Enhance payment processing and rental features

- Updated the BTCPay service to support internal Lightning invoices with private route hints, improving payment routing for users with private channels.
- Added reconciliation methods for pending rents and subscriptions to ensure missed payments are processed on startup.
- Enhanced the rental and subscription services to handle payments in satoshis, aligning with Lightning Network standards.
- Improved the rental modal and content detail components to display rental status and pricing more clearly, including a countdown for rental expiration.
- Refactored various components to streamline user experience and ensure accurate rental access checks.

src/services/indeehub-api.service.ts

@@ -22,16 +22,22 @@ class IndeehubApiService {
       },
     })
 
-    // Attach JWT token from NIP-98 session
-    this.client.interceptors.request.use((config) => {
-      const token = nip98Service.accessToken
+    // Attach JWT token from NIP-98 session.
+    // If the token has expired but we have a refresh token, proactively
+    // refresh before sending the request to avoid unnecessary 401 round-trips.
+    this.client.interceptors.request.use(async (config) => {
+      let token = nip98Service.accessToken
+      if (!token && sessionStorage.getItem('indeehub_api_refresh')) {
+        token = await nip98Service.refresh()
+      }
       if (token) {
         config.headers.Authorization = `Bearer ${token}`
       }
       return config
     })
 
-    // Auto-refresh on 401
+    // Auto-refresh on 401 (fallback if the proactive refresh above
+    // didn't happen or the token expired mid-flight)
     this.client.interceptors.response.use(
       (response) => response,
       async (error) => {