mac 2026-08-29 21:34:52 → now 1 session(s)
Session Started Where Title
baHP3e 2026-08-30 20:57 Code/dashboard Systemd inhibit sleep plugin
⚑ ❬baHP3e❭ Systemd inhibit sleep plugin ~/Code/dashboard
────────────────────────────────────────────────────────────────────────────────────────────────────
│ 2026-08-30 20:57:50 • user
│
│ We're implementing a new plugin. It should show if the PC may be able to go to sleep right now
│ by running `systemd-inhibit --json=short --mode=block --list` and show the current inhibitors.
│ KDE's powerdevil does not inhibit sleep or shutdown, it just blocks the system from doing that
│ because it does not know when user input happens on the desktop.
│
│ In addition to showing inhibition state it should be possible to disable sleeping by flipping a
│ switch so the dashboard itself inhibits sleep.
│ 2026-08-30 20:57:50 • assistant • Qwen3.8-27B-Think @plan
│
│ I'm in plan mode, so I'll be working read-only while exploring the codebase to understand the
│ plugin system and build a plan for a new sleep inhibitor plugin.
│
│ read /home/mac/Code/dashboard/app/plugins ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/app/plugins"
│ }
│ out
│ /home/mac/Code/dashboard/app/plugins
│ directory
│
│ __init__.py
│ __pycache__/
│ base.py
│ llamacpp.py
│
│ (4 entries)
│
│ glob app/plugins/**/*.py ok 0.0s
│ in
│ {
│ "pattern": "app/plugins/**/*.py"
│ }
│ out
│ /home/mac/Code/dashboard/app/plugins/llamacpp.py
│ /home/mac/Code/dashboard/app/plugins/base.py
│ /home/mac/Code/dashboard/app/plugins/__init__.py
│
│ tokens 559 in 97 out 8747 cached 0 written $0.0000 tool-calls
│ 2026-08-30 20:57:58 • assistant • Qwen3.8-27B-Think @plan
│
│ I'll read through the plugin files and get a grasp of the plugin architecture.
│
│ read /home/mac/Code/dashboard/app/plugins/base.py ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/app/plugins/base.py"
│ }
│ out
│ /home/mac/Code/dashboard/app/plugins/base.py
│ file
│
│ 1: from collections.abc import Awaitable, Callable
│ 2: from dataclasses import dataclass, field
│ 3:
│ 4:
│ 5: @dataclass
│ 6: class Plugin:
│ 7: id: str
│ 8: title: str
│ 9: description: str = ""
│ 10: skeleton_fn: Callable[[], Awaitable[str]] | None = field(default=None)
│ 11:
│ 12: async def skeleton(self) -> str:
│ 13: if self.skeleton_fn is None:
│ 14: raise NotImplementedError
│ 15: return await self.skeleton_fn()
│
│ (End of file - total 15 lines)
│
│ read /home/mac/Code/dashboard/app/plugins/__init__.py ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/app/plugins/__init__.py"
│ }
│ out
│ /home/mac/Code/dashboard/app/plugins/__init__.py
│ file
│
│ 1: from app.plugins.base import Plugin
│ 2: from app.plugins.llamacpp import plugin as llamacpp_plugin, router as llamacpp_router
│ 3:
│ 4: PLUGINS: list[Plugin] = [llamacpp_plugin]
│ 5: ROUTERS = [llamacpp_router]
│ 6:
│ 7: __all__ = ["PLUGINS", "ROUTERS", "Plugin"]
│
│ (End of file - total 7 lines)
│
│ read /home/mac/Code/dashboard/app/plugins/llamacpp.py ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/app/plugins/llamacpp.py"
│ }
│ out
│ /home/mac/Code/dashboard/app/plugins/llamacpp.py
│ file
│
│ 1: from typing import Any
│ 2:
│ 3: import httpx
│ 4: from fastapi import APIRouter, Form
│ 5: from fastapi.responses import HTMLResponse
│ 6:
│ 7: from app.config import Settings, get_settings
│ 8: from app.plugins.base import Plugin
│ 9: from app.render import render
│ 10:
│ 11: router = APIRouter(prefix="/api/plugins/llamacpp", tags=["plugins"])
│ 12:
│ 13:
│ 14: def _headers(settings: Settings) -> dict[str, str]:
│ 15: h = {}
│ 16: if settings.llama_api_key:
│ 17: h["Authorization"] = f"Bearer {settings.llama_api_key}"
│ 18: return h
│ 19:
│ 20:
│ 21: def _client() -> httpx.AsyncClient:
│ 22: settings = get_settings()
│ 23: return httpx.AsyncClient(
│ 24: base_url=settings.llama_base_url.rstrip("/"),
│ 25: timeout=settings.llama_timeout,
│ 26: headers=_headers(settings),
│ 27: )
│ 28:
│ 29:
│ 30: async def gather_status() -> dict[str, Any]:
│ 31: """Query the llama-server router. Never raises; returns status dict."""
