Refactor admin panel into categorized navigation

frontend/src/stores/awards.ts

@@ -208,6 +208,7 @@ export const useAwardsStore = defineStore('awards', {
     admin: fallbackAdmin as AdminDashboardResponse,
     adminSeasons: fallbackAdminSeasons as AdminSeasonListItem[],
     adminSeasonDetail: fallbackAdminSeasonDetail as AdminSeasonDetailResponse,
+    adminSelectedSeasonId: fallbackAdminSeasonDetail.id as number | null,
     loading: false,
     apiMode: 'fallback' as 'api' | 'fallback',
   }),
@@ -237,22 +238,39 @@ export const useAwardsStore = defineStore('awards', {
       try {
         this.admin = await api.getAdminDashboard()
         this.adminSeasons = await api.getAdminSeasons()
-        this.adminSeasonDetail = await api.getAdminSeasonDetail(this.adminSeasons[0]?.id ?? 1)
+        if (!this.adminSelectedSeasonId || !this.adminSeasons.some((season) => season.id === this.adminSelectedSeasonId)) {
+          this.adminSelectedSeasonId = this.adminSeasons[0]?.id ?? null
+        }
+
+        if (this.adminSelectedSeasonId) {
+          this.adminSeasonDetail = await api.getAdminSeasonDetail(this.adminSelectedSeasonId)
+        }
         this.apiMode = 'api'
       } catch {
         this.admin = emptyAdmin
         this.adminSeasons = emptyAdminSeasons
         this.adminSeasonDetail = emptyAdminSeasonDetail
+        this.adminSelectedSeasonId = null
       }
     },
     async loadAdminSeasonDetail(seasonId: number) {
       try {
+        this.adminSelectedSeasonId = seasonId
         this.adminSeasonDetail = await api.getAdminSeasonDetail(seasonId)
         this.apiMode = 'api'
       } catch {
         this.adminSeasonDetail = emptyAdminSeasonDetail
       }
     },
+    async initializeAdminWorkspace() {
+      await this.loadAdmin()
+      if (this.adminSelectedSeasonId && this.adminSeasonDetail.id !== this.adminSelectedSeasonId) {
+        await this.loadAdminSeasonDetail(this.adminSelectedSeasonId)
+      }
+    },
+    setAdminSeason(seasonId: number) {
+      this.adminSelectedSeasonId = seasonId
+    },
     submitNomination(payload: CreateNominationPayload) {
       return api.submitNomination(payload)
     },