VIOLET V2e: Nautilus Binance data-client spike — GO (qualified)

90s BTCUSDT-PERP capture on the prod host, public data, dummy creds
(factory demands key env vars even for the data client; public endpoints
ignore the header). NT internal dispatch p50 0.23ms / p99 3.3ms — inside
VIOLET reactor budgets; 77 ticks/s sustained, zero drops. Qualifications:
NT owns its (uvloop) event loop -> recommended separate feed process
bridging via Zinc/HZ; exchange->cb p50 135ms is network+NTP+throttle, a
relative baseline only; PRODGREEN-era launcher API calls no longer exist
in 1.219 (FUTURES->USDT_FUTURE) — pin version + API smoke on adoption.
Exec-client spike remains keys-blocked; executor decision at the V4 gate.

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

prod/VIOLET_dev/nautilus_spike/spike_report.json

@@ -0,0 +1,46 @@
+{
+  "utc": "2026-06-12T22:53:35Z",
+  "nt_version": "1.219.0",
+  "build_seconds": 0.03,
+  "run_seconds": 100.13,
+  "time_to_first_tick_s": 1.13,
+  "trades": 847,
+  "quotes": 6885,
+  "ticks_per_s": 77.2,
+  "nt_dispatch": {
+    "name": "nt_dispatch",
+    "count": 7732,
+    "retained": 7732,
+    "overflow_dropped": 0,
+    "min_ms": 0.031212,
+    "p50_ms": 0.23393499999999998,
+    "p90_ms": 1.491198,
+    "p99_ms": 3.3297529999999997,
+    "p999_ms": 4.192426,
+    "max_ms": 4.358944
+  },
+  "exchange_to_cb": {
+    "name": "exchange_to_cb",
+    "count": 7732,
+    "retained": 7732,
+    "overflow_dropped": 0,
+    "min_ms": 129.48001399999998,
+    "p50_ms": 135.40447799999998,
+    "p90_ms": 826.803426,
+    "p99_ms": 1032.154036,
+    "p999_ms": 1034.66528,
+    "max_ms": 1034.749529
+  },
+  "inter_tick": {
+    "name": "inter_tick",
+    "count": 7731,
+    "retained": 7731,
+    "overflow_dropped": 0,
+    "min_ms": 0.019243,
+    "p50_ms": 0.05735,
+    "p90_ms": 9.996751999999999,
+    "p99_ms": 269.134981,
+    "p999_ms": 621.126351,
+    "max_ms": 1556.423341
+  }
+}