SOP headless dispatch cannot execute steps in priority_based or auto mode on zeroclaw 0.7.5

[librawei]

Hi Team,

I encountered an issue with SOP execution in zeroclaw 0.7.5.

Environment:

Version: zeroclaw 0.7.5
SOP execution mode: priority_based or auto
Trigger source: MQTT
SOP validation status: PASS

Problem:
The SOP is successfully matched and started after MQTT trigger reception, but execution stops at the first step with the warning:

WARN zeroclaw_runtime::sop::dispatch:
SOP headless dispatch: run run-1779348757828-0001 ('factory-device-monitor')
ready for step 1 'esp32_ai_decision'
but no agent loop available to execute

Observed behavior:

• SOP is detected correctly
• SOP run is created successfully
• Audit log is generated
• Validation passes successfully
• However, no actual step execution occurs because the runtime reports no available agent loop

Logs:

2026-05-21T07:32:37.828411Z  INFO zeroclaw_runtime::sop::dispatch:
SOP dispatch: 1 SOP(s) matched: ["factory-device-monitor"]
        
2026-05-21T07:32:37.828518Z  INFO zeroclaw_runtime::sop::engine:
SOP run run-1779348757828-0001 started for 'factory-device-monitor'
        
2026-05-21T07:32:37.828564Z  INFO zeroclaw_runtime::sop::dispatch:
SOP dispatch: started 'factory-device-monitor'
run run-1779348757828-0001 (action: ExecuteStep)
        
2026-05-21T07:32:37.828611Z  INFO zeroclaw_runtime::sop::audit:
SOP audit: run run-1779348757828-0001 started for 'factory-device-monitor'
        
2026-05-21T07:32:37.828641Z  WARN zeroclaw_runtime::sop::dispatch:
SOP headless dispatch: run run-1779348757828-0001 ('factory-device-monitor')
ready for step 1 'esp32_ai_decision'
but no agent loop available to execute

SOP configuration:

[sop]
name = "factory-device-monitor"
description = "Automated telemetry analysis and reboot pipeline for factory IoT nodes"
version = "1.0.0"
priority = "high"
execution_mode = "priority_based"
cooldown_secs = 60
max_concurrent = 10
        
[[triggers]]
type = "mqtt"
topic = "factory/devices/#"

Validation result:

# zeroclaw sop validate
✅ factory-device-monitor — valid
All SOPs passed validation.

Loaded SOP:

# zeroclaw sop list
Loaded SOPs (1):
factory-device-monitor v1.0.0 [high]
Mode: priority_based
Steps: 6
Triggers: mqtt:factory/devices/#

Questions:

1. Is an additional agent runtime/service required for SOP step execution in priority_based mode?
2. Is there a missing configuration related to the agent loop executor?
3. Does headless SOP dispatch currently support autonomous step execution?
4. Is this expected behavior in version 0.7.5?

Thanks.