change token path and add workflow file

.forgejo/workflows/activate.yml

@@ -0,0 +1,13 @@
+name: Activate NixOS Configuration On Push
+on:
+  push:
+    branches:
+      - main
+jobs:
+  deploy:
+    runs-on: nixos-server
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Build and activate system
+        run: sudo nixos-rebuild switch --flake .#homelab

modules/system/homelab/git.nix

@@ -58,7 +58,7 @@
       enable = true;
       name = "nixos-server-runner";
       url = "https://git.proxy.${homelab.domain}";
-      tokenFile = "/mnt/data/forgejo/runner/nixos_deploy_runner_token"; 
+      tokenFile = "/root/forgejo-token-runner"; 
       labels = [ "nixos-server" ];
       hostPackages = with pkgs; [ bash coreutils git nix ];
     };