Remove 买点 (user acquisition tracking) subsystem

Delete the dataReport SDK, event storage model, and scheduled uploader,
along with the reportser/srv_report wrapper services and all ~20 Report*
call sites in business code. Also drop the ReportSDKConfig field from
the APP config response, the TrackerAppId helper, and the related
dataReport yaml config block.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/docs/docs.go

@@ -4355,10 +4355,6 @@ const docTemplate = `{
                     "description": "qq群",
                     "type": "string"
                 },
-                "reportSdkConfig": {
-                    "description": "数据上报SDK域名配置",
-                    "type": "string"
-                },
                 "telegram": {
                     "description": "商务tg",
                     "type": "string"
@@ -4457,10 +4453,6 @@ const docTemplate = `{
                         }
                     ]
                 },
-                "reportSdkConfig": {
-                    "description": "数据上报SDK域名配置",
-                    "type": "string"
-                },
                 "seoInfo": {
                     "description": "全站SEO信息",
                     "allOf": [