Initial working state: CL3.5 complete (Plesk sync + suspend/unsuspend)

supabase/migrations/CL35_auto_sync_job_locks.sql

@@ -0,0 +1,49 @@
+-- CL3.5: background auto-sync lock primitives
+
+create table if not exists public.job_locks (
+  job_name text primary key,
+  locked_at timestamptz not null default now(),
+  locked_by text,
+  expires_at timestamptz not null
+);
+
+create or replace function public.acquire_job_lock(
+  p_job_name text,
+  p_locked_by text,
+  p_ttl_seconds integer default 240
+)
+returns boolean
+language plpgsql
+security definer
+set search_path = public
+as $$
+declare
+  v_acquired boolean := false;
+begin
+  insert into public.job_locks (job_name, locked_by, locked_at, expires_at)
+  values (
+    p_job_name,
+    p_locked_by,
+    now(),
+    now() + make_interval(secs => p_ttl_seconds)
+  )
+  on conflict (job_name)
+  do update
+    set locked_by = excluded.locked_by,
+        locked_at = excluded.locked_at,
+        expires_at = excluded.expires_at
+  where public.job_locks.expires_at < now();
+
+  get diagnostics v_acquired = row_count;
+  return v_acquired;
+end;
+$$;
+
+create or replace function public.release_job_lock(p_job_name text)
+returns void
+language sql
+security definer
+set search_path = public
+as $$
+  delete from public.job_locks where job_name = p_job_name;
+$$;