diff --git a/src/api/seed.ts b/src/api/seed.ts
index 570d9e9..acb78e6 100644
--- a/src/api/seed.ts
+++ b/src/api/seed.ts
@@ -1222,7 +1222,17 @@ const COURSES = [
  * what Owliver checks. `required_level` is the rung below, which is what makes
  * the ladder a ladder rather than a menu.
  */
-const MODULE_TABLE = [
+/**
+ * One training module per row: skill, rung, title, minutes, challenge type,
+ * description, and the criteria it is marked against.
+ *
+ * Written out as a tuple because a bare array of mixed literals infers as an
+ * array of the UNION of its column types, so destructuring a row below gives
+ * every field `string | number | string[]` — and `SKILL_CATEGORY[skill_id]`
+ * then refuses a key that might be an array. The tuple says which column is
+ * which, which is what the reader already assumes.
+ */
+const MODULE_TABLE: [string, string, string, number, string, string, string[]][] = [
   /* Server — the full four-rung ladder. */
   ['server', 'beginner', 'Server Fundamentals', 18, 'roleplay', 'Sequence of service, tray discipline, and the first ninety seconds at a table.', ['Greets and sets expectations', 'Follows the service sequence', 'Handles the tray safely']],
   ['server', 'beginner', 'Workplace Safety', 14, 'photo_identify', 'Spot the hazard before it becomes an incident — spills, traffic, hot pass.', ['Identifies floor hazards', 'Spots obstruction risks', 'Knows when to stop service']],
diff --git a/tsconfig.json b/tsconfig.json
index 45bf27e..8898352 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -71,14 +71,19 @@
 
   "include": ["src/**/*"],
 
-  /* Unchanged from jsconfig, and temporary. These three trees hold the densest
-     logic in the app — the transport layer, every hook, and the vendored UI
-     primitives — and none of it has ever been checked. Each exclusion is
-     removed by the phase that converts the tree behind it, so the error count
-     rises deliberately and in one identifiable place at a time.
+  /* `src/components/ui`, `src/api` and `src/lib` used to be listed here, from
+     jsconfig, and each was meant to come off as its tree was converted. They
+     were missed, and the miss was quiet by construction: excluding a file only
+     keeps it out of the ROOT set, and anything an included file imports is
+     pulled in anyway, so 318 of the 321 files were being checked regardless.
 
-     Note that excluding a file only keeps it out of the root set: one that an
-     included file imports is still checked, which is why errors from `src/api`
-     and `src/lib` already show up today. */
-  "exclude": ["node_modules", "dist", "src/components/ui", "src/api", "src/lib"]
+     The three that were not are the ones nothing under `src` imports —
+     `api/seed.ts`, `api/attendanceSeed.ts` and `lib/skills/positionFlow.ts`.
+     They are not dead: `scripts/` loads them, `seed.ts` from six places. They
+     were simply invisible to `tsc`, and held four real errors.
+
+     Removed before the strictness ratchet rather than after, because a flag
+     measured against an incomplete root set gives a number that grows again
+     later for reasons that have nothing to do with the flag. */
+  "exclude": ["node_modules", "dist"]
 }