fix(nats): use explicit subject prefixes — WorkQueue retention disallows > wildcard

crates/adapters/nats/src/lib.rs

@@ -7,7 +7,9 @@ use std::sync::Arc;
 
 // Stream name and subjects used by both publisher and consumer.
 const STREAM_NAME: &str = "THOUGHTS_EVENTS";
-const STREAM_SUBJECTS: &[&str] = &[">"];
+// Explicit prefixes instead of ">" — NATS WorkQueue retention disallows
+// the catch-all ">" wildcard without also setting no_ack = true.
+const STREAM_SUBJECTS: &[&str] = &["thoughts.>", "likes.>", "boosts.>", "follows.>", "users.>"];
 const CONSUMER_NAME: &str = "worker";
 // Redelivery timeout: if a message is not acked within this time, NATS redelivers it.
 const ACK_WAIT_SECS: u64 = 30;