step 1: rename module chat-switchboard → switchboard-core

- go.mod module name
- All 714 import references across 289 Go files
- VERSION: 0.1.0
- CI DB names: switchboard_core_{ci,dev,test}
- Docker image: gobha/switchboard-core
- Test fixtures: JWT issuer, repo names
- .env.example, docker-compose container name
- Compiles clean (go build exit 0)

server/handlers/auth_test.go

@@ -14,9 +14,9 @@ import (
 	"github.com/golang-jwt/jwt/v5"
 	"golang.org/x/crypto/bcrypt"
 
-	"chat-switchboard/auth"
-	"chat-switchboard/config"
-	"chat-switchboard/store"
+	"switchboard-core/auth"
+	"switchboard-core/config"
+	"switchboard-core/store"
 )
 
 func testConfig() *config.Config {
@@ -44,7 +44,7 @@ func TestJWTGeneration(t *testing.T) {
 		RegisteredClaims: jwt.RegisteredClaims{
 			IssuedAt:  jwt.NewNumericDate(now),
 			ExpiresAt: jwt.NewNumericDate(now.Add(15 * time.Minute)),
-			Issuer:    "chat-switchboard",
+			Issuer:    "switchboard-core",
 		},
 	}