feat(auth+db): 实现注册登录核心逻辑，以及自动建表，用户信息落库

backend/go.mod

@@ -5,6 +5,9 @@ go 1.26.3
 require (
 	github.com/cloudwego/eino v0.8.13
 	github.com/gin-gonic/gin v1.12.0
+	golang.org/x/crypto v0.48.0
+	gorm.io/driver/sqlite v1.6.0
+	gorm.io/gorm v1.31.1
 )
 
 require (
@@ -23,13 +26,17 @@ require (
 	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-jwt/jwt/v5 v5.3.1 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/goph/emperror v0.17.2 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-sqlite3 v1.14.22 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/nikolalohinski/gonja v1.5.3 // indirect
@@ -45,7 +52,6 @@ require (
 	github.com/yargevad/filepathx v1.0.0 // 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/exp v0.0.0-20230713183714-613f0c0eb8a1 // indirect
 	golang.org/x/net v0.51.0 // indirect
 	golang.org/x/sys v0.41.0 // indirect