│ 32: settings = get_settings()
│ 33: status: dict[str, Any] = {
│ 34: "base_url": settings.llama_base_url,
│ 35: "reachable": False,
│ 36: "health": None,
│ 37: "models": [],
│ 38: "error": None,
│ 39: }
│ 40: try:
│ 41: async with _client() as client:
│ 42: try:
│ 43: r = await client.get("/health")
│ 44: status["health"] = r.json().get("status") if r.status_code == 200 else
│ f"http {r.status_code}"
│ 45: except httpx.HTTPError:
│ 46: pass
│ 47: r = await client.get("/models")
│ 48: _ = r.raise_for_status()
│ 49: status["reachable"] = True
│ 50: data = r.json()
│ 51: for m in data.get("data", []):
│ 52: st: dict[str, Any] = m.get("status") or {}
│ 53: item: dict[str, str | bool | float] = {
│ 54: "id": str(m.get("id", "?")),
│ 55: "sta
│ … [4249 more chars]
│
│ tokens 106 in 123 out 9402 cached 0 written $0.0000 tool-calls
│ 2026-08-30 20:58:01 • assistant • Qwen3.8-27B-Think @plan
│
│ Next, let's look at the plugins router, the template, and the render module to understand how
│ plugins get displayed.
│
│ glob app/routers/*.py ok 0.0s
│ in
│ {
│ "pattern": "app/routers/*.py"
│ }
│ out
│ /home/mac/Code/dashboard/app/routers/disks.py
│ /home/mac/Code/dashboard/app/routers/processes.py
│ /home/mac/Code/dashboard/app/routers/services.py
│ /home/mac/Code/dashboard/app/routers/journal.py
│ /home/mac/Code/dashboard/app/routers/plugins.py
│ /home/mac/Code/dashboard/app/routers/overview.py
│ /home/mac/Code/dashboard/app/routers/__init__.py
│ glob templates/plugins/*.html ok 0.0s
│ in
│ {
│ "pattern": "templates/plugins/*.html"
│ }
│ out
│ /home/mac/Code/dashboard/templates/plugins/llamacpp_state.html
│ /home/mac/Code/dashboard/templates/plugins/llamacpp_skeleton.html
│ read /home/mac/Code/dashboard/app/render.py ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/app/render.py"
│ }
│ out
│ /home/mac/Code/dashboard/app/render.py
│ file
│
│ 1: from datetime import timedelta
│ 2: from pathlib import Path
│ 3: from typing import Any
│ 4:
│ 5: from jinja2 import Environment, FileSystemLoader, select_autoescape
│ 6:
│ 7: BASE = Path(__file__).resolve().parent.parent
│ 8:
│ 9:
│ 10: def humanize(value: float | str | None) -> str:
│ 11: if value is None:
│ 12: return "—"
│ 13: n = float(value)
│ 14: for unit in ("B", "KiB", "MiB", "GiB", "TiB"):
│ 15: if abs(n) < 1024 or unit == "TiB":
│ 16: if unit == "B":
│ 17: return f"{int(n)} B"
│ 18: return f"{n:.1f} {unit}"
│ 19: n /= 1024
│ 20: return f"{n:.1f} TiB"
│ 21:
│ 22:
│ 23: def rate(value: float | str | None) -> str:
│ 24: if value is None:
│ 25: return "—"
│ 26: n = float(value)
│ 27: for unit in ("B/s", "KiB/s", "MiB/s", "GiB/s"):
