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, 28 deletions

diff --git a/vendor/time/src/interop/mod.rs b/vendor/time/src/interop/mod.rs
deleted file mode 100644
index d562663c..00000000
--- a/vendor/time/src/interop/mod.rs
+++ /dev/null
@@ -1,28 +0,0 @@
-//! Comparison, arithmetic, and conversion between various types in `time` and the standard library.
-//!
-//! Currently, full interoperability is present between [`OffsetDateTime`](crate::OffsetDateTime),
-//! [`UtcDateTime`](crate::UtcDateTime), and [`SystemTime`](std::time::SystemTime). Partial
-//! interoperability is present with [`js_sys::Date`]. Note that
-//! [`PrimitiveDateTime`](crate::PrimitiveDateTime) is not interoperable with any of these types due
-//! to the lack of an associated UTC offset.
-
-// Module names should have the two types sorted in alphabetical order. This avoids any question
-// of which type should be the "primary" type in the module name.
-
-#[cfg(all(
-    target_family = "wasm",
-    not(any(target_os = "emscripten", target_os = "wasi")),
-    feature = "wasm-bindgen"
-))]
-mod js_sys_date_offsetdatetime;
-#[cfg(all(
-    target_family = "wasm",
-    not(any(target_os = "emscripten", target_os = "wasi")),
-    feature = "wasm-bindgen"
-))]
-mod js_sys_date_utcdatetime;
-#[cfg(feature = "std")]
-mod offsetdatetime_systemtime;
-mod offsetdatetime_utcdatetime;
-#[cfg(feature = "std")]
-mod utcdatetime_systemtime;