GitHub Issue: delegate_task HOME env bug

Repo: NousResearch/hermes-agent
Labels: bug

Title

delegate_task subagent environments lack $HOME, causing cascading Path.home() failures

Body

Bug Description

When using delegate_task, spawned subagent environments do not inherit the $HOME environment variable. This causes Path.home() and os.path.expanduser() to fail in hermes_tools during API calls, triggering retry loops that consume ~40x more time than actual compute.

Steps to Reproduce

1. Call delegate_task with a task that requires hermes_tools (e.g., read_file, terminal)
2. Observe error: Could not determine home directory
3. Subagent retries, each retry takes ~10-15s of recovery overhead

Expected Behavior

Subagent environments should inherit $HOME from the parent process, or hermes_tools should include a fallback:

home = os.environ.get('HOME') or os.path.expanduser('~') or '/home/openclaw'

Actual Behavior

• 6 API call failures in a 9-call task
• 869s total runtime, ~20s actual compute, ~849s retry/recovery overhead
• Error originates from pathlib.Path.home() when HOME is unset

Environment

• OS: Linux (Ubuntu, VPS)
• Hermes Agent: latest (NousResearch/hermes-agent)
• Python: 3.12
• Tool: delegate_task with toolsets=['terminal','file','web']

Evidence

Session log shows repeated pattern:

❌ Error during OpenAI-compatible API call #6: Could not determine home directory.

Proposed Fix

Either:

1. delegate_task injects HOME into subagent process environment before spawning
2. hermes_tools adds fallback chain: $HOME → getent passwd → /home/openclaw

The init scripts (init_run.py, validate_run.py) already implement this fallback — the same pattern should apply to the tool runtime.