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, 27 deletions

diff --git a/vendor/bitflags/src/tests/clear.rs b/vendor/bitflags/src/tests/clear.rs
deleted file mode 100644
index 2d42cce4..00000000
--- a/vendor/bitflags/src/tests/clear.rs
+++ /dev/null
@@ -1,27 +0,0 @@
-use super::*;
-
-use crate::Flags;
-
-#[test]
-fn cases() {
-    case(TestFlags::from_bits_retain(0));
-
-    case(TestFlags::from_bits_retain(1 << 3));
-
-    case(TestFlags::ABC | TestFlags::from_bits_retain(1 << 3));
-
-    case(TestZero::empty());
-
-    case(TestZero::all());
-
-    case(TestFlags::from_bits_retain(1 << 3) | TestFlags::all());
-}
-
-#[track_caller]
-fn case<T: Flags + std::fmt::Debug>(mut flags: T)
-where
-    T: std::fmt::Debug + PartialEq + Copy,
-{
-    flags.clear();
-    assert_eq!(flags, T::empty(), "{:?}.clear()", flags);
-}