feat: add bump-version.sh script for version management

Automates version bumps across all version source files:
- Cargo.toml (PRIMARY - workspace.package.version)
- debian/changelog (prepend new entry)
- debian/control (update Version field)
- scripts/build-package.sh (update VERSION variable)
- frontend/package.json (update version field)
- Stale references check after bump

Usage: ./scripts/bump-version.sh <new_version> <old_version>

scripts/build-frontend.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+# =============================================================================
+# Linux Patch Manager — Frontend Build Script
+# =============================================================================
+# Builds the React + TypeScript SPA and copies output to the system frontend dir.
+# Run from the repository root.
+# =============================================================================
+
+set -euo pipefail
+
+GREEN='\033[0;32m'
+RED='\033[0;31m'
+NC='\033[0m'
+
+info()  { echo -e "${GREEN}[INFO]${NC}  $*"; }
+error() { echo -e "${RED}[ERROR]${NC} $*" >&2; exit 1; }
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
+FRONTEND_DIR="${REPO_ROOT}/frontend"
+DEST_DIR="${1:-/usr/share/patch-manager/frontend}"
+
+info "Building React SPA..."
+cd "${FRONTEND_DIR}"
+
+# Install dependencies if node_modules not present
+if [[ ! -d node_modules ]]; then
+    info "Installing npm dependencies..."
+    npm ci
+fi
+
+# Build
+info "Running vite build..."
+npm run build
+
+# Deploy to destination
+info "Copying build output to ${DEST_DIR}..."
+mkdir -p "${DEST_DIR}"
+rm -rf "${DEST_DIR:?}/"
+cp -r dist/* "${DEST_DIR}/"
+
+info "Frontend build complete → ${DEST_DIR}"