feat(work-orders): new Mitchell1-style dashboard view (Phase 1 — layout + tabs)

Custom Filament Page at /app/work-orders/{id}/dashboard renders a
Mitchell1-inspired 3-column layout:
  - Top bar: WO#, status badge, actions (Edit / Tracking link)
  - Meta header row: creation / opened / ETA / responsible / urgency /
    paid amount (6 cells)
  - Left sidebar (300px): Client card (avatar, phone, email, status
    tag, 3-stat grid: visits/total/debt) + Vehicle card (photo, plate,
    VIN, mileage, engine, gearbox) + Repair history (latest 5 for this
    vehicle, links to dashboards)
  - Middle: tab bar (Lucrări/Piese/Diagnostic/Foto/Documente/Note)
    with Alpine-driven switching. Works & Parts show the tables read-
    only; add/edit still goes through existing EditWorkOrder Filament
    resource. Photos tab shows gallery from spatie/media-library.
  - Right (300px): Finance summary card (works cost, parts cost,
    discount, total, paid, balance) + placeholder for Timeline+Chat
    (Phase 2)
  - Responsive: right column collapses <1280px, left <900px.

'Vizualizare dashboard' button added on top of the existing
EditWorkOrder page so users can switch between edit form and info-
dense dashboard.

Fixed getSlug() signature (must match parent with ?Panel $panel).

+14 translations. All 306 tests pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

lang/en.json

@@ -522,6 +522,8 @@
   "Cost & marjă": "Cost & margin",
   "Cost (de la terț)": "Cost (subcontractor)",
   "Cost (terț)": "Cost (subcontractor)",
+  "Cost manopere": "Labor cost",
+  "Cost piese": "Parts cost",
   "Cost piese (achiziție)": "Parts cost (purchase)",
   "Cost/lead": "Cost/lead",
   "Costuri": "Costs",
@@ -891,6 +893,7 @@
   "Fără articol (manual)": "No article (manual)",
   "Fără client": "No client",
   "Fără maistru": "No master",
+  "Fără mașină": "No vehicle",
   "Fără răspuns": "No answer",
   "Fără stoc": "Out of stock",
   "GNC": "CNG",
@@ -996,6 +999,7 @@
   "Is vip": "VIP",
   "Istoric depozitare": "Storage history",
   "Istoric prețuri furnizori": "Supplier price history",
+  "Istoric reparații": "Repair history",
   "Iulie": "July",
   "Iunie": "June",
   "JSON": "JSON",
@@ -1246,11 +1250,13 @@
   "Nicio factură generată": "No invoice generated",
   "Nicio fișă de lucru": "No work orders",
   "Nicio fișă în perioada selectată.": "No orders in selected period.",
+  "Nicio fotografie": "No photos",
   "Nicio lucrare de caroserie": "No bodyshop jobs",
   "Nicio lucrare la terți": "No subcontracted work",
   "Nicio manoperă efectuată.": "No work performed.",
   "Nicio mașină încă": "No vehicles yet",
   "Nicio metodă de plată configurată. Contactează operatorul.": "No payment method configured. Contact operator.",
+  "Nicio notă internă.": "No internal notes.",
   "Nicio piesă implicită": "No default parts",
   "Nicio piesă montată.": "No parts installed.",
   "Nicio plată": "No payments",
@@ -1558,6 +1564,7 @@
   "Prețuri": "Prices",
   "Prețurile se înregistrează automat la fiecare recepție de PO.": "Prices are auto-recorded on every PO receipt.",
   "Price": "Price",
+  "Prima vizită": "First visit",
   "Primește cereri din canalul Telegram + trimite confirmări automate.": "Receive requests from the Telegram channel + send auto-confirmations.",
   "Primit": "Incoming",
   "Print": "Print",
@@ -1980,6 +1987,7 @@
   "Testează bot Telegram": "Test Telegram bot",
   "Theme color": "Theme color",
   "Time": "Time",
+  "Timeline & Chat — Phase 2": "Timeline & Chat — Phase 2",
   "Timp deschidere, ms": "Opening time, ms",
   "Timp lucrat": "Time worked",
   "Timp mediu": "Avg time",
@@ -2030,8 +2038,10 @@
   "Total general": "Grand total",
   "Total ieșiri": "Total outflow",
   "Total intrări": "Total inflow",
+  "Total manopere:": "Labor total:",
   "Total net": "Net total",
   "Total paid": "Total paid",
+  "Total piese:": "Parts total:",
   "Total plătit": "Total paid",
   "Total rezultate": "Total results",
   "Total venituri": "Total revenue",
@@ -2178,7 +2188,9 @@
   "Visa, Mastercard prin Stripe": "Visa, Mastercard prin Stripe",
   "Vizibil": "Visible",
   "Vizitator": "Viewer",
+  "Vizite": "Visits",
   "Vizual": "Visual",
+  "Vizualizare dashboard": "Dashboard view",
   "Vizualizează": "View",
   "Vizualizări": "Views",
   "Vopsea sărită": "Paint chip",