fix(pm): warn about unsupported --no-save for yarn update

crates/vp_cli_snapshots/tests/cli_snapshots/fixtures/command_update_yarn4/snapshots.toml

@@ -3,7 +3,7 @@ name = "command_update_yarn4"
 vp = "global"
 skip-platforms = ["windows"]
 steps = [
-  { argv = ["vp", "update", "testnpm2"], comment = "should update package within semver range" },
+  { argv = ["vp", "update", "testnpm2", "--no-save"], comment = "warn that --no-save is unsupported and continue with yarn up" },
   { argv = ["vpt", "print-file", "package.json"], continue-on-failure = true },
   { argv = ["vp", "rm", "testnpm2"], comment = "should to absolute latest version" },
   ["vp", "add", "testnpm2@1.0.0", "-D"],

crates/vp_cli_snapshots/tests/cli_snapshots/fixtures/command_update_yarn4/snapshots/command_update_yarn4.md

@@ -1,10 +1,11 @@
 # command_update_yarn4
 
-## `vp update testnpm2`
+## `vp update testnpm2 --no-save`
 
-should update package within semver range
+warn that --no-save is unsupported and continue with yarn up
 
 ```
+warn: yarn does not support --no-save.
 ➤ YN0000: · Yarn <version>
 ➤ YN0000: ┌ Resolution step
 ➤ YN0085: │ + test-vite-plus-package-optional@npm:1.0.0, test-vite-plus-package@npm:1.0.0, testnpm2@npm:1.0.1

crates/vp_cli_snapshots/tests/cli_snapshots/fixtures/command_update_yarn4_with_workspace/snapshots.toml

@@ -14,6 +14,6 @@ steps = [
   ["vpt", "stat-file", "node_modules", "--assert", "missing"],
   { argv = ["vp", "update", "testnpm2"], comment = "unfiltered update still updates all testnpm2 versions" },
   { argv = ["vpt", "print-file", "package.json", "packages/app/package.json", "packages/utils/package.json"], continue-on-failure = true },
-  { argv = ["vp", "update", "-r", "--no-save"], comment = "unfiltered recursive update remains supported" },
+  { argv = ["vp", "update", "-r", "--no-save"], comment = "warn that --no-save is unsupported while preserving recursive update" },
   { argv = ["vpt", "print-file", "package.json", "packages/app/package.json"], continue-on-failure = true },
 ]

crates/vp_cli_snapshots/tests/cli_snapshots/fixtures/command_update_yarn4_with_workspace/snapshots/command_update_yarn4_with_workspace.md

@@ -157,9 +157,10 @@ unfiltered update still updates all testnpm2 versions
 
 ## `vp update -r --no-save`
 
-unfiltered recursive update remains supported
+warn that --no-save is unsupported while preserving recursive update
 
 ```
+warn: yarn does not support --no-save.
 ➤ YN0000: · Yarn <version>
 ➤ YN0000: ┌ Resolution step
 ➤ YN0000: └ Completed

crates/vp_pm_cli/src/resolution/commands/update.rs

@@ -57,7 +57,7 @@ pub struct UpdateArgs {
     pub(crate) no_optional: bool,
 
     /// Update lockfile only, don't modify package.json
-    #[arg(long)]
+    #[arg(long, not_supported(yarn))]
     pub(crate) no_save: bool,
 
     /// Only update if package exists in workspace (pnpm-specific)
@@ -358,6 +358,22 @@ mod tests {
         assert_eq!(command.args, vec!["up", "react"]);
     }
 
+    #[test]
+    fn test_yarn_update_drops_no_save_with_warning() {
+        for (version, subcommand) in
+            [("1.22.0", "upgrade"), ("2.0.0", "up"), ("3.0.0", "up"), ("4.0.0", "up")]
+        {
+            let args = parse_args::<UpdateArgs>(["react", "--no-save"]).unwrap();
+            let resolution = resolve(&yarn(version), args);
+            let command = expect_run(resolution.outcome);
+
+            assert_eq!(command.program, "yarn");
+            assert_eq!(command.args, vec![subcommand, "react"]);
+            assert_eq!(resolution.diagnostics.len(), 1);
+            assert_eq!(resolution.diagnostics[0].message, "yarn does not support --no-save.");
+        }
+    }
+
     #[test]
     fn test_yarn_v4_update_interactive() {
         let options = UpdateArgs { interactive: true, ..Default::default() };