test page when a dev worker version isn't numeric

The dev task list sorted workers by casting their version to an int
array, which failed with a database error if any worker's version
isn't dot-numeric. Non-numeric versions now fall back to creation
order instead of erroring.

Author: samejr

apps/webapp/app/presenters/v3/TestPresenter.server.ts

@@ -43,7 +43,16 @@ export class TestPresenter extends BasePresenter {
       >`WITH workers AS (
           SELECT
                 bw.*,
-                ROW_NUMBER() OVER(ORDER BY string_to_array(bw.version, '.')::int[] DESC) AS rn
+                -- Only dot-numeric versions ("20260724.3") sort numerically; anything else
+                -- (e.g. seeded/simulated workers with arbitrary version strings) would fail the
+                -- int[] cast, so those fall back to creation order instead of erroring.
+                ROW_NUMBER() OVER(
+                  ORDER BY
+                    (CASE WHEN bw.version ~ '^[0-9]+([.][0-9]+)*$'
+                          THEN string_to_array(bw.version, '.')::int[]
+                     END) DESC NULLS LAST,
+                    bw."createdAt" DESC
+                ) AS rn
           FROM
                 ${sqlDatabaseSchema}."BackgroundWorker" bw
           WHERE "runtimeEnvironmentId" = ${envId}