chore: remove deno.lock files and improve SQL queue handling in tests (#352)

# Remove deno.lock files and improve test cleanup

This PR removes the `deno.lock` files from the `cpu_intensive` and `max_concurrency` edge worker functions, which helps prevent dependency version conflicts.

It also improves the cleanup process in the end-to-end tests:
- Replaces try/catch blocks with conditional queue drops using SQL EXISTS checks
- Adds cleanup for stale worker entries in the `pgflow.workers` table
- Ensures proper queue recreation sequence in the performance test

These changes make the tests more reliable by ensuring a clean environment before each test run.

Author: jumski

pkgs/edge-worker/supabase/functions/cpu_intensive/deno.lock

@@ -20,9 +20,17 @@ Deno.test(
     await withSql(async (sql) => {
       await sql`CREATE SEQUENCE IF NOT EXISTS test_seq`;
       await sql`ALTER SEQUENCE test_seq RESTART WITH 1`;
+      await sql`
+        SELECT * FROM pgmq.drop_queue(${WORKER_NAME})
+        WHERE EXISTS (
+          SELECT 1 FROM pgmq.list_queues() WHERE queue_name = ${WORKER_NAME}
+        )
+      `;
       await sql`SELECT pgmq.create(${WORKER_NAME})`;
-      await sql`SELECT pgmq.drop_queue(${WORKER_NAME})`;
-      await sql`SELECT pgmq.create(${WORKER_NAME})`;
+      await sql`
+        DELETE FROM pgflow.workers
+        WHERE last_heartbeat_at < NOW() - INTERVAL '6 seconds'
+      `;
       await startWorker(WORKER_NAME);
       await waitFor(
         async () => {

pkgs/edge-worker/supabase/functions/max_concurrency/deno.lock

@@ -24,11 +24,12 @@ Deno.test(
   await withSql(async (sql) => {
     await sql`CREATE SEQUENCE IF NOT EXISTS test_seq`;
     await sql`ALTER SEQUENCE test_seq RESTART WITH 1`;
-    try {
-      await sql`SELECT pgmq.drop_queue(${WORKER_NAME})`;
-    } catch {
-      // ignore
-    }
+    await sql`
+      SELECT * FROM pgmq.drop_queue(${WORKER_NAME})
+      WHERE EXISTS (
+        SELECT 1 FROM pgmq.list_queues() WHERE queue_name = ${WORKER_NAME}
+      )
+    `;
     await sql`SELECT pgmq.create(${WORKER_NAME})`;
     await sql`
       DELETE FROM pgflow.workers