Fix kiosk intake routing, view names, and SignalR diagnostics

Three bugs identified:
1. Routing: /Kiosk/Intake/{token}/{action} had no matching route — 4-segment
   URL fell through the default 3-segment {controller}/{action}/{id?} route.
   Added explicit kiosk_intake route in Program.cs.

2. View names: Contact/Job/Terms/Confirmation actions returned View(model)
   which resolved to Views/Kiosk/{Action}.cshtml — those files don't exist.
   Views live in Views/Kiosk/Intake/. Fixed all six return statements.

3. Diagnostics: conn dot now starts gray ("Connecting...") and turns green
   only when SignalR actually connects. Red + message if no company ID or
   connection fails. Makes it easy to confirm the hub connection is live.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/PowderCoating.Web/Program.cs

@@ -727,6 +727,12 @@ app.UseMiddleware<PowderCoating.Web.Middleware.MustChangePasswordMiddleware>();
 // Track authenticated user presence (throttled, in-memory)
 app.UseMiddleware<PowderCoating.Web.Middleware.OnlineUserMiddleware>();
 
+// Kiosk intake steps use /Kiosk/Intake/{token}/{action} so the token is a path segment
+app.MapControllerRoute(
+    name: "kiosk_intake",
+    pattern: "Kiosk/Intake/{token}/{action}",
+    defaults: new { controller = "Kiosk" });
+
 app.MapControllerRoute(
     name: "default",
     pattern: "{controller=Home}/{action=Index}/{id?}");