enhance: improve mock data realism and alert system

- Add dynamic metric fluctuations for VMs and containers in mock data
- Fix alert acknowledgment to dim instead of hide alerts
- Implement unacknowledge functionality with backend persistence
- Simplify alert UI to single-click toggle (remove selection system)
- Add proper hysteresis for alert resolution when metrics drop
- Fix SVG icon boundaries in alert displays
- Add webhook disable toggles for testing without notifications
- Fix frontend directory duplication issue (addresses frontend-modern recreation)
- Improve alert sorting to show most recent first
- Make mock system generate realistic metric changes for proper alert lifecycle

scripts/build-release.sh

@@ -27,11 +27,11 @@ npm ci
 npm run build
 cd ..
 
-# Copy frontend to api directory for embedding
-echo "Copying frontend for embedding..."
-sudo rm -rf internal/api/frontend-modern
-sleep 1  # Give filesystem time to sync
-cp -r frontend-modern internal/api/
+# Copy frontend dist for embedding (required for Go embed)
+echo "Copying frontend dist for embedding..."
+rm -rf internal/api/frontend-modern
+mkdir -p internal/api/frontend-modern
+cp -r frontend-modern/dist internal/api/frontend-modern/
 
 # Build for different architectures
 declare -A builds=(

scripts/hot-dev.sh

@@ -98,12 +98,15 @@ echo "Starting backend on port 7656..."
 cd /opt/pulse
 echo "Building backend (API-only mode for development)..."
 # Always rebuild in dev mode to ensure we have the right build
+echo "Building with PULSE_MOCK_MODE=${PULSE_MOCK_MODE}"
 go build -tags "dev" -o pulse ./cmd/pulse
 # Export all PULSE_MOCK_* variables for the backend
 export PULSE_MOCK_MODE PULSE_MOCK_NODES PULSE_MOCK_VMS_PER_NODE PULSE_MOCK_LXCS_PER_NODE PULSE_MOCK_RANDOM_METRICS PULSE_MOCK_STOPPED_PERCENT
 # Export auth variables if set
 export PULSE_AUTH_USER PULSE_AUTH_PASS
-PORT=7656 ./pulse &
+# Export PORT as well
+export PORT=7656
+./pulse &
 BACKEND_PID=$!
 
 # Wait for backend to start