diff --git a/migrations/1722246494_init_admin.go b/migrations/1722246494_init_admin.go
deleted file mode 100644
index 12d99161..00000000
--- a/migrations/1722246494_init_admin.go
+++ /dev/null
@@ -1,29 +0,0 @@
-package migrations
-
-import (
-	"github.com/pocketbase/dbx"
-	"github.com/pocketbase/pocketbase/daos"
-	m "github.com/pocketbase/pocketbase/migrations"
-	"github.com/pocketbase/pocketbase/models"
-)
-
-func init() {
-	m.Register(func(db dbx.Builder) error {
-		// add up queries...
-		dao := daos.New(db)
-
-		admin := &models.Admin{}
-		admin.Email = "admin@essay.com"
-		admin.SetPassword("1234567890")
-		return dao.SaveAdmin(admin)
-	}, func(db dbx.Builder) error {
-		// add down queries...
-		dao := daos.New(db)
-
-		admin, _ := dao.FindAdminByEmail("admin@essay.com")
-		if admin != nil {
-			return dao.DeleteAdmin(admin)
-		}
-		return nil
-	})
-}
diff --git a/migrations/1724212879_collections_snapshot.go b/migrations/1724212879_collections_snapshot.go
deleted file mode 100644
index 6fd8403a..00000000
--- a/migrations/1724212879_collections_snapshot.go
+++ /dev/null
@@ -1,498 +0,0 @@
-package migrations
-
-import (
-	"encoding/json"
-
-	"github.com/pocketbase/dbx"
-	"github.com/pocketbase/pocketbase/daos"
-	m "github.com/pocketbase/pocketbase/migrations"
-	"github.com/pocketbase/pocketbase/models"
-)
-
-func init() {
-	m.Register(func(db dbx.Builder) error {
-		jsonData := `[
-			{
-				"id": "_pb_users_auth_",
-				"created": "2024-07-29 09:44:56.398Z",
-				"updated": "2024-07-29 09:44:56.400Z",
-				"name": "users",
-				"type": "auth",
-				"system": false,
-				"schema": [
-					{
-						"system": false,
-						"id": "users_name",
-						"name": "name",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "users_avatar",
-						"name": "avatar",
-						"type": "file",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"mimeTypes": [
-								"image/jpeg",
-								"image/png",
-								"image/svg+xml",
-								"image/gif",
-								"image/webp"
-							],
-							"thumbs": null,
-							"maxSelect": 1,
-							"maxSize": 5242880,
-							"protected": false
-						}
-					}
-				],
-				"indexes": [],
-				"listRule": "id = @request.auth.id",
-				"viewRule": "id = @request.auth.id",
-				"createRule": "",
-				"updateRule": "id = @request.auth.id",
-				"deleteRule": "id = @request.auth.id",
-				"options": {
-					"allowEmailAuth": true,
-					"allowOAuth2Auth": true,
-					"allowUsernameAuth": true,
-					"exceptEmailDomains": null,
-					"manageRule": null,
-					"minPasswordLength": 8,
-					"onlyEmailDomains": null,
-					"onlyVerified": false,
-					"requireEmail": false
-				}
-			},
-			{
-				"id": "z3p974ainxjqlvs",
-				"created": "2024-07-29 10:02:48.334Z",
-				"updated": "2024-08-21 03:48:45.452Z",
-				"name": "domains",
-				"type": "base",
-				"system": false,
-				"schema": [
-					{
-						"system": false,
-						"id": "iuaerpl2",
-						"name": "domain",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "v98eebqq",
-						"name": "crontab",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "alc8e9ow",
-						"name": "access",
-						"type": "relation",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"collectionId": "4yzbv8urny5ja1e",
-							"cascadeDelete": false,
-							"minSelect": null,
-							"maxSelect": 1,
-							"displayFields": null
-						}
-					},
-					{
-						"system": false,
-						"id": "topsc9bj",
-						"name": "certUrl",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "vixgq072",
-						"name": "certStableUrl",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "g3a3sza5",
-						"name": "privateKey",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "gr6iouny",
-						"name": "certificate",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "tk6vnrmn",
-						"name": "issuerCertificate",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "sjo6ibse",
-						"name": "csr",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "x03n1bkj",
-						"name": "expiredAt",
-						"type": "date",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": "",
-							"max": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "srybpixz",
-						"name": "targetType",
-						"type": "select",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"maxSelect": 1,
-							"values": [
-								"aliyun-oss"
-							]
-						}
-					},
-					{
-						"system": false,
-						"id": "xy7yk0mb",
-						"name": "targetAccess",
