feat(G-08): chapter field uses live datalist from resource.chapters

All chapter text inputs now show autocomplete suggestions from the
database (distinct chapter values from active resources) via HTML
<datalist> wired to trpc.resource.chapters:

- ResourceModal: chapter input
- RateCardsClient: rate card line chapter input
- EffortRulesClient: effort rule chapter input
- ExperienceMultipliersClient: replaces hardcoded CHAPTER_PRESETS
  with live data, falls back to presets when no data available

Also revert blueprintRolePresetsInputSchema to z.array(z.unknown())
to restore compatibility with StaffingRequirement[] call sites.

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

apps/web/src/components/admin/RateCardsClient.tsx

@@ -124,6 +124,7 @@ export function RateCardsClient() {
 
   const { data: roles } = trpc.role.list.useQuery({});
   const { data: clientsData } = trpc.clientEntity.list.useQuery({});
+  const { data: chapters } = trpc.resource.chapters.useQuery(undefined, { staleTime: 60_000 });
 
   // ─── Mutations ──────────────────────────────────────────────────────────
 
@@ -682,7 +683,11 @@ export function RateCardsClient() {
                     onChange={(e) => setEditingLine({ ...editingLine, chapter: e.target.value })}
                     placeholder="e.g. Animation"
                     className="border border-gray-300 dark:border-gray-600 rounded-lg px-3 py-2 text-sm w-full bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100 focus:outline-none focus:ring-2 focus:ring-brand-400"
+                    list="rc-chapter-list"
                   />
+                  <datalist id="rc-chapter-list">
+                    {chapters?.map((c) => <option key={c} value={c} />)}
+                  </datalist>
                 </div>
                 <div>
                   <label className="flex items-center text-xs font-medium text-gray-600 dark:text-gray-400 mb-1">Location <InfoTooltip content="Geographic location for region-specific rate pricing." /></label>