Quota override cell stays a table cell, flex on an inner wrapper (#329)

Same defect and same fix as the user list's actions cell (#177):
display:flex directly on the override td removed its table-cell
behaviour, so the cell stopped growing to row height and its bottom
border no longer met the row's — visibly uneven separator lines
(Stefan's screenshot from the self-hosting walkthrough). The flex
layout now lives on .quota-row__override-inner.

Measured locally like #177: bottom-delta across all cells of every
quota row was 24–49 px before, 0 px after (override set, so the cell
carries input + two link buttons); admin-quotas e2e pack green.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017aviRTgWCcAHUh1SBoxf6P

apps/web/src/pages/QuotaManager.tsx

@@ -138,6 +138,10 @@ function QuotaRow({
       <td>{t(`keys.${line.key}`)}</td>
       <td>{line.instanceDefault}</td>
       <td className="quota-row__override">
+        {/* Flex lives on the inner div: a td with display:flex stops behaving
+            like a table cell and its bottom border no longer meets the row's
+            (same fix as the user list's actions cell, #177). */}
+        <div className="quota-row__override-inner">
           <input
             type="number"
             min={0}
@@ -153,6 +157,7 @@ function QuotaRow({
               {t('overrides.clear')}
             </button>
           )}
+        </div>
       </td>
       <td className="quota-row__effective">{line.effective}</td>
       <td className="quota-row__usage">

apps/web/src/styles/base.css

@@ -3048,7 +3048,7 @@ ul[data-type='task_list'] li p:last-of-type {
   margin-bottom: var(--space-2);
 }
 
-.quota-row__override {
+.quota-row__override-inner {
   display: flex;
   align-items: center;
   gap: var(--space-2);