-						"type": "relation",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"collectionId": "4yzbv8urny5ja1e",
-							"cascadeDelete": false,
-							"minSelect": null,
-							"maxSelect": 1,
-							"displayFields": null
-						}
-					},
-					{
-						"system": false,
-						"id": "6jqeyggw",
-						"name": "enabled",
-						"type": "bool",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {}
-					},
-					{
-						"system": false,
-						"id": "hdsjcchf",
-						"name": "deployed",
-						"type": "bool",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {}
-					},
-					{
-						"system": false,
-						"id": "aiya3rev",
-						"name": "rightnow",
-						"type": "bool",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {}
-					},
-					{
-						"system": false,
-						"id": "ixznmhzc",
-						"name": "lastDeployedAt",
-						"type": "date",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": "",
-							"max": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "ghtlkn5j",
-						"name": "lastDeployment",
-						"type": "relation",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"collectionId": "0a1o4e6sstp694f",
-							"cascadeDelete": false,
-							"minSelect": null,
-							"maxSelect": 1,
-							"displayFields": null
-						}
-					}
-				],
-				"indexes": [
-					"CREATE UNIQUE INDEX ` + "`" + `idx_4ABO6EQ` + "`" + ` ON ` + "`" + `domains` + "`" + ` (` + "`" + `domain` + "`" + `)"
-				],
-				"listRule": null,
-				"viewRule": null,
-				"createRule": null,
-				"updateRule": null,
-				"deleteRule": null,
-				"options": {}
-			},
-			{
-				"id": "4yzbv8urny5ja1e",
-				"created": "2024-07-29 10:04:39.685Z",
-				"updated": "2024-08-21 03:48:20.637Z",
-				"name": "access",
-				"type": "base",
-				"system": false,
-				"schema": [
-					{
-						"system": false,
-						"id": "geeur58v",
-						"name": "name",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "iql7jpwx",
-						"name": "config",
-						"type": "json",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"maxSize": 2000000
-						}
-					},
-					{
-						"system": false,
-						"id": "hwy7m03o",
-						"name": "configType",
-						"type": "select",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"maxSelect": 1,
-							"values": [
-								"aliyun",
-								"tencent"
-							]
-						}
-					},
-					{
-						"system": false,
-						"id": "lr33hiwg",
-						"name": "deleted",
-						"type": "date",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": "",
-							"max": ""
-						}
-					}
-				],
-				"indexes": [
-					"CREATE UNIQUE INDEX ` + "`" + `idx_wkoST0j` + "`" + ` ON ` + "`" + `access` + "`" + ` (` + "`" + `name` + "`" + `)"
-				],
-				"listRule": null,
-				"viewRule": null,
-				"createRule": null,
-				"updateRule": null,
-				"deleteRule": null,
-				"options": {}
-			},
-			{
-				"id": "0a1o4e6sstp694f",
-				"created": "2024-07-30 06:30:27.801Z",
-				"updated": "2024-08-21 03:48:34.762Z",
-				"name": "deployments",
-				"type": "base",
-				"system": false,
-				"schema": [
-					{
-						"system": false,
-						"id": "farvlzk7",
-						"name": "domain",
-						"type": "relation",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"collectionId": "z3p974ainxjqlvs",
-							"cascadeDelete": false,
-							"minSelect": null,
-							"maxSelect": 1,
-							"displayFields": null
-						}
-					},
-					{
-						"system": false,
-						"id": "jx5f69i3",
-						"name": "log",
-						"type": "json",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"maxSize": 2000000
-						}
-					},
-					{
-						"system": false,
-						"id": "qbxdtg9q",
-						"name": "phase",
-						"type": "select",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"maxSelect": 1,
-							"values": [
-								"check",
-								"apply",
-								"deploy"
-							]
-						}
-					},
-					{
-						"system": false,
-						"id": "rglrp1hz",
-						"name": "phaseSuccess",
-						"type": "bool",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {}
-					},
-					{
-						"system": false,
-						"id": "lt1g1blu",
-						"name": "deployedAt",
-						"type": "date",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": "",
-							"max": ""
-						}
-					}
-				],
-				"indexes": [],
-				"listRule": null,
-				"viewRule": null,
-				"createRule": null,
-				"updateRule": null,
-				"deleteRule": null,
-				"options": {}
-			}
-		]`
-
-		collections := []*models.Collection{}
