Ludovic Vielle 71e8d662bc Log every authorization decision from the authorizer ...

Denials were invisible in the audit trail and evaluator explainability
(policy_id, reason) was discarded before reaching logs. Emit a structured
authz decision line on every evaluation in evaluateMultiInTx — allow,
deny, no_match, and assumption errors — using the existing authorizer
logger with opaque IDs only.

Add decision_log.go with DecisionRecord and logDecision. Surface
PolicyID and Reason on EvaluationResult for logging. Audit log
behavior is unchanged (allow-only). Document the convention in
authorization.md.

Signed-off-by: Ludovic Vielle <ludovic@probo.com>

2026-06-15 17:53:34 +02:00

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