feat(commands): add media controls + system info packs

media/ — play_pause, next, prev, stop via user32!keybd_event (VK_MEDIA_*
0xB0..0xB3). Helper _media_helper.ps1 mirrors the volume/ pack pattern,
so the same C# P/Invoke style works for the four standard media keys
without needing any external tooling. Catches Spotify, foobar, browsers,
Yandex Music PWA — anything that responds to system media keys.

sysinfo/ — battery / time / cpu / ram / disk and an "all" combo.
_sysinfo.ps1 uses CIM queries (Win32_Battery, Win32_OperatingSystem,
Win32_LogicalDisk, Win32_Processor + Win32_PerfFormattedData_PerfOS_
Processor) — no external deps. Time is rendered in ru-RU culture
("01:17, 15 мая, пятница"). Battery falls back to a friendly "no
battery, looks like a desktop" when Win32_Battery is empty. SystemDrive
env var resolves the right disk on non-C:/ installs.

Each sysinfo command notifies the line as a Windows toast and logs it.

Triggered locally: sysinfo_all currently reports:
  Сейчас: 01:17, 15 мая, пятница
  Батарея не обнаружена (видимо, десктоп)
  CPU: AMD Ryzen 7 5700X3D 8-Core Processor, загрузка 4%
  RAM: 23.4 из 47.9 ГБ (49% занято)
  Диск C:: свободно 118.2 из 1906.8 ГБ

Total command packs is now 9 (verified via jarvis-gui startup log).

Portability: all PowerShell helpers use $env:SystemDrive and CIM
classes that ship with every Windows install; Lua wrappers resolve
the helper path via jarvis.context.command_path (no hardcoded user
profile paths or absolute C:\ refs).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

resources/commands/sysinfo/command.toml

@@ -0,0 +1,152 @@
+[[commands]]
+id = "sysinfo_battery"
+type = "lua"
+script = "battery.lua"
+sandbox = "full"
+timeout = 5000
+
+[commands.phrases]
+ru = [
+    "сколько заряда",
+    "сколько батарея",
+    "заряд батареи",
+    "сколько процентов",
+]
+en = [
+    "battery level",
+    "how much battery",
+    "battery status",
+]
+ua = [
+    "скільки заряду",
+    "заряд батареї",
+]
+
+
+[[commands]]
+id = "sysinfo_time"
+type = "lua"
+script = "time.lua"
+sandbox = "full"
+timeout = 3000
+
+[commands.phrases]
+ru = [
+    "сколько времени",
+    "который час",
+    "сколько сейчас времени",
+    "какой день",
+    "какое сегодня число",
+]
+en = [
+    "what time is it",
+    "current time",
+    "what day is it",
+    "what is the date",
+]
+ua = [
+    "котра година",
+    "скільки часу",
+    "який сьогодні день",
+]
+
+
+[[commands]]
+id = "sysinfo_cpu"
+type = "lua"
+script = "cpu.lua"
+sandbox = "full"
+timeout = 8000
+
+[commands.phrases]
+ru = [
+    "загрузка процессора",
+    "сколько процессор",
+    "нагрузка цпу",
+    "что с процессором",
+]
+en = [
+    "cpu load",
+    "cpu usage",
+    "how is cpu",
+]
+ua = [
+    "завантаження процесора",
+    "як процесор",
+]
+
+
+[[commands]]
+id = "sysinfo_ram"
+type = "lua"
+script = "ram.lua"
+sandbox = "full"
+timeout = 5000
+
+[commands.phrases]
+ru = [
+    "сколько памяти",
+    "сколько оперативки",
+    "загрузка оперативки",
+    "сколько свободной памяти",
+]
+en = [
+    "how much ram",
+    "ram usage",
+    "memory usage",
+]
+ua = [
+    "скільки пам'яті",
+    "скільки оперативки",
+]
+
+
+[[commands]]
+id = "sysinfo_disk"
+type = "lua"
+script = "disk.lua"
+sandbox = "full"
+timeout = 5000
+
+[commands.phrases]
+ru = [
+    "сколько свободно на диске",
+    "сколько места на диске",
+    "сколько места на жёстком",
+    "сколько свободно",
+]
+en = [
+    "free disk space",
+    "how much disk space",
+    "disk usage",
+]
+ua = [
+    "скільки вільно на диску",
+    "скільки місця на диску",
+]
+
+
+[[commands]]
+id = "sysinfo_all"
+type = "lua"
+script = "all.lua"
+sandbox = "full"
+timeout = 10000
+
+[commands.phrases]
+ru = [
+    "статус системы",
+    "что с компьютером",
+    "состояние пк",
+    "что по системе",
+    "статус",
+]
+en = [
+    "system status",
+    "how is the system",
+    "pc status",
+]
+ua = [
+    "статус системи",
+    "стан пк",
+]