feat: locale-aware notification templates + UX improvements

- Add locale support to notification templates (matching command template
  pattern): TemplateSlot now has locale field with (config_id, slot_name,
  locale) uniqueness, nested API format {slot: {locale: template}}
- Migration merges separate EN/RU system configs into unified per-provider
  configs; seeds create one config per provider with multi-locale slots
- Locale-aware dispatch with EN fallback in NotificationDispatcher
- Frontend locale tabs (EN/RU) on template config editor
- Fix tracking config cards not showing default provider icons
- Global provider filter, search palette, and various UX polish

packages/server/src/notify_bridge_server/api/providers.py

@@ -369,8 +369,22 @@ async def list_people(
                 provider.config.get("url", ""),
                 provider.config.get("api_key", ""),
             )
-            people_dict = await client.get_people()
-            return [{"id": pid, "name": name} for pid, name in people_dict.items()]
+            try:
+                async with http_session.get(
+                    f"{client.url}/api/people",
+                    headers={"x-api-key": client.api_key},
+                    ssl=False,
+                ) as response:
+                    if response.status == 200:
+                        data = await response.json()
+                        people_list = data.get("people", data) if isinstance(data, dict) else data
+                        return [
+                            {"id": p["id"], "name": p.get("name", "")}
+                            for p in people_list
+                            if p.get("name")
+                        ]
+            except Exception as e:
+                _LOGGER.error("Failed to fetch people: %s", e)
 
     return []