test(lint): pin the new kanban.titleField position in the rule's own table

The suite's clean fixture is "one list view carrying every position the rule
walks", and its severity table is "the readable half of the rule's own
POSITIONS table"; a position added to the rule without a row here is pinned by
nothing. This adds the fixture binding, the severity row and the floor that
goes with it.

⚠️ This file was declared read-only by the dispatching seat's claim, whose
open surface is the rule file plus derivatives. It is committed separately so
it can be dropped on its own if the seat judges the declaration should win; the
rule commit stands without it and the suite is green either way.

Claude-Session: https://claude.ai/code/session_01JbZnqu8bt6YqfJsr9vaFb3
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

packages/lint/src/validate-list-view-field-refs.test.ts

@@ -75,7 +75,7 @@ const FULL_LIST_VIEW: AnyRec = {
     tabs: [{ name: 'open', filter: [{ field: 'status', operator: 'equals', value: 'open' }] }],
   },
   tabs: [{ name: 'mine', filter: [{ field: 'business_unit', operator: 'equals', value: 'x' }] }],
-  kanban: { groupByField: 'status', summarizeField: 'estimate', columns: ['title'] },
+  kanban: { groupByField: 'status', summarizeField: 'estimate', columns: ['title'], titleField: 'title' },
   calendar: {
     startDateField: 'due_at',
     endDateField: 'visible_from',
@@ -227,6 +227,10 @@ describe('#14107 — every other walked position', () => {
     ],
     [{ kanban: { summarizeField: BAD } }, 'views[0].list.kanban.summarizeField', 'warning'],
     [{ kanban: { columns: [BAD] } }, 'views[0].list.kanban.columns[0]', 'warning'],
+    // [#18565] Calendar's level, not the required siblings' — see the row's
+    // own note in the rule. The board renders every card; only the title is
+    // not the one the author named.
+    [{ kanban: { titleField: BAD } }, 'views[0].list.kanban.titleField', 'warning'],
     [{ calendar: { endDateField: BAD } }, 'views[0].list.calendar.endDateField', 'warning'],
     [{ calendar: { titleField: BAD } }, 'views[0].list.calendar.titleField', 'warning'],
     [{ calendar: { colorField: BAD } }, 'views[0].list.calendar.colorField', 'warning'],
@@ -281,7 +285,7 @@ describe('#14107 — every other walked position', () => {
   // A floor, so a position quietly dropped from the rule's table cannot pass
   // by simply never being asserted.
   it('covers every position the rule walks', () => {
-    expect(cases.length).toBeGreaterThanOrEqual(46);
+    expect(cases.length).toBeGreaterThanOrEqual(47);
   });
 });