add new content for ru locale, and localize es navbar

www/i18n/ru/docusaurus-plugin-content-docs/current/content-packs/apps.mdx

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+---
+title: "Приложения"
+nav_order: 2
+parent: "Наборы контента"
+---
+
+# Приложения
+
+Если вы назовёте папку  `appstore`  и поместите её в корневую директорию USB-накопителя, на портале Butter Box появится иконка **Приложения**.

www/i18n/ru/docusaurus-plugin-content-docs/current/rcbox-topologies.mdx

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+# RCBox Network Topologies
+
+RCBox is a Raspberry Pi–powered micro server and Wi-Fi hotspot that serves
+static content offline and hosts secure messaging and public chat.
+
+## 1. Standalone Offline — Direct Wi-Fi Clients
+
+A single RCBox acts as an access point; clients associate directly to its
+Wi-Fi radio. No internet, no upstream — fully self-contained.
+
+```mermaid
+flowchart TB
+    subgraph RCBox["RCBox (Raspberry Pi)"]
+        AP["Wi-Fi Access Point"]
+        WEB["Static Content Server"]
+        MSG["Secure Messaging"]
+        CHAT["Public Chat Room"]
+        AP --- WEB
+        AP --- MSG
+        AP --- CHAT
+    end
+
+    LAPTOP["Laptop"]
+    PHONE1["Phone"]
+    PHONE2["Phone"]
+    TABLET["Tablet"]
+
+    LAPTOP -. "Wi-Fi" .-> AP
+    PHONE1 -. "Wi-Fi" .-> AP
+    PHONE2 -. "Wi-Fi" .-> AP
+    TABLET -. "Wi-Fi" .-> AP
+```
+
+## 2. Multiple RCBoxes on a Wired LAN
+
+Several RCBoxes are joined by Ethernet and share data peer-to-peer across
+the wired backbone. Each RCBox continues to serve its own Wi-Fi clients.
+
+```mermaid
+flowchart TB
+    SWITCH["Ethernet Switch / Wired LAN"]
+
+    subgraph BOX1["RCBox #1"]
+        AP1["Wi-Fi AP"]
+        SVC1["Content / Msg / Chat"]
+        ETH1["Ethernet"]
+        AP1 --- SVC1
+        SVC1 --- ETH1
+    end
+
+    subgraph BOX2["RCBox #2"]
+        AP2["Wi-Fi AP"]
+        SVC2["Content / Msg / Chat"]
+        ETH2["Ethernet"]
+        AP2 --- SVC2
+        SVC2 --- ETH2
+    end
+
+    subgraph BOX3["RCBox #3"]
+        AP3["Wi-Fi AP"]
+        SVC3["Content / Msg / Chat"]
+        ETH3["Ethernet"]
+        AP3 --- SVC3
+        SVC3 --- ETH3
+    end
+
+    ETH1 --- SWITCH
+    ETH2 --- SWITCH
+    ETH3 --- SWITCH
+
+    C1["Laptop"] -. "Wi-Fi" .-> AP1
+    C2["Phone"]  -. "Wi-Fi" .-> AP1
+    C3["Phone"]  -. "Wi-Fi" .-> AP2
+    C4["Tablet"] -. "Wi-Fi" .-> AP2
+    C5["Laptop"] -. "Wi-Fi" .-> AP3
+
+    SVC1 <== "peer sync" ==> SVC2
+    SVC2 <== "peer sync" ==> SVC3
+    SVC1 <== "peer sync" ==> SVC3
+```
+
+## 3. RCBox with Wi-Fi HaLow Extended Range
+
+An RCBox uplinks to a Wi-Fi HaLow hub router. Remote endpoints reach the
+hub via HaLow bridges — one bridging a client device, another bridging a
+second RCBox at distance.
+
+```mermaid
+flowchart TB
+    subgraph BOX1["RCBox #1 (primary)"]
+        AP1["Wi-Fi AP (2.4/5 GHz)"]
+        SVC1["Content / Msg / Chat"]
+        AP1 --- SVC1
+    end
+
+    HUB["Wi-Fi HaLow Hub Router"]
+
+    BR1["HaLow Bridge A"]
+    BR2["HaLow Bridge B"]
+
+    CLIENT["Remote Client (Laptop)"]
+
+    subgraph BOX2["RCBox #2 (remote)"]
+        AP2["Wi-Fi AP"]
+        SVC2["Content / Msg / Chat"]
+        AP2 --- SVC2
+    end
+
+    LOCAL1["Phone"] -. "Wi-Fi" .-> AP1
+    LOCAL2["Laptop"] -. "Wi-Fi" .-> AP1
+
+    BOX1 <== "Ethernet / Wi-Fi" ==> HUB
+    HUB <-. "HaLow (long range)" .-> BR1
+    HUB <-. "HaLow (long range)" .-> BR2
+
+    BR1 --- CLIENT
+    BR2 === BOX2
+
+    LOCAL3["Phone"] -. "Wi-Fi" .-> AP2
+
+    SVC1 <== "peer sync over HaLow" ==> SVC2
+```
+
+## 4. Opportunistic Mobile Mesh
+
+A stationary RCBox anchors a location. Mobile RCBoxes — one mounted in a
+bus, another on a motorcycle — carry data as they move, syncing
+opportunistically whenever they come within Wi-Fi range of the base or
+each other (a store-and-forward "sneakernet over Wi-Fi").
+
+```mermaid
+flowchart TB
+    subgraph BASE["Stationary RCBox (fixed location)"]
+        APB["Wi-Fi AP"]
+        SVCB["Content / Msg / Chat"]
+        STOREB[("Local Data Store")]
+        APB --- SVCB
+        SVCB --- STOREB
+    end
+
+    LC1["Local Phone"] -. "Wi-Fi" .-> APB
+    LC2["Local Laptop"] -. "Wi-Fi" .-> APB
+
+    subgraph BUS["Mobile RCBox — Bus"]
+        APBUS["Wi-Fi AP"]
+        SVCBUS["Content / Msg / Chat"]
+        STOREBUS[("Local Data Store")]
+        APBUS --- SVCBUS
+        SVCBUS --- STOREBUS
+    end
+
+    PBUS1["Passenger Phone"] -. "Wi-Fi" .-> APBUS
+    PBUS2["Passenger Phone"] -. "Wi-Fi" .-> APBUS
+
+    subgraph MOTO["Mobile RCBox — Motorcycle"]
+        APM["Wi-Fi AP"]
+        SVCM["Content / Msg / Chat"]
+        STOREM[("Local Data Store")]
+        APM --- SVCM
+        SVCM --- STOREM
+    end
+
+    RIDER["Rider Phone"] -. "Wi-Fi" .-> APM
+
+    SVCB  <-. "sync when in range" .-> SVCBUS
+    SVCB  <-. "sync when in range" .-> SVCM
+    SVCBUS <-. "sync when in range" .-> SVCM
+```
+