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).

resources/commands/media/_media_helper.ps1

@@ -0,0 +1,20 @@
+param(
+    [Parameter(Mandatory=$true)]
+    [ValidateSet("play_pause","next","prev","stop")]
+    [string]$Action
+)
+
+Add-Type -Name MediaKey -Namespace Win32 -MemberDefinition @'
+[DllImport("user32.dll")]
+public static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, System.UIntPtr dwExtraInfo);
+'@
+
+$vk = switch ($Action) {
+    "play_pause" { 0xB3 }
+    "next"       { 0xB0 }
+    "prev"       { 0xB1 }
+    "stop"       { 0xB2 }
+}
+
+[Win32.MediaKey]::keybd_event($vk, 0, 0, [UIntPtr]::Zero)
+[Win32.MediaKey]::keybd_event($vk, 0, 2, [UIntPtr]::Zero)

resources/commands/media/command.toml

@@ -0,0 +1,103 @@
+[[commands]]
+id = "media_play_pause"
+type = "lua"
+script = "play_pause.lua"
+sandbox = "full"
+timeout = 3000
+
+[commands.phrases]
+ru = [
+    "пауза",
+    "поставь на паузу",
+    "продолжи",
+    "включи музыку",
+    "запусти музыку",
+    "плей",
+]
+en = [
+    "pause",
+    "play",
+    "resume",
+    "play music",
+]
+ua = [
+    "пауза",
+    "продовж",
+    "включи музику",
+]
+
+
+[[commands]]
+id = "media_next"
+type = "lua"
+script = "next_track.lua"
+sandbox = "full"
+timeout = 3000
+
+[commands.phrases]
+ru = [
+    "следующий трек",
+    "следующая песня",
+    "переключи трек",
+    "следующая",
+    "дальше",
+]
+en = [
+    "next track",
+    "next song",
+    "skip",
+    "next",
+]
+ua = [
+    "наступний трек",
+    "наступна пісня",
+    "далі",
+]
+
+
+[[commands]]
+id = "media_prev"
+type = "lua"
+script = "prev_track.lua"
+sandbox = "full"
+timeout = 3000
+
+[commands.phrases]
+ru = [
+    "предыдущий трек",
+    "предыдущая песня",
+    "верни песню",
+    "назад",
+]
+en = [
+    "previous track",
+    "previous song",
+    "back",
+]
+ua = [
+    "попередній трек",
+    "назад",
+]
+
+
+[[commands]]
+id = "media_stop"
+type = "lua"
+script = "stop_media.lua"
+sandbox = "full"
+timeout = 3000
+
+[commands.phrases]
+ru = [
+    "стоп музыка",
+    "останови музыку",
+    "выключи музыку",
+]
+en = [
+    "stop music",
+    "stop playback",
+]
+ua = [
+    "стоп музика",
+    "вимкни музику",
+]

resources/commands/media/next_track.lua

@@ -0,0 +1,13 @@
+local helper = jarvis.context.command_path .. "\\_media_helper.ps1"
+local cmd = string.format(
+    'powershell -NoProfile -ExecutionPolicy Bypass -File "%s" -Action next',
+    helper
+)
+local res = jarvis.system.exec(cmd)
+if res.success then
+    jarvis.audio.play_ok()
+else
+    jarvis.log("error", "media next failed: " .. tostring(res.stderr))
+    jarvis.audio.play_error()
+end
+return { chain = false }

resources/commands/media/play_pause.lua

@@ -0,0 +1,13 @@
+local helper = jarvis.context.command_path .. "\\_media_helper.ps1"
+local cmd = string.format(
+    'powershell -NoProfile -ExecutionPolicy Bypass -File "%s" -Action play_pause',
+    helper
+)
+local res = jarvis.system.exec(cmd)
+if res.success then
+    jarvis.audio.play_ok()
+else
+    jarvis.log("error", "play/pause failed: " .. tostring(res.stderr))
+    jarvis.audio.play_error()
+end
+return { chain = false }

resources/commands/media/prev_track.lua

@@ -0,0 +1,13 @@
+local helper = jarvis.context.command_path .. "\\_media_helper.ps1"
+local cmd = string.format(
+    'powershell -NoProfile -ExecutionPolicy Bypass -File "%s" -Action prev',
+    helper
+)
+local res = jarvis.system.exec(cmd)
+if res.success then
+    jarvis.audio.play_ok()
+else
+    jarvis.log("error", "media prev failed: " .. tostring(res.stderr))
+    jarvis.audio.play_error()
+end
+return { chain = false }

