feat(media): 对象存储 - 新增腾讯云 COS 与历史凭据兼容

Co-authored-by: MasterChiefCN <49179444+MasterChiefCN@users.noreply.github.com>
Co-authored-by: Codex <codex@openai.com>
Original-PR: https://github.com/ddcat-ai/open-ai-canvas/pull/218

backend/go.mod

@@ -5,6 +5,7 @@ go 1.25.0
 require (
 	github.com/gin-gonic/gin v1.12.0
 	github.com/redis/go-redis/v9 v9.21.0
+	github.com/tencentyun/cos-go-sdk-v5 v0.7.75
 	github.com/volcengine/volc-sdk-golang v1.0.253
 	golang.org/x/crypto v0.54.0
 	gorm.io/driver/postgres v1.6.2
@@ -18,6 +19,7 @@ require (
 	github.com/bytedance/sonic/loader v0.5.1 // indirect
 	github.com/cenkalti/backoff/v4 v4.1.2 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/clbanning/mxj v1.8.4 // indirect
 	github.com/cloudwego/base64x v0.1.7 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.13 // indirect
 	github.com/gin-contrib/sse v1.1.1 // indirect
@@ -26,6 +28,7 @@ require (
 	github.com/go-playground/validator/v10 v10.30.3 // indirect
 	github.com/goccy/go-json v0.10.6 // indirect
 	github.com/goccy/go-yaml v1.19.2 // indirect
+	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
@@ -38,8 +41,10 @@ require (
 	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/mattn/go-isatty v0.0.23 // indirect
 	github.com/mattn/go-sqlite3 v1.14.48 // indirect
+	github.com/mitchellh/mapstructure v1.4.3 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/mozillazg/go-httpheader v0.2.1 // indirect
 	github.com/pelletier/go-toml/v2 v2.4.3 // indirect
 	github.com/quic-go/qpack v0.6.0 // indirect
 	github.com/quic-go/quic-go v0.60.0 // indirect