+- Make Ultra workflow `report` values available to agents as well as human-facing output, while preserving full-output references for oversized reports
- Refine Ultra model-tier selection around residual judgement: default to `small`, use `tiny` only for deterministic work, decompose when context or risk benefits exceed handoff cost, and block rather than compensate for missing facts or authority
- Add Witness definition discovery, validation, trusted project overrides, `/witness list`, `/witness show`, `/witness validate`, and isolated manual text observers through `/witness run <id>`; cancel stale runs and preserve child usage
- Load no extensions into Angel children by default, add `angel.subagentExtensions` for `"all"`, `"none"`, or a static sibling-extension whitelist, and keep unavailable parent-local or on-demand tools from blocking consultation