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/ExperienceMultipliersClient.tsx

@@ -79,6 +79,8 @@ const emptySet: EditingSet = {
 export function ExperienceMultipliersClient() {
   const utils = trpc.useUtils();
   const { data: sets, isLoading } = trpc.experienceMultiplier.list.useQuery();
+  const { data: liveChapters } = trpc.resource.chapters.useQuery(undefined, { staleTime: 60_000 });
+  const chapterOptions = liveChapters?.length ? liveChapters : CHAPTER_PRESETS;
 
   const createMutation = trpc.experienceMultiplier.create.useMutation({
     onSuccess: () => {
@@ -352,7 +354,7 @@ export function ExperienceMultipliersClient() {
           </div>
 
           <datalist id="chapter-presets">
-            {CHAPTER_PRESETS.map((d) => (
+            {chapterOptions.map((d) => (
               <option key={d} value={d} />
             ))}
           </datalist>