feat: Complete AG Loadbalancer & Cluster API

Refactor routing logic (Chi can be a pain when you're managing large sets of routes, but its one of the better options when considering a potential gRPC future)
       Upgrade API Generation to fully support OAS3.1
      Update swagger interface to RapiDoc - the old swagger interface doesnt support OAS3.1 yet
      Docs are now embedded as part of the UI - once logged in they pick up the cookies and org id from what gets set by the UI, but you can override it
      Other updates include better portability of the db-studio

Signed-off-by: allanice001 <allanice001@gmail.com>

internal/testutil/pgtest/pgtest.go

@@ -0,0 +1,119 @@
+package pgtest
+
+import (
+	"fmt"
+	"log"
+	"sync"
+	"testing"
+	"time"
+
+	embeddedpostgres "github.com/fergusstrange/embedded-postgres"
+	"github.com/glueops/autoglue/internal/db"
+	"github.com/glueops/autoglue/internal/models"
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+)
+
+var (
+	once    sync.Once
+	epg     *embeddedpostgres.EmbeddedPostgres
+	gdb     *gorm.DB
+	initErr error
+	dsn     string
+)
+
+// initDB is called once via sync.Once. It starts embedded Postgres,
+// opens a GORM connection and runs the same migrations as NewRuntime.
+func initDB() {
+	const port uint32 = 55432
+
+	cfg := embeddedpostgres.
+		DefaultConfig().
+		Database("autoglue_test").
+		Username("autoglue").
+		Password("autoglue").
+		Port(port).
+		StartTimeout(30 * time.Second)
+
+	epg = embeddedpostgres.NewDatabase(cfg)
+	if err := epg.Start(); err != nil {
+		initErr = fmt.Errorf("start embedded postgres: %w", err)
+		return
+	}
+
+	dsn = fmt.Sprintf(
+		"host=127.0.0.1 port=%d user=%s password=%s dbname=%s sslmode=disable",
+		port,
+		"autoglue",
+		"autoglue",
+		"autoglue_test",
+	)
+
+	dbConn, err := gorm.Open(postgres.Open(dsn), &gorm.Config{})
+	if err != nil {
+		initErr = fmt.Errorf("open gorm: %w", err)
+		return
+	}
+
+	// Use the same model list as app.NewRuntime so schema matches prod
+	if err := db.Run(
+		dbConn,
+		&models.Job{},
+		&models.MasterKey{},
+		&models.SigningKey{},
+		&models.User{},
+		&models.Organization{},
+		&models.Account{},
+		&models.Membership{},
+		&models.APIKey{},
+		&models.UserEmail{},
+		&models.RefreshToken{},
+		&models.OrganizationKey{},
+		&models.SshKey{},
+		&models.Server{},
+		&models.Taint{},
+		&models.Label{},
+		&models.Annotation{},
+		&models.NodePool{},
+		&models.Cluster{},
+		&models.Credential{},
+		&models.Domain{},
+		&models.RecordSet{},
+	); err != nil {
+		initErr = fmt.Errorf("migrate: %w", err)
+		return
+	}
+
+	gdb = dbConn
+}
+
+// DB returns a lazily-initialized *gorm.DB backed by embedded Postgres.
+//
+// Call this from any test that needs a real DB. If init fails, the test
+// will fail immediately with a clear message.
+func DB(t *testing.T) *gorm.DB {
+	t.Helper()
+	once.Do(initDB)
+	if initErr != nil {
+		t.Fatalf("failed to init embedded postgres: %v", initErr)
+	}
+	return gdb
+}
+
+// URL returns the DSN for the embedded Postgres instance, useful for code
+// that expects a DB URL (e.g. bg.NewJobs).
+func URL(t *testing.T) string {
+	t.Helper()
+	DB(t) // ensure initialized
+	return dsn
+}
+
+// Stop stops the embedded Postgres process. Call from TestMain in at
+// least one package, or let the OS clean it up on process exit.
+func Stop() {
+	if epg != nil {
+		if err := epg.Stop(); err != nil {
+			log.Printf("stop embedded postgres: %v", err)
+		}
+	}
+}