v1.0.3

Agent ergonomics. New RPCs: bridge.alive / bridge.describe / bridge.metrics (observability), palette.block / palette.unblock / palette.listBlocked / palette.isBlocked (runtime-mutable blocklist persisted to disk), command.execute dryRun (preflight without firing), window.listModals / modal.dismiss (detect + close stuck dialogs), debug.lastCrash (parsed IPS reports), debug.mainThreadBacktrace (best-effort host-app stack), log.tail / log.path (log without shelling), batch.execute (multi-RPC), session.snapshot / session.restore (document set save/restore). Every RPC now auto-records per-method latency + error counters.