fix: tech debt batch 1 — TS errors, vulnerabilities, dead code

- Fixed 12 TypeScript errors across analytics.ts, observer-project-detail.tsx, bulk-upload/page.tsx, settings/profile/page.tsx
- npm audit: 8 vulnerabilities resolved (1 critical, 4 high, 3 moderate)
- Deleted 3 dead files: live-control.ts (618 lines), feature-flags.ts, file-type-categories.ts
- Removed typescript.ignoreBuildErrors: true — TS errors now block builds

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

src/server/routers/analytics.ts

@@ -1379,11 +1379,10 @@ export const analyticsRouter = router({
                 bucket: true, objectKey: true, pageCount: true, textPreview: true,
                 detectedLang: true, langConfidence: true, analyzedAt: true,
                 roundId: true,
-                round: { select: { id: true, name: true, roundType: true, sortOrder: true } },
                 requirementId: true,
                 requirement: { select: { id: true, name: true, description: true, isRequired: true } },
               },
-              orderBy: [{ round: { sortOrder: 'asc' } }, { createdAt: 'asc' }],
+              orderBy: [{ createdAt: 'asc' }],
             },
             teamMembers: {
               include: {