fix: eliminate magic strings and fix aggregate boundary detection

- Extract DDD folder names and repository method suggestions to constants
- Fix regex pattern to support relative paths (domain/... without leading /)
- Add non-aggregate folder exclusions (constants, shared, factories, etc.)
- Remove findAll, exists, count from ORM_QUERY_METHODS (valid domain methods)
- Add exists, count, countBy patterns to domainMethodPatterns
- Add aggregate boundary test examples

packages/guardian/src/infrastructure/constants/orm-methods.ts

@@ -2,7 +2,6 @@ export const ORM_QUERY_METHODS = [
     "findOne",
     "findMany",
     "findFirst",
-    "findAll",
     "findAndCountAll",
     "insert",
     "insertMany",
@@ -17,8 +16,6 @@ export const ORM_QUERY_METHODS = [
     "run",
     "exec",
     "aggregate",
-    "count",
-    "exists",
 ] as const
 
 export type OrmQueryMethod = (typeof ORM_QUERY_METHODS)[number]