feat: 增加 Web 管理界面，扫描整理改为页面点击触发

- main.go 改为 Web 服务入口（Gin + 内嵌前端 dist + 自动打开浏览器）
- internal/service: 新增扫描整理后台任务，支持状态机与实时日志捕获
- internal/api: 新增统一响应、媒体列表/统计、扫描开始/状态接口
- internal/store: 追加 ListMedia/CountMedia/Stats 查询，MediaInfo 补 JSON tag
- internal/config: application.properties 配置加载（端口/数据库/自动开浏览器）
- frontend: Vue2 + ElementUI + Vite 工程，含扫描整理/统计看板/媒体库三页
- build.sh 整合前端构建，输出单一 kenaito-media-picker.exe

go.mod

@@ -3,8 +3,11 @@ module kenaito-media-picker
 go 1.25.0
 
 require (
-	github.com/gabriel-vasile/mimetype v1.4.3
+	github.com/dustin/go-humanize v1.0.1
+	github.com/gabriel-vasile/mimetype v1.4.12
+	github.com/gin-gonic/gin v1.12.0
 	github.com/glebarez/go-sqlite v1.20.3
+	github.com/magiconair/properties v1.8.10
 	github.com/redmask-hb/GoSimplePrint v0.0.0-20210302075413-3a3af92bcb7d
 	github.com/satori/go.uuid v1.2.0
 	golang.org/x/image v0.16.0
@@ -12,18 +15,38 @@ require (
 )
 
 require (
-	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/goccy/go-json v0.8.1 // indirect
+	github.com/bytedance/gopkg v0.1.3 // indirect
+	github.com/bytedance/sonic v1.15.0 // indirect
+	github.com/bytedance/sonic/loader v0.5.0 // indirect
+	github.com/cloudwego/base64x v0.1.6 // indirect
+	github.com/gin-contrib/sse v1.1.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.30.1 // indirect
+	github.com/goccy/go-json v0.10.5 // indirect
+	github.com/goccy/go-yaml v1.19.2 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/mattn/go-isatty v0.0.17 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
+	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/quic-go/qpack v0.6.0 // indirect
+	github.com/quic-go/quic-go v0.59.0 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230126093431-47fa9a501578 // indirect
 	github.com/syndtr/goleveldb v1.0.0 // indirect
-	golang.org/x/net v0.17.0 // indirect
-	golang.org/x/sys v0.13.0 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.3.1 // indirect
+	go.mongodb.org/mongo-driver/v2 v2.5.0 // indirect
+	golang.org/x/arch v0.22.0 // indirect
+	golang.org/x/crypto v0.48.0 // indirect
+	golang.org/x/net v0.51.0 // indirect
+	golang.org/x/sys v0.41.0 // indirect
+	golang.org/x/text v0.34.0 // indirect
+	google.golang.org/protobuf v1.36.10 // indirect
 	modernc.org/libc v1.22.2 // indirect
 	modernc.org/mathutil v1.5.0 // indirect
 	modernc.org/memory v1.5.0 // indirect