feat: Web 版独立入口 + SQLite 持久化存储

- 拆分 main.go 为 main_cli.go 和 main_web.go，Web 版不再包含 CLI 参数解析
- Web 版直接启动 HTTP 服务，通过 -port/-lang 控制，无需 -web flag
- 结果存储从内存 map 替换为 SQLite（modernc.org/sqlite，纯 Go 零 CGO）
- 数据库文件 ~/.fscan/results.db，进程重启后结果不丢失
- 修复结果分布面板跟随 tab 筛选联动的问题

go.mod

@@ -1,6 +1,6 @@
 module github.com/shadow1ng/fscan
 
-go 1.20
+go 1.25.0
 
 require (
 	github.com/fatih/color v1.18.0
@@ -24,13 +24,14 @@ require (
 	go.ciq.dev/go-rsync v0.0.0-20240304021629-0a3bb196e6d1
 	golang.org/x/crypto v0.31.0
 	golang.org/x/net v0.32.0
-	golang.org/x/sys v0.28.0
+	golang.org/x/sys v0.42.0
 	golang.org/x/term v0.27.0
 	golang.org/x/text v0.21.0
 	google.golang.org/genproto v0.0.0-20221027153422-115e99e71e1c
 	google.golang.org/protobuf v1.28.1
 	gopkg.in/yaml.v2 v2.4.0
 	gopkg.in/yaml.v3 v3.0.1
+	modernc.org/sqlite v1.52.0
 )
 
 require (
@@ -38,6 +39,7 @@ require (
 	github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 // indirect
 	github.com/alexbrainman/sspi v0.0.0-20231016080023-1a75b4708caa // indirect
 	github.com/antlr/antlr4/runtime/Go/antlr v1.4.10 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/geoffgarside/ber v1.1.0 // indirect
 	github.com/go-asn1-ber/asn1-ber v1.5.7 // indirect
 	github.com/hashicorp/errwrap v1.0.0 // indirect
@@ -53,9 +55,14 @@ require (
 	github.com/kr/pretty v0.3.0 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ncruces/go-strftime v1.0.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/rogpeppe/go-internal v1.12.0 // indirect
 	github.com/stoewer/go-strcase v1.2.0 // indirect
-	golang.org/x/sync v0.11.0 // indirect
+	golang.org/x/sync v0.20.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+	modernc.org/libc v1.72.3 // indirect
+	modernc.org/mathutil v1.7.1 // indirect
+	modernc.org/memory v1.11.0 // indirect
 )