## Why
Forwarded network policy decisions are audit telemetry and should not be
written to the persistent state log.
## What changed
- Emit forwarded `codex.network_proxy.policy_decision` events on the
`codex_otel.log_only` target, keeping them available to OTEL log export while
excluding them from persistent logs.
- Assert the log-only target in the existing trusted-metadata audit test.
GitOrigin-RevId: 16d07c8f390245036e4fa092a876012ef2b2fdba
## What changed
- Add a best-effort `network/policyDecision` notification for final domain and non-domain policy decisions made by executor-local proxies.
- Validate notifications against the active process on the controller and emit audit events with controller-trusted session and execution metadata.
- Reserve outbound RPC capacity so audit notifications cannot block control messages, and expose valid `chatgpt-account-id` header values for audit attribution.
## Testing
- Cover notification serialization, proxy decision capture, executor-to-controller delivery, trusted metadata handling, and reserved RPC capacity.
GitOrigin-RevId: a39f96a6b3d9401c03d54eaef5b9a6d3fe0da78b
viyatb-oai