* feat: per-group timezone architecture with context injection (#483) Implement a comprehensive timezone consistency layer so the AI agent always receives timestamps in the user's local timezone. The framework handles all UTC↔local conversion transparently — the agent never performs manual timezone math. Key changes: - Per-group timezone stored in containerConfig (no DB migration needed) - Context injection: <context timezone="..." current_time="..." /> header prepended to every agent prompt with local time and IANA timezone - Message timestamps converted from UTC to local display in formatMessages() - schedule_task translation layer: agent writes local times, framework converts to UTC using per-group timezone for cron, once, and interval types - Container TZ env var now uses per-group timezone instead of global constant - New set_timezone MCP tool for users to update their timezone dynamically - NANOCLAW_TIMEZONE passed to MCP server environment for tool confirmations Architecture: Store UTC everywhere, convert at boundaries (display to agent, parse from agent). Groups without timezone configured fall back to the server TIMEZONE constant for full backward compatibility. Closes #483 Closes #526 Co-authored-by: shawnYJ <shawny011717@users.noreply.github.com> Co-authored-by: Adrian <Lafunamor@users.noreply.github.com> Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com> * style: apply prettier formatting Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com> * refactor: strip to minimalist context injection — global TIMEZONE only Remove per-group timezone support, set_timezone MCP tool, and all related IPC handlers. The implementation now uses the global system TIMEZONE for all groups, keeping the diff focused on the message formatting layer: mandatory timezone param in formatMessages(), <context> header injection, and formatLocalTime/formatCurrentTime helpers. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * refactor: drop formatCurrentTime and simplify context header Address PR review: remove redundant formatCurrentTime() since message timestamps already carry localized times. Simplify <context> header to only include timezone name. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> --------- Co-authored-by: shawnYJ <shawny011717@users.noreply.github.com> Co-authored-by: Adrian <Lafunamor@users.noreply.github.com> Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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