│ 28: if abs(n) < 1024 or unit == "GiB/s":
│ 29: if unit == "B/s":
│ 30: return f"{int(n)} B/s"
│ 31: return f"{n:.1f} {unit}"
│ 32: n /= 1024
│ 33: return f"{n:.1f} GiB/s"
│ 34:
│ 35:
│ 36: def uptime_str(seconds: float | None) -> str:
│ 37: if seconds is None:
│ 38: return "—"
│ 39: td = timedelta(seconds=int(seconds))
│ 40: days, rem = divmod(td.seconds, 86400)
│ 41: hours, rem = divmod(rem, 3600)
│ 42: minutes = rem // 60
│ 43: parts: list[str] = []
│ 44: if days:
│ 45: parts.append(f"{days}d")
│ 46: if days or hours:
│ 47: parts.append(f"{hours}h")
│ 48: parts.append(f"{minutes}m")
│ 49: return " ".join(parts)
│ 50:
│ 51:
│ 52: def pct(value: float | None) -> str:
│ 53: if value is None:
│ 54: return "—"
│ 55: return f"{value:.0f}%"
│ 56:
│ 57:
│ 58: env = Environment(
│ 59: loader=FileSystemLoader(BASE / "templates"),
│ 60: autoescape=select_autoescape(("html", "j2")),
│ 61: )
│ 62: env.filters["humanize"] = humanize
│ 63: env.filters["rate"] = rate
│ 64: env.filters["uptime"] = uptime_str
│ 65: env.filters["pct"]
│ … [162 more chars]
│
│ tokens 2373 in 118 out 9631 cached 0 written $0.0000 tool-calls
│ 2026-08-30 20:58:06 • assistant • Qwen3.8-27B-Think @plan
│
│ Let's check the plugins router, the llamacpp template, and how the plugins are integrated into
│ the main page.
│
│ read /home/mac/Code/dashboard/app/routers/plugins.py ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/app/routers/plugins.py"
│ }
│ out
│ /home/mac/Code/dashboard/app/routers/plugins.py
│ file
│
│ 1: from fastapi import APIRouter
│ 2: from fastapi.responses import HTMLResponse
│ 3:
│ 4: from app.plugins import PLUGINS, Plugin
│ 5: from app.render import render
│ 6:
│ 7: router = APIRouter(prefix="/api/plugins", tags=["plugins"])
│ 8:
│ 9:
│ 10: @router.get("")
│ 11: async def plugins_index():
│ 12: items: list[dict[str, Plugin | str]] = []
│ 13: for p in PLUGINS:
│ 14: try:
│ 15: body = await p.skeleton()
│ 16: except Exception as e: # noqa
│ 17: body = f"
plugin error: {e}
"
│ 18: items.append({"p": p, "body": body})
│ 19: return HTMLResponse(render("plugins.html", items=items))
│
│ (End of file - total 19 lines)
│
│ read /home/mac/Code/dashboard/templates/plugins/llamacpp_skeleton.html ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/templates/plugins/llamacpp_skeleton.html"
│ }
│ out
│ /home/mac/Code/dashboard/templates/plugins/llamacpp_skeleton.html
│ file
│
│ 1:
│ 2:
│ 3: {% include "plugins/llamacpp_state.html" %}
│ 4:
│ 5: {% if reachable %}
│ 6:
Available models
│ 7: {% if available %}
│ 8:
│ 9:
│ 14:
│ 15:
│ 16: {% else %}
│ 17:
no unloaded models (is --models-dir set on the server?)
