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, 63 deletions

diff --git a/vendor/windows-core/src/out_param.rs b/vendor/windows-core/src/out_param.rs
deleted file mode 100644
index 828746c1..00000000
--- a/vendor/windows-core/src/out_param.rs
+++ /dev/null
@@ -1,63 +0,0 @@
-use super::*;
-use core::mem::{take, transmute_copy, zeroed};
-
-/// Provides automatic parameter conversion in cases where the Windows API expects implicit conversion support.
-///
-/// This is a mutable version of [Param] meant to support out parameters.
-/// There is no need to implement this trait. Blanket implementations are provided for all applicable Windows types.
-pub trait OutParam<T: TypeKind, C = <T as TypeKind>::TypeKind>: Sized
-where
-    T: Type<T>,
-{
-    #[doc(hidden)]
-    unsafe fn borrow_mut(&self) -> OutRef<'_, T>;
-}
-
-impl<T> OutParam<T, CloneType> for &mut T
-where
-    T: TypeKind<TypeKind = CloneType> + Clone + Default,
-{
-    unsafe fn borrow_mut(&self) -> OutRef<'_, T> {
-        unsafe {
-            let this: &mut T = transmute_copy(self);
-            take(this);
-            transmute_copy(self)
-        }
-    }
-}
-
-impl<T> OutParam<T, CopyType> for &mut T
-where
-    T: TypeKind<TypeKind = CopyType> + Clone + Default,
-{
-    unsafe fn borrow_mut(&self) -> OutRef<'_, T> {
-        unsafe { transmute_copy(self) }
-    }
-}
-
-impl<T> OutParam<T, InterfaceType> for &mut Option<T>
-where
-    T: TypeKind<TypeKind = InterfaceType> + Clone,
-{
-    unsafe fn borrow_mut(&self) -> OutRef<'_, T> {
-        unsafe {
-            let this: &mut Option<T> = transmute_copy(self);
-            take(this);
-            transmute_copy(self)
-        }
-    }
-}
-
-impl<T> OutParam<T> for Option<&mut T>
-where
-    T: Type<T>,
-{
-    unsafe fn borrow_mut(&self) -> OutRef<'_, T> {
-        unsafe {
-            match self {
-                Some(this) => transmute_copy(this),
-                None => zeroed(),
-            }
-        }
-    }
-}