HarborForge.PlexumPlugin

Plexum-side equivalent of HarborForge.OpenclawPlugin: exposes Plexum-side telemetry to the HarborForge Monitor bridge, drives the HarborForge Calendar scheduler, and gives agents a tool surface for the same calendar lifecycle actions OpenClaw agents had.

Part of the HarborForge platform; tracked as a git submodule of the HarborForge umbrella repo.

• Plugin id: harbor-forge (matches the OpenClaw counterpart so the backend's per-plugin schemas don't fork)
• Plugin version: 0.1.0
• Activation: eager — Monitor bridge + Calendar scheduler must be running before any agent turn fires
• Plexum SDK version: requires Plexum-sdk-go with HostAPI.WakeAgent (commit 216cf21 or later)

What it does

• Monitor bridge — HTTP server on 127.0.0.1:<monitor_port> that responds to /telemetry with a Snapshot the HarborForge.Monitor binary expects (system metrics + every Plexum agent's sm-state)
• Calendar scheduler — heartbeats <backendUrl>/calendar/agent/ heartbeat every interval, receives any TimeSlots due to fire, and dispatches them through HostAPI.WakeAgent (state-aware queue with depth-1 replace-newest)
• 9 harborforge_ tools* mirroring the OpenClaw plugin's surface

Tool	Use
harborforge_status	resolved config + Monitor bridge health + Calendar status + telemetry snapshot
harborforge_telemetry	fresh system + agent metrics
harborforge_monitor_telemetry	last bridge query timing + last snapshot served
harborforge_calendar_status	active slot(s) + history + heartbeat clock
harborforge_calendar_complete	mark active slot completed (+optional summary)
harborforge_calendar_abort	mark active slot aborted (+optional reason)
harborforge_calendar_pause	pause active slot (non-terminal)
harborforge_calendar_resume	resume a paused slot
harborforge_restart_status	backend restart-pending flag + last poll time

Install

git clone --recurse-submodules https://git.hangman-lab.top/zhi/HarborForge.PlexumPlugin
cd HarborForge.PlexumPlugin
bash scripts/install.sh   # or:  make install

Then in ~/.plexum/plexum.json:

{
  "plugins": {
    "allow": [
      ".",
      "harbor-forge"
    ]
  }
}

And configure at ~/.plexum/plugins/harbor-forge/config.json:

{
  "backendUrl": "https://monitor.hangman-lab.top",
  "identifier": "server-t3",
  "apiKey": "g1_xxx",
  "monitor_port": 9100,
  "calendar_enabled": true,
  "calendar_heartbeat_interval_seconds": 30
}

Restart the host (systemctl --user restart plexum) and verify:

plexum plugin-list | grep harbor
curl -s http://127.0.0.1:9100/health
curl -s http://127.0.0.1:9100/telemetry | jq .agents

How calendar wake works

When the backend returns a slot_to_fire in a heartbeat response:

1. Scheduler builds the message from slot.wake_options.override_message or falls back to slot.prompt
2. host.WakeAgent({agent_id, message, source: "calendar:slot-<id>"})
3. Plexum host-side wake.Manager:
   • if agent's sm-state is idle → runs the turn synchronously in a goroutine against the agent's wake session
   • else → enqueues (depth 1; new wake replaces any pending one)
   • drains automatically when the running turn returns
4. The source tag lands on the turn's faithful event so retros can tell which slot caused which turn

The agent uses harborforge_calendar_complete / _abort / _pause / _resume mid-turn to push status back to the backend.

Layout

HarborForge.PlexumPlugin/
├── manifest.json                    # plugin manifest (eager, 9 tools)
├── go.mod                           # → Plexum-sdk-go (replace ../)
├── cmd/plexum-harborforge-plugin/   # main entry (Serve + Init)
├── internal/config/                 # config.json schema + Resolve
├── internal/telemetry/              # /proc-based snapshot collector
├── internal/monitor/                # HTTP bridge for HF.Monitor
├── internal/calendar/               # types + backend client + scheduler
├── internal/tools/                  # 9 tool implementations
└── scripts/install.sh               # build + drop into ~/.plexum/plugins

Differences vs OpenClaw equivalent

OpenClaw plugin	Plexum plugin
api.registerTool(factory) runtime	ToolPlugin.CallTool + manifest contract
api.spawn({agentId, task})	HostAPI.WakeAgent({agent_id, message, source}) (state-aware queue)
api.getAgentStatus()	HostAPI.ReadAgentState(ctx, agent_id)
--install-monitor / --install-cli flags	n/a — Monitor + hf CLI deploy separately (e.g. via HangmanLab.Server.T3 docker compose)
TS source compiled by tsc	static Go binary built per-platform