Use Silo for bundled object storage (#8023)

.github/workflows/_ci-desktop.yml

@@ -122,7 +122,9 @@ jobs:
   desktop-smoke-e2e:
     name: Desktop Smoke E2E (${{ matrix.shard }})
     runs-on: ubuntu-latest
-    timeout-minutes: 30
+    # Chromium dependency setup can take 10m; a serial smoke shard needs
+    # ~25m. Leave time for the full suite and its reports to finish.
+    timeout-minutes: 45
     if: github.event_name == 'push' || inputs.desktop || inputs.desktop_rust || inputs.rust
     strategy:
       fail-fast: false

.github/workflows/_ci-relay.yml

@@ -209,8 +209,6 @@ jobs:
             --archive-file target/ci/postgres-tests.tar.zst
 
   desktop-e2e-integration-shard:
-    env:
-      COMPOSE_FILE: docker-compose.yml:docker-compose.ci.yml
     name: Desktop E2E Integration (${{ matrix.shard }}/2)
     runs-on: ubuntu-latest
     timeout-minutes: 20
@@ -404,8 +402,6 @@ jobs:
           echo "Desktop E2E Integration shards passed"
 
   backend-integration:
-    env:
-      COMPOSE_FILE: docker-compose.yml:docker-compose.ci.yml
     name: Backend Integration (relay e2e)
     runs-on: ubuntu-latest
     timeout-minutes: 20
@@ -576,8 +572,6 @@ jobs:
           if-no-files-found: ignore
 
   relay-e2e:
-    env:
-      COMPOSE_FILE: docker-compose.yml:docker-compose.ci.yml
     name: Relay E2E
     runs-on: ubuntu-latest
     timeout-minutes: 20

.github/workflows/mesh-lifecycle.yml

@@ -49,8 +49,6 @@ env:
 
 jobs:
   lifecycle-smoke:
-    env:
-      COMPOSE_FILE: docker-compose.yml:docker-compose.ci.yml
     name: Relay-Driven Mesh Lifecycle Smoke
     runs-on: ubuntu-24.04
     timeout-minutes: 45