fix: recover mempool frontend after backend address changes

apps/archy-mempool-web/manifest.yml

@@ -1,7 +1,7 @@
 app:
   id: archy-mempool-web
   name: Mempool Web
-  version: 3.0.1
+  version: 3.3.1-archy1
   # Where this app comes from, so scripts/check-upstream-releases.py can
   # tell us when the pin below has fallen behind. Without it nothing can:
   # container.image names our mirror, not the project it was mirrored from.
@@ -12,7 +12,7 @@ app:
   container_name: mempool
 
   container:
-    image: source.archipelago-foundation.org/lfg2025/mempool-frontend:v3.3.1
+    image: source.archipelago-foundation.org/lfg2025/mempool-frontend:v3.3.1-archy1
     pull_policy: if-not-present
     network: archy-net
 
@@ -45,7 +45,9 @@ app:
     # first, but nginx binds 0.0.0.0:8080 (IPv4) only -> localhost probe gets
     # "connection refused" -> perpetual unhealthy -> health_monitor restart loop.
     endpoint: http://127.0.0.1:8080
-    path: /
+    # Probe the backend through nginx: a static page can be healthy while
+    # every API/WebSocket request is stuck on a dead backend address.
+    path: /api/v1/backend-info
     interval: 30s
     timeout: 5s
     retries: 3

apps/mempool/manifest.yml

@@ -1,7 +1,7 @@
 app:
   id: mempool
   name: Mempool Explorer
-  version: 3.0.0
+  version: 3.3.1-archy1
   # Where this app comes from, so scripts/check-upstream-releases.py can
   # tell us when the pin below has fallen behind. Without it nothing can:
   # container.image names our mirror, not the project it was mirrored from.
@@ -11,7 +11,7 @@ app:
   description: Bitcoin mempool and blockchain explorer. Real-time transaction and block visualization.
   
   container:
-    image: source.archipelago-foundation.org/lfg2025/mempool-frontend:v3.3.1
+    image: source.archipelago-foundation.org/lfg2025/mempool-frontend:v3.3.1-archy1
     image_signature: cosign://...
     pull_policy: if-not-present