Initial commit: Arb Pulse monolith with CI and optional Fly deploy.

Real-time BTC cross-exchange arbitrage detection (Kraken, Bybit, OKX, Binance)
with React dashboard, GitHub Actions CI, and documented Fly.io deploy workflow.

Co-authored-by: Cursor <cursoragent@cursor.com>

.github/workflows/fly-deploy.yml

@@ -0,0 +1,18 @@
+# Optional Fly.io deploy — manual only. Production deploy is on Render.
+# See https://fly.io/docs/app-guides/continuous-deployment-with-github-actions/
+# Requires FLY_API_TOKEN secret. Docs: .cursor/rules/fly-deploy.mdc
+
+name: Fly Deploy
+on:
+  workflow_dispatch:
+jobs:
+  deploy:
+    name: Deploy app
+    runs-on: ubuntu-latest
+    concurrency: deploy-group    # optional: ensure only one action runs at a time
+    steps:
+      - uses: actions/checkout@v4
+      - uses: superfly/flyctl-actions/setup-flyctl@master
+      - run: flyctl deploy --remote-only
+        env:
+          FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}