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, 23 deletions

diff --git a/vendor/tinyvec/src/array/const_generic_impl.rs b/vendor/tinyvec/src/array/const_generic_impl.rs
deleted file mode 100644
index 0b145f16..00000000
--- a/vendor/tinyvec/src/array/const_generic_impl.rs
+++ /dev/null
@@ -1,23 +0,0 @@
-use super::Array;

-

-impl<T: Default, const N: usize> Array for [T; N] {

-  type Item = T;

-  const CAPACITY: usize = N;

-

-  #[inline(always)]

-  #[must_use]

-  fn as_slice(&self) -> &[T] {

-    &*self

-  }

-

-  #[inline(always)]

-  #[must_use]

-  fn as_slice_mut(&mut self) -> &mut [T] {

-    &mut *self

-  }

-

-  #[inline(always)]

-  fn default() -> Self {

-    [(); N].map(|_| Default::default())

-  }

-}