feat(gateway): report compute driver status

Signed-off-by: Evan Lezar <elezar@nvidia.com>

Author: elezar

architecture/compute-runtimes.md

@@ -26,6 +26,10 @@ The capability RPC reports driver identity, version, and the default sandbox
 image used by the gateway. GPU availability stays driver-local and is validated
 when a sandbox create request asks for GPU resources.
 
+The gateway records driver identity and version from the startup capability
+response. Authenticated gateway status reports that initialized driver snapshot
+instead of re-querying drivers on each status request.
+
 ## Runtime Summary
 
 | Runtime | Best fit | Sandbox boundary | Notes |

crates/openshell-cli/src/main.rs

@@ -531,9 +531,13 @@ enum Commands {
         command: Option<GatewayCommands>,
     },
 
-    /// Show gateway status and information.
+    /// Show live gateway status and runtime information.
     #[command(help_template = LEAF_HELP_TEMPLATE, next_help_heading = "FLAGS")]
-    Status,
+    Status {
+        /// Output format.
+        #[arg(short = 'o', long = "output", value_enum, default_value_t = OutputFormat::Table)]
+        output: OutputFormat,
+    },
 
     /// Manage inference configuration.
     #[command(after_help = INFERENCE_EXAMPLES, help_template = SUBCOMMAND_HELP_TEMPLATE)]
@@ -2083,20 +2087,14 @@ async fn main() -> Result<()> {
         // -----------------------------------------------------------
         // Top-level status
         // -----------------------------------------------------------
-        Some(Commands::Status) => {
+        Some(Commands::Status { output }) => {
             if let Ok(ctx) = resolve_gateway(&cli.gateway, &cli.gateway_endpoint) {
                 let mut tls = tls.with_gateway_name(&ctx.name);
                 apply_auth(&mut tls, &ctx.name);
-                run::gateway_status(&ctx.name, &ctx.endpoint, &tls).await?;
+                run::gateway_status(&ctx.name, &ctx.endpoint, &tls, output.as_str(), cli.verbose)
+                    .await?;
             } else {
-                println!("{}", "Gateway Status".cyan().bold());
-                println!();
-                println!("  {} No gateway configured.", "Status:".dimmed());
-                println!();
-                println!(
-                    "Register a gateway with: {}",
-                    "openshell gateway add <endpoint>".dimmed()
-                );
+                run::gateway_status_not_configured(output.as_str())?;
             }
         }
 
@@ -3463,7 +3461,20 @@ mod tests {
             .expect("global gateway flag should parse with subcommands");
 
         assert_eq!(cli.gateway.as_deref(), Some("demo"));
-        assert!(matches!(cli.command, Some(Commands::Status)));
+        assert!(matches!(cli.command, Some(Commands::Status { .. })));
+    }
+
+    #[test]
+    fn status_accepts_output_json() {
+        let cli = Cli::try_parse_from(["openshell", "status", "-o", "json"])
+            .expect("status -o json should parse");
+
+        assert!(matches!(
+            cli.command,
+            Some(Commands::Status {
+                output: OutputFormat::Json
+            })
+        ));
     }
 
     #[test]