fix(models): propagate provider filter when specified before list command

Fixes bounty issue #1687

When running 'cortex models openai list', the provider argument was captured
by ModelsCli.provider but ignored when the List subcommand was matched.
Now the provider filter is passed through to run_list() using args.provider.or(self.provider),
supporting both 'cortex models openai list' and 'cortex models list openai' orderings.

Author: factorydroid

cortex-cli/src/models_cmd.rs

@@ -62,7 +62,13 @@ impl ModelsCli {
     /// Run the models command.
     pub async fn run(self) -> Result<()> {
         match self.subcommand {
-            Some(ModelsSubcommand::List(args)) => run_list(args.provider, args.json).await,
+            Some(ModelsSubcommand::List(args)) => {
+                // Use args.provider if specified, otherwise fall back to self.provider
+                // This handles both `cortex models openai list` and `cortex models list openai`
+                let provider = args.provider.or(self.provider);
+                let json = args.json || self.json;
+                run_list(provider, json).await
+            }
             None => {
                 // Default: list models with optional provider filter
                 run_list(self.provider, self.json).await