fix: address code review issues from draft board scrolling and team creation changes (#35)

- DraftGrid: wrap header and rows in a single min-w-max container so
  column widths share a sizing context and can't desync
- Settings: wrap team + draft slot creation in a DB transaction so a
  slot insert failure can't leave orphaned teams with no slots
- Settings: replace Math.max(...spread) with reduce to avoid the JS
  argument limit (defensive, given the 6-16 team cap)
- Settings: remove now-unused createManyTeams import

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

app/components/DraftGrid.tsx

@@ -47,7 +47,8 @@ export function DraftGrid({
   return (
     <Card className="p-4">
       {title && <h2 className="text-xl font-semibold mb-4">{title}</h2>}
-      <div className="w-full">
+      <div className="w-full overflow-x-auto">
+        <div className="min-w-max">
         {/* Team Headers */}
         <div className="flex gap-2 mb-2">
           {draftSlots.map((slot) => {
@@ -175,6 +176,7 @@ export function DraftGrid({
             );
           })}
         </div>
+        </div>
       </div>
     </Card>
   );

app/components/draft/DraftGridSection.tsx

@@ -81,10 +81,10 @@ export function DraftGridSection({
   );
 
   return (
-    <div className="h-full overflow-auto p-4">
-      <h2 className="text-xl font-semibold mb-4">Draft Grid</h2>
-      <div className="overflow-x-auto">
-        <div className="inline-block min-w-full">
+    <div className="h-full flex flex-col p-4">
+      <h2 className="text-xl font-semibold mb-4 flex-shrink-0">Draft Grid</h2>
+      <div className="flex-1 overflow-auto">
+        <div className="inline-block min-w-full min-h-full">
           {/* Team Headers */}
           <div className="flex gap-2 mb-2 sticky top-0 z-10 bg-background/95 backdrop-blur-sm py-1">
             {/* Spacer for round column — sticky so it covers the corner when scrolling both axes */}

app/routes/leagues/$leagueId.settings.tsx

@@ -12,11 +12,13 @@ import {
   removeCommissionerByLeagueAndUser,
 } from "~/models/commissioner";
 import { findCurrentSeasonWithSports, updateSeason } from "~/models/season";
-import { findTeamsBySeasonId, createManyTeams, deleteTeam, removeTeamOwner, assignTeamOwner } from "~/models/team";
+import { findTeamsBySeasonId, deleteTeam, removeTeamOwner, assignTeamOwner } from "~/models/team";
 import { findAllUsers, findUserByClerkId, isUserAdminByClerkId } from "~/models/user";
 import { unlinkSportFromSeason, linkMultipleSportsToSeason } from "~/models/season-sport";
 import { findAllSportsSeasons } from "~/models/sports-season";
 import { findDraftSlotsBySeasonId, setDraftOrder, randomizeDraftOrder } from "~/models/draft-slot";
+import { database } from "~/database/context";
+import * as schema from "~/database/schema";
 import { deleteAllDraftPicks } from "~/models/draft-pick";
 import { clearAllQueuesForSeason } from "~/models/draft-queue";
 import { deleteSeasonTimers } from "~/models/draft-timer";
@@ -482,16 +484,34 @@ export async function action(args: Route.ActionArgs) {
 
           // Add or remove teams as needed
           if (newTeamCount > currentTeamCount) {
-            // Add new teams
             const teamsToAdd = Array.from(
               { length: newTeamCount - currentTeamCount },
               (_, i) => ({
                 seasonId: season.id,
                 name: `Team ${currentTeamCount + i + 1}`,
-                ownerId: null,
+                ownerId: null as null,
               })
             );
-            await createManyTeams(teamsToAdd);
+
+            // Fetch existing slots before the transaction to determine append position
+            const existingSlots = await findDraftSlotsBySeasonId(season.id);
+            const maxOrder = existingSlots.reduce((max, s) => Math.max(max, s.draftOrder), 0);
+
+            // Create teams and their draft slots atomically
+            const db = database();
+            await db.transaction(async (tx) => {
+              const newTeams = await tx
+                .insert(schema.teams)
+                .values(teamsToAdd)
+                .returning();
+              await tx.insert(schema.draftSlots).values(
+                newTeams.map((team, i) => ({
+                  seasonId: season.id,
+                  teamId: team.id,
+                  draftOrder: maxOrder + i + 1,
+                }))
+              );
+            });
           } else if (newTeamCount < currentTeamCount) {
             // Remove teams without owners (from the end)
             const teamsToRemove = teams