Improve admin candidate modal UX and add clip menu visibility toggle

- Widen AdminCandidateEditorModal to size lg for better readability
- Rename "Clip-Compilation" section to "Clip / Compilation", update copy to reflect single clips too, drop upload hint and Clip-Plattform field, rename label to "Link"
- Fix NativeSelect dropdown clipping inside overflow-y-auto modals by teleporting the menu to body with fixed positioning, flip-up logic, and dynamic maxHeight capped to viewport
- Add ClipAdminMenuVisible setting (backend domain, contracts, endpoint, migration) with matching frontend types, defaults, form wiring, and toggle in the Clip-Workflow modal — hides the Clips nav item from the admin sidebar when disabled

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

Backend/Contracts/AdminModerationContracts.cs

@@ -91,6 +91,14 @@ public sealed record ApproveNominationRequest(
 
 public sealed record RejectNominationRequest(string? ReviewNote);
 
+public sealed record AdminNominationLinkBlacklistEntryDto(string Url);
+
+public sealed record AdminNominationLinkBlacklistResponse(AdminNominationLinkBlacklistEntryDto[] Entries);
+
+public sealed record UpdateNominationLinkBlacklistRequest(string[] Urls);
+
+public sealed record AddNominationLinkBlacklistEntryRequest(string Url);
+
 public sealed record UpdateClipStatusRequest(
     string Status,
     string? ReviewNote);
@@ -116,3 +124,15 @@ public sealed record AdminRiskRuleDto(
 public sealed record AdminRiskRulesResponse(AdminRiskRuleDto[] Rules);
 
 public sealed record UpdateRiskRulesRequest(AdminRiskRuleDto[] Rules);
+
+public sealed record AdminWorkflowRuleDto(
+    string Key,
+    string Label,
+    bool Enabled,
+    int Limit,
+    string Mode,
+    string Description);
+
+public sealed record AdminWorkflowRulesResponse(AdminWorkflowRuleDto[] Rules);
+
+public sealed record UpdateWorkflowRulesRequest(AdminWorkflowRuleDto[] Rules);

Backend/Contracts/AdminSeasonContracts.cs

@@ -23,7 +23,13 @@ public sealed record AdminCandidateItemDto(
     int CategoryId,
     string DisplayName,
     string ChannelSlug,
-    string Platform);
+    string Platform,
+    string AcceptanceStatus,
+    string? AcceptanceNote,
+    string? ClipCompilationUrl,
+    string? ClipCompilationTitle,
+    string? ClipCompilationPlatform,
+    string ClipEmbedStatus);
 
 public sealed record AdminAwardResultItemDto(
     int Id,
@@ -102,7 +108,13 @@ public sealed record UpsertCandidateRequest(
     int CategoryId,
     string DisplayName,
     string ChannelSlug,
-    string Platform);
+    string Platform,
+    string? AcceptanceStatus = null,
+    string? AcceptanceNote = null,
+    string? ClipCompilationUrl = null,
+    string? ClipCompilationTitle = null,
+    string? ClipCompilationPlatform = null,
+    string? ClipEmbedStatus = null);
 
 public sealed record SetAwardResultRequest(
     int CategoryId,

Backend/Contracts/AdminSiteSettingsContracts.cs

@@ -14,6 +14,8 @@ public sealed record AdminSiteSettingsResponse(
     string ContactContent,
     string SponsorsUrl,
     string SponsorsContent,
+    string ShowactsUrl,
+    string ShowactsContent,
     IEnumerable<PublicSocialLinkDto> SocialLinks,
     IEnumerable<FaqItemDto> Faq);
 
@@ -29,6 +31,8 @@ public sealed record UpdateSiteSettingsRequest(
     string ContactContent,
     string SponsorsUrl,
     string SponsorsContent,
+    string ShowactsUrl,
+    string ShowactsContent,
     PublicSocialLinkDto[] SocialLinks,
     FaqItemDto[] Faq);
 
@@ -49,6 +53,24 @@ public sealed record AdminOperationalSettingsResponse(
     string MaintenanceTitle,
     string MaintenanceMessage);
 
