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, 29 deletions

diff --git a/vendor/winapi/src/shared/inaddr.rs b/vendor/winapi/src/shared/inaddr.rs
deleted file mode 100644
index 830dd050..00000000
--- a/vendor/winapi/src/shared/inaddr.rs
+++ /dev/null
@@ -1,29 +0,0 @@
-// Licensed under the Apache License, Version 2.0
-// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
-// All files in the project carrying such notice may not be copied, modified, or distributed
-// except according to those terms.
-//! IPv4 Internet address, 'on-wire' format structure.
-use shared::minwindef::{UCHAR, ULONG, USHORT};
-STRUCT!{struct in_addr_S_un_b {
-    s_b1: UCHAR,
-    s_b2: UCHAR,
-    s_b3: UCHAR,
-    s_b4: UCHAR,
-}}
-STRUCT!{struct in_addr_S_un_w {
-    s_w1: USHORT,
-    s_w2: USHORT,
-}}
-UNION!{union in_addr_S_un {
-    [u32; 1],
-    S_un_b S_un_b_mut: in_addr_S_un_b,
-    S_un_w S_un_w_mut: in_addr_S_un_w,
-    S_addr S_addr_mut: ULONG,
-}}
-STRUCT!{struct in_addr {
-    S_un: in_addr_S_un,
-}}
-pub type IN_ADDR = in_addr;
-pub type PIN_ADDR = *mut in_addr;
-pub type LPIN_ADDR = *mut in_addr;