diff --git a/CHANGELOG.md b/CHANGELOG.md
index 85c6576..dc1eb6d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,26 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- `@kkdev92/vscode-ext-kit` `^4.0.0` → `^4.1.0`, and `EditorSettings` declares
+  `contributed: false`. The `editor.tabSize` group has always been a section
+  this extension reads and does not own; 4.1.0 lets the declaration say so, and
+  the framework's manifest check — now also a command, `vscode-ext-kit manifest`
+  — stops asking `package.json` for an `editor.tabSize` entry. Run against this
+  extension's bundle, it reports `manifest ok: 47 command(s), 10 setting(s),
+  3 view(s) agree`; before the flag it reported that one setting as missing.
+
+  **The bundle grows by 6,415 bytes (348,529 → 354,944), and the growth is
+  accounted for.** Built against both kit versions and compared: `KIT_VERSION`
+  now reads `4.1.0`, and the rest is framework runtime that 4.1.0 added and
+  this extension links — a preflight failure reported as data rather than
+  sentences, a shutdown timeout that names the hosted service, operations and
+  scopes still holding it, `inspect()` on both scope kinds, and
+  `defineExtension` refusing a second activation after `deactivate`. Nothing
+  reached through a test or the command line enters the bundle: `describePlan`
+  and `diffManifest` are absent from it, as they should be. The 4.0.1 fix rides
+  along as well — the tree-view adapter no longer disposes a module-declared
+  provider twice on deactivation, which this extension's view was subject to.
+
 - `@kkdev92/vscode-ext-kit` `^3.0.0` → `^4.0.0`. The framework raised its own
   `engines.vscode` to `^1.134.0`, which this extension already declares, so the
   two now agree instead of the extension quietly requiring more than the library
diff --git a/package-lock.json b/package-lock.json
index dd1bfea..011cce2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.4.0",
       "license": "MIT",
       "dependencies": {
-        "@kkdev92/vscode-ext-kit": "^4.0.0"
+        "@kkdev92/vscode-ext-kit": "^4.1.0"
       },
       "devDependencies": {
         "@eslint/js": "^10.0.0",
@@ -936,10 +936,13 @@
       }
     },
     "node_modules/@kkdev92/vscode-ext-kit": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/@kkdev92/vscode-ext-kit/-/vscode-ext-kit-4.0.0.tgz",
-      "integrity": "sha512-8hKKvRCciiy06wKneqqw/ojE3MKh/gVVyAsWuxeCZeSceR8rKFB6hEt/11eRUVeh3Lf4o/2xsPIDBxasGsdcog==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/@kkdev92/vscode-ext-kit/-/vscode-ext-kit-4.1.0.tgz",
+      "integrity": "sha512-TiwfqvLhgQW5oaFCkjPY4zyK+S6QaJ+7AxRA633QClM8j8Yg7fR26jk9K0gWnrw7oi9cokeSNpJo2IjeGbTDsQ==",
       "license": "MIT",
+      "bin": {
+        "vscode-ext-kit": "bin/vscode-ext-kit.mjs"
+      },
       "engines": {
         "node": ">=22.12.0",
         "vscode": "^1.134.0"
diff --git a/package.json b/package.json
index 47447d6..f9c31ad 100644
--- a/package.json
+++ b/package.json
@@ -565,7 +565,7 @@
     "clean": "rimraf dist coverage .vsix-verify-temp quick-utils.vsix"
   },
   "dependencies": {
-    "@kkdev92/vscode-ext-kit": "^4.0.0"
+    "@kkdev92/vscode-ext-kit": "^4.1.0"
   },
   "devDependencies": {
     "@eslint/js": "^10.0.0",
diff --git a/src/core/config.ts b/src/core/config.ts
index bfae161..363a721 100644
--- a/src/core/config.ts
+++ b/src/core/config.ts
@@ -62,12 +62,17 @@ export type Config = SettingsAccessor<ConfigValues>;
  * declaration: a settings group is scoped to one section, and re-declaring a
  * VS Code-owned setting under `quickUtils.*` would mean maintaining a second
  * source of truth for something the editor already tracks.
+ *
+ * `contributed: false` says the same thing to the tooling: this extension reads
+ * the section and does not contribute it, so the manifest check does not ask
+ * `package.json` for an `editor.tabSize` entry.
  */
 export const EditorSettings = defineSettings({
   section: 'editor',
   values: {
     tabSize: setting.integer({ default: 4, minimum: 1, maximum: 16 }),
   },
+  contributed: false,
 });
 
 /** What a feature is handed to read `editor.*`. */