Steven 3d893a7394 fix(backend): implement protocol-agnostic header setting for dual gRPC/Connect-RPC support ... Problem: The codebase supports both native gRPC and Connect-RPC protocols, but auth service was using grpc.SetHeader() which only works for native gRPC. This caused "failed to set grpc header" errors when using Connect-RPC clients (browsers using nice-grpc-web). Solution: - Created HeaderCarrier pattern for protocol-agnostic header setting - HeaderCarrier stores headers in context for Connect-RPC requests - Falls back to grpc.SetHeader for native gRPC requests - Updated auth service to use SetResponseHeader() instead of grpc.SetHeader() - Refactored Connect wrappers to use withHeaderCarrier() helper to eliminate code duplication Additional fixes: - Allow public methods when gRPC metadata is missing in ACL interceptor - Properly handle ParseSessionCookieValue errors instead of ignoring them - Fix buildSessionCookie to gracefully handle missing metadata Files changed: - server/router/api/v1/header_carrier.go: New protocol-agnostic header carrier - server/router/api/v1/auth_service.go: Use SetResponseHeader, handle missing metadata - server/router/api/v1/connect_services.go: Use withHeaderCarrier helper - server/router/api/v1/acl.go: Allow public methods without metadata - server/router/api/v1/connect_interceptors.go: Handle ParseSessionCookieValue errors 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>		2025-12-12 07:46:28 +08:00
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v1	fix(backend): implement protocol-agnostic header setting for dual gRPC/Connect-RPC support	2025-12-12 07:46:28 +08:00