- Update go.mod and Dockerfile to Go 1.26
- Apply `go fix ./...` stdlib modernizations across 170+ files
- Add `go fix` to post-implementation checklist in CLAUDE.md
- Fix go fix misapplied rewrite in loop_history.go
Register edit tool (sandboxed + non-sandboxed variants) with context file and memory interceptors in managed mode. Add cron tool for agent-facing job management. Register session tools (list, status, history, send) and message tool with proper SessionStoreAware, BusAware, and ChannelSenderAware wiring. Harden exec approval system to always be active with deny patterns + safe bins, defaulting to full