diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c1e9a25..2b78378 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -37,6 +37,12 @@ jobs:
         env:
           NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Cache Electron binary
+        uses: actions/cache@v4
+        with:
+          path: ~/Library/Caches/electron
+          key: electron-${{ runner.os }}-${{ runner.arch }}-v42.2.0
+
       - name: Import signing certificate
         env:
           CERTIFICATE_BASE64: ${{ secrets.APPLE_CERTIFICATE }}
diff --git a/package-lock.json b/package-lock.json
index 93db764..011e558 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "openconduit",
-  "version": "2.0.0-beta.9",
+  "version": "2.0.0-beta.10",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "openconduit",
-      "version": "2.0.0-beta.9",
+      "version": "2.0.0-beta.10",
       "license": "AGPL-3.0-only",
       "dependencies": {
         "@anthropic-ai/foundry-sdk": "^0.2.3",
@@ -14,7 +14,7 @@
         "@aws-sdk/client-bedrock-runtime": "^3.1053.0",
         "@google/genai": "^2.3.0",
         "@modelcontextprotocol/sdk": "^1.29.0",
-        "@openconduit/core": "^2.0.0-beta.8",
+        "@openconduit/core": "^2.0.0-beta.9",
         "@sentry/electron": "^7.13.0",
         "@types/pdf-parse": "^1.1.5",
         "electron-squirrel-startup": "^1.0.1",
@@ -3120,7 +3120,9 @@
       }
     },
     "node_modules/@openconduit/core": {
-      "version": "2.0.0-beta.8",
+      "version": "2.0.0-beta.9",
+      "resolved": "https://npm.pkg.github.com/download/@openconduit/core/2.0.0-beta.9/bba0be420af650ca9b4d40bd0ff0b363d187082a",
+      "integrity": "sha512-RaZIiC7hiXcnLoYWDcfrK3eYXuqok889xSBOIfU3lhPKRjmbuMlEoyGAWFqLpAzizhXVumvkEb5FDh6bT/uUGQ==",
       "license": "AGPL-3.0",
       "dependencies": {
         "@codemirror/commands": "^6.10.3",
diff --git a/package.json b/package.json
index f2a57fa..98a20d8 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "openconduit",
   "productName": "OpenConduit",
-  "version": "2.0.0-beta.9",
+  "version": "2.0.0-beta.10",
   "description": "Cross-platform desktop AI chat client — OpenAI, Anthropic, LM Studio, and MCP tool servers",
   "main": ".vite/build/main.js",
   "private": true,
@@ -61,7 +61,7 @@
     "@aws-sdk/client-bedrock-runtime": "^3.1053.0",
     "@google/genai": "^2.3.0",
     "@modelcontextprotocol/sdk": "^1.29.0",
-    "@openconduit/core": "^2.0.0-beta.8",
+    "@openconduit/core": "^2.0.0-beta.9",
     "@sentry/electron": "^7.13.0",
     "@types/pdf-parse": "^1.1.5",
     "electron-squirrel-startup": "^1.0.1",
diff --git a/src/index.css b/src/index.css
index 3b5cefa..f1b0f29 100644
--- a/src/index.css
+++ b/src/index.css
@@ -1,6 +1,6 @@
 @import "tailwindcss";
 @import "./styles/brand_tokens.css";
-@source "../../../node_modules/@openconduit/core/src";
+@source "../node_modules/@openconduit/core/src";
 
 /* Tailwind v4: class-based dark mode — must be declared in CSS, not config */
 @variant dark (&:where(.dark, .dark *));
diff --git a/src/main/store/settings.ts b/src/main/store/settings.ts
index 6f744fb..974fdfe 100644
--- a/src/main/store/settings.ts
+++ b/src/main/store/settings.ts
@@ -93,7 +93,11 @@ export function getSettings(): AppSettings {
 
 export function setSettings(partial: Partial<AppSettings>): AppSettings {
   for (const [k, v] of Object.entries(partial)) {
-    settingsStore.set(k, v);
+    if (v === undefined) {
+      settingsStore.delete(k as keyof AppSettings);
+    } else {
+      settingsStore.set(k, v);
+    }
   }
   return settingsStore.store as AppSettings;
 }