fix(task_await): honor timeout_secs=0 for agent tasks

Previously, timeout_secs=0 was treated as 'unset' and fell back to
the default 10-minute timeout for agent tasks (while bash tasks
correctly supported non-blocking 0-second waits). Now timeout_secs=0
is respected for both agent and bash tasks, enabling immediate
non-blocking checks when needed.

Addresses Codex review feedback.

Change-Id: Iad7d72a342c9ae6c86ffcade4f7bc34e846376c5
Signed-off-by: Thomas Kosiewski <tk@coder.com>

Author: ThomasK33

src/node/services/tools/task_await.ts

@@ -13,8 +13,8 @@ import {
 
 function coerceTimeoutMs(timeoutSecs: unknown): number | undefined {
   if (typeof timeoutSecs !== "number" || !Number.isFinite(timeoutSecs)) return undefined;
+  if (timeoutSecs < 0) return undefined;
   const timeoutMs = Math.floor(timeoutSecs * 1000);
-  if (timeoutMs <= 0) return undefined;
   return timeoutMs;
 }