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fix: thread safety for concurrent subagent delegation (#1672)

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* fix: thread safety for concurrent subagent delegation

Four thread-safety fixes that prevent crashes and data races when
running multiple subagents concurrently via delegate_task:

1. Remove redirect_stdout/stderr from delegate_tool — mutating global
   sys.stdout races with the spinner thread when multiple children start
   concurrently, causing segfaults. Children already run with
   quiet_mode=True so the redirect was redundant.

2. Split _run_single_child into _build_child_agent (main thread) +
   _run_single_child (worker thread). AIAgent construction creates
   httpx/SSL clients which are not thread-safe to initialize
   concurrently.

3. Add threading.Lock to SessionDB — subagents share the parent's
   SessionDB and call create_session/append_message from worker threads
   with no synchronization.

4. Add _active_children_lock to AIAgent — interrupt() iterates
   _active_children while worker threads append/remove children.

5. Add _client_cache_lock to auxiliary_client — multiple subagent
   threads may resolve clients concurrently via call_llm().

Based on PR #1471 by peteromallet.

* feat: Honcho base_url override via config.yaml + quick command alias type

Two features salvaged from PR #1576:

1. Honcho base_url override: allows pointing Hermes at a remote
   self-hosted Honcho deployment via config.yaml:

     honcho:
       base_url: "http://192.168.x.x:8000"

   When set, this overrides the Honcho SDK's environment mapping
   (production/local), enabling LAN/VPN Honcho deployments without
   requiring the server to live on localhost. Uses config.yaml instead
   of env var (HONCHO_URL) per project convention.

2. Quick command alias type: adds a new 'alias' quick command type
   that rewrites to another slash command before normal dispatch:

     quick_commands:
       sc:
         type: alias
         target: /context

   Supports both CLI and gateway. Arguments are forwarded to the
   target command.

Based on PR #1576 by redhelix.

---------

Co-authored-by: peteromallet <peteromallet@users.noreply.github.com>
Co-authored-by: redhelix <redhelix@users.noreply.github.com>
This commit is contained in:
Teknium
2026-03-17 02:53:33 -07:00
committed by GitHub
parent fd61ae13e5
commit 1d5a39e002
14 changed files with 397 additions and 272 deletions
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13
gateway/run.py
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@@ -1421,8 +1421,19 @@ class GatewayRunner:
return f"Quick command error: {e}"
else:
return f"Quick command '/{command}' has no command defined."
elif qcmd.get("type") == "alias":
target = qcmd.get("target", "").strip()
if target:
target = target if target.startswith("/") else f"/{target}"
target_command = target.lstrip("/")
user_args = event.get_command_args().strip()
event.text = f"{target} {user_args}".strip()
command = target_command
# Fall through to normal command dispatch below
else:
return f"Quick command '/{command}' has no target defined."
else:
return f"Quick command '/{command}' has unsupported type (only 'exec' is supported)."
return f"Quick command '/{command}' has unsupported type (supported: 'exec', 'alias')."
# Skill slash commands: /skill-name loads the skill and sends to agent
if command: