- 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
- Fix resolvePath for nested non-existent dirs (use resolveThroughExistingAncestors)
- Channel-isolated workspace: user_agent_profiles.workspace stores channel prefix,
used as source of truth with backward compat for existing users
- Loop caches workspace per-user with CacheKindUserWorkspace invalidation via pubsub
- ContractHome/ExpandHome for portable ~-based paths in DB
- create_image saves to workspace/generated/YYYY-MM-DD/ instead of OS temp dir
- SOUL.md template: add ## Expertise section for domain knowledge
- Summoner buildEditPrompt: section guide, complete file output, frontmatter update
- Bus: Topic* constants for Subscribe/Broadcast keys, CacheKind* for payload kinds
- Teams, delegates, sessions, agent links: various enhancements
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>