chore: disable automated nix shell activation

.github/workflows/copilot-setup-steps.yml

@@ -15,22 +15,22 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Install Nix
-        uses: cachix/install-nix-action@v31
-        with:
-          nix_path: nixpkgs=channel:nixos-unstable
+      # TODO this will cause all of copilot agents Bash tool calls to silently hang (which it won't complain about)
+      # - name: Install Nix
+      #   uses: cachix/install-nix-action@v31
+      #   with:
+      #     nix_path: nixpkgs=channel:nixos-unstable
+      # - uses: nicknovitski/nix-develop@v1
 
-      - uses: nicknovitski/nix-develop@v1
+      # - name: Cache UV dependencies
+      #   uses: actions/cache@v4
+      #   with:
+      #     path: |
+      #       ~/.cache/uv
+      #       .venv
+      #     key: ${{ runner.os }}-uv-${{ hashFiles('uv.lock') }}
+      #     restore-keys: |
+      #       ${{ runner.os }}-uv-
 
-      - name: Cache UV dependencies
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/.cache/uv
-            .venv
-          key: ${{ runner.os }}-uv-${{ hashFiles('uv.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-uv-
-
-      - name: Install dependencies
-        run: uv sync --extra dev
+      # - name: Install dependencies
+      #   run: uv sync --extra dev