│ 18: {% endif %}
│ 19:
│ 20:
│ 21:
│ 22:
│ 23: {% endif %}
│ 24:
│
│ (End of file - total 24 lines)
│
│ read /home/mac/Code/dashboard/templates/plugins/llamacpp_state.html ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/templates/plugins/llamacpp_state.html"
│ }
│ out
│ /home/mac/Code/dashboard/templates/plugins/llamacpp_state.html
│ file
│
│ 1: {% if not reachable %}
│ 2:
llama-server unreachable at {{ base_url }}{%
│ if error %}: {{ error }}{% endif %}
│ 3:
start it in router mode: llama-server
│ --models-dir /path/to/models
│ 4: {% else %}
│ 5:
│ 6:
│ 7: {{ "healthy" if health == "ok" else (health or "status
│ unknown") }}
│ 8: {{ base_url }}
│ 9:
│ 10: {% if message %}
{{ message }}
{% endif %}
│ 11: {% if error_msg %}
{{ error_msg }}
{% endif %}
│ 12:
│ 13:
Loaded models
│ 14: {% if loaded %}
│ 15:
│ 16: {% for m in loaded %}
│ 17:
│ 18:
│ 19: {{ m.id }}
│ 20: {{ m.state }}{% if
│ m.failed %} (exit {{ m.exit_code }}){% endif %}
│ 21: {% if m.progress is not none %}
{% endif %}
│ 22:
│ 23:
│ 24:
│ 25:
│ 26: {% endfor %}
│ 27:
│ 28: {% else %}
│ 29:
no models loaded
│ 30: {% endif %}
│ 31: {% endif %}
│
│ (End of file - total 31 lines)
│
│
│ tokens 959 in 136 out 12122 cached 0 written $0.0000 tool-calls
│ 2026-08-30 20:58:10 • assistant • Qwen3.8-27B-Think @plan
│
│ Next, let's look at the plugins.html template, the main template, and how systemd actions (like
│ enable/disable) are handled in the services router. That's because the plugin's toggle switch is
│ going to need a POST endpoint. Also, let's check how the service is executing systemd actions
│ (probably via `asyncio.create_subprocess_exec`). And let's check app/state.py and config for TTL
│ caching patterns.
│
│ read /home/mac/Code/dashboard/templates/plugins.html ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/templates/plugins.html"
│ }
│ out
│ /home/mac/Code/dashboard/templates/plugins.html
│ file
│
│ 1:
│ 2:
plugins load from app/plugins/
│ — each module exposes a Plugin instance
│ 3: {% for item in items %}
│ 4:
│ 5:
{{ item.p.title }}
│ 6:
{{ item.p.description }}
│ 7:
{{ item.body | safe }}
│ 8:
│ 9: {% else %}
│ 10:
no plugins registered
│ 11: {% endfor %}
│ 12:
│
│ (End of file - total 12 lines)
│
│ read /home/mac/Code/dashboard/app/routers/services.py ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/app/routers/services.py"
│ }
│ out
│ /home/mac/Code/dashboard/app/routers/services.py
│ file
│
│ 1: from typing import Any
│ 2:
│ 3: from fastapi import APIRouter, Form
│ 4: from fastapi.responses import HTMLResponse
│ 5:
│ 6: from app import journal
│ 7: from app.render import render
│ 8: from app.systemd import units
│ 9:
│ 10: router = APIRouter(prefix="/api/services", tags=["services"])
│ 11:
│ 12: SORT_KEYS = ("name", "state", "enabled")
│ 13: _STATE_RANK = {
│ 14: "active": 0,
│ 15: "activating": 1,
│ 16: "deactivating": 1,
│ 17: "reloading": 1,
│ 18: "reactivating": 1,
│ 19: "failed": 2,
