Loopback dashboard tabs now share one one-shot stale-token recovery path across REST 401s, the PTY socket, the structured event socket, and the shared JSON-RPC gateway wrapper. The shared client exposes only an optional close-event interception hook; the dashboard remains responsible for deciding that loopback 4401 means reload.
Constraint: Current main delegates the web gateway to apps/shared JsonRpcGatewayClient, and #54022 review requires a shared-client-compatible close-code hook plus direct ChatSidebar event-socket coverage.
Rejected: Restore the dashboard's old direct WebSocket implementation | stale against the shared JSON-RPC client and would duplicate transport behavior.
Confidence: high
Scope-risk: moderate
Directive: Keep stale-token policy dashboard-specific; the shared JSON-RPC client should expose close events without learning dashboard auth semantics.
Tested: npm --workspace web test (21 files, 106 tests); focused stale-token tests (5 files, 14 tests); npm --workspace web run typecheck; npm --workspace @hermes/shared run lint; npm --workspace @hermes/shared run typecheck; focused web eslint; git diff --check.
Not-tested: Manual browser smoke test across a real dashboard restart.
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