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, 24 deletions

diff --git a/vendor/tinyvec/debug_metadata/tinyvec.natvis b/vendor/tinyvec/debug_metadata/tinyvec.natvis
deleted file mode 100644
index 7efccece..00000000
--- a/vendor/tinyvec/debug_metadata/tinyvec.natvis
+++ /dev/null
@@ -1,24 +0,0 @@
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-      <Item Name="[capacity]">$T2</Item>

-      <ArrayItems>

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\ No newline at end of file