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, 91 deletions

diff --git a/vendor/ryu/tests/common_test.rs b/vendor/ryu/tests/common_test.rs
deleted file mode 100644
index e2bc4e1d..00000000
--- a/vendor/ryu/tests/common_test.rs
+++ /dev/null
@@ -1,91 +0,0 @@
-// Translated from C to Rust. The original C code can be found at
-// https://github.com/ulfjack/ryu and carries the following license:
-//
-// Copyright 2018 Ulf Adams
-//
-// The contents of this file may be used under the terms of the Apache License,
-// Version 2.0.
-//
-//    (See accompanying file LICENSE-Apache or copy at
-//     http://www.apache.org/licenses/LICENSE-2.0)
-//
-// Alternatively, the contents of this file may be used under the terms of
-// the Boost Software License, Version 1.0.
-//    (See accompanying file LICENSE-Boost or copy at
-//     https://www.boost.org/LICENSE_1_0.txt)
-//
-// Unless required by applicable law or agreed to in writing, this software
-// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-// KIND, either express or implied.
-
-#![allow(dead_code)]
-#![allow(
-    clippy::approx_constant,
-    clippy::cast_possible_wrap,
-    clippy::cast_sign_loss,
-    clippy::excessive_precision,
-    clippy::unreadable_literal,
-    clippy::wildcard_imports
-)]
-
-#[path = "../src/common.rs"]
-mod common;
-
-use common::{ceil_log2_pow5, decimal_length9, log10_pow2, log10_pow5};
-
-#[test]
-fn test_decimal_length9() {
-    assert_eq!(1, decimal_length9(0));
-    assert_eq!(1, decimal_length9(1));
-    assert_eq!(1, decimal_length9(9));
-    assert_eq!(2, decimal_length9(10));
-    assert_eq!(2, decimal_length9(99));
-    assert_eq!(3, decimal_length9(100));
-    assert_eq!(3, decimal_length9(999));
-    assert_eq!(9, decimal_length9(999999999));
-}
-
-#[test]
-fn test_ceil_log2_pow5() {
-    assert_eq!(1, ceil_log2_pow5(0));
-    assert_eq!(3, ceil_log2_pow5(1));
-    assert_eq!(5, ceil_log2_pow5(2));
-    assert_eq!(7, ceil_log2_pow5(3));
-    assert_eq!(10, ceil_log2_pow5(4));
-    assert_eq!(8192, ceil_log2_pow5(3528));
-}
-
-#[test]
-fn test_log10_pow2() {
-    assert_eq!(0, log10_pow2(0));
-    assert_eq!(0, log10_pow2(1));
-    assert_eq!(0, log10_pow2(2));
-    assert_eq!(0, log10_pow2(3));
-    assert_eq!(1, log10_pow2(4));
-    assert_eq!(496, log10_pow2(1650));
-}
-
-#[test]
-fn test_log10_pow5() {
-    assert_eq!(0, log10_pow5(0));
-    assert_eq!(0, log10_pow5(1));
-    assert_eq!(1, log10_pow5(2));
-    assert_eq!(2, log10_pow5(3));
-    assert_eq!(2, log10_pow5(4));
-    assert_eq!(1831, log10_pow5(2620));
-}
-
-#[test]
-fn test_float_to_bits() {
-    assert_eq!(0, 0.0_f32.to_bits());
-    assert_eq!(0x40490fda, 3.1415926_f32.to_bits());
-}
-
-#[test]
-fn test_double_to_bits() {
-    assert_eq!(0, 0.0_f64.to_bits());
-    assert_eq!(
-        0x400921FB54442D18,
-        3.1415926535897932384626433_f64.to_bits(),
-    );
-}