turbo

cf7534cf - fix: Use FilterMode enum for root task scoping with exclude-only filters

fix: Use FilterMode enum for root task scoping with exclude-only filters Replace inline filter string parsing in the builder with a structured FilterMode enum returned from scope resolution. This pushes classification into the scope layer where TargetSelector is already parsed, fixing correctness gaps with directory-based root exclusion (e.g. --filter=!{.}) and eliminating duplicated filter microsyntax knowledge. Add unit tests for classify_filter_mode covering all filter mode combinations (exclude-only, root exclusion by name/directory/wildcard, mixed filters, affected, inference). Update ARCHITECTURE.md per repo policy. Fixes #8672