license switch agpl -> busl1, sprints work, new product advisories

docs/dev/performance-testing-playbook.md

@@ -48,6 +48,7 @@ Add a small Lua for timestamping at enqueue (atomic):
 ```lua
 -- KEYS[1]=stream
 -- ARGV[1]=enq_ts_ns, ARGV[2]=corr_id, ARGV[3]=payload
+-- Valkey uses the same redis.call Lua API.
 return redis.call('XADD', KEYS[1], '*',
   'corr', ARGV[2], 'enq', ARGV[1], 'p', ARGV[3])
 ```