feat: applicant dashboard — team cards, editable description, feedback visibility

- Replace flat team names list with proper cards showing roles and badges
- Hide TeamMembers from metadata display, remove Withdraw from header
- Add inline-editable project description (admin-toggleable setting)
- Move applicant feedback visibility from per-round config to admin settings
- Support EVALUATION, LIVE_FINAL, DELIBERATION round types in feedback
- Backwards-compatible: falls back to old per-round config if no settings exist
- Add observer team tab toggle and 10 new SystemSettings seed entries

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

prisma/seed.ts

@@ -927,6 +927,7 @@ async function main() {
     { key: 'applicant_show_livefinal_scores', value: 'false', type: SettingType.BOOLEAN, category: SettingCategory.ANALYTICS, description: 'Show individual jury scores from live finals' },
     { key: 'applicant_show_deliberation_feedback', value: 'false', type: SettingType.BOOLEAN, category: SettingCategory.ANALYTICS, description: 'Show deliberation results to applicants' },
     { key: 'applicant_hide_feedback_from_rejected', value: 'false', type: SettingType.BOOLEAN, category: SettingCategory.ANALYTICS, description: 'Hide feedback from rejected projects' },
+    { key: 'applicant_allow_description_edit', value: 'false', type: SettingType.BOOLEAN, category: SettingCategory.ANALYTICS, description: 'Allow applicants to edit their project description' },
   ]
   for (const s of visibilitySettings) {
     await prisma.systemSettings.upsert({