Migrate module path from kyle/ to mc/ org

All import paths updated to git.wntrmute.dev/mc/. Bumps mcdsl to v1.2.0.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

internal/config/config.go

@@ -5,7 +5,7 @@ import (
 	"os"
 	"path/filepath"
 
-	mcdslconfig "git.wntrmute.dev/kyle/mcdsl/config"
+	mcdslconfig "git.wntrmute.dev/mc/mcdsl/config"
 )
 
 // Config is the top-level MCR configuration. It embeds config.Base for
@@ -24,9 +24,10 @@ type StorageConfig struct {
 
 // WebConfig holds the web UI server settings.
 type WebConfig struct {
-	ListenAddr string `toml:"listen_addr"`
-	GRPCAddr   string `toml:"grpc_addr"`
-	CACert     string `toml:"ca_cert"`
+	ListenAddr    string `toml:"listen_addr"`
+	GRPCAddr      string `toml:"grpc_addr"`
+	CACert        string `toml:"ca_cert"`
+	TLSServerName string `toml:"tls_server_name"`
 }
 
 // Load reads a TOML config file, applies environment variable overrides