-		if err := json.Unmarshal([]byte(jsonData), &collections); err != nil {
-			return err
-		}
-
-		return daos.New(db).ImportCollections(collections, true, nil)
-	}, func(db dbx.Builder) error {
-		return nil
-	})
-}
diff --git a/migrations/1724329413_collections_snapshot.go b/migrations/1724329413_collections_snapshot.go
deleted file mode 100644
index c6d23a4f..00000000
--- a/migrations/1724329413_collections_snapshot.go
+++ /dev/null
@@ -1,501 +0,0 @@
-package migrations
-
-import (
-	"encoding/json"
-
-	"github.com/pocketbase/dbx"
-	"github.com/pocketbase/pocketbase/daos"
-	m "github.com/pocketbase/pocketbase/migrations"
-	"github.com/pocketbase/pocketbase/models"
-)
-
-func init() {
-	m.Register(func(db dbx.Builder) error {
-		jsonData := `[
-			{
-				"id": "_pb_users_auth_",
-				"created": "2024-07-29 09:44:56.398Z",
-				"updated": "2024-08-21 04:13:40.056Z",
-				"name": "users",
-				"type": "auth",
-				"system": false,
-				"schema": [
-					{
-						"system": false,
-						"id": "users_name",
-						"name": "name",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "users_avatar",
-						"name": "avatar",
-						"type": "file",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"mimeTypes": [
-								"image/jpeg",
-								"image/png",
-								"image/svg+xml",
-								"image/gif",
-								"image/webp"
-							],
-							"thumbs": null,
-							"maxSelect": 1,
-							"maxSize": 5242880,
-							"protected": false
-						}
-					}
-				],
-				"indexes": [],
-				"listRule": "id = @request.auth.id",
-				"viewRule": "id = @request.auth.id",
-				"createRule": "",
-				"updateRule": "id = @request.auth.id",
-				"deleteRule": "id = @request.auth.id",
-				"options": {
-					"allowEmailAuth": true,
-					"allowOAuth2Auth": true,
-					"allowUsernameAuth": true,
-					"exceptEmailDomains": null,
-					"manageRule": null,
-					"minPasswordLength": 8,
-					"onlyEmailDomains": null,
-					"onlyVerified": false,
-					"requireEmail": false
-				}
-			},
-			{
-				"id": "z3p974ainxjqlvs",
-				"created": "2024-07-29 10:02:48.334Z",
-				"updated": "2024-08-22 08:05:10.026Z",
-				"name": "domains",
-				"type": "base",
-				"system": false,
-				"schema": [
-					{
-						"system": false,
-						"id": "iuaerpl2",
-						"name": "domain",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "v98eebqq",
-						"name": "crontab",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "alc8e9ow",
-						"name": "access",
-						"type": "relation",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"collectionId": "4yzbv8urny5ja1e",
-							"cascadeDelete": false,
-							"minSelect": null,
-							"maxSelect": 1,
-							"displayFields": null
-						}
-					},
-					{
-						"system": false,
-						"id": "topsc9bj",
-						"name": "certUrl",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "vixgq072",
-						"name": "certStableUrl",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "g3a3sza5",
-						"name": "privateKey",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "gr6iouny",
-						"name": "certificate",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "tk6vnrmn",
-						"name": "issuerCertificate",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "sjo6ibse",
-						"name": "csr",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "x03n1bkj",
-						"name": "expiredAt",
-						"type": "date",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": "",
-							"max": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "srybpixz",
-						"name": "targetType",
-						"type": "select",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"maxSelect": 1,
-							"values": [
-								"aliyun-oss",
-								"aliyun-cdn",
-								"ssh"
-							]
-						}
-					},
-					{
-						"system": false,
-						"id": "xy7yk0mb",
-						"name": "targetAccess",
-						"type": "relation",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"collectionId": "4yzbv8urny5ja1e",
-							"cascadeDelete": false,
-							"minSelect": null,
-							"maxSelect": 1,
-							"displayFields": null
-						}
-					},
-					{
-						"system": false,
-						"id": "6jqeyggw",
-						"name": "enabled",
-						"type": "bool",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {}
-					},
-					{
-						"system": false,
-						"id": "hdsjcchf",
-						"name": "deployed",
-						"type": "bool",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {}
-					},
-					{
-						"system": false,
-						"id": "aiya3rev",
-						"name": "rightnow",
