Port Hermes Gateway activity events to main#90
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The hermes_sentinel bridge was final-reply-only: no tool_call, no status,
no AX_GATEWAY_EVENT lines, so Gateway-managed hermes runtimes produced
blank phase bubbles in the UI even though the underlying AIAgent emits
tool_progress callbacks internally.
This pipes hermes's `tool_progress_callback` (AIAgent constructor param,
fires before each tool with (name, args_preview, args_dict)) into
AX_GATEWAY_EVENT `tool_start` / `tool_result` pairs so the UI chip shows
what the agent is doing in real time. Also emits `status` events for
started → thinking → completed / error phases wrapping the run, and
normalizes any run_conversation exception into a clean `error` status
event instead of letting the traceback escape to stderr (which Gateway
would otherwise post as the reply body).
Protocol consumed by Gateway runtime (see ax_cli/gateway.py):
- `AX_GATEWAY_EVENT {"kind":"status","status":"...","message":"..."}`
- `AX_GATEWAY_EVENT {"kind":"tool_start","tool_name":"...","tool_call_id":"...","status":"tool_call",...}`
- `AX_GATEWAY_EVENT {"kind":"tool_result","tool_name":"...","tool_call_id":"...","status":"tool_complete",...}`
Unprefixed stdout continues to accumulate into the final reply body.
Validated on dev.paxai.app: dev_sentinel registered with this bridge,
phase sequence reaches the pending bubble via agent_processing SSE.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…minal chatter doesn't leak into reply
Hermes's AIAgent prints progress animations ("deliberating...", tool
previews, "💻 $ pwd", "ಠ_ಠ computing...", etc.) to stdout even with
quiet_mode=True. Gateway captures unprefixed stdout as the reply body,
so the bubble was receiving Hermes's terminal chatter instead of the
actual final_response — e.g. "[tool] ٩(๑❛ᴗ❛๑)۶ deliberating... ┊ 💻 $
pwd 7.4s" as the user-visible reply.
Fix: capture _real_stdout before the run, redirect sys.stdout/sys.stderr
to /dev/null during run_conversation, emit AX_GATEWAY_EVENT lines and
the final reply via a dedicated writer bound to _real_stdout. Clean
separation: hermes's internal prints get swallowed, our phase events
and the real reply reach Gateway exactly once.
Validated on dev.paxai.app (dev_sentinel msg bf2c87b6):
reply_sent | pong cwd: `/home/ax-agent/agents/dev_sentinel`
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Instead of chip reading a generic "@x is using terminal...", surface the specific command/file so the user sees what the agent is actually doing: terminal + {command:"pwd"} → "$ pwd" read_file + {path:"AGENTS.md"} → "reading AGENTS.md" write_file + {path:"notes.md"} → "writing notes.md" edit_file → "editing <path>" search/grep → "searching <pattern>" web_search → "web search: <query>" fetch → "fetching <url>" unknown tool → first scalar arg or "using <tool>" Truncated to 80 chars at the emitter so the chip stays short. Validated on dev.paxai.app (msg 71d14a1b multi-tool run): activity="reading /home/ax-agent/agents/dev_sentinel/AGENTS.md" activity="$ pwd" Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Supersedes #84.
Verification