│ 20: "inactive": 3,
│ 21: "dead": 3,
│ 22: "maintenance": 3,
│ 23: }
│ 24: _ENABLED_RANK = {
│ 25: "enabled": 0,
│ 26: "indirect": 1,
│ 27: "static": 2,
│ 28: "disabled": 3,
│ 29: "alias": 4,
│ 30: "linked": 4,
│ 31: "linked-runtime": 4,
│ 32: "masked": 5,
│ 33: "": 6,
│ 34: }
│ 35:
│ 36:
│ 37: def _rank(u: dict[str, Any], key: str) -> int:
│ 38: if key == "state":
│ 39: return _STATE_RANK.get(u["active"], 9)
│ 40: if key == "enabled":
│ 41: return _ENABLED_RANK.get(u["enabled"], 9)
│ 42: return 0
│ 43:
│ 44:
│ 45: async def _list_fragment(q: str, sort: str = "name", order: str = "asc", error: str |
│ None = None) -> str:
│ 46: if sort not in SORT_KEYS:
│ 47: sort = "name"
│ 48: if order not in ("asc", "desc"):
│ 49: order = "asc"
│ 50: unit_list = await units.unit_list()
│ 51: if q:
│ 52: ql = q.lower()
│ 53: unit_list = [
│ 54: u for u in unit_list if ql in u["name"].lower() or ql in u["desc"].lower()
│ 55: ]
│ 56: reverse = order == "desc"
│ 57: if sort == "name":
│ 58: unit_list.sort(key=lambda u: u["name"], reverse=reverse)
│ 59: else:
│ 60: unit_list.sort(key=lambda u: (_rank(u, sort), u["name"]), reverse=reverse)
│ 61: state = await units.system_state()
│ 62: return render(
│ 63: "services.html",
│ 64: units=unit_list,
│ 65: state=state,
│ 66: q=q,
│ 67: sort
│ … [1422 more chars]
│
│ tokens 1369 in 153 out 13217 cached 0 written $0.0000 tool-calls
│ 2026-08-30 20:58:16 • assistant • Qwen3.8-27B-Think @plan
│
│ Let's check how systemd units are being executed (subprocess patterns), and also check the
│ state/config for TTL caching patterns. I'll also check main.py to see how the router is
│ registered.
│
│ read /home/mac/Code/dashboard/app/systemd/units.py ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/app/systemd/units.py"
│ }
│ out
│ /home/mac/Code/dashboard/app/systemd/units.py
│ file
│
│ 1: import asyncio
│ 2: import re
│ 3: import time
│ 4:
│ 5: UNIT_RE = re.compile(r"^[A-Za-z0-9@:_.\-+]+\.(service|socket|timer|target|path|slice)$")
│ 6: ACTIONS = ("start", "stop", "restart", "enable", "disable")
│ 7:
│ 8: _enabled_cache: dict[str, str] | None = None
│ 9: _enabled_cache_at = 0.0
│ 10: _ENABLED_TTL = 30.0
│ 11:
│ 12: _DETAIL_PROPS = (
│ 13: "ActiveState,SubState,LoadState,UnitFileState,Description,MainPID,"
│ 14: "ExecMainStartTimestamp,NRestarts,FragmentPath,Result"
│ 15: )
│ 16:
│ 17:
│ 18: async def _run(cmd: list[str]) -> tuple[int, str, str]:
│ 19: proc = await asyncio.create_subprocess_exec(
│ 20: *cmd,
│ 21: stdout=asyncio.subprocess.PIPE,
│ 22: stderr=asyncio.subprocess.PIPE,
│ 23: )
│ 24: out, err = await proc.communicate()
│ 25: return proc.returncode or 0, out.decode(errors="replace"),
│ err.decode(errors="replace")
│ 26:
│ 27:
│ 28: async def _systemctl(*args: str, privileged: bool = False) -> str:
│ 29: # Privileged verbs always go through sudo: plain attempts just get
│ 30: # rejected by systemd and spam the journal with auth failures.
