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, 158 deletions

diff --git a/vendor/tinyvec/Cargo.toml b/vendor/tinyvec/Cargo.toml
deleted file mode 100644
index db45dc0b..00000000
--- a/vendor/tinyvec/Cargo.toml
+++ /dev/null
@@ -1,158 +0,0 @@
-# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
-#
-# When uploading crates to the registry Cargo will automatically
-# "normalize" Cargo.toml files for maximal compatibility
-# with all versions of Cargo and also rewrite `path` dependencies
-# to registry (e.g., crates.io) dependencies.
-#
-# If you are reading this file be aware that the original Cargo.toml
-# will likely look very different (and much more reasonable).
-# See Cargo.toml.orig for the original contents.
-
-[package]
-edition = "2018"
-name = "tinyvec"
-version = "1.9.0"
-authors = ["Lokathor <zefria@gmail.com>"]
-build = false
-exclude = [
-    "/.github",
-    "/*.py",
-    "/*.sh",
-    "/src-backup",
-]
-autolib = false
-autobins = false
-autoexamples = false
-autotests = false
-autobenches = false
-description = "`tinyvec` provides 100% safe vec-like data structures."
-readme = "README.md"
-keywords = [
-    "vec",
-    "no_std",
-    "no-std",
-]
-categories = [
-    "data-structures",
-    "no-std",
-]
-license = "Zlib OR Apache-2.0 OR MIT"
-repository = "https://github.com/Lokathor/tinyvec"
-
-[package.metadata.docs.rs]
-features = [
-    "alloc",
-    "std",
-    "grab_spare_slice",
-    "latest_stable_rust",
-    "serde",
-    "borsh",
-]
-rustdoc-args = [
-    "--cfg",
-    "docs_rs",
-]
-
-[package.metadata.playground]
-features = [
-    "alloc",
-    "std",
-    "grab_spare_slice",
-    "latest_stable_rust",
-    "serde",
-    "borsh",
-]
-
-[features]
-alloc = ["tinyvec_macros"]
-debugger_visualizer = []
-default = []
-experimental_write_impl = []
-grab_spare_slice = []
-latest_stable_rust = ["rustc_1_61"]
-nightly_slice_partition_dedup = []
-real_blackbox = ["criterion/real_blackbox"]
-rustc_1_40 = []
-rustc_1_55 = ["rustc_1_40"]
-rustc_1_57 = ["rustc_1_55"]
-rustc_1_61 = ["rustc_1_57"]
-std = ["alloc"]
-
-[lib]
-name = "tinyvec"
-path = "src/lib.rs"
-
-[[test]]
-name = "arrayvec"
-path = "tests/arrayvec.rs"
-
-[[test]]
-name = "debugger_visualizer"
-path = "tests/debugger_visualizer.rs"
-test = false
-required-features = ["debugger_visualizer"]
-
-[[test]]
-name = "tinyvec"
-path = "tests/tinyvec.rs"
-required-features = [
-    "alloc",
-    "std",
-]
-
-[[bench]]
-name = "macros"
-path = "benches/macros.rs"
-harness = false
-required-features = ["alloc"]
-
-[[bench]]
-name = "smallvec"
-path = "benches/smallvec.rs"
-harness = false
-required-features = [
-    "alloc",
-    "real_blackbox",
-]
-
-[dependencies.arbitrary]
-version = "1"
-optional = true
-
-[dependencies.borsh]
-version = "1.2.0"
-optional = true
-default-features = false
-
-[dependencies.generic-array]
-version = "1.1.1"
-optional = true
-default-features = false
-
-[dependencies.serde]
-version = "1.0"
-optional = true
-default-features = false
-
-[dependencies.tinyvec_macros]
-version = "0.1"
-optional = true
-
-[dev-dependencies.criterion]
-version = "0.3.0"
-
-[dev-dependencies.debugger_test]
-version = "0.1"
-
-[dev-dependencies.debugger_test_parser]
-version = "0.1"
-
-[dev-dependencies.serde_test]
-version = "1.0"
-
-[dev-dependencies.smallvec]
-version = "1"
-
-[profile.bench]
-debug = 2