diff --git a/backend/pb_migrations/1776500001_created_polls.js b/backend/pb_migrations/1776500001_created_polls.js
deleted file mode 100644
index 5209fea..0000000
--- a/backend/pb_migrations/1776500001_created_polls.js
+++ /dev/null
@@ -1,151 +0,0 @@
-/// <reference path="../pb_data/types.d.ts" />
-migrate((db) => {
-  const collection = new Collection({
-    "id": "polls_collection",
-    "created": "2026-04-18 00:00:01.000Z",
-    "updated": "2026-04-18 00:00:01.000Z",
-    "name": "polls",
-    "type": "base",
-    "system": false,
-    "schema": [
-      {
-        "system": false,
-        "id": "sf_group",
-        "name": "group",
-        "type": "relation",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "collectionId": "es63bkyiblpnxdf",
-          "cascadeDelete": false,
-          "minSelect": null,
-          "maxSelect": 1,
-          "displayFields": null
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_creator",
-        "name": "creator",
-        "type": "relation",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "collectionId": "_pb_users_auth_",
-          "cascadeDelete": true,
-          "minSelect": null,
-          "maxSelect": 1,
-          "displayFields": null
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_title",
-        "name": "title",
-        "type": "text",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": null,
-          "max": 200,
-          "pattern": ""
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_type",
-        "name": "type",
-        "type": "select",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "minSelect": null,
-          "maxSelect": 1,
-          "values": ["option", "rollcall"]
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_anonymous",
-        "name": "anonymous",
-        "type": "bool",
-        "required": false,
-        "presentable": false,
-        "unique": false,
-        "options": {}
-      },
-      {
-        "system": false,
-        "id": "sf_deadline",
-        "name": "deadline",
-        "type": "date",
-        "required": false,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": "",
-          "max": ""
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_maxp",
-        "name": "maxParticipants",
-        "type": "number",
-        "required": false,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": 1,
-          "max": null,
-          "noDecimal": true
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_status",
-        "name": "status",
-        "type": "select",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "minSelect": null,
-          "maxSelect": 1,
-          "values": ["active", "settled"]
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_settled",
-        "name": "settledAt",
-        "type": "date",
-        "required": false,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": "",
-          "max": ""
-        }
-      }
-    ],
-    "indexes": [],
-    "listRule": "@request.auth.id != \"\" && group.members ~ @request.auth.id",
-    "viewRule": "@request.auth.id != \"\" && group.members ~ @request.auth.id",
-    "createRule": "@request.auth.id != \"\" && group.members ~ @request.auth.id",
-    "updateRule": "creator = @request.auth.id",
-    "deleteRule": "creator = @request.auth.id || group.owner = @request.auth.id",
-    "options": {}
-  });
-
-  return Dao(db).saveCollection(collection);
-}, (db) => {
-  const dao = new Dao(db);
-  const collection = dao.findCollectionByNameOrId("polls_collection");
-
-  return dao.deleteCollection(collection);
-})
diff --git a/backend/pb_migrations/1776500002_created_poll_options.js b/backend/pb_migrations/1776500002_created_poll_options.js
deleted file mode 100644
index cc1c0a9..0000000
--- a/backend/pb_migrations/1776500002_created_poll_options.js
+++ /dev/null
@@ -1,71 +0,0 @@
-/// <reference path="../pb_data/types.d.ts" />
-migrate((db) => {
-  const collection = new Collection({
-    "id": "poll_options_collection",
-    "created": "2026-04-18 00:00:02.000Z",
-    "updated": "2026-04-18 00:00:02.000Z",
-    "name": "poll_options",
-    "type": "base",
-    "system": false,
-    "schema": [
-      {
-        "system": false,
-        "id": "sf_poll",
-        "name": "poll",
-        "type": "relation",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "collectionId": "polls_collection",
-          "cascadeDelete": true,
-          "minSelect": null,
-          "maxSelect": 1,
-          "displayFields": null
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_content",
-        "name": "content",
-        "type": "text",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": null,
-          "max": 200,
-          "pattern": ""
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_order",
-        "name": "order",
-        "type": "number",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": 0,
-          "max": null,
-          "noDecimal": true
-        }
-      }
-    ],
-    "indexes": [],
-    "listRule": "@request.auth.id != \"\"",
-    "viewRule": "@request.auth.id != \"\"",
-    "createRule": "@request.auth.id != \"\"",
-    "updateRule": "poll.creator = @request.auth.id",
-    "deleteRule": "poll.creator = @request.auth.id",
-    "options": {}
-  });
-
-  return Dao(db).saveCollection(collection);
-}, (db) => {
-  const dao = new Dao(db);
-  const collection = dao.findCollectionByNameOrId("poll_options_collection");
-
-  return dao.deleteCollection(collection);
-})
diff --git a/backend/pb_migrations/1776500003_created_poll_votes.js b/backend/pb_migrations/1776500003_created_poll_votes.js
