Claude sonnet 4.5 experiments

.github/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: CI
+
+on:
+  push:
+    branches: [ rust ]
+  pull_request:
+
+jobs:
+  nix:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: cachix/install-nix-action@v24
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+          extra_nix_config: |
+            accept-flake-config = true
+            experimental-features = nix-command flakes
+
+      - name: Nix flake check
+        run: nix flake check
+
+      - name: Build default package
+        run: nix build .