refactor(bf-bot): 插件重构为 handlers/services/utils 分层，资源归入 res/

- 旧平铺模块（data/data_utils/database_op/image_builder*/get_bf6_data/
  gametools_bf6/bf6_data/img_utils）拆分为 handlers（绑定/查询）、
  services（fetchers/processing/query）、utils（渲染/参数）分层；
  新增 repository.py / config.py / paths.py
- 字体/图片/模板资源迁入 res/，新增 BF2042 卡面素材（bg/object_icon 等）
- browser_ext/：BF2042 扩展捕获桥（WS 直连兜底通道）源码入库
- 新增 hexi/web/src/plugins/bf_bot 前端管理页
- 新增 tests：test_bf_bot_helpers / repository / tracker_api

Co-Authored-By: Claude Code <noreply@anthropic.com>

hexi/plugins/nonebot_plugin_bf_bot/browser_ext/manifest.json

@@ -0,0 +1,31 @@
+{
+  "manifest_version": 3,
+  "name": "HeXi BF2042 捕获桥",
+  "version": "0.1.0",
+  "description": "被动捕获 tracker.gg 的 BF2042 响应并经 WebSocket 转发给本机禾汐 bot。浏览器无需开调试端口。",
+  "minimum_chrome_version": "116",
+  "permissions": ["tabs", "scripting", "alarms"],
+  "host_permissions": [
+    "https://tracker.gg/*",
+    "https://*.tracker.gg/*",
+    "http://127.0.0.1/*"
+  ],
+  "background": {
+    "service_worker": "background.js"
+  },
+  "content_scripts": [
+    {
+      "matches": ["https://tracker.gg/*", "https://*.tracker.gg/*"],
+      "js": ["inject.js"],
+      "run_at": "document_start",
+      "world": "MAIN",
+      "all_frames": true
+    },
+    {
+      "matches": ["https://tracker.gg/*", "https://*.tracker.gg/*"],
+      "js": ["content.js"],
+      "run_at": "document_start",
+      "all_frames": true
+    }
+  ]
+}