Fix KID default suffix and guard exit code alignment

- Change default KID suffix from -key-v1 to -key-1 to match Go SDK and Console
- Change guard script exit code from 2 to 1 to match Python and Go SDKs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/plugins/hook-template.ts

@@ -344,7 +344,7 @@ async function main() {
     if (age < CACHE_TTL_MS) {
       if (cache.status === 'frozen') {
         process.stderr.write('Agent "' + AGENT_NAME + '" is frozen by Elydora. Tool execution blocked.\\n');
-        process.exitCode = 2;
+        process.exitCode = 1;
       }
       return; // Cache is fresh — use cached result
     }
@@ -388,7 +388,7 @@ async function main() {
 
       if (agentStatus === 'frozen') {
         process.stderr.write('Agent "' + AGENT_NAME + '" is frozen by Elydora. Tool execution blocked.\\n');
-        process.exitCode = 2;
+        process.exitCode = 1;
       }
     }
   } catch {