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, 114 deletions

diff --git a/vendor/unicode-width/benches/benches.rs b/vendor/unicode-width/benches/benches.rs
deleted file mode 100644
index 44aaee6a..00000000
--- a/vendor/unicode-width/benches/benches.rs
+++ /dev/null
@@ -1,114 +0,0 @@
-// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-#![feature(test)]
-
-extern crate test;
-
-use std::iter;
-
-use test::Bencher;
-
-use unicode_width::{UnicodeWidthChar, UnicodeWidthStr};
-
-#[bench]
-fn cargo(b: &mut Bencher) {
-    let string = iter::repeat('a').take(4096).collect::<String>();
-
-    b.iter(|| {
-        for c in string.chars() {
-            test::black_box(UnicodeWidthChar::width(c));
-        }
-    });
-}
-
-#[bench]
-#[allow(deprecated)]
-fn stdlib(b: &mut Bencher) {
-    let string = iter::repeat('a').take(4096).collect::<String>();
-
-    b.iter(|| {
-        for c in string.chars() {
-            test::black_box(c.width());
-        }
-    });
-}
-
-#[bench]
-fn simple_if(b: &mut Bencher) {
-    let string = iter::repeat('a').take(4096).collect::<String>();
-
-    b.iter(|| {
-        for c in string.chars() {
-            test::black_box(simple_width_if(c));
-        }
-    });
-}
-
-#[bench]
-fn simple_match(b: &mut Bencher) {
-    let string = iter::repeat('a').take(4096).collect::<String>();
-
-    b.iter(|| {
-        for c in string.chars() {
-            test::black_box(simple_width_match(c));
-        }
-    });
-}
-
-#[inline]
-fn simple_width_if(c: char) -> Option<usize> {
-    let cu = c as u32;
-    if cu < 127 {
-        if cu > 31 {
-            Some(1)
-        } else if cu == 0 {
-            Some(0)
-        } else {
-            None
-        }
-    } else {
-        UnicodeWidthChar::width(c)
-    }
-}
-
-#[inline]
-fn simple_width_match(c: char) -> Option<usize> {
-    match c as u32 {
-        cu if cu == 0 => Some(0),
-        cu if cu < 0x20 => None,
-        cu if cu < 0x7f => Some(1),
-        _ => UnicodeWidthChar::width(c),
-    }
-}
-
-#[bench]
-fn enwik8(b: &mut Bencher) {
-    // To benchmark, download & unzip `enwik8` from https://data.deepai.org/enwik8.zip
-    let data_path = "bench_data/enwik8";
-    let string = std::fs::read_to_string(data_path).unwrap_or_default();
-    b.iter(|| test::black_box(UnicodeWidthStr::width(string.as_str())));
-}
-
-#[bench]
-fn jawiki(b: &mut Bencher) {
-    // To benchmark, download & extract `jawiki-20220501-pages-articles-multistream-index.txt` from
-    // https://dumps.wikimedia.org/jawiki/20220501/jawiki-20220501-pages-articles-multistream-index.txt.bz2
-    let data_path = "bench_data/jawiki-20220501-pages-articles-multistream-index.txt";
-    let string = std::fs::read_to_string(data_path).unwrap_or_default();
-    b.iter(|| test::black_box(UnicodeWidthStr::width(string.as_str())));
-}
-
-#[bench]
-fn emoji(b: &mut Bencher) {
-    // To benchmark, download emoji-style.txt from https://www.unicode.org/emoji/charts/emoji-style.txt
-    let data_path = "bench_data/emoji-style.txt";
-    let string = std::fs::read_to_string(data_path).unwrap_or_default();
-    b.iter(|| test::black_box(UnicodeWidthStr::width(string.as_str())));
-}