fix(db): 重编号 Pages 部署源迁移避免版本冲突

main 已占用 202607190001（OpenResty 默认限流），
将 Pages source runtime / scanner seed 顺延为
202607190002、202607190003，并同步迁移测试期望配置数。

internal/db/migrator/migrator_test.go

@@ -19,8 +19,9 @@ import (
 )
 
 // expectedMigratedSystemConfigCount 包含初始 32 项系统配置、202606220004
-// 从 of_options 迁移过来的 48 项业务配置，以及 Pages 的 2 项业务配置。
-const expectedMigratedSystemConfigCount = 82
+// 从 of_options 迁移过来的 48 项业务配置、Pages 的 2 项业务配置，
+// 以及 OpenResty 默认限流的 3 项业务配置。
+const expectedMigratedSystemConfigCount = 85
 
 func TestMigrateInitializesSQLiteDatabase(t *testing.T) {
 	sqliteDB, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{

internal/db/migrator/pages_source_migration_test.go

@@ -21,8 +21,8 @@ import (
 )
 
 const (
-	pagesSourcePreviousMigration = int64(202607180001)
-	pagesSourceMigration         = int64(202607190001)
+	pagesSourcePreviousMigration = int64(202607190001)
+	pagesSourceMigration         = int64(202607190002)
 	pagesMigrationProjectID      = uint(900001)
 	pagesMigrationDeploymentID   = uint(900001)
 )

internal/db/migrator/pages_source_scan_migration_test.go

@@ -21,8 +21,8 @@ import (
 )
 
 const (
-	pagesSourceScanPreviousMigration = int64(202607190001)
-	pagesSourceScanMigration         = int64(202607190002)
+	pagesSourceScanPreviousMigration = int64(202607190002)
+	pagesSourceScanMigration         = int64(202607190003)
 	pagesSourceScanTaskType          = "of_pages_source_scan"
 )
 
@@ -114,8 +114,8 @@ func runPagesSourceScanScheduleMigration(
 
 func TestPagesSourceScanScheduleMigrationsUseDatabaseGeneratedIDs(t *testing.T) {
 	for _, name := range []string{
-		"goose/postgres/202607190002_seed_pages_source_scan.sql",
-		"goose/sqlite/202607190002_seed_pages_source_scan.sql",
+		"goose/postgres/202607190003_seed_pages_source_scan.sql",
+		"goose/sqlite/202607190003_seed_pages_source_scan.sql",
 	} {
 		t.Run(name, func(t *testing.T) {
 			content, err := migrationFS.ReadFile(name)
@@ -126,7 +126,7 @@ func TestPagesSourceScanScheduleMigrationsUseDatabaseGeneratedIDs(t *testing.T)
 		})
 	}
 
-	postgresContent, err := migrationFS.ReadFile("goose/postgres/202607190002_seed_pages_source_scan.sql")
+	postgresContent, err := migrationFS.ReadFile("goose/postgres/202607190003_seed_pages_source_scan.sql")
 	require.NoError(t, err)
 	compactPostgres := strings.Join(strings.Fields(strings.ToLower(string(postgresContent))), " ")
 	assert.Contains(