feat: request a tool when home search finds nothing (#385)

Adds a prefilled 'Request a tool' affordance to the home search empty state and beneath weak results. Opens the in-app feedback dialog with a new search_miss source and a structured search_query when analytics is on; links to a prefilled GitHub Discussions (Ideas) post when off, so a request is never silently dropped. Reuses the existing feedback pipe, dialog, and analytics gate; no new storage. i18n across all 21 locales.

packages/shared/src/i18n/ru.ts

@@ -62,6 +62,9 @@ export const ru: TranslationKeys = {
     submit: "Send feedback",
     submitting: "Sending...",
     submitFailed: "Feedback could not be sent. Please try again.",
+    searchMissTitle: "Запросить инструмент",
+    searchMissContext: "Вы искали: {query}",
+    searchMissDiscussionsFallback: "Не удалось записать. Откройте запрос в Discussions.",
     thanksTitle: "Thanks for the feedback.",
     thanksDescription: "It helps us improve SnapOtter without collecting files or private content.",
     quickThanks: "Thanks for the signal.",
@@ -2948,6 +2951,8 @@ export const ru: TranslationKeys = {
     gettingStarted: "Начало работы",
     noToolsMatch: "Инструменты по запросу '{query}' не найдены",
     clearSearch: "Очистить поиск",
+    requestToolCta: "Запросить '{query}'",
+    requestToolBelowResults: "Не нашли? Запросите инструмент",
     all: "Все",
     documents: "PDF",
     data: "Файлы",