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, 37 deletions

diff --git a/vendor/petgraph/benches/graph6_decoder.rs b/vendor/petgraph/benches/graph6_decoder.rs
deleted file mode 100644
index dd6b5b9d..00000000
--- a/vendor/petgraph/benches/graph6_decoder.rs
+++ /dev/null
@@ -1,37 +0,0 @@
-#![feature(test)]
-
-extern crate petgraph;
-extern crate test;
-
-use petgraph::graph6::from_graph6_representation;
-use test::Bencher;
-
-#[bench]
-fn from_graph6_str_complete_7(bench: &mut Bencher) {
-    from_graph6_bench(bench, r"F~~~w");
-}
-
-#[bench]
-fn from_graph6_str_petersen(bench: &mut Bencher) {
-    from_graph6_bench(bench, r"IheA@GUAo");
-}
-
-#[bench]
-fn from_graph6_str_62(bench: &mut Bencher) {
-    from_graph6_bench(
-        bench,
-        r"}x@?xx|G[RO{QRDDMWAJ@XAT\M@IBsP?P[jJKOECP_QKSsL@_Th?mUp@@WC_woIl_nI?AF_ISAGNGxe?pikrJVOwWEqoMKhWGAjk[XPn?WUGrWC]jUjwPJLF@?OU?IGSoqT_rpEM[KCpTvGYBgRvOyJ`\adaY?qsESfR{IQWs?mT}bB@[|?p}MOCOEUZKMw]xKeV[en_EK{eBN?Add?H_@GeE_Bo@?_?PmabQuWc?FHVWcwCLWUF]l??WdIOtyePOc`Sb{SGCU[[__b[OiWnDeCXB@CwW@q_GAYY^eWD[tmoPDf{W]eKjzWCCKOj_",
-    );
-}
-
-#[bench]
-fn from_graph6_str_63(bench: &mut Bencher) {
-    from_graph6_bench(
-        bench,
-        r"~??~`U@aoLr_G\V`YnUdSA[@PG?CjSvrrFONaJODKrXQMOMEcExcwEILVHfUDsB[rGLhVVYJgI?DRSBAgsFwAVzs@gct_AL`NkAoRCaHOaTGWcgPs{@a_s^HLZBaB_[W_o__U|aRGLpdK@{EJ?xQOCcOksK_X@AI`aleB\KDwlOX?_@`_K@SD?QOQ?dAz]?hb{UYvdRRoQPrGKdgfUKIDQM\mZCjJW|?~XcoyIHEr~HycEDToBFD?_DT?bYNaQaQ`BMAYWuyo@Uz{dQwViiepaHfAdaaGO[CHW]ggCka?s@g@b?cbI[a@`BlU^nFxy?YL?R[GKIPm_",
-    );
-}
-
-fn from_graph6_bench(bench: &mut Bencher, graph6_str: &str) {
-    bench.iter(|| (from_graph6_representation::<u16>(graph6_str.to_string())));
-}