diff --git a/TODO b/TODO
index 304309f..85da717 100644
--- a/TODO
+++ b/TODO
@@ -134,3 +134,18 @@ Description: The README still describes sekft as the data factory
              posix-sdc. Rewrite it as the trainer (sft/eval/resident) that
              consumes posix-sdc, and update the module docstrings to
              console-script invocations and the chat-template render contract.
+
+--ISSUE
+Content-Type: application/issue
+ID: 9
+Type: feature
+Title: Type-check the package under mypy strict
+Status: open
+Priority: medium
+Created: 2026-06-17
+Module: sekft
+Relationships: 
+Description: Make the lint env honestly pass: add mypy as a dev dependency,
+             ignore_missing_imports for the ML libs, fully annotate
+             eval/resident/sft (including the inner operator callables), and
+             ship a py.typed marker so the Typing::Typed claim is real.