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, 135 deletions

diff --git a/vendor/bitflags/src/tests.rs b/vendor/bitflags/src/tests.rs
deleted file mode 100644
index 0770e1b3..00000000
--- a/vendor/bitflags/src/tests.rs
+++ /dev/null
@@ -1,135 +0,0 @@
-mod all;
-mod bitflags_match;
-mod bits;
-mod clear;
-mod complement;
-mod contains;
-mod difference;
-mod empty;
-mod eq;
-mod extend;
-mod flags;
-mod fmt;
-mod from_bits;
-mod from_bits_retain;
-mod from_bits_truncate;
-mod from_name;
-mod insert;
-mod intersection;
-mod intersects;
-mod is_all;
-mod is_empty;
-mod iter;
-mod parser;
-mod remove;
-mod symmetric_difference;
-mod truncate;
-mod union;
-mod unknown;
-
-bitflags! {
-    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
-    pub struct TestFlags: u8 {
-        /// 1
-        const A = 1;
-
-        /// 1 << 1
-        const B = 1 << 1;
-
-        /// 1 << 2
-        const C = 1 << 2;
-
-        /// 1 | (1 << 1) | (1 << 2)
-        const ABC = Self::A.bits() | Self::B.bits() | Self::C.bits();
-    }
-
-    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
-    pub struct TestFlagsInvert: u8 {
-        /// 1 | (1 << 1) | (1 << 2)
-        const ABC = Self::A.bits() | Self::B.bits() | Self::C.bits();
-
-        /// 1
-        const A = 1;
-
-        /// 1 << 1
-        const B = 1 << 1;
-
-        /// 1 << 2
-        const C = 1 << 2;
-    }
-
-    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
-    pub struct TestZero: u8 {
-        /// 0
-        const ZERO = 0;
-    }
-
-    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
-    pub struct TestZeroOne: u8 {
-        /// 0
-        const ZERO = 0;
-
-        /// 1
-        const ONE = 1;
-    }
-
-    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
-    pub struct TestUnicode: u8 {
-        /// 1
-        const 一 = 1;
-
-        /// 2
-        const 二 = 1 << 1;
-    }
-
-    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
-    pub struct TestEmpty: u8 {}
-
-    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
-    pub struct TestOverlapping: u8 {
-        /// 1 | (1 << 1)
-        const AB = 1 | (1 << 1);
-
-        /// (1 << 1) | (1 << 2)
-        const BC = (1 << 1) | (1 << 2);
-    }
-
-    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
-    pub struct TestOverlappingFull: u8 {
-        /// 1
-        const A = 1;
-
-        /// 1
-        const B = 1;
-
-        /// 1
-        const C = 1;
-
-        /// 2
-        const D = 1 << 1;
-    }
-
-    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
-    pub struct TestExternal: u8 {
-        /// 1
-        const A = 1;
-
-        /// 1 << 1
-        const B = 1 << 1;
-
-        /// 1 << 2
-        const C = 1 << 2;
-
-        /// 1 | (1 << 1) | (1 << 2)
-        const ABC = Self::A.bits() | Self::B.bits() | Self::C.bits();
-
-        /// External
-        const _ = !0;
-    }
-
-    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
-    pub struct TestExternalFull: u8 {
-        /// External
-        const _ = !0;
-    }
-}