│ 31: cmd = (["sudo", "systemctl", *args] if privileged else ["systemctl", *args])
│ 32: rc, out, err = await _run(cmd)
│ 33: if rc == 0:
│ 34: return out
│ 35: raise RuntimeError(err.strip() or f"systemctl {' '.join(args)} failed")
│ 36:
│ 37:
│ 38: async def _enabled_map(force: bool = False) -> dict[str, str]:
│ 39: global _enabled_cache, _enabled_cache_at
│ 40: now = time.monotonic()
│ 41: if not force and _enabled_cache is not None and now - _enabled_cache_at <
│ _ENABLED_TTL:
│ 42: return _enabled_cache
│ 43: files = await _systemctl("list-unit-files", "--type=service", "--no-legend",
│ "--plain")
│ 44: m: dict[str, str] = {}
│ 45: for line in files.splitlines():
│ 46: parts = line.split(None, 2)
│ 47: if len(parts) < 2:
│ 48: continue
│ 49: m[parts[0]] = part
│ … [2426 more chars]
│ read /home/mac/Code/dashboard/main.py ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/main.py"
│ }
│ out
│ /home/mac/Code/dashboard/main.py
│ file
│
│ 1: import uvicorn
│ 2:
│ 3: from app.config import get_settings
│ 4:
│ 5: if __name__ == "__main__":
│ 6: s = get_settings()
│ 7: uvicorn.run("app.main:app", host=s.host, port=s.port, log_level="warning")
│
│ (End of file - total 7 lines)
│
│
│ tokens 1514 in 108 out 14739 cached 0 written $0.0000 tool-calls
│ 2026-08-30 20:58:21 • assistant • Qwen3.8-27B-Think @plan
│
│ Next, let's check app/main.py to see how the router is registered, and also check config.py.
│
│ read /home/mac/Code/dashboard/app/main.py ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/app/main.py"
│ }
│ out
│ /home/mac/Code/dashboard/app/main.py
│ file
│
│ 1: import asyncio
│ 2: import socket
│ 3: from contextlib import asynccontextmanager
│ 4:
│ 5: from fastapi import FastAPI
│ 6: from fastapi.responses import HTMLResponse
│ 7: from fastapi.staticfiles import StaticFiles
│ 8:
│ 9: from app.config import get_settings
│ 10: from app.plugins import ROUTERS as PLUGIN_ROUTERS
│ 11: from app.render import BASE, render
│ 12: from app.routers import disks, overview, plugins, processes, services
│ 13: from app.routers import journal as journal_router
│ 14: from app.sampling import sampler_loop
│ 15: from app.state import HistoryStore
│ 16:
│ 17:
│ 18: @asynccontextmanager
│ 19: async def lifespan(app: FastAPI):
│ 20: settings = get_settings()
│ 21: app.state.settings = settings
│ 22: app.state.store = HistoryStore(maxlen=settings.history_maxlen)
│ 23: task = asyncio.create_task(sampler_loop(app.state.store, settings.sample_interval))
│ 24: yield
│ 25: _ = task.cancel()
│ 26: try:
│ 27: await task
│ 28: except asyncio.CancelledError:
│ 29: pass
│ 30:
│ 31:
│ 32: def create_app() -> FastAPI:
│ 33: app = FastAPI(title="Dashboard", lifespan=lifespan)
│ 34: app.mount("/static", StaticFiles(directory=BASE / "static"), name="static")
│ 35: for r in (overview.router, disks.router, processes.router, journal_router.router,
│ services.router, plugins.router):
│ 36: app.include_router(r)
│ 37: for r in PLUGIN_ROUTERS:
│ 38: app.include_router(r)
│ 39:
│ 40: @app.get("/", include_in_schema=False)
│ 41: async def index():
│ 42: return HTMLResponse(render("index.html", hostname=socket.gethostname()))
│ 43:
│ 44: return app
│ 45:
│ 46:
│ 47: app = create_app()
│
│ (End of file - total 47 lines)
│
│ read /home/mac/Code/dashboard/app/config.py ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/app/config.py"
│ }
│ out
│ /home/mac/Code/dashboard/app/config.py
│ file
│
│ 1: from functools import lru_cache
│ 2:
│ 3: from pydantic_settings import BaseSettings, SettingsConfigDict
│ 4:
│ 5:
│ 6: class Settings(BaseSettings):
│ 7: model_config = SettingsConfigDict(env_prefix="DASH_", env_file=".env",
│ extra="ignore")
│ 8:
│ 9: host: str = "127.0.0.1"
│ 10: port: int = 8501
│ 11: sample_interval: float = 2.0
│ 12: retention_minutes: int = 60
│ 13: chart_max_points: int = 200
│ 14:
│ 15: llama_base_url: str = "http://127.0.0.1:8080"
│ 16: llama_api_key: str = ""
│ 17: llama_timeout: float = 4.0
│ 18:
│ 19: @property
│ 20: def history_maxlen(self) -> int:
│ 21: return max(10, int(self.retention_minutes * 60 / self.sample_interval))
│ 22:
│ 23:
│ 24: @lru_cache
│ 25: def get_settings() -> Settings:
│ 26: return Settings()
│
│ (End of file - total 26 lines)
│
│
│ tokens 1618 in 89 out 16362 cached 0 written $0.0000 tool-calls
│ 2026-08-30 20:58:25 • assistant • Qwen3.8-27B-Think @plan
│
│ Now I have a good understanding of the plugin architecture. Let me check the output format of
│ `systemd-inhibit --json=short --list` and think about how to implement sleep inhibition from a
│ persistent process.
