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, 109 deletions

diff --git a/vendor/thiserror/tests/test_option.rs b/vendor/thiserror/tests/test_option.rs
deleted file mode 100644
index 21cd5e10..00000000
--- a/vendor/thiserror/tests/test_option.rs
+++ /dev/null
@@ -1,109 +0,0 @@
-#![cfg(feature = "std")]
-#![cfg_attr(thiserror_nightly_testing, feature(error_generic_member_access))]
-
-#[cfg(thiserror_nightly_testing)]
-pub mod structs {
-    use std::backtrace::Backtrace;
-    use thiserror::Error;
-
-    #[derive(Error, Debug)]
-    #[error("...")]
-    pub struct OptSourceNoBacktrace {
-        #[source]
-        pub source: Option<anyhow::Error>,
-    }
-
-    #[derive(Error, Debug)]
-    #[error("...")]
-    pub struct OptSourceAlwaysBacktrace {
-        #[source]
-        pub source: Option<anyhow::Error>,
-        pub backtrace: Backtrace,
-    }
-
-    #[derive(Error, Debug)]
-    #[error("...")]
-    pub struct NoSourceOptBacktrace {
-        #[backtrace]
-        pub backtrace: Option<Backtrace>,
-    }
-
-    #[derive(Error, Debug)]
-    #[error("...")]
-    pub struct AlwaysSourceOptBacktrace {
-        pub source: anyhow::Error,
-        #[backtrace]
-        pub backtrace: Option<Backtrace>,
-    }
-
-    #[derive(Error, Debug)]
-    #[error("...")]
-    pub struct OptSourceOptBacktrace {
-        #[source]
-        pub source: Option<anyhow::Error>,
-        #[backtrace]
-        pub backtrace: Option<Backtrace>,
-    }
-}
-
-#[cfg(thiserror_nightly_testing)]
-pub mod enums {
-    use std::backtrace::Backtrace;
-    use thiserror::Error;
-
-    #[derive(Error, Debug)]
-    pub enum OptSourceNoBacktrace {
-        #[error("...")]
-        Test {
-            #[source]
-            source: Option<anyhow::Error>,
-        },
-    }
-
-    #[derive(Error, Debug)]
-    pub enum OptSourceAlwaysBacktrace {
-        #[error("...")]
-        Test {
-            #[source]
-            source: Option<anyhow::Error>,
-            backtrace: Backtrace,
-        },
-    }
-
-    #[derive(Error, Debug)]
-    pub enum NoSourceOptBacktrace {
-        #[error("...")]
-        Test {
-            #[backtrace]
-            backtrace: Option<Backtrace>,
-        },
-    }
-
-    #[derive(Error, Debug)]
-    pub enum AlwaysSourceOptBacktrace {
-        #[error("...")]
-        Test {
-            source: anyhow::Error,
-            #[backtrace]
-            backtrace: Option<Backtrace>,
-        },
-    }
-
-    #[derive(Error, Debug)]
-    pub enum OptSourceOptBacktrace {
-        #[error("...")]
-        Test {
-            #[source]
-            source: Option<anyhow::Error>,
-            #[backtrace]
-            backtrace: Option<Backtrace>,
-        },
-    }
-}
-
-#[test]
-#[cfg_attr(
-    not(thiserror_nightly_testing),
-    ignore = "requires `--cfg=thiserror_nightly_testing`"
-)]
-fn test_option() {}