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, 68 deletions

diff --git a/vendor/security-framework-sys/src/base.rs b/vendor/security-framework-sys/src/base.rs
deleted file mode 100644
index fafc57cc..00000000
--- a/vendor/security-framework-sys/src/base.rs
+++ /dev/null
@@ -1,68 +0,0 @@
-use core_foundation_sys::base::OSStatus;
-use core_foundation_sys::string::CFStringRef;
-use std::os::raw::c_void;
-
-pub enum OpaqueSecKeychainRef {}
-pub type SecKeychainRef = *mut OpaqueSecKeychainRef;
-
-pub enum OpaqueSecKeychainItemRef {}
-pub type SecKeychainItemRef = *mut OpaqueSecKeychainItemRef;
-
-// OSType from MacTypes.h
-pub type SecKeychainAttrType = u32;
-
-#[repr(C)]
-#[derive(Copy, Clone)]
-pub struct SecKeychainAttribute {
-    pub tag: SecKeychainAttrType,
-    pub length: u32,
-    pub data: *mut c_void,
-}
-
-#[repr(C)]
-#[derive(Copy, Clone)]
-pub struct SecKeychainAttributeList {
-    pub count: u32,
-    pub attr: *mut SecKeychainAttribute,
-}
-
-pub enum OpaqueSecCertificateRef {}
-pub type SecCertificateRef = *mut OpaqueSecCertificateRef;
-
-pub enum OpaqueSecAccessRef {}
-pub type SecAccessRef = *mut OpaqueSecAccessRef;
-
-pub enum OpaqueSecAccessControlRef {}
-pub type SecAccessControlRef = *mut OpaqueSecAccessControlRef;
-
-pub enum OpaqueSecKeyRef {}
-pub type SecKeyRef = *mut OpaqueSecKeyRef;
-
-pub enum OpaqueSecIdentityRef {}
-pub type SecIdentityRef = *mut OpaqueSecIdentityRef;
-
-pub enum OpaqueSecPolicyRef {}
-pub type SecPolicyRef = *mut OpaqueSecPolicyRef;
-
-pub const errSecSuccess: OSStatus = 0;
-pub const errSecUnimplemented: OSStatus = -4;
-pub const errSecIO: OSStatus = -36;
-pub const errSecParam: OSStatus = -50;
-pub const errSecBadReq: OSStatus = -909;
-pub const errSecNoTrustSettings: OSStatus = -25263;
-pub const errSecAuthFailed: OSStatus = -25293;
-pub const errSecDuplicateItem: OSStatus = -25299;
-pub const errSecItemNotFound: OSStatus = -25300;
-pub const errSecCreateChainFailed: OSStatus = -25318;
-pub const errSecConversionError: OSStatus = -67594;
-pub const errSecHostNameMismatch: OSStatus = -67602;
-pub const errSecInvalidExtendedKeyUsage: OSStatus = -67609;
-pub const errSecTrustSettingDeny: OSStatus = -67654;
-pub const errSecCertificateRevoked: OSStatus = -67820;
-pub const errSecNotTrusted: OSStatus = -67843;
-pub const errSecInternalComponent: OSStatus = -2070;
-
-extern "C" {
-    // this is available on iOS 11.3+, MacOS 10.3+
-    pub fn SecCopyErrorMessageString(status: OSStatus, reserved: *mut c_void) -> CFStringRef;
-}