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, 62 deletions

diff --git a/vendor/generic-array/README.md b/vendor/generic-array/README.md
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-[![Crates.io](https://img.shields.io/crates/v/generic-array.svg)](https://crates.io/crates/generic-array)

-[![Build Status](https://travis-ci.org/fizyk20/generic-array.svg?branch=master)](https://travis-ci.org/fizyk20/generic-array)

-# generic-array

-

-This crate implements generic array types for Rust.

-

-**Requires minumum Rust version of 1.36.0, or 1.41.0 for `From<[T; N]>` implementations**

-

-[Documentation](http://fizyk20.github.io/generic-array/generic_array/)

-

-## Usage

-

-The Rust arrays `[T; N]` are problematic in that they can't be used generically with respect to `N`, so for example this won't work:

-

-```rust

-struct Foo<N> {

-	data: [i32; N]

-}

-```

-

-**generic-array** defines a new trait `ArrayLength<T>` and a struct `GenericArray<T, N: ArrayLength<T>>`, which let the above be implemented as:

-

-```rust

-struct Foo<N: ArrayLength<i32>> {

-	data: GenericArray<i32, N>

-}

-```

-

-The `ArrayLength<T>` trait is implemented by default for [unsigned integer types](http://fizyk20.github.io/generic-array/typenum/uint/index.html) from [typenum](http://fizyk20.github.io/generic-array/typenum/index.html) crate:

-

-```rust

-use generic_array::typenum::U5;

-

-struct Foo<N: ArrayLength<i32>> {

-    data: GenericArray<i32, N>

-}

-

-fn main() {

-    let foo = Foo::<U5>{data: GenericArray::default()};

-}

-```

-

-For example, `GenericArray<T, U5>` would work almost like `[T; 5]`:

-

-```rust

-use generic_array::typenum::U5;

-

-struct Foo<T, N: ArrayLength<T>> {

-    data: GenericArray<T, N>

-}

-

-fn main() {

-    let foo = Foo::<i32, U5>{data: GenericArray::default()};

-}

-```

-

-In version 0.1.1 an `arr!` macro was introduced, allowing for creation of arrays as shown below:

-

-```rust

-let array = arr![u32; 1, 2, 3];

-assert_eq!(array[2], 3);

-```