deleted file mode 100644
index ef47586..0000000
--- a/backend/pb_migrations/1776500003_created_poll_votes.js
+++ /dev/null
@@ -1,75 +0,0 @@
-/// <reference path="../pb_data/types.d.ts" />
-migrate((db) => {
-  const collection = new Collection({
-    "id": "poll_votes_collection",
-    "created": "2026-04-18 00:00:03.000Z",
-    "updated": "2026-04-18 00:00:03.000Z",
-    "name": "poll_votes",
-    "type": "base",
-    "system": false,
-    "schema": [
-      {
-        "system": false,
-        "id": "sf_poll",
-        "name": "poll",
-        "type": "relation",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "collectionId": "polls_collection",
-          "cascadeDelete": true,
-          "minSelect": null,
-          "maxSelect": 1,
-          "displayFields": null
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_option",
-        "name": "option",
-        "type": "relation",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "collectionId": "poll_options_collection",
-          "cascadeDelete": false,
-          "minSelect": null,
-          "maxSelect": 1,
-          "displayFields": null
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_user",
-        "name": "user",
-        "type": "relation",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "collectionId": "_pb_users_auth_",
-          "cascadeDelete": true,
-          "minSelect": null,
-          "maxSelect": 1,
-          "displayFields": null
-        }
-      }
-    ],
-    "indexes": ["CREATE UNIQUE INDEX idx_poll_user ON poll_votes (poll, user)"],
-    "listRule": "@request.auth.id != \"\"",
-    "viewRule": "@request.auth.id != \"\"",
-    "createRule": "@request.auth.id != \"\" && user = @request.auth.id && poll.group.members ~ @request.auth.id",
-    "updateRule": "user = @request.auth.id",
-    "deleteRule": "user = @request.auth.id",
-    "options": {}
-  });
-
-  return Dao(db).saveCollection(collection);
-}, (db) => {
-  const dao = new Dao(db);
-  const collection = dao.findCollectionByNameOrId("poll_votes_collection");
-
-  return dao.deleteCollection(collection);
-})
diff --git a/backend/pb_migrations/1776500004_created_memories.js b/backend/pb_migrations/1776500004_created_memories.js
deleted file mode 100644
index 3c32029..0000000
--- a/backend/pb_migrations/1776500004_created_memories.js
+++ /dev/null
@@ -1,128 +0,0 @@
-/// <reference path="../pb_data/types.d.ts" />
-migrate((db) => {
-  const collection = new Collection({
-    "id": "memories_collection",
-    "created": "2026-04-18 10:00:04.000Z",
-    "updated": "2026-04-18 10:00:04.000Z",
-    "name": "memories",
-    "type": "base",
-    "system": false,
-    "schema": [
-      {
-        "system": false,
-        "id": "sf_group",
-        "name": "group",
-        "type": "relation",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "collectionId": "es63bkyiblpnxdf",
-          "cascadeDelete": true,
-          "minSelect": null,
-          "maxSelect": 1,
-          "displayFields": null
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_uploader",
-        "name": "uploader",
-        "type": "relation",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "collectionId": "_pb_users_auth_",
-          "cascadeDelete": true,
-          "minSelect": null,
-          "maxSelect": 1,
-          "displayFields": null
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_title",
-        "name": "title",
-        "type": "text",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": null,
-          "max": 200,
-          "pattern": ""
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_desc",
-        "name": "description",
-        "type": "text",
-        "required": false,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": null,
-          "max": null,
-          "pattern": ""
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_file",
-        "name": "file",
-        "type": "file",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "maxSelect": 1,
-          "maxSize": 524288000,
-          "mimeTypes": ["image/*", "video/*", "audio/*", "application/pdf", "application/msword", "application/vnd.*", "text/*", "application/zip", "application/x-rar-compressed"]
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_ft",
-        "name": "fileType",
-        "type": "select",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "maxSelect": 1,
-          "values": ["image", "video", "audio", "document", "other"]
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_size",
-        "name": "size",
-        "type": "number",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": 0,
-          "max": null,
-          "noDecimal": false
-        }
-      }
-    ],
-    "indexes": [],
-    "listRule": "@request.auth.id != \"\" && group.members ~ @request.auth.id",
-    "viewRule": "@request.auth.id != \"\" && group.members ~ @request.auth.id",
-    "createRule": "@request.auth.id != \"\" && group.members ~ @request.auth.id",
-    "updateRule": "uploader = @request.auth.id",
-    "deleteRule": "uploader = @request.auth.id || group.owner = @request.auth.id",
-    "options": {}
-  });
-
-  return Dao(db).saveCollection(collection);
-}, (db) => {
-  const dao = new Dao(db);
-  const collection = dao.findCollectionByNameOrId("memories_collection");
-
-  return dao.deleteCollection(collection);
-})
diff --git a/backend/pb_migrations/1776500005_created_notifications.js b/backend/pb_migrations/1776500005_created_notifications.js
deleted file mode 100644
index 7d8bf6c..0000000
--- a/backend/pb_migrations/1776500005_created_notifications.js
+++ /dev/null
@@ -1,121 +0,0 @@
