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, 71 deletions

diff --git a/vendor/strsim/tests/lib.rs b/vendor/strsim/tests/lib.rs
deleted file mode 100644
index 991fc6f5..00000000
--- a/vendor/strsim/tests/lib.rs
+++ /dev/null
@@ -1,71 +0,0 @@
-extern crate strsim;
-
-use strsim::{
-    damerau_levenshtein, hamming, jaro, jaro_winkler, levenshtein, normalized_damerau_levenshtein,
-    normalized_levenshtein, osa_distance,
-};
-
-macro_rules! assert_delta {
-    ($x:expr, $y:expr) => {
-        assert_delta!($x, $y, 1e-5);
-    };
-    ($x:expr, $y:expr, $d:expr) => {
-        if ($x - $y).abs() > $d {
-            panic!(
-                "assertion failed: actual: `{}`, expected: `{}`: \
-                actual not within < {} of expected",
-                $x, $y, $d
-            );
-        }
-    };
-}
-
-#[test]
-fn hamming_works() {
-    match hamming("hamming", "hammers") {
-        Ok(distance) => assert_eq!(3, distance),
-        Err(why) => panic!("{:?}", why),
-    }
-}
-
-#[test]
-fn levenshtein_works() {
-    assert_eq!(3, levenshtein("kitten", "sitting"));
-}
-
-#[test]
-fn normalized_levenshtein_works() {
-    assert_delta!(0.57142, normalized_levenshtein("kitten", "sitting"));
-}
-
-#[test]
-fn osa_distance_works() {
-    assert_eq!(3, osa_distance("ac", "cba"));
-}
-
-#[test]
-fn damerau_levenshtein_works() {
-    assert_eq!(2, damerau_levenshtein("ac", "cba"));
-}
-
-#[test]
-fn normalized_damerau_levenshtein_works() {
-    assert_delta!(
-        0.27272,
-        normalized_damerau_levenshtein("levenshtein", "löwenbräu")
-    );
-}
-
-#[test]
-fn jaro_works() {
-    assert_delta!(
-        0.392,
-        jaro("Friedrich Nietzsche", "Jean-Paul Sartre"),
-        0.001
-    );
-}
-
-#[test]
-fn jaro_winkler_works() {
-    assert_delta!(0.866, jaro_winkler("cheeseburger", "cheese fries"), 0.001);
-}