feat: implement keyvibe daemon with sound selection and configuration reloading

.github/workflows/ci.yml

@@ -1,6 +1,9 @@
-
 name: build-and-test
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     branches: [ "**" ]
@@ -41,4 +44,18 @@ jobs:
       - name: Smoke test help
         run: ./keyvibe --help || true
 
+      - name: Extra smoke tests (non-fatal)
+        run: |
+          ./keyvibe --reload || true
+          ./keyvibe --stop || true
+
+      - name: Upload binaries
+        uses: actions/upload-artifact@v4
+        with:
+          name: keyvibe-binaries
+          path: |
+            keyvibe
+            keyvibe-audio
+            keyvibe-input
+