andrew c338e80180 Harden bearer auth: constant-time compare, hashed at rest, authoritative actor_id ... Fixes two live authz bugs in omnigraph-server: - Bearer-token lookup previously used HashMap::get, which compares keys with Eq and short-circuits on the first differing byte — a network-observable timing oracle for brute-forcing tokens. Tokens are now stored as SHA-256 digests and compared with subtle::ConstantTimeEq, iterating every entry unconditionally so total work is independent of which slot matches. Raw token bytes no longer live in server memory after startup. - authorize_request now overwrites PolicyRequest.actor_id from the authenticated session instead of trusting the handler-supplied field, which previously defaulted to "" via unwrap_or_default(). The empty string can no longer reach Cedar as a policy subject even if a future refactor drops the None check. External API of AppState constructors is unchanged — tokens still enter as Vec<(String, String)> and are hashed on the way in. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>		2026-04-18 01:41:02 +03:00
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omnigraph	Prepare v0.2.2 release	2026-04-14 20:13:00 +03:00
omnigraph-cli	Polish schema endpoint: rename show, align field name, add tests	2026-04-18 00:30:46 +03:00
omnigraph-compiler	Prepare v0.2.2 release	2026-04-14 20:13:00 +03:00
omnigraph-server	Harden bearer auth: constant-time compare, hashed at rest, authoritative actor_id	2026-04-18 01:41:02 +03:00