logging: emit agent/session meta at command start

src/auto-reply/command-reply.ts

@@ -195,6 +195,16 @@ export async function runCommandReply(
   logVerbose(
     `Running command auto-reply: ${finalArgv.join(" ")}${reply.cwd ? ` (cwd: ${reply.cwd})` : ""}`,
   );
+  logger.info(
+    {
+      agent: agentKind,
+      sessionId: templatingCtx.SessionId,
+      newSession: isNewSession,
+      cwd: reply.cwd,
+      command: finalArgv.slice(0, -1), // omit body to reduce noise
+    },
+    "command auto-reply start",
+  );
 
   const started = Date.now();
   let queuedMs: number | undefined;