diff --git a/Justfile b/Justfile
new file mode 100644
index 0000000..ab8a5f3
--- /dev/null
+++ b/Justfile
@@ -0,0 +1,2 @@
+push BRANCH="main":
+    git push origin {{BRANCH}} && git push codeberg {{BRANCH}}
diff --git a/devbox.json b/devbox.json
index 24edac5..525c7b5 100644
--- a/devbox.json
+++ b/devbox.json
@@ -1,5 +1,6 @@
 {
   "packages": [
-    "gren@0.6.5"
+    "gren@0.6.5",
+    "just@latest"
   ]
 }
diff --git a/devbox.lock b/devbox.lock
new file mode 100644
index 0000000..586fc41
--- /dev/null
+++ b/devbox.lock
@@ -0,0 +1,122 @@
+{
+  "lockfile_version": "1",
+  "packages": {
+    "github:NixOS/nixpkgs/nixpkgs-unstable": {
+      "last_modified": "2026-08-14T15:04:01Z",
+      "resolved": "github:NixOS/nixpkgs/8be7bd0c83f12e2e3bbba07c9044d6fed9e66f7f?lastModified=1786719841&narHash=sha256-QcpQOT0NQEFkI77t%2BYXPZqDJc35iIodG7zinieOwFUg%3D"
+    },
+    "gren@0.6.5": {
+      "last_modified": "2026-05-21T08:15:18Z",
+      "resolved": "github:NixOS/nixpkgs/4a29d733e8a7d5b824c3d8c958a946a9867b3eb2#gren",
+      "source": "devbox-search",
+      "version": "0.6.5",
+      "systems": {
+        "aarch64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/m96p0cmn1y0cakh3r5plcjz03my7mmv2-gren-0.6.5",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/m96p0cmn1y0cakh3r5plcjz03my7mmv2-gren-0.6.5"
+        },
+        "aarch64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/ghpda1xfgkd9s10jizxwhwqc8v63j97x-gren-0.6.5",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/ghpda1xfgkd9s10jizxwhwqc8v63j97x-gren-0.6.5"
+        },
+        "x86_64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/linp359nf9b5v8lrfvhwvlahpvpbjvzc-gren-0.6.5",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/linp359nf9b5v8lrfvhwvlahpvpbjvzc-gren-0.6.5"
+        },
+        "x86_64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/24pk3cs84rqal9vm1axzni5aqh257hny-gren-0.6.5",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/24pk3cs84rqal9vm1axzni5aqh257hny-gren-0.6.5"
+        }
+      }
+    },
+    "just@latest": {
+      "last_modified": "2026-08-10T07:49:06Z",
+      "resolved": "github:NixOS/nixpkgs/d482ef84049d9b7276b83a06e4e4d76983830097#just",
+      "source": "devbox-search",
+      "version": "1.58.0",
+      "systems": {
+        "aarch64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/ihsdfh1na2rzqalygr82d5qikiahiwnd-just-1.58.0",
+              "default": true
+            },
+            {
+              "name": "man",
+              "path": "/nix/store/d7z9yd70lw20x6qqkrcks8f8s7zrydpw-just-1.58.0-man",
+              "default": true
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/p47q8293iafrgiwn7qk72vb4lbhklqvr-just-1.58.0-doc"
+            }
+          ],
+          "store_path": "/nix/store/ihsdfh1na2rzqalygr82d5qikiahiwnd-just-1.58.0"
+        },
+        "aarch64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/rd60rw62xy6kf5zxii6faq62703341pd-just-1.58.0",
+              "default": true
+            },
+            {
+              "name": "man",
+              "path": "/nix/store/prarbc4z1lq4w67bkm0kiqq2la1a2i6b-just-1.58.0-man",
+              "default": true
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/259q4k1fnkvc13g881m4rgah221z8j6b-just-1.58.0-doc"
+            }
+          ],
+          "store_path": "/nix/store/rd60rw62xy6kf5zxii6faq62703341pd-just-1.58.0"
+        },
+        "x86_64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/h9prkvik9i33agvfdyr7vhk6jg3w3r59-just-1.58.0",
+              "default": true
+            },
+            {
+              "name": "man",
+              "path": "/nix/store/wab754pfpxcfk0vg9i08hm2dglh7q16h-just-1.58.0-man",
+              "default": true
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/0y3793yd2hpa00pdf3z8p5r5xf4j6x79-just-1.58.0-doc"
+            }
+          ],
+          "store_path": "/nix/store/h9prkvik9i33agvfdyr7vhk6jg3w3r59-just-1.58.0"
+        }
+      }
+    }
+  }
+}