build: align Node 22 guidance with 22.16 minimum

src/daemon/program-args.ts

@@ -153,7 +153,9 @@ async function resolveBinaryPath(binary: string): Promise<string> {
     if (binary === "bun") {
       throw new Error("Bun not found in PATH. Install bun: https://bun.sh");
     }
-    throw new Error("Node not found in PATH. Install Node 22+.");
+    throw new Error(
+      "Node not found in PATH. Install Node 24 (recommended) or Node 22 LTS (22.16+).",
+    );
   }
 }
 

src/daemon/runtime-paths.test.ts

@@ -251,7 +251,7 @@ describe("resolveSystemNodeInfo", () => {
       "/Users/me/.fnm/node-22/bin/node",
     );
 
-    expect(warning).toContain("below the required Node 22+");
+    expect(warning).toContain("below the required Node 22.16+");
     expect(warning).toContain(darwinNode);
   });
 });

src/daemon/runtime-paths.ts

@@ -151,7 +151,7 @@ export function renderSystemNodeWarning(
   }
   const versionLabel = systemNode.version ?? "unknown";
   const selectedLabel = selectedNodePath ? ` Using ${selectedNodePath} for the daemon.` : "";
-  return `System Node ${versionLabel} at ${systemNode.path} is below the required Node 22+.${selectedLabel} Install Node 22+ from nodejs.org or Homebrew.`;
+  return `System Node ${versionLabel} at ${systemNode.path} is below the required Node 22.16+.${selectedLabel} Install Node 24 (recommended) or Node 22 LTS from nodejs.org or Homebrew.`;
 }
 export { resolveStableNodePath };
 

src/daemon/service-audit.ts

@@ -362,7 +362,7 @@ async function auditGatewayRuntime(
         issues.push({
           code: SERVICE_AUDIT_CODES.gatewayRuntimeNodeSystemMissing,
           message:
-            "System Node 22+ not found; install it before migrating away from version managers.",
+            "System Node 22 LTS (22.16+) or Node 24 not found; install it before migrating away from version managers.",
           level: "recommended",
         });
       }