diff --git a/.changeset/tsconfig-app-preset.md b/.changeset/tsconfig-app-preset.md
deleted file mode 100644
index c131351..0000000
--- a/.changeset/tsconfig-app-preset.md
+++ /dev/null
@@ -1,16 +0,0 @@
----
-"@btravstack/tsconfig": minor
----
-
-`app.json`: `base.json` with `declaration` and `declarationMap` off, for a
-workspace that emits no declarations.
-
-Declaration emit is type-checked even under `noEmit`, so `declaration: true`
-costs an application the errors it buys a library. Measured on a DI composition
-root with one unmet dependency: two `TS4023` lines about a library's internal
-`ID` / `SERVICE` brand symbols printed **first**, and the sentence naming the
-missing port printed third. An application that ships no `.d.ts` has nothing to
-gain from that check and pays for it on every mistake, internals-first.
-
-A library keeps `base.json`, where the check is the guarantee that its consumers
-can build.
diff --git a/packages/tsconfig/CHANGELOG.md b/packages/tsconfig/CHANGELOG.md
new file mode 100644
index 0000000..c181b47
--- /dev/null
+++ b/packages/tsconfig/CHANGELOG.md
@@ -0,0 +1,18 @@
+# @btravstack/tsconfig
+
+## 0.3.0
+
+### Minor Changes
+
+- d2cd3a9: `app.json`: `base.json` with `declaration` and `declarationMap` off, for a
+  workspace that emits no declarations.
+
+  Declaration emit is type-checked even under `noEmit`, so `declaration: true`
+  costs an application the errors it buys a library. Measured on a DI composition
+  root with one unmet dependency: two `TS4023` lines about a library's internal
+  `ID` / `SERVICE` brand symbols printed **first**, and the sentence naming the
+  missing port printed third. An application that ships no `.d.ts` has nothing to
+  gain from that check and pays for it on every mistake, internals-first.
+
+  A library keeps `base.json`, where the check is the guarantee that its consumers
+  can build.
diff --git a/packages/tsconfig/package.json b/packages/tsconfig/package.json
index cbc787b..18e43dd 100644
--- a/packages/tsconfig/package.json
+++ b/packages/tsconfig/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@btravstack/tsconfig",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "description": "Shared strict TypeScript configuration for btravstack packages",
   "keywords": [
     "config",