* feat(cli): add NDJSON stdin protocol, list subcommands, and modularize run.ts
Overhaul the stdin prompt stream from raw text lines to a structured NDJSON
command protocol (start/message/cancel/ping/shutdown) with requestId
correlation, ack/done/error lifecycle events, and queue telemetry. Add list
subcommands (commands, modes, models) for programmatic discovery. Extract
stdin stream logic from run.ts into stdin-stream.ts and add shared isRecord
guard utility. Includes unit tests for all new modules.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix(core): fix Task.ts bug affecting CLI operation
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