+public sealed record AdminOptionalFeatureSettingsResponse(
+    bool ClipSubmissionsEnabled,
+    bool ClipReviewEnabled,
+    bool ClipAdminMenuVisible,
+    string ClipSubmissionDisabledMessage,
+    bool ShowactApplicationsEnabled,
+    string ShowactApplicationDisabledMessage,
+    bool SponsorsVisible);
+
+public sealed record UpdateOptionalFeatureSettingsRequest(
+    bool ClipSubmissionsEnabled,
+    bool ClipReviewEnabled,
+    bool ClipAdminMenuVisible,
+    string ClipSubmissionDisabledMessage,
+    bool ShowactApplicationsEnabled,
+    string ShowactApplicationDisabledMessage,
+    bool SponsorsVisible);
+
 public sealed record UpdateOperationalSettingsRequest(
     bool DemoLoginEnabled,
     string DemoLoginEmail,

Backend/Contracts/ExtrasContracts.cs

@@ -0,0 +1,51 @@
+namespace Backend.Contracts;
+
+public sealed record SponsorDto(
+    int Id,
+    int SeasonId,
+    string Name,
+    string WebsiteUrl,
+    string LogoUrl,
+    string Description,
+    string Tier,
+    int SortOrder,
+    bool IsVisible);
+
+public sealed record PublicSponsorsResponse(int Year, SponsorDto[] Items);
+
+public sealed record UpsertSponsorRequest(
+    string Name,
+    string WebsiteUrl,
+    string LogoUrl,
+    string Description,
+    string Tier,
+    int SortOrder,
+    bool IsVisible);
+
+public sealed record ShowactApplicationDto(
+    int Id,
+    int SeasonId,
+    string ArtistName,
+    string ContactEmail,
+    string ContactDiscord,
+    string PlatformUrl,
+    string PerformanceType,
+    string Description,
+    string TechnicalNotes,
+    string ReferenceUrl,
+    string Status,
+    string? ReviewNote,
+    DateTimeOffset CreatedAt,
+    DateTimeOffset? ReviewedAt);
+
+public sealed record CreateShowactApplicationRequest(
+    string ArtistName,
+    string ContactEmail,
+    string ContactDiscord,
+    string PlatformUrl,
+    string PerformanceType,
+    string Description,
+    string TechnicalNotes,
+    string ReferenceUrl);
+
+public sealed record UpdateShowactStatusRequest(string Status, string? ReviewNote);

Backend/Contracts/PublicOverviewContracts.cs

@@ -20,7 +20,11 @@ public sealed record WinnerPreviewDto(
     string WinnerName,
     string WinnerSlug,
     string WinnerPlatform,
-    string WinnerUrl);
+    string WinnerUrl,
+    string? ClipUrl,
+    string? ClipTitle,
+    string? ClipPlatform,
+    string? ClipEmbedStatus);
 
 public sealed record ArchiveYearDto(
     int Year,
@@ -57,6 +61,14 @@ public sealed record PublicSiteStatusResponse(
     string MaintenanceTitle,
     string MaintenanceMessage);
 
+public sealed record PublicFeatureFlagsDto(
+    bool ClipSubmissionsEnabled,
+    bool ClipReviewEnabled,
+    string ClipSubmissionDisabledMessage,
+    bool ShowactApplicationsEnabled,
+    string ShowactApplicationDisabledMessage,
+    bool SponsorsVisible);
+
 public sealed record OverviewResponse(
     int SeasonId,
     int Year,
@@ -72,4 +84,5 @@ public sealed record OverviewResponse(
     IEnumerable<WinnerPreviewDto> WinnersPreview,
     IEnumerable<ArchiveYearDto> ArchiveYears,
     PublicSiteContentDto SiteContent,
+    PublicFeatureFlagsDto FeatureFlags,
     IEnumerable<FaqItemDto> Faq);

Backend/Contracts/PublicSeasonCategoryContracts.cs

@@ -4,10 +4,12 @@ public sealed record CandidateSummaryDto(
     int Id,
     string DisplayName,
     string ChannelSlug,
+    string ChannelUrl,
     string Platform,
     string? ClipUrl,
     string? ClipTitle,
-    string? ClipPlatform);
+    string? ClipPlatform,
+    string? ClipEmbedStatus);
 
 public sealed record PublicCategoryDetailDto(
     int Id,

Backend/Contracts/PublicWinnerArchiveContracts.cs

@@ -5,7 +5,11 @@ public sealed record WinnerArchiveItemDto(
     string WinnerName,
     string WinnerSlug,
     string WinnerPlatform,
-    string WinnerUrl);
+    string WinnerUrl,
+    string? ClipUrl,
+    string? ClipTitle,
+    string? ClipPlatform,
+    string? ClipEmbedStatus);
 
 public sealed record WinnerArchiveResponse(
     int Year,