Implement dev mode

.air.toml

@@ -0,0 +1,28 @@
+# Air configuration file for Go live reload
+
+root = "."
+tmp_dir = "tmp"
+
+[build]
+cmd = "go build -o ./tmp/main ./cmd/main.go"
+bin = "./tmp/main"
+include_ext = ["go"]
+exclude_dir = ["tmp", "vendor"]
+exclude_file = []
+follow_symlink = true
+delay = 1000 # ms
+log = "build.log"
+send_interrupt = true 
+kill_delay = 500
+
+[log]
+time = true
+
+[color]
+main = "yellow"
+watcher = "cyan"
+build = "green"
+runner = "magenta"
+
+[misc]
+clean_on_exit = true

.gitignore

@@ -0,0 +1,2 @@
+# air
+tmp

README.md

@@ -1 +1,30 @@
+# Validator Tracker Notifier
 
+## Development Mode (Dev Mode)
+
+This project supports a development mode with automatic reload on code changes using [air](https://github.com/cosmtrek/air).
+
+### Prerequisites
+
+- [Go](https://golang.org/dl/) installed
+- [air](https://github.com/cosmtrek/air) installed (install with `go install github.com/cosmtrek/air@latest`)
+
+### Running in Dev Mode
+
+To start the application in development mode with live reload and debug logging:
+
+```sh
+LOG_LEVEL=DEBUG air
+```
+
+This will watch for file changes and automatically restart the app. You can edit code and see changes reflected immediately.
+
+### Example
+
+```sh
+# Install air if you haven't already
+go install github.com/air-verse/air@latest
+
+# Run in dev mode with debug logs
+LOG_LEVEL=DEBUG air
+```

cmd/main.go

@@ -23,7 +23,7 @@ import (
 func main() {
 	// Load config
 	cfg := config.LoadConfig()
-	logger.Info("Loaded config: network=%s, beaconEndpoint=%s, web3SignerEndpoint=%s",
+	logger.Info("Loaded e config: network=%s, beaconEndpoint=%s, web3SignerEndpoint=%s",
 		cfg.Network, cfg.BeaconEndpoint, cfg.Web3SignerEndpoint)
 
 	// Initialize adapters

internal/adapters/beacon/beacon.go

@@ -18,6 +18,7 @@ import (
 	"github.com/attestantio/go-eth2-client/spec/phase0"
 )
 
+// TODO: should the adapter avoid returning err when initializing?
 // TODO: implement slash method
 
 type beaconAttestantClient struct {

internal/config/config_loader.go

@@ -28,7 +28,7 @@ func LoadConfig() Config {
 	beaconEndpoint := fmt.Sprintf("http://beacon-chain.%s.dncore.dappnode:3500", network)
 	web3SignerEndpoint := fmt.Sprintf("http://web3signer.web3signer-%s.dappnode:9000", network)
 	dappmanagerEndpoint := "http://dappmanager.dappnode"
-	notifierEndpoint := "http://notifier.dappnode:8080"
+	notifierEndpoint := "http://notifier.dappnode:8080f"
 
 	// Allow override via environment variables
 	if envBeacon := os.Getenv("BEACON_ENDPOINT"); envBeacon != "" {