docs(agents): escalation_timeout default is 0 (wait indefinitely); nonzero opts into a bounded wait

Agents.md

@@ -88,7 +88,7 @@ max_agent_depth: 3                   # Max nesting depth (prevents runaway)
 inject_spawn_instructions: true      # Inject spawning instructions into system prompt
 summarization_model: null            # Model for summarizing sub-agent output (e.g. 'openai:gpt-4o-mini')
 summarization_threshold: 4000        # Char count above which sub-agent output is summarized
-escalation_timeout: 300              # Seconds sub-agents wait for escalated user input (default: 5 min)
+escalation_timeout: 0                # 0 = wait indefinitely for escalated user input (default); N = give up after N seconds
 ```
 
 As mentioned previously: Agents utilize function calling to extend a model's capabilities. However, agents operate in 
@@ -572,7 +572,7 @@ see the [domain-reviewer](https://github.com/Dark-Alex-17/coyote/blob/main/asset
 | `inject_spawn_instructions` | boolean           | `true`        | Inject the default spawning instructions into the agent's system prompt        |
 | `summarization_model`       | string            | current model | Model to use for summarizing long sub-agent output (e.g. `openai:gpt-4o-mini`) |
 | `summarization_threshold`   | integer           | `4000`        | Character count above which sub-agent output is summarized before returning    |
-| `escalation_timeout`        | integer           | `300`         | Seconds a sub-agent waits for an escalated user interaction response           |
+| `escalation_timeout`        | integer           | `0`           | Seconds a sub-agent waits for an escalated user interaction response; `0` = wait indefinitely (default) |
 
 **Example configuration:**
 ```yaml
@@ -838,9 +838,10 @@ the request is **automatically escalated** to the root agent:
    `agent__reply_escalation` to unblock the child
 4. The child receives the reply and continues
 
-The escalation timeout is configurable via `escalation_timeout` in the agent's `config.yaml` (default: 300
-seconds / 5 minutes). If the timeout expires, the child receives a fallback message asking it to use its
-best judgment.
+The escalation wait is configurable via `escalation_timeout` in the agent's `config.yaml` (default: `0` =
+wait indefinitely, so autonomous runs never lose an approval while the user is away). When a nonzero
+timeout is configured and expires, the child receives a fallback message asking it to use its best
+judgment.
 
 | Tool                      | Description                                                              |
 |---------------------------|--------------------------------------------------------------------------|