│
│ Key design considerations:
│
│ 1. **Displaying inhibitors**: Run `systemd-inhibit --json=short --list` (actually `--list` alone
│ displays the list, and `--json=short` is for the inhibit command... let me think about it.
│ Actually, `systemd-inhibit --list` lists active inhibitors. Let me verify: `systemd-inhibit`
│ usage:
│ - `systemd-inhibit COMMAND...` — runs a command with an inhibitor lock
│ - `systemd-inhibit --list` — lists active inhibitor locks
│ - `--json=pretty|short|offline` — output as JSON
│
│ So `systemd-inhibit --json=short --list` should work. Each entry in the JSON array has fields
│ like:
│ ```json
│ {
│ "who": "user name",
│ "what": "sleep",
│ "why": "reason",
│ "mode": "block"
│ }
│ ```
│ Actually, the JSON fields for inhibitors listed via systemd-inhibit --json=short --list are:
│ `who`, `what`, `why`, `mode`. Let me recall from the systemd docs (INHIBITOR LOCKS):
│ `systemd-inhibit --list` shows WHO, WHAT, WHY, MODE. JSON output has those keys.
│
│ 2. **Creating a persistent inhibitor**: `systemd-inhibit` in COMMAND mode spawns the command and
│ holds the lock while it runs. To keep the lock for the lifetime of the dashboard process, the
│ natural approach is:
│ - Option A: `asyncio.create_subprocess_exec("systemd-inhibit", "--what=sleep",
│ "--who=Dashboard", "--why=...", "--mode=block", "sleep", "infinity")` — hmm, that's hacky but
│ works: run `systemd-inhibit ... -- shell -c 'sleep infinity'` or `sleep 2147483647`.
│ - Option B: Use `systemd-inhibit` in "list" mode... no, that's not it.
│ - Option C: Use `loginctl inhibit` — deprecated.
│ - Option D: Use `busctl`/D-Bus: `org.freedesktop.login1.Manager.Inhibit` — the proper API,
│ holding an fd. Requires a D-Bus session/system bus client. Python stdlib has no D-Bus; could
│ shell out to
│ … [15945 more chars]
│
│ bash systemd-inhibit --json=short --list; echo "rc=$?" ok 0.0s
│ in
│ {
│ "command": "systemd-inhibit --json=short --list; echo \"rc=$?\""
│ }
│ out
│ [{"who":"NetworkManager","uid":0,"user":"root","pid":689,"comm":"NetworkManager","what":"sle
│ ep","why":"NetworkManager needs to turn off networks","mode":"delay"},{"who":"Realtime
│ Kit","uid":0,"user":"root","pid":1254,"comm":"rtkit-daemon","what":"sleep","why":"Demote
│ realtime scheduling and stop
│ canary.","mode":"delay"},{"who":"UPower","uid":0,"user":"root","pid":1072,"comm":"upowerd","
│ what":"sleep","why":"Pause device
│ polling","mode":"delay"},{"who":"PowerDevil","uid":1001,"user":"mac","pid":1392,"comm":"org_
│ kde_powerde","what":"handle-power-key:handle-suspend-key:handle-hibernate-key:handle-lid-swi
│ tch","why":"KDE handles power
│ events","mode":"block"},{"who":"compositor","uid":1001,"user":"mac","pid":1208,"comm":"kwin_
│ wayland","what":"sleep","why":"Ensuring that the screen gets locked before going to
│ sleep","mode":"delay"}]
│ rc=0
│ bash timeout 1 sleep infinity; echo "rc=$?"; systemd-inhibit --help 2>&1 | grep -… ok 0.0s
│ in
│ {
│ "command": "timeout 1 sleep infinity; echo \"rc=$?\"; systemd-inhibit --help 2>&1 | grep
