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, 39 deletions

diff --git a/vendor/windows-core/src/agile_reference.rs b/vendor/windows-core/src/agile_reference.rs
deleted file mode 100644
index 30554e97..00000000
--- a/vendor/windows-core/src/agile_reference.rs
+++ /dev/null
@@ -1,39 +0,0 @@
-use super::*;
-use core::marker::PhantomData;
-
-/// A type representing an agile reference to a COM/WinRT object.
-#[repr(transparent)]
-#[derive(Clone, PartialEq, Eq)]
-pub struct AgileReference<T>(imp::IAgileReference, PhantomData<T>);
-
-impl<T: Interface> AgileReference<T> {
-    /// Creates an agile reference to the object.
-    pub fn new(object: &T) -> Result<Self> {
-        // TODO: this assert is required until we can catch this at compile time using an "associated const equality" constraint.
-        // For example, <T: Interface<UNKNOWN = true>>
-        // https://github.com/rust-lang/rust/issues/92827
-        assert!(T::UNKNOWN);
-        unsafe {
-            imp::RoGetAgileReference(
-                imp::AGILEREFERENCE_DEFAULT,
-                &T::IID,
-                core::mem::transmute::<&T, &IUnknown>(object),
-            )
-            .map(|reference| Self(reference, Default::default()))
-        }
-    }
-
-    /// Retrieves a proxy to the target of the `AgileReference` object that may safely be used within any thread context in which get is called.
-    pub fn resolve(&self) -> Result<T> {
-        unsafe { self.0.Resolve() }
-    }
-}
-
-unsafe impl<T: Interface> Send for AgileReference<T> {}
-unsafe impl<T: Interface> Sync for AgileReference<T> {}
-
-impl<T> core::fmt::Debug for AgileReference<T> {
-    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
-        write!(f, "AgileReference({:?})", &self.0)
-    }
-}