- Replace bbernhard/signal-cli-rest-api wrapper with native signal-cli 0.14.5
- Run signal-cli daemon in HTTP mode matching astro-orbiter working config
- Expose JSON-RPC API at /api/v1/rpc for Hermes gateway compatibility
- Switch health probes from HTTP /v1/health to TCP port check
- Maintain existing PVC mount path /home/.local/share/signal-cli
This fixes the missing /api/v1/rpc endpoint that Hermes requires for
Signal message delivery.
