feat(api): 统一公开接口为 /api/v1 前缀

将通用生成、Gemini、可灵、火山、健康检查与 OpenAPI 的推荐入口统一到 /api/v1，并保留历史路径作为兼容别名。同步更新代理配置、接入文档、接口清单和前缀回归测试。\n\n验证：go vet ./...；go test ./...；pnpm openapi；pnpm lint；pnpm test；pnpm build；公开 OpenAPI 71 个方法与接口清单机器比对一致。

apps/api/internal/httpapi/voice_clone_handlers.go

@@ -16,8 +16,6 @@ import (
 // @Failure 401 {object} ErrorEnvelope
 // @Failure 500 {object} ErrorEnvelope
 // @Router /api/v1/voice_clone/voices [get]
-// @Router /v1/voice_clone/voices [get]
-// @Router /voice_clone/voices [get]
 func (s *Server) listClonedVoices(w http.ResponseWriter, r *http.Request) {
 	user, ok := auth.UserFromContext(r.Context())
 	if !ok {
@@ -51,8 +49,6 @@ func (s *Server) listClonedVoices(w http.ResponseWriter, r *http.Request) {
 // @Failure 404 {object} ErrorEnvelope
 // @Failure 502 {object} ErrorEnvelope
 // @Router /api/v1/voice_clone/voices/{voiceID} [delete]
-// @Router /v1/voice_clone/voices/{voiceID} [delete]
-// @Router /voice_clone/voices/{voiceID} [delete]
 func (s *Server) deleteClonedVoice(w http.ResponseWriter, r *http.Request) {
 	user, ok := auth.UserFromContext(r.Context())
 	if !ok {