feat: migrate from Cedar to SpiceDB authorization system

This is a major architectural change that replaces the Cedar policy-based
authorization system with SpiceDB's relation-based authorization.

Key changes:

- Migrate from Rust to Go implementation
- Replace Cedar policies with SpiceDB schema and relationships
- Switch from envoy `ext_authz` with Cedar to SpiceDB permission checks
- Update build system and dependencies for Go ecosystem
- Maintain Envoy integration for external authorization

This change enables more flexible permission modeling through SpiceDB's
Google Zanzibar inspired relation-based system, supporting complex
hierarchical permissions that were difficult to express in Cedar.

Breaking change: Existing Cedar policies and Rust-based configuration
will no longer work and need to be migrated to SpiceDB schema.

1 files changed, 0 insertions, 35 deletions

diff --git a/vendor/rustix/src/net/mod.rs b/vendor/rustix/src/net/mod.rs
deleted file mode 100644
index e5560905..00000000
--- a/vendor/rustix/src/net/mod.rs
+++ /dev/null
@@ -1,35 +0,0 @@
-//! Network-related operations.
-//!
-//! On Windows, one must call [`wsa_startup`] in the process before calling any
-//! of these APIs. [`wsa_cleanup`] may be used in the process if these APIs are
-//! no longer needed.
-//!
-//! [`wsa_startup`]: https://docs.rs/rustix/*/x86_64-pc-windows-msvc/rustix/net/fn.wsa_startup.html
-//! [`wsa_cleanup`]: https://docs.rs/rustix/*/x86_64-pc-windows-msvc/rustix/net/fn.wsa_cleanup.html
-
-pub mod addr;
-mod send_recv;
-mod socket;
-mod socket_addr_any;
-#[cfg(not(any(windows, target_os = "wasi")))]
-mod socketpair;
-mod types;
-#[cfg(windows)]
-mod wsa;
-
-#[cfg(linux_kernel)]
-pub mod netdevice;
-pub mod sockopt;
-
-pub use crate::maybe_polyfill::net::{
-    IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6,
-};
-pub use send_recv::*;
-pub use socket::*;
-pub use socket_addr_any::SocketAddrAny;
-pub(crate) use socket_addr_any::SocketAddrBuf;
-#[cfg(not(any(windows, target_os = "wasi")))]
-pub use socketpair::socketpair;
-pub use types::*;
-#[cfg(windows)]
-pub use wsa::{wsa_cleanup, wsa_startup};