-						"type": "bool",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {}
-					},
-					{
-						"system": false,
-						"id": "ixznmhzc",
-						"name": "lastDeployedAt",
-						"type": "date",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": "",
-							"max": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "ghtlkn5j",
-						"name": "lastDeployment",
-						"type": "relation",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"collectionId": "0a1o4e6sstp694f",
-							"cascadeDelete": false,
-							"minSelect": null,
-							"maxSelect": 1,
-							"displayFields": null
-						}
-					}
-				],
-				"indexes": [
-					"CREATE UNIQUE INDEX ` + "`" + `idx_4ABO6EQ` + "`" + ` ON ` + "`" + `domains` + "`" + ` (` + "`" + `domain` + "`" + `)"
-				],
-				"listRule": null,
-				"viewRule": null,
-				"createRule": null,
-				"updateRule": null,
-				"deleteRule": null,
-				"options": {}
-			},
-			{
-				"id": "4yzbv8urny5ja1e",
-				"created": "2024-07-29 10:04:39.685Z",
-				"updated": "2024-08-22 08:00:20.090Z",
-				"name": "access",
-				"type": "base",
-				"system": false,
-				"schema": [
-					{
-						"system": false,
-						"id": "geeur58v",
-						"name": "name",
-						"type": "text",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": null,
-							"max": null,
-							"pattern": ""
-						}
-					},
-					{
-						"system": false,
-						"id": "iql7jpwx",
-						"name": "config",
-						"type": "json",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"maxSize": 2000000
-						}
-					},
-					{
-						"system": false,
-						"id": "hwy7m03o",
-						"name": "configType",
-						"type": "select",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"maxSelect": 1,
-							"values": [
-								"aliyun",
-								"tencent",
-								"ssh"
-							]
-						}
-					},
-					{
-						"system": false,
-						"id": "lr33hiwg",
-						"name": "deleted",
-						"type": "date",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": "",
-							"max": ""
-						}
-					}
-				],
-				"indexes": [
-					"CREATE UNIQUE INDEX ` + "`" + `idx_wkoST0j` + "`" + ` ON ` + "`" + `access` + "`" + ` (` + "`" + `name` + "`" + `)"
-				],
-				"listRule": null,
-				"viewRule": null,
-				"createRule": null,
-				"updateRule": null,
-				"deleteRule": null,
-				"options": {}
-			},
-			{
-				"id": "0a1o4e6sstp694f",
-				"created": "2024-07-30 06:30:27.801Z",
-				"updated": "2024-08-21 04:13:40.056Z",
-				"name": "deployments",
-				"type": "base",
-				"system": false,
-				"schema": [
-					{
-						"system": false,
-						"id": "farvlzk7",
-						"name": "domain",
-						"type": "relation",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"collectionId": "z3p974ainxjqlvs",
-							"cascadeDelete": false,
-							"minSelect": null,
-							"maxSelect": 1,
-							"displayFields": null
-						}
-					},
-					{
-						"system": false,
-						"id": "jx5f69i3",
-						"name": "log",
-						"type": "json",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"maxSize": 2000000
-						}
-					},
-					{
-						"system": false,
-						"id": "qbxdtg9q",
-						"name": "phase",
-						"type": "select",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"maxSelect": 1,
-							"values": [
-								"check",
-								"apply",
-								"deploy"
-							]
-						}
-					},
-					{
-						"system": false,
-						"id": "rglrp1hz",
-						"name": "phaseSuccess",
-						"type": "bool",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {}
-					},
-					{
-						"system": false,
-						"id": "lt1g1blu",
-						"name": "deployedAt",
-						"type": "date",
-						"required": false,
-						"presentable": false,
-						"unique": false,
-						"options": {
-							"min": "",
-							"max": ""
-						}
-					}
-				],
-				"indexes": [],
-				"listRule": null,
-				"viewRule": null,
-				"createRule": null,
-				"updateRule": null,
-				"deleteRule": null,
-				"options": {}
-			}
-		]`
-
-		collections := []*models.Collection{}
-		if err := json.Unmarshal([]byte(jsonData), &collections); err != nil {
-			return err
-		}
-
-		return daos.New(db).ImportCollections(collections, true, nil)
-	}, func(db dbx.Builder) error {
-		return nil
-	})
-}
diff --git a/migrations/1724942756_collections_snapshot.go b/migrations/1724943694_collections_snapshot.go
similarity index 100%
rename from migrations/1724942756_collections_snapshot.go
rename to migrations/1724943694_collections_snapshot.go