Move AI document parsing toggle from Config to Filtering tab

Removes duplicate: the setting was in Config tab (General Settings) AND
inside Advanced Settings in the Filtering tab. Now it lives only in the
Filtering tab as a prominent standalone toggle, since it's directly
related to AI filtering behavior.

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

src/app/(admin)/admin/rounds/[roundId]/page.tsx

@@ -1824,24 +1824,6 @@ export default function RoundDetailPage() {
                 />
               </div>
 
-              <div className="flex items-center justify-between p-4 rounded-md">
-                <div className="space-y-0.5">
-                  <Label htmlFor="ai-parse-files" className="text-sm font-medium">
-                    AI document parsing
-                  </Label>
-                  <p className="text-xs text-muted-foreground">
-                    Allow AI to read the contents of uploaded files (PDF/text) for deeper analysis during filtering and evaluation
-                  </p>
-                </div>
-                <Switch
-                  id="ai-parse-files"
-                  checked={!!config.aiParseFiles}
-                  onCheckedChange={(checked) => {
-                    handleConfigChange({ ...config, aiParseFiles: checked })
-                  }}
-                />
-              </div>
-
               <div className="border-t mt-2 pt-4 px-4 pb-2 bg-[#053d57]/[0.03] rounded-b-lg -mx-6 -mb-6 p-6">
                 <Label className="text-sm font-medium">Advancement Targets</Label>
                 <p className="text-xs text-muted-foreground mb-3">