-/// <reference path="../pb_data/types.d.ts" />
-migrate((db) => {
-  const collection = new Collection({
-    "id": "notifications_collection",
-    "created": "2026-04-18 10:00:05.000Z",
-    "updated": "2026-04-18 10:00:05.000Z",
-    "name": "notifications",
-    "type": "base",
-    "system": false,
-    "schema": [
-      {
-        "system": false,
-        "id": "sf_user",
-        "name": "user",
-        "type": "relation",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "collectionId": "_pb_users_auth_",
-          "cascadeDelete": true,
-          "minSelect": null,
-          "maxSelect": 1,
-          "displayFields": null
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_type",
-        "name": "type",
-        "type": "select",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "maxSelect": 1,
-          "values": ["poll_new", "poll_deadline", "poll_result", "team_invite", "team_starting", "join_request", "member_joined"]
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_title",
-        "name": "title",
-        "type": "text",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": null,
-          "max": 200,
-          "pattern": ""
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_content",
-        "name": "content",
-        "type": "text",
-        "required": false,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": null,
-          "max": null,
-          "pattern": ""
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_read",
-        "name": "read",
-        "type": "bool",
-        "required": false,
-        "presentable": false,
-        "unique": false,
-        "options": {}
-      },
-      {
-        "system": false,
-        "id": "sf_rid",
-        "name": "relatedId",
-        "type": "text",
-        "required": false,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": null,
-          "max": null,
-          "pattern": ""
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_rtype",
-        "name": "relatedType",
-        "type": "select",
-        "required": false,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "maxSelect": 1,
-          "values": ["poll", "team", "group"]
-        }
-      }
-    ],
-    "indexes": [],
-    "listRule": "user = @request.auth.id",
-    "viewRule": "user = @request.auth.id",
-    "createRule": "@request.auth.id != \"\"",
-    "updateRule": "user = @request.auth.id",
-    "deleteRule": "user = @request.auth.id",
-    "options": {}
-  });
-
-  return Dao(db).saveCollection(collection);
-}, (db) => {
-  const dao = new Dao(db);
-  const collection = dao.findCollectionByNameOrId("notifications_collection");
-
-  return dao.deleteCollection(collection);
-})
diff --git a/backend/pb_migrations/1776500006_created_point_logs.js b/backend/pb_migrations/1776500006_created_point_logs.js
deleted file mode 100644
index d1b1348..0000000
--- a/backend/pb_migrations/1776500006_created_point_logs.js
+++ /dev/null
@@ -1,84 +0,0 @@
-/// <reference path="../pb_data/types.d.ts" />
-migrate((db) => {
-  const collection = new Collection({
-    "id": "point_logs_collection",
-    "created": "2026-04-18 10:00:06.000Z",
-    "updated": "2026-04-18 10:00:06.000Z",
-    "name": "point_logs",
-    "type": "base",
-    "system": false,
-    "schema": [
-      {
-        "system": false,
-        "id": "sf_user",
-        "name": "user",
-        "type": "relation",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "collectionId": "_pb_users_auth_",
-          "cascadeDelete": true,
-          "minSelect": null,
-          "maxSelect": 1,
-          "displayFields": null
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_action",
-        "name": "action",
-        "type": "select",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "maxSelect": 1,
-          "values": ["vote", "team", "memory"]
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_points",
-        "name": "points",
-        "type": "number",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": 1,
-          "max": null,
-          "noDecimal": false
-        }
-      },
-      {
-        "system": false,
-        "id": "sf_rid",
-        "name": "relatedId",
-        "type": "text",
-        "required": true,
-        "presentable": false,
-        "unique": false,
-        "options": {
-          "min": null,
-          "max": null,
-          "pattern": ""
-        }
-      }
-    ],
-    "indexes": [],
-    "listRule": "user = @request.auth.id",
-    "viewRule": "user = @request.auth.id",
-    "createRule": "@request.auth.id != \"\" && user = @request.auth.id",
-    "updateRule": null,
-    "deleteRule": null,
-    "options": {}
-  });
-
-  return Dao(db).saveCollection(collection);
-}, (db) => {
-  const dao = new Dao(db);
-  const collection = dao.findCollectionByNameOrId("point_logs_collection");
-
-  return dao.deleteCollection(collection);
-})
diff --git a/frontend/nginx.conf b/frontend/nginx.conf
index 912c294..a5bc3fc 100644
--- a/frontend/nginx.conf
+++ b/frontend/nginx.conf
@@ -17,7 +17,7 @@ server {
 
     # SSE realtime 连接（必须在 /api/ 之前）
     location /api/realtime {
-        proxy_pass http://192.168.1.14:8090;
+        proxy_pass http://gamegroup-pb:8090;
         proxy_http_version 1.1;
         proxy_set_header Connection '';
         proxy_set_header Host $host;
@@ -33,7 +33,7 @@ server {
     # API 代理到局域网 PocketBase
     location /api/ {
         client_max_body_size 500m;
-        proxy_pass http://192.168.1.14:8090;
+        proxy_pass http://gamegroup-pb:8090;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection 'upgrade';