- Add ~60 new keys to both fr and en translation objects (dashboard, printers_new, printer_list, clients, client_detail, drivers, packages, printer_detail, edit_modal)
- Fix test_dashboard_shows_recent_packages to use class-specific empty-state assertion (string now appears in i18n JS dictionary)
- Replace hardcoded 'fr' default with IIFE that checks localStorage first
- Falls back to navigator.language: 'en' if starts with 'en', else 'fr'
- localStorage preference always wins over browser language setting
- Add Alpine.store('theme') for Light/Dark/System cycling with localStorage persistence
- Add Alpine.store('i18n') with FR/EN translations for all static UI strings
- Add topbar with theme toggle button (:aria-label, @click cycle) and lang button
- Wrap main content in .main-wrapper + .topbar for layout structure
- Add .main-wrapper, .topbar, .topbar-controls styles to app.css
- Add test_theme_toggle_present integration test
- Fix test_dashboard_shows_recent_printers assertion (string now in i18n JS too)
- Dockerfile with python:3.12-slim-bookworm, curl downloads Pico CSS, HTMX, Alpine.js at build time
- docker-compose.yml with imptune_data:/data named volume and restart policy
- requirements.txt with all phase 1-5 dependencies
- imptune/config.py loading DATA_DIR/PORT from env with DB_PATH and DRIVERS_DIR derived paths
- imptune/main.py: FastAPI app with StaticFiles mount, health+pages routers, startup dir creation
- imptune/api/health.py: GET /health returning {"status": "ok"}
- imptune/api/pages.py: GET / returning dashboard.html with sync def handler
- imptune/templates/base.html: data-theme="auto", sidebar with 5 nav sections, /static/ paths only
- imptune/templates/dashboard.html: quick actions + empty state recent activity
- imptune/static/app.css: sidebar layout, active link highlight, quick action buttons