fix(signal-cli): use bbernhard image with native signal-cli entrypoint override

- Use bbernhard/signal-cli-rest-api:latest (known working image)
- Override command to run /usr/bin/signal-cli directly in daemon HTTP mode
- Bypasses REST API wrapper to expose native JSON-RPC endpoint at /api/v1/rpc

cluster/applications/signal-cli/deployment.yaml

@@ -22,8 +22,9 @@ spec:
       hostNetwork: true  # Use host network for Signal WebSocket connectivity
       containers:
       - name: signal-cli
-        image: asamk/signal-cli:v0.14.5
+        image: bbernhard/signal-cli-rest-api:latest
         imagePullPolicy: IfNotPresent
+        command: ["/usr/bin/signal-cli"]
         args:
         - "--config"
         - "/home/.local/share/signal-cli"