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/wiki/wiki.lua

@@ -0,0 +1,103 @@
+local lang = jarvis.context.language
+local phrase = (jarvis.context.phrase or ""):lower()
+
+local triggers = {
+    "найди в википедии про", "википедия про", "расскажи про",
+    "кто такая", "кто такой", "что такое",
+    "tell me about", "wikipedia about", "who is", "what is",
+    "розкажи про", "хто такий", "що таке",
+}
+local query = phrase
+for _, t in ipairs(triggers) do
+    local s, e = string.find(query, t, 1, true)
+    if s == 1 then
+        query = query:sub(e + 1)
+        break
+    end
+end
+query = query:gsub("^%s+", ""):gsub("%s+$", "")
+
+if query == "" then
+    jarvis.system.notify("Wiki", lang == "ru" and "О чём рассказать?" or "What to look up?")
+    jarvis.audio.play_error()
+    return { chain = false }
+end
+
+local function url_encode(s)
+    return (s:gsub("([^%w%-_%.~])", function(c) return string.format("%%%02X", string.byte(c)) end))
+end
+
+local host = lang == "en" and "en.wikipedia.org" or "ru.wikipedia.org"
+
+local search_url = string.format(
+    "https://%s/w/api.php?action=opensearch&search=%s&limit=1&format=json",
+    host, url_encode(query)
+)
+local search = jarvis.http.get(search_url)
+if not search.ok then
+    jarvis.system.notify("Wiki", "Поиск не удался")
+    jarvis.audio.play_error()
+    return { chain = false }
+end
+
+local title = search.body:match('%["[^"]+",%s*%["([^"]+)"')
+if not title or title == "" then
+    jarvis.system.notify("Wiki", (lang == "ru" and "Не нашёл: " or "Not found: ") .. query)
+    jarvis.audio.play_not_found()
+    return { chain = false }
+end
+
+local summary_url = string.format(
+    "https://%s/api/rest_v1/page/summary/%s",
+    host, url_encode(title)
+)
+local summary = jarvis.http.json(summary_url)
+if not summary or type(summary) ~= "table" or not summary.extract then
+    jarvis.system.notify("Wiki", "Не получил конспект")
+    jarvis.audio.play_error()
+    return { chain = false }
+end
+
+local extract = summary.extract
+local article_title = summary.title or title
+
+local token = jarvis.system.env("GROQ_TOKEN")
+local say_text = extract:sub(1, 400)
+
+if token and token ~= "" and #extract > 350 then
+    local base  = jarvis.system.env("GROQ_BASE_URL"); if not base or base == "" then base = "https://api.groq.com/openai/v1" end
+    local model = jarvis.system.env("GROQ_MODEL");    if not model or model == "" then model = "llama-3.3-70b-versatile" end
+    local sys = lang == "ru"
+        and "Тебе дана статья из Википедии. Перескажи суть простым разговорным языком в 2-3 предложения. Без 'википедия гласит' и подобных вступлений."
+        or  "Summarise this Wikipedia text in 2-3 plain-language sentences. No 'wikipedia says' preambles."
+    local payload = {
+        model = model,
+        messages = {
+            { role = "system", content = sys },
+            { role = "user",   content = extract:sub(1, 2500) },
+        },
+        max_tokens = 220,
+        temperature = 0.3,
+    }
+    local lr = jarvis.http.post_json(base .. "/chat/completions", payload, { Authorization = "Bearer " .. token })
+    if lr.ok then
+        local c = (lr.body or ""):match('"content"%s*:%s*"(.-[^\\])"')
+        if c then
+            c = c:gsub('\\n', ' '):gsub('\\"', '"'):gsub('\\\\', '\\'):gsub("%s+", " ")
+            say_text = c:gsub("^%s+", ""):gsub("%s+$", "")
+        end
+    end
+end
+
+jarvis.system.clipboard.set(article_title .. "\n\n" .. extract)
+jarvis.system.notify(article_title, say_text:sub(1, 240))
+
+local sapi = say_text:gsub("'", "''"):gsub("\r?\n", " ")
+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 }