perf(companion): fast-connect mesh profile — 5G cold connect 40s+ → 5.4s — 0.5.13

Stock fips pacing is tuned for always-on routers: a failed discovery
backs off 30s, session resends gap out to 8-16s, dead links redial at
5s→300s. On a phone that stacked into a 40s+ first connect over
cellular. Config-only tuning in build_config (no fork changes):
discovery backoff 1s (cap 30s), session resends 400ms x1.5 (10 max),
link redial 1s (cap 30s). Measured on-device: anchor +1.2s, node
session +5.4s from cold start over 5G.

Ops note: vps2 anchor daemon had degraded again (multi-second link
RTTs after 15h uptime) — restarted, recycle tightened 1d → 6h.

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

Android/app/build.gradle.kts

@@ -11,8 +11,8 @@ android {
         applicationId = "com.archipelago.app"
         minSdk = 26
         targetSdk = 35
-        versionCode = 32
-        versionName = "0.5.12"
+        versionCode = 33
+        versionName = "0.5.13"
 
         vectorDrawables {
             useSupportLibrary = true

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

@@ -85,6 +85,22 @@ pub fn build_config(secret: &str, peers: Vec<PeerConfig>, listen_port: u16) -> C
     });
     // TCP with no bind_addr = outbound-only (fallback when UDP is blocked).
     cfg.transports.tcp = TransportInstances::Single(Default::default());
+    // Fast-connect profile — a phone opens the app and expects the node NOW.
+    // Stock pacing is tuned for always-on routers: a failed discovery backs
+    // off 30s, session resends gap out to 8-16s, dead links redial at
+    // 5s→300s. Over 5G that stacked into a ~40s first connect (observed
+    // 2026-07-24: anchor +10s, session +40s). Retries only fire while a
+    // link/session is down, so steady-state traffic is unchanged.
+    cfg.node.retry.base_interval_secs = 1; // dead-link redial 1s,2s,4s…
+    cfg.node.retry.max_backoff_secs = 30; // …capped at 30s, not 5 min
+    cfg.node.retry.max_retries = 30;
+    cfg.node.rate_limit.handshake_resend_interval_ms = 400;
+    cfg.node.rate_limit.handshake_resend_backoff = 1.5;
+    cfg.node.rate_limit.handshake_max_resends = 10;
+    cfg.node.discovery.backoff_base_secs = 1; // failed lookup retries fast
+    cfg.node.discovery.backoff_max_secs = 30;
+    cfg.node.discovery.retry_interval_secs = 2;
+    cfg.node.discovery.max_attempts = 3;
     cfg.peers = peers;
     cfg
 }