feat(commands): analog-inspired tier-2 — news, currency, crypto, fun, wiki, power, help (33 packs)

Seven more portable Lua packs lifted from common voice-assistant
playbooks (Siri/Alexa/Алиса/Cortana). All sandbox=full, jarvis.http
+ jarvis.system.exec, zero new Rust code. cargo test still 3/3.

news/ — pulls Lenta.ru RSS (en switches to BBC), regex-extracts the
top 5 <title> entries (skipping the channel header), drops them into
the clipboard, then asks Groq for a 2-3 sentence summary at temp 0.4
and speaks it via SAPI. If GROQ_TOKEN is missing it falls back to
just reading the first three headlines.

currency/ — cbr-xml-daily.ru/daily_json.js. Picks USD/EUR/CNY/GBP/
JPY/KZT by keyword in the phrase, computes value / nominal, diffs
against Valute.Previous, says "X стоит N рублей, поднялся/опустился
на M" with ▲/▼ in the notify body.

crypto/ — CoinGecko simple/price with usd,rub and 24hr_change.
Recognises bitcoin / ethereum / solana / dogecoin / the-open-network.
Reports price + direction in plain Russian.

fun/ — joke / fact / quote / compliment, single ask.lua dispatched by
command_id. Per-command system prompt at temp 1.0; seeds with a
random integer so consecutive calls don't repeat.

wiki/ — ru.wikipedia opensearch → REST summary endpoint. If Groq is
available and extract > 350 chars, asks for a 2-3 sentence retell;
otherwise speaks the first 400 chars verbatim. Full extract goes to
clipboard.

power/ — shutdown_pc / restart_pc / sleep_pc / hibernate_pc /
logoff_user / cancel_shutdown. Single act.lua keyed by command_id.
shutdown/restart use shutdown.exe /s|/r /t 30 with a /c message —
30-second grace window so "отмени выключение" actually works.
sleep uses rundll32 powrprof,SetSuspendState, hibernate uses
shutdown.exe /h.

help/ — "что ты умеешь". Reads the parent commands/ dir via
jarvis.fs.list, sorts subdirs (pack names), pairs each with a
hardcoded Russian/English one-liner description, copies the full
list to clipboard and speaks a count + "see clipboard for full list".

Total command packs is now 33 (was 26).

resources/commands/currency/rate.lua

@@ -0,0 +1,59 @@
+local phrase = (jarvis.context.phrase or ""):lower()
+
+local target = "usd"
+if phrase:find("евро") or phrase:find("eur") then target = "eur"
+elseif phrase:find("юан") or phrase:find("cny") or phrase:find("yuan") then target = "cny"
+elseif phrase:find("фунт") or phrase:find("gbp") then target = "gbp"
+elseif phrase:find("йен") or phrase:find("jpy") then target = "jpy"
+elseif phrase:find("тенге") or phrase:find("kzt") then target = "kzt"
+end
+
+local res = jarvis.http.json("https://www.cbr-xml-daily.ru/daily_json.js")
+if not res or type(res) ~= "table" or not res.Valute then
+    jarvis.system.notify("Курс", "Не получил данные ЦБ")
+    jarvis.audio.play_error()
+    return { chain = false }
+end
+
+local labels = {
+    usd = "Доллар",  eur = "Евро",  cny = "Юань",
+    gbp = "Фунт",    jpy = "Йена", kzt = "Тенге",
+}
+local code = target:upper()
+local v = res.Valute[code]
+if not v then
+    jarvis.system.notify("Курс", "Нет данных по " .. code)
+    jarvis.audio.play_not_found()
+    return { chain = false }
+end
+
+local value = v.Value
+local prev  = v.Previous or value
+local diff  = value - prev
+local arrow = diff > 0 and "▲" or (diff < 0 and "▼" or "=")
+local nominal = v.Nominal or 1
+
+local title = string.format("%s: %.2f ₽ %s", labels[target] or code, value / nominal, arrow)
+local detail = string.format("вчера %.2f, изменение %+.2f", prev / nominal, diff / nominal)
+
+jarvis.system.notify(title, detail)
+jarvis.log("info", title .. " | " .. detail)
+
+local say
+if diff > 0 then
+    say = string.format("%s стоит %.2f рубля, поднялся на %.2f.", labels[target] or code, value / nominal, math.abs(diff) / nominal)
+elseif diff < 0 then
+    say = string.format("%s стоит %.2f рубля, опустился на %.2f.", labels[target] or code, value / nominal, math.abs(diff) / nominal)
+else
+    say = string.format("%s стоит %.2f рубля, без изменений.", labels[target] or code, value / nominal)
+end
+
+local sapi = say:gsub("'", "''")
+local ps = string.format(
+    [[Add-Type -AssemblyName System.Speech; $s = New-Object System.Speech.Synthesis.SpeechSynthesizer; foreach ($v in $s.GetInstalledVoices()) { if ($v.VoiceInfo.Culture.TwoLetterISOLanguageName -eq 'ru') { try { $s.SelectVoice($v.VoiceInfo.Name); break } catch {} } } $s.Speak('%s')]],
+    sapi
+)
+jarvis.system.exec(string.format('powershell -NoProfile -Command "%s"', ps:gsub('"', '\\"')))
+
+jarvis.audio.play_ok()
+return { chain = false }