docs: remove legacy shared types references

Author: Patel230

README.md

@@ -22,7 +22,7 @@ Trace is a Hawk support engine. Keep the dependency edge one-way:
 
 - depend on `hawk-core-contracts` when a stable cross-repo contract is needed
 - do not import `hawk/internal/*`
-- do not add new imports of `hawk/shared/types`; that path is compatibility-only
+- do not import removed legacy path `hawk/shared/types`; use `hawk-core-contracts/types`
 
 ### What you get
 

scripts/check-ecosystem-boundaries.sh

@@ -14,7 +14,7 @@ if [[ -n "${violations}" ]]; then
   echo "forbidden Hawk imports found:"
   echo "${violations}"
   echo
-  echo "support repos must use hawk-core-contracts or local contracts, not hawk/internal or hawk/shared/types"
+  echo "support repos must use hawk-core-contracts or local contracts, not hawk/internal or removed hawk/shared/types"
   exit 1
 fi