Load bounded hierarchical portable tool catalogs

docs/PORTABLE_TOOL_DEFINITION_IMPLEMENTATION_PLAN.md

@@ -383,12 +383,12 @@ Non-goals: filesystem catalog discovery or acquisition.
 ### PTD-07: Load Bounded Hierarchical Portable Tool Catalogs
 
 Scope: add injected-filesystem loading, ownership and namespace discovery,
-reference edge and depth limits, and duplicate/digest checks. The normative
+reference-edge depth limits, and duplicate/digest checks. The normative
 design defines no aggregate byte or record-count ceiling, so this slice adds
 none, and `bounded` here does not mean a ceiling on catalog size. It means
 three properties that hold however large the catalog is: each record's parse is
 bounded by the per-unit limits before that record is decoded; traversal and
-recursion are bounded by the edge and depth limits; and no allocation, buffer,
+recursion are bounded by the reference-edge depth limit; and no allocation, buffer,
 or traversal is ever sized by a count a record declares, only by content the
 loader has already observed. Loading a catalog of `n` records therefore costs
 work and retention linear in `n`, which is the operator's own embedded input,