Do not allow uv add --group ... --script (#13997)

## Summary

Closes #13988 

## Test Plan

`cargo test`

crates/uv-cli/src/lib.rs

@@ -3516,7 +3516,12 @@ pub struct AddArgs {
     /// Add the requirements to the development dependency group.
     ///
     /// This option is an alias for `--group dev`.
-    #[arg(long, conflicts_with("optional"), conflicts_with("group"))]
+    #[arg(
+        long,
+        conflicts_with("optional"),
+        conflicts_with("group"),
+        conflicts_with("script")
+    )]
     pub dev: bool,
 
     /// Add the requirements to the package's optional dependencies for the specified extra.
@@ -3530,7 +3535,12 @@ pub struct AddArgs {
     /// Add the requirements to the specified dependency group.
     ///
     /// These requirements will not be included in the published metadata for the project.
-    #[arg(long, conflicts_with("dev"), conflicts_with("optional"))]
+    #[arg(
+        long,
+        conflicts_with("dev"),
+        conflicts_with("optional"),
+        conflicts_with("script")
+    )]
     pub group: Option<GroupName>,
 
     /// Add the requirements as editable.
@@ -3677,11 +3687,21 @@ pub struct RemoveArgs {
     pub dev: bool,
 
     /// Remove the packages from the project's optional dependencies for the specified extra.
-    #[arg(long, conflicts_with("dev"), conflicts_with("group"))]
+    #[arg(
+        long,
+        conflicts_with("dev"),
+        conflicts_with("group"),
+        conflicts_with("script")
+    )]
     pub optional: Option<ExtraName>,
 
     /// Remove the packages from the specified dependency group.
-    #[arg(long, conflicts_with("dev"), conflicts_with("optional"))]
+    #[arg(
+        long,
+        conflicts_with("dev"),
+        conflicts_with("optional"),
+        conflicts_with("script")
+    )]
     pub group: Option<GroupName>,
 
     /// Avoid syncing the virtual environment after re-locking the project.

crates/uv/tests/it/edit.rs

@@ -2013,6 +2013,42 @@ fn remove_both_dev() -> Result<()> {
     Ok(())
 }
 
+/// Do not allow add for groups in scripts.
+#[test]
+fn disallow_group_script_add() -> Result<()> {
+    let context = TestContext::new("3.12");
+
+    let script = context.temp_dir.child("main.py");
+    script.write_str(indoc! {r#"
+        # /// script
+        # requires-python = ">=3.13"
+        # dependencies = []
+        #
+        # ///
+    "#})?;
+
+    uv_snapshot!(context.filters(), context
+        .add()
+        .arg("--group")
+        .arg("dev")
+        .arg("anyio==3.7.0")
+        .arg("--script")
+        .arg("main.py"), @r###"
+    success: false
+    exit_code: 2
+    ----- stdout -----
+
+    ----- stderr -----
+    error: the argument '--group <GROUP>' cannot be used with '--script <SCRIPT>'
+
+    Usage: uv add --cache-dir [CACHE_DIR] --group <GROUP> --exclude-newer <EXCLUDE_NEWER> <PACKAGES|--requirements <REQUIREMENTS>>
+
+    For more information, try '--help'.
+    "###);
+
+    Ok(())
+}
+
 /// `uv remove --group dev` should remove from both `dev-dependencies` and `dependency-groups.dev`.
 #[test]
 fn remove_both_dev_group() -> Result<()> {