Rakefile jq update logic extracted into reusable
update_dotslash_release method shared by all three tools.

Assisted-by: Claude Opus 4.6 via pi

diff --git a/Rakefile b/Rakefile
index 91401d3c..6e77fe82 100644
--- a/Rakefile
+++ b/Rakefile
@@ -44,40 +44,41 @@ namespace :sync do
   end
 end
 
+require "json"
+require "open3"
+
+def update_dotslash_release(name:, repo:, path: name, &asset)
+  release_json, = Open3.capture2("gh", "release", "view", "--repo", repo, "--json", "tagName")
+  tag = JSON.parse(release_json)["tagName"]
+  asset_name = asset.call(tag)
+
+  url = "https://github.com/#{repo}/releases/download/#{tag}/#{asset_name}"
+  entry_json, = Open3.capture2("dotslash", "--", "create-url-entry", url)
+  entry = JSON.parse(entry_json)
+
+  platform = {
+    size: entry["size"],
+    hash: "blake3",
+    digest: entry["digest"],
+    path: path,
+    providers: [
+      { url: url },
+      { type: "github-release", repo: "https://github.com/#{repo}", tag: tag, name: asset_name },
+    ],
+  }
+  platform[:format] = entry["format"] if entry["format"] && !entry["format"].start_with?("TODO")
+
+  dotslash = { name: name, platforms: { "macos-aarch64" => platform } }
+  File.write("bin/#{name}", "#!/usr/bin/env dotslash\n\n#{JSON.pretty_generate(dotslash)}\n")
+end
+
 desc "Update dotslash files from their GitHub releases"
 task :update_dotslash do
   sh "gh release download --repo kejadlen/pinch --pattern pinch --output bin/pinch --clobber"
 
-  require "json"
-  require "open3"
-
-  # Update jq dotslash file with latest release
-  release_json, = Open3.capture2("gh", "release", "view", "--repo", "jqlang/jq", "--json", "tagName,assets")
-  release = JSON.parse(release_json)
-  tag = release["tagName"]
-  asset = release["assets"].find { |a| a["name"] == "jq-macos-arm64" }
-
-  url = "https://github.com/jqlang/jq/releases/download/#{tag}/jq-macos-arm64"
-  digest, = Open3.capture2("dotslash", "--", "create-url-entry", url)
-  entry = JSON.parse(digest)
-
-  dotslash = {
-    name: "jq",
-    platforms: {
-      "macos-aarch64" => {
-        size: entry["size"],
-        hash: "blake3",
-        digest: entry["digest"],
-        path: "jq",
-        providers: [
-          { url: url },
-          { type: "github-release", repo: "https://github.com/jqlang/jq", tag: tag, name: "jq-macos-arm64" },
-        ],
-      },
-    },
-  }
-
-  File.write("bin/jq", "#!/usr/bin/env dotslash\n\n#{JSON.pretty_generate(dotslash)}\n")
+  update_dotslash_release(name: "jq", repo: "jqlang/jq") { "jq-macos-arm64" }
+  update_dotslash_release(name: "jj", repo: "jj-vcs/jj") { |tag| "jj-#{tag}-aarch64-apple-darwin.tar.gz" }
+  update_dotslash_release(name: "just", repo: "casey/just") { |tag| "just-#{tag}-aarch64-apple-darwin.tar.gz" }
 end
 
 desc "Upgrade neovim"
diff --git a/bin/jj b/bin/jj
new file mode 100755
index 00000000..c2cf11de
--- /dev/null
+++ b/bin/jj
@@ -0,0 +1,25 @@
+#!/usr/bin/env dotslash
+
+{
+  "name": "jj",
+  "platforms": {
+    "macos-aarch64": {
+      "size": 9539094,
+      "hash": "blake3",
+      "digest": "b02f04d09557b41e3bf0a84a0bc7421c2b67bdbabccafc3ca00773e786e8eedc",
+      "path": "jj",
+      "providers": [
+        {
+          "url": "https://github.com/jj-vcs/jj/releases/download/v0.39.0/jj-v0.39.0-aarch64-apple-darwin.tar.gz"
+        },
+        {
+          "type": "github-release",
+          "repo": "https://github.com/jj-vcs/jj",
+          "tag": "v0.39.0",
+          "name": "jj-v0.39.0-aarch64-apple-darwin.tar.gz"
+        }
+      ],
+      "format": "tar.gz"
+    }
+  }
+}
diff --git a/bin/just b/bin/just
new file mode 100755
index 00000000..e9a61eca
--- /dev/null
+++ b/bin/just
@@ -0,0 +1,25 @@
+#!/usr/bin/env dotslash
+
+{
+  "name": "just",
+  "platforms": {
+    "macos-aarch64": {
+      "size": 1693949,
+      "hash": "blake3",
+      "digest": "3c5b267ac495f91d908a92c67a5f45ee7014c6f90dc7c9ff6a1ebc6e07dbdf5d",
+      "path": "just",
+      "providers": [
+        {
+          "url": "https://github.com/casey/just/releases/download/1.46.0/just-1.46.0-aarch64-apple-darwin.tar.gz"
+        },
+        {
+          "type": "github-release",
+          "repo": "https://github.com/casey/just",
+          "tag": "1.46.0",
+          "name": "just-1.46.0-aarch64-apple-darwin.tar.gz"
+        }
+      ],
+      "format": "tar.gz"
+    }
+  }
+}
diff --git a/bin/pinch b/bin/pinch
new file mode 100644
index 00000000..87e38753
--- /dev/null
+++ b/bin/pinch
@@ -0,0 +1,25 @@
+#!/usr/bin/env dotslash
+
+{
+  "name": "pinch",
+  "platforms": {
+    "macos-aarch64": {
+      "size": 919512,
+      "hash": "blake3",
+      "digest": "d5fa8d08d16c0622c4b56af2b7adf780433e5f3f972c7040bd104694700f1320",
+      "format": "tar.gz",
+      "path": "pinch",
+      "providers": [
+        {
+          "url": "https://github.com/kejadlen/pinch/releases/download/v2026-02-19%2B5d7c190/pinch-aarch64-apple-darwin.tar.gz"
+        },
+        {
+          "type": "github-release",
+          "repo": "https://github.com/kejadlen/pinch",
+          "tag": "v2026-02-19+5d7c190",
+          "name": "pinch-aarch64-apple-darwin.tar.gz"
+        }
+      ]
+    }
+  }
+}