feat: enhance evobgp with new command-line tools for bundle management, including pull, verify, and apply functionalities. Update go.mod to include necessary dependencies and complete todos in architecture plan for improved observability and deployment practices.

internal/config/config.go

@@ -0,0 +1,35 @@
+// Package config loads control-plane settings from the environment (see architecture plan §1).
+package config
+
+import (
+	"os"
+	"strings"
+)
+
+// Env holds shared process configuration for cmd/* entrypoints.
+type Env struct {
+	HTTPAddr    string
+	ServiceName string
+	GitSHA      string
+	// DatabaseURL is the PostgreSQL DSN when SQL-backed repositories are wired (empty in dev).
+	DatabaseURL string
+	// BrokerURL is NATS/Redis when the reference profile uses a message broker (empty in microVPS).
+	BrokerURL string
+}
+
+// Load reads EVOBGP_* environment variables with safe defaults.
+func Load() Env {
+	e := Env{
+		HTTPAddr: ":8080",
+	}
+	if v := strings.TrimSpace(os.Getenv("EVOBGP_HTTP_ADDR")); v != "" {
+		e.HTTPAddr = v
+	}
+	if v := strings.TrimSpace(os.Getenv("EVOBGP_SERVICE")); v != "" {
+		e.ServiceName = v
+	}
+	e.GitSHA = strings.TrimSpace(os.Getenv("EVOBGP_GIT_SHA"))
+	e.DatabaseURL = strings.TrimSpace(os.Getenv("EVOBGP_DATABASE_URL"))
+	e.BrokerURL = strings.TrimSpace(os.Getenv("EVOBGP_BROKER_URL"))
+	return e
+}