resources/commands/media/stop_media.lua

@@ -0,0 +1,13 @@
+local helper = jarvis.context.command_path .. "\\_media_helper.ps1"
+local cmd = string.format(
+    'powershell -NoProfile -ExecutionPolicy Bypass -File "%s" -Action stop',
+    helper
+)
+local res = jarvis.system.exec(cmd)
+if res.success then
+    jarvis.audio.play_ok()
+else
+    jarvis.log("error", "media stop failed: " .. tostring(res.stderr))
+    jarvis.audio.play_error()
+end
+return { chain = false }

resources/commands/sysinfo/_sysinfo.ps1

@@ -0,0 +1,69 @@
+param(
+    [Parameter(Mandatory=$true)]
+    [ValidateSet("battery","time","cpu","ram","disk","all")]
+    [string]$Topic
+)
+
+$ErrorActionPreference = 'SilentlyContinue'
+
+function Get-BatteryInfo {
+    $b = Get-CimInstance -ClassName Win32_Battery
+    if (-not $b) { return "Батарея не обнаружена (видимо, десктоп)" }
+    $pct = [int]$b.EstimatedChargeRemaining
+    $status = switch ($b.BatteryStatus) {
+        1 { "разряжается" }
+        2 { "от сети" }
+        3 { "заряжена" }
+        4 { "низкий заряд" }
+        5 { "критический заряд" }
+        default { "статус $($b.BatteryStatus)" }
+    }
+    return "Батарея: $pct%, $status"
+}
+
+function Get-TimeInfo {
+    $ru = [System.Globalization.CultureInfo]::GetCultureInfo("ru-RU")
+    $now = Get-Date
+    return "Сейчас: " + $now.ToString("HH:mm, dd MMMM, dddd", $ru)
+}
+
+function Get-CpuInfo {
+    $cpu = Get-CimInstance -ClassName Win32_Processor | Select-Object -First 1
+    $load = (Get-CimInstance -ClassName Win32_PerfFormattedData_PerfOS_Processor -Filter "Name='_Total'" -ErrorAction SilentlyContinue).PercentProcessorTime
+    if ($null -eq $load) { $load = $cpu.LoadPercentage }
+    return "CPU: $($cpu.Name.Trim()), загрузка $load%"
+}
+
+function Get-RamInfo {
+    $os = Get-CimInstance -ClassName Win32_OperatingSystem
+    $totalGB = [math]::Round($os.TotalVisibleMemorySize / 1MB, 1)
+    $freeGB = [math]::Round($os.FreePhysicalMemory / 1MB, 1)
+    $usedGB = [math]::Round($totalGB - $freeGB, 1)
+    $pct = [int](($usedGB / $totalGB) * 100)
+    return "RAM: $usedGB из $totalGB ГБ ($pct% занято)"
+}
+
+function Get-DiskInfo {
+    $sys = Get-CimInstance -ClassName Win32_LogicalDisk -Filter "DeviceID='$($env:SystemDrive)'"
+    if (-not $sys) {
+        $sys = Get-CimInstance -ClassName Win32_LogicalDisk -Filter "DriveType=3" | Select-Object -First 1
+    }
+    $freeGB = [math]::Round($sys.FreeSpace / 1GB, 1)
+    $totalGB = [math]::Round($sys.Size / 1GB, 1)
+    return "Диск $($sys.DeviceID): свободно $freeGB из $totalGB ГБ"
+}
+
+switch ($Topic) {
+    "battery" { Get-BatteryInfo }
+    "time"    { Get-TimeInfo }
+    "cpu"     { Get-CpuInfo }
+    "ram"     { Get-RamInfo }
+    "disk"    { Get-DiskInfo }
+    "all" {
+        Get-TimeInfo
+        Get-BatteryInfo
+        Get-CpuInfo
+        Get-RamInfo
+        Get-DiskInfo
+    }
+}

