Add votes-final flag, warn on missing votes, and sync phases with results toggle

Endpoints/StateEndpoints.cs

@@ -20,6 +20,7 @@ public static class StateEndpoints
             var summary = new
             {
                 CurrentPhase = phase,
+                player.VotesFinal,
                 state.ResultsOpen,
                 state.UpdatedAt,
                 Players = await db.Players.CountAsync(),
@@ -34,7 +35,7 @@ public static class StateEndpoints
             var player = await EndpointHelpers.GetAuthenticatedPlayer(ctx, db);
             if (player is null) return Results.Unauthorized();
             var phase = await EndpointHelpers.GetPhase(db, player.Id);
-            return Results.Ok(new { player.Id, player.DisplayName, player.Username, player.IsAdmin, CurrentPhase = phase });
+            return Results.Ok(new { player.Id, player.DisplayName, player.Username, player.IsAdmin, CurrentPhase = phase, player.VotesFinal });
         });
 
         app.MapPost("/api/me/phase/next", async (HttpContext ctx, AppDbContext db, IConfiguration config) =>
@@ -52,6 +53,7 @@ public static class StateEndpoints
             }
 
             player.CurrentPhase = next;
+            player.VotesFinal = false; // moving forward clears any prior finalize
             await db.SaveChangesAsync();
             return Results.Ok(new { player.CurrentPhase, appState.ResultsOpen });
         });
@@ -67,6 +69,7 @@ public static class StateEndpoints
             }
 
             player.CurrentPhase = PrevPhase(player.CurrentPhase);
+            player.VotesFinal = false;
             await db.SaveChangesAsync();
             var appState = await db.AppState.AsNoTracking().FirstAsync();
             return Results.Ok(new { player.CurrentPhase, appState.ResultsOpen });