- Remove auto-discovery entirely (~450 lines)
* Delete internal/content/discoverer.go
* Simplify enhancer to single-phase processing
* Remove duplicate container expansion logic
- Consolidate repository implementations
* Move internal/content/client.go → internal/db/http_client.go
* Group all repository implementations in db/ package
- Add file utilities to engine following Go stdlib patterns
* Add engine.ProcessFile() and ProcessDirectory() methods
* Engine now handles both content processing AND file operations
- Move site management to dedicated package
* Move internal/content/site_manager.go → internal/sites/manager.go
* Clear separation of site lifecycle from content processing
- Preserve container expansion (syntactic sugar)
* .insertr on containers still auto-applies to viable children
* Container detection logic consolidated in engine/utils.go
Result: Clean architecture with single source of truth for .insertr processing
