fix: cyrillic fonts, dev certs, page head, and ru-text typography (#67)

🤖 PR generated for branch `fix/cyrillic-fonts-dev-certs-and-page-head`.

### Changes Summary
- **Fonts**: Add Cyrillic glyph subsets for Lato, EB Garamond, and Fira
Code.
- **Dev**: Support remote Root CA and encrypted dev CA key in
`.env.dev`.
- **UI & Kits**: Add size variant to `Breadcrumbs` component and enlarge
`PageHead` breadcrumbs with tuned collapse scroll threshold.
- **ESLint**: Add `no-hanging-particles` i18n & markdown typography rule
with auto-fixer.
- **Content & i18n**: Apply `ru-text` editorial and typography polish
(em dashes, number ranges, «ё» restoration, non-breaking spaces) across
`services/www` and `services/docs`.

services/docs/content/en/quetza/guides/conversational-ai.md

@@ -3,26 +3,26 @@ title: Conversational AI Integration
 weight: 4
 ---
 
-**Goal:** Integrate Large Language Models (LLMs) while managing context and Discord's timeout constraints.
+**Goal:** Integrate Large Language Models (LLMs) while managing context and Discord's timeout constraints.
 
 ## 1. Context Management Strategy
 
-Conversations require history to be coherent.
+Conversations require history to be coherent.
 
 - **Scoping:** `Map<GuildID, Map<UserID, Message[]>>`
   - **Guild Key:** Prevents cross-server leaks.
-  - **User Key:** Prevents cross-user confusion in public channels.
-- **Lifecycle:** Implement a rolling window (e.g., last 50 messages) to prevent context bloat.
+  - **User Key:** Prevents cross-user confusion in public channels.
+- **Lifecycle:** Implement a rolling window (e.g., last 50 messages) to prevent context bloat.
 
 ## 2. Response Streaming
 
-LLMs are slow; Discord is fast (3s timeout).
+LLMs are slow; Discord is fast (3s timeout).
 
 {{% steps %}}
 
 ### Step 1: Defer Interaction
 
-Immediately call `interaction.deferReply()`. This buys you 15 minutes.
+Immediately call `interaction.deferReply()`. This buys you 15 minutes.
 
 ### Step 2: Invoke LLM
 
@@ -53,4 +53,4 @@ export async function execute(interaction, controller) {
 
 > [!WARNING]
 > **API Costs:**
-> AI APIs are often billed by token. Implement strict user-based rate limits in your Controller to prevent abuse.
+> AI APIs are often billed by token. Implement strict user-based rate limits in your Controller to prevent abuse.