perf(companion): 5s discovery timeout — fresh-join route lookups fail fast — 0.5.14

First lookups fire before the phone's tree position settles and are
doomed; at 10s completion timeout each one cost 10s before the 1s
retry could fire (observed 19s to a route on a fresh 5G join, session
3ms after the route — discovery convergence was the whole cost).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Android/rust/archy-fips-core/src/mesh.rs

@@ -101,6 +101,11 @@ pub fn build_config(secret: &str, peers: Vec<PeerConfig>, listen_port: u16) -> C
     cfg.node.discovery.backoff_max_secs = 30;
     cfg.node.discovery.retry_interval_secs = 2;
     cfg.node.discovery.max_attempts = 3;
+    // Lookups launched before the tree position settles are doomed; a 10s
+    // completion timeout made each one cost 10s before the 1s retry could
+    // fire (observed: 19s to a route on a fresh join). Fail fast instead —
+    // the resend-within-window above still gives each attempt two shots.
+    cfg.node.discovery.timeout_secs = 5;
     cfg.peers = peers;
     cfg
 }