feat: implement keyvibe daemon with sound selection and configuration reloading

.github/workflows/ci.yml

@@ -0,0 +1,61 @@
+name: build-and-test
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches: [ "**" ]
+  pull_request:
+    branches: [ "**" ]
+
+jobs:
+  ubuntu-build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            build-essential \
+            pkg-config \
+            libjson-c-dev \
+            libpulse-dev \
+            libsndfile1-dev \
+            libinput-dev \
+            libevdev-dev \
+            libudev-dev
+
+      - name: Build (with repo-local PREFIX)
+        run: make -j$(nproc) PREFIX=$PWD
+
+      - name: Prepare data dir for runtime
+        run: |
+          mkdir -p "$PWD/share/keyvibe"
+          cp -r audio "$PWD/share/keyvibe/"
+
+      - name: List sound packs
+        run: ./keyvibe --list
+
+      - 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
+
+