diff --git a/README.md b/README.md
index 5179187..0b8039b 100644
--- a/README.md
+++ b/README.md
@@ -179,8 +179,8 @@ Toasts go through `ds/toast` (a wrapper over `react-hot-toast`), rendered by `<H
 | `npm run preview` | Serve the build |
 | `npm run lint` | ESLint — currently clean |
 | `npm run lint:fix` | ESLint with `--fix` |
-| `npm test` | `scripts/skill-check.mjs` — 835 assertions over the skill and agent systems |
-| `npm run typecheck` | `tsc -p ./jsconfig.json` with `checkJs` |
+| `npm test` | `scripts/skill-check.mjs` — 1691 assertions over the skill and agent systems |
+| `npm run typecheck` | `tsc -p ./tsconfig.json` — 0 errors across 321 TypeScript files |
 
 ### The test harness
 
diff --git a/components.json b/components.json
index ebf7e6e..1d282e6 100644
--- a/components.json
+++ b/components.json
@@ -2,7 +2,7 @@
   "$schema": "https://ui.shadcn.com/schema.json",
   "style": "new-york",
   "rsc": false,
-  "tsx": false,
+  "tsx": true,
   "tailwind": {
     "config": "tailwind.config.js",
     "css": "src/index.css",
diff --git a/jsconfig.json b/jsconfig.json
deleted file mode 100644
index f5279e1..0000000
--- a/jsconfig.json
+++ /dev/null
@@ -1,21 +0,0 @@
-{
-  "compilerOptions": {
-    "baseUrl": ".",
-    "paths": {
-      "@/*": ["./src/*"]
-    },
-    "jsx": "react-jsx",
-    "module": "esnext",
-    "moduleResolution": "bundler",
-    "lib": ["esnext", "dom"],
-    "target": "esnext",
-    "checkJs": true,
-    "skipLibCheck": true,
-    "allowSyntheticDefaultImports": true,
-    "esModuleInterop": true,
-    "resolveJsonModule": true,
-    "types": []
-  },
-  "include": ["src/**/*"],
-  "exclude": ["node_modules", "dist", "src/components/ui", "src/api", "src/lib"]
-}
diff --git a/tsconfig.json b/tsconfig.json
index 8898352..28d7eea 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,13 +1,11 @@
 {
-  /* The TypeScript configuration, succeeding `jsconfig.json`.
-     Deliberately a translation of what was already there rather than a fresh
-     start: every option below that existed in jsconfig carries its old value,
-     so the first day of the migration checks exactly what the last day before
-     it checked. The four additions are marked.
-
-     `jsconfig.json` is left in place for now and is inert — TypeScript ignores
-     it wherever a `tsconfig.json` sits beside it. It is removed in the final
-     phase, once nothing is asking for it. */
+  /* The TypeScript configuration, and now the only one.
+     It began as a translation of `jsconfig.json` so that the first day of the
+     migration checked exactly what the last day before it checked. That file
+     has been deleted: it was inert from the moment this one appeared, because
+     TypeScript ignores a jsconfig wherever a tsconfig sits beside it, and
+     keeping a second stale copy of the options invited someone to edit the one
+     nothing reads. */
   "compilerOptions": {
     "baseUrl": ".",
     "paths": {
@@ -23,14 +21,16 @@
        output can appear next to a source file if anyone runs `tsc` directly. */
     "noEmit": true,
 
-    /* The two that make an incremental migration possible. `allowJs` lets a
-       `.ts` file and a `.js` file import each other with no ceremony, so files
-       can be converted one at a time instead of in one unreviewable commit;
-       `checkJs` keeps the JSDoc-typed JavaScript under the same scrutiny it
-       has had all along, so nothing is lost in the meantime. Both go away at
-       the end of the migration, not before. */
-    "allowJs": true,
-    "checkJs": true,
+    /* `allowJs` and `checkJs` were here for the migration and are gone: `src`
+       holds 321 TypeScript files and no JavaScript, and nothing under `src`
+       imports a `.js` module, so neither option has anything left to act on.
+       They are removed together because they are coupled — `checkJs` without
+       `allowJs` is TS5052, a configuration error rather than a code one.
+
+       Removing them also closes a door. With `allowJs` on, a `.js` file added
+       under `src` would be compiled and bundled silently; now it is a
+       resolution failure, which is the correct outcome for a codebase that has
+       finished migrating. */
 
     /* NEW. esbuild compiles each file on its own and cannot see across them, so
        a construct that needs whole-program knowledge — re-exporting a type as
@@ -71,8 +71,8 @@
 
   "include": ["src/**/*"],
 
-  /* `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
+  /* `src/components/ui`, `src/api` and `src/lib` used to be listed here,
+     inherited from jsconfig, each 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.