resources/commands/sysinfo/all.lua

@@ -0,0 +1,13 @@
+local helper = jarvis.context.command_path .. "\\_sysinfo.ps1"
+local cmd = string.format('powershell -NoProfile -ExecutionPolicy Bypass -File "%s" -Topic all', helper)
+local res = jarvis.system.exec(cmd)
+local text = (res.stdout or ""):gsub("[\r\n]+$", "")
+if res.success and text ~= "" then
+    jarvis.system.notify("Статус системы", text)
+    jarvis.log("info", text)
+    jarvis.audio.play_ok()
+else
+    jarvis.log("error", "sysinfo all failed: " .. tostring(res.stderr))
+    jarvis.audio.play_error()
+end
+return { chain = false }

resources/commands/sysinfo/battery.lua

@@ -0,0 +1,13 @@
+local helper = jarvis.context.command_path .. "\\_sysinfo.ps1"
+local cmd = string.format('powershell -NoProfile -ExecutionPolicy Bypass -File "%s" -Topic battery', helper)
+local res = jarvis.system.exec(cmd)
+local text = (res.stdout or ""):gsub("[\r\n]+$", "")
+if res.success and text ~= "" then
+    jarvis.system.notify("Батарея", text)
+    jarvis.log("info", text)
+    jarvis.audio.play_ok()
+else
+    jarvis.log("error", "battery info failed: " .. tostring(res.stderr))
+    jarvis.audio.play_error()
+end
+return { chain = false }

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",
+]

resources/commands/sysinfo/cpu.lua

@@ -0,0 +1,13 @@
+local helper = jarvis.context.command_path .. "\\_sysinfo.ps1"
+local cmd = string.format('powershell -NoProfile -ExecutionPolicy Bypass -File "%s" -Topic cpu', helper)
+local res = jarvis.system.exec(cmd)
+local text = (res.stdout or ""):gsub("[\r\n]+$", "")
+if res.success and text ~= "" then
+    jarvis.system.notify("CPU", text)
+    jarvis.log("info", text)
+    jarvis.audio.play_ok()
+else
+    jarvis.log("error", "cpu info failed: " .. tostring(res.stderr))
+    jarvis.audio.play_error()
+end
+return { chain = false }

resources/commands/sysinfo/disk.lua

@@ -0,0 +1,13 @@
+local helper = jarvis.context.command_path .. "\\_sysinfo.ps1"
+local cmd = string.format('powershell -NoProfile -ExecutionPolicy Bypass -File "%s" -Topic disk', helper)
+local res = jarvis.system.exec(cmd)
+local text = (res.stdout or ""):gsub("[\r\n]+$", "")
+if res.success and text ~= "" then
+    jarvis.system.notify("Диск", text)
+    jarvis.log("info", text)
+    jarvis.audio.play_ok()
+else
+    jarvis.log("error", "disk info failed: " .. tostring(res.stderr))
+    jarvis.audio.play_error()
+end
+return { chain = false }

resources/commands/sysinfo/ram.lua

@@ -0,0 +1,13 @@
+local helper = jarvis.context.command_path .. "\\_sysinfo.ps1"
+local cmd = string.format('powershell -NoProfile -ExecutionPolicy Bypass -File "%s" -Topic ram', helper)
+local res = jarvis.system.exec(cmd)
+local text = (res.stdout or ""):gsub("[\r\n]+$", "")
+if res.success and text ~= "" then
+    jarvis.system.notify("Память", text)
+    jarvis.log("info", text)
+    jarvis.audio.play_ok()
+else
+    jarvis.log("error", "ram info failed: " .. tostring(res.stderr))
+    jarvis.audio.play_error()
+end
+return { chain = false }

resources/commands/sysinfo/time.lua

@@ -0,0 +1,13 @@
+local helper = jarvis.context.command_path .. "\\_sysinfo.ps1"
+local cmd = string.format('powershell -NoProfile -ExecutionPolicy Bypass -File "%s" -Topic time', helper)
+local res = jarvis.system.exec(cmd)
+local text = (res.stdout or ""):gsub("[\r\n]+$", "")
+if res.success and text ~= "" then
+    jarvis.system.notify("Время", text)
+    jarvis.log("info", text)
+    jarvis.audio.play_ok()
+else
+    jarvis.log("error", "time info failed: " .. tostring(res.stderr))
+    jarvis.audio.play_error()
+end
+return { chain = false }