test: add object method positive typecheck fixture

docs/ADVANCED_STATIC_TYPING.md

@@ -123,6 +123,8 @@ Output:
 Type mismatch for method Player.add: parameter points needs NUMBER, but this argument looks like TEXT.
 ```
 
+Both sides of this narrow method foundation are covered by validation: `tests/typecheck_method_good.claro` checks that `DO player.add 5` is accepted, and `tests/typecheck_method_bad.claro` checks the friendly wrong-type diagnostic.
+
 ## Status
 
 This is currently a static checker feature. It improves `claro typecheck` and validation confidence for `DO` and compatibility `CALL ... WITH` function calls, plus simple `DO object.method ...` calls where the object was created with `NEW Class name`. Runtime enforcement for every container mutation and richer function/object signatures can be added later after the syntax is classroom-tested.

docs/CURRENT_STATUS.md

@@ -52,7 +52,7 @@ Ready now:
 - typed variables such as `SET score NUMBER 10`
 - `TYPE OF` and `CHECK TYPE`
 - typed list/map checks through `claro typecheck`
-- a narrow function/method argument check: `CHECK TYPE parameter IS TYPE` inside a function or simple object method lets `claro typecheck` catch mismatched `DO`, `CALL ... WITH`, and `DO object.method ...` arguments
+- a narrow function/method argument check: `CHECK TYPE parameter IS TYPE` inside a function or simple object method lets `claro typecheck` accept correct checked calls and catch mismatched `DO`, `CALL ... WITH`, and `DO object.method ...` arguments
 
 Still needed:
 - richer typed function signatures and return values

docs/ROADMAP.md

@@ -31,7 +31,7 @@ See `CURRENT_STATUS.md` for the detailed feature matrix.
 
 1. Keep beginner-facing docs current and separate from historical release notes.
 2. Keep examples aligned with the modern simple syntax (`END`, `DO`, short `SET`, short `ASK`) while documenting older compatibility forms separately.
-3. Expand validation around typecheck diagnostics and package/networking safety.
+3. Expand validation around typecheck diagnostics and package/networking safety. Current object-method parameter validation covers one correct `DO object.method ...` call and one wrong-type diagnostic.
 4. Add small examples for each foundation feature before adding bigger syntax.
 
 ## Complete-platform milestones