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, 41 deletions

diff --git a/vendor/security-framework-sys/src/lib.rs b/vendor/security-framework-sys/src/lib.rs
deleted file mode 100644
index f4be4d75..00000000
--- a/vendor/security-framework-sys/src/lib.rs
+++ /dev/null
@@ -1,41 +0,0 @@
-#![allow(bad_style)]
-
-#[cfg_attr(
-    any(target_os = "macos", target_os = "ios", target_os = "tvos", target_os = "watchos", target_os = "visionos"),
-    link(name = "Security", kind = "framework")
-)]
-extern "C" {}
-
-#[cfg(target_os = "macos")]
-pub mod access;
-pub mod access_control;
-#[cfg(target_os = "macos")]
-pub mod authorization;
-pub mod base;
-#[cfg(any(target_os = "macos", target_os = "ios", target_os = "tvos", target_os = "watchos", target_os = "visionos"))]
-pub mod certificate;
-#[cfg(target_os = "macos")]
-pub mod certificate_oids;
-pub mod cipher_suite;
-#[cfg(target_os = "macos")]
-pub mod cms;
-#[cfg(target_os = "macos")]
-pub mod code_signing;
-#[cfg(target_os = "macos")]
-pub mod digest_transform;
-#[cfg(target_os = "macos")]
-pub mod encrypt_transform;
-pub mod identity;
-pub mod import_export;
-pub mod item;
-pub mod key;
-pub mod keychain;
-pub mod keychain_item;
-pub mod policy;
-pub mod random;
-pub mod secure_transport;
-#[cfg(target_os = "macos")]
-pub mod transform;
-pub mod trust;
-#[cfg(target_os = "macos")]
-pub mod trust_settings;