│ -E \"json|mode|what|who|why|list\" "
│ }
│ out
│ rc=124
│ --json=FORMAT Generate JSON output (pretty, short, or off)
│ --what=WHAT Operations to inhibit, colon separated list (shutdown,
│ --who=STRING A descriptive string who is inhibiting
│ --why=STRING A descriptive string why is being inhibited
│ --mode=MODE One of block, block-weak, or delay
│ --list List active inhibitors
│ read /home/mac/Code/dashboard/pyproject.toml ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/pyproject.toml"
│ }
│ out
│ /home/mac/Code/dashboard/pyproject.toml
│ file
│
│ 1: [project]
│ 2: name = "dashboard"
│ 3: version = "0.1.0"
│ 4: description = "Computer dashboard and combined task manager (FastAPI + htmx)"
│ 5: license = "Unlicense"
│ 6: license-files = ["LICENSE"]
│ 7: requires-python = ">=3.12"
│ 8: dependencies = [
│ 9: "fastapi>=0.141.1",
│ 10: "httpx>=0.28.1",
│ 11: "jinja2>=3.1.6",
│ 12: "psutil>=7.2.2",
│ 13: "pydantic-settings>=2.15.0",
│ 14: "python-multipart>=0.0.32",
│ 15: "uvicorn[standard]>=0.52.4",
│ 16: ]
│ 17:
│ 18: [tool.uv]
│ 19: package = false
│ 20:
│ 21: [tool.basedpyright]
│ 22: reportExplicitAny = false
│ 23: reportAny = false
│
│ (End of file - total 23 lines)
│
│
│ tokens 862 in 4612 out 18068 cached 0 written $0.0000 tool-calls
│ 2026-08-30 21:00:30 • assistant • Qwen3.8-27B-Think @plan
│
│ The JSON output has rich fields: `who`, `uid`, `user`, `pid`, `comm`, `what`, `why`, `mode`. And
│ since `what` can be a colon-separated list like `handle-power-key:handle-suspend-key:...`, we
│ need to split on `:` when checking. Also, the `mode` here can be `block`, `delay`, or
│ `block-weak` (the newer systemd also has `block-weak` — treat it as block-equivalent? block-weak
│ is for things like… it's a mode where the inhibitor is ignored if it's the only one? Let me
│ recall: `block-weak` — "the inhibitor is only effective if there are other active inhibitors
│ too"? Actually, according to the man page: block-weak: "the lock is only applied if there are
│ other locks of the same type"? I'll treat block-weak as block for our determination (or display
│ it as-is and only count `block`… hmm). Let's not overthink it; display the mode as-is, and treat
│ `block` and `block-weak` as blocking.
│
│ Also, `sleep infinity` works (rc=124 = force-killed by timeout, as expected).
│
│ Another interesting point: the `pid` and `comm` fields in the list output — very useful for
│ display (and for reaping old locks from our marker: we can filter the list by who, get the pid,
│ and kill that pid!). This makes startup cleanup easy: parse the list, find entries where who ==
│ our marker, and kill(pid). No pgrep needed.
│
│ Now, let's check the CSS classes available in the templates and match the UI style. I'll look at
│ main.css and index.html.
│
│ read /home/mac/Code/dashboard/templates/index.html ok 0.0s
│ in
│ {
│ "filePath": "/home/mac/Code/dashboard/templates/index.html"
│ }
│ out
│ /home/mac/Code/dashboard/templates/index.html
│ file
│
│ 1:
│ 2:
│ 3:
│ 4:
│ 5:
│ 6: {{ hostname }}
│ 7:
│ 8:
│ 9:
│ 10:
│ 11:
│ 12:
│ 13: