refactor: remove Gorse integration and implement HotRank feature

- Removed Gorse-related configurations, handlers, and dependencies from the codebase.
- Introduced HotRank feature with configuration options for ranking posts based on recent activity.
- Updated application structure to support HotRank processing, including new caching mechanisms and database interactions.
- Cleaned up related DTOs and repository