feat: Implement Session Token System with /api/v1 base path

- Add migration 000004 for sessions table and performance indexes
- Create session.sql queries for CRUD operations
- Generate session repository code with sqlc
- Create token auth middleware for Echo framework
- Create token handler with create/delete/cleanup endpoints
- Add /api/v1 router with token authentication infrastructure
- Update dbHelper.go to use Up() instead of Migrate(2)
- Update server.go to initialize token handler
- Existing endpoints remain functional (to be deprecated)

New endpoints:
- POST /api/v1/token - Create new session token
- DELETE /api/v1/token - Invalidate token
- POST /api/v1/token/cleanup - Remove expired sessions

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

internal/db/dbHelper.go

@@ -136,19 +136,23 @@ func Migrate_db(host string, port string, user string, password string, dbname s
 	//	logging.GetLogger().Error("Force migration error", zap.String("error", err.Error()))
 	//}
 
-	err = m.Migrate(2)
-	//err = m.Up() // or m.Steps(2) if you want to explicitly set the number of migrations to run
+	// Use Up() to apply all pending migrations instead of Migrate(2)
+	err = m.Up()
 	if err != nil {
-		logging.GetLogger().Error("Migration error", zap.String("error", err.Error()))
+		if err == migrate.ErrNoChange {
+			logging.GetLogger().Info("Database already up to date")
+		} else {
+			logging.GetLogger().Error("Migration error", zap.String("error", err.Error()))
+		}
+	} else {
+		versionAfter, _, err := m.Version()
+		if err != nil {
+			logging.GetLogger().Error("Failed to get migration version after", zap.String("error", err.Error()))
+		} else {
+			logging.GetLogger().Info("Migrated to version", zap.Uint("version", versionAfter))
+		}
 	}
 
-	versionAfter, _, err := m.Version()
-	if err != nil {
-		logging.GetLogger().Error("Failed to get migration version after", zap.String("error", err.Error()))
-	}
-
-	logging.GetLogger().Info("Migration version after", zap.Uint("version", versionAfter))
-
 	logging.GetLogger().Info("Migration completed")
 
 	db.Close()