refactor(structure): group platform, infra, and shared packages

Reorganize internal packages into platform/infra/shared layers and update
imports, docs, and seed-count tests to match current system configs.

internal/apps/openflare/zone/legacy_import_test.go

@@ -8,7 +8,7 @@ import (
 	"database/sql"
 	"testing"
 
-	"github.com/Rain-kl/Wavelet/internal/db"
+	db "github.com/Rain-kl/Wavelet/internal/infra/persistence"
 	"github.com/glebarez/sqlite"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"

internal/apps/openflare/zone/logics.go

@@ -10,7 +10,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/Rain-kl/Wavelet/internal/db"
+	db "github.com/Rain-kl/Wavelet/internal/infra/persistence"
 	"github.com/Rain-kl/Wavelet/internal/model"
 	"golang.org/x/net/publicsuffix"
 	"gorm.io/gorm"

internal/apps/openflare/zone/logics_test.go

@@ -8,7 +8,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/Rain-kl/Wavelet/internal/db"
+	db "github.com/Rain-kl/Wavelet/internal/infra/persistence"
 	"github.com/Rain-kl/Wavelet/internal/model"
 	"github.com/glebarez/sqlite"
 	"github.com/stretchr/testify/require"

internal/apps/openflare/zone/routers.go

@@ -8,7 +8,7 @@ import (
 	"net/http"
 
 	"github.com/Rain-kl/Wavelet/internal/apps/openflare/apiutil"
-	"github.com/Rain-kl/Wavelet/internal/common/response"
+	"github.com/Rain-kl/Wavelet/internal/shared/response"
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"
 )

internal/apps/openflare/zone/stats.go

@@ -9,7 +9,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/Rain-kl/Wavelet/internal/db"
+	db "github.com/Rain-kl/Wavelet/internal/infra/persistence"
 	"github.com/Rain-kl/Wavelet/internal/model"
 	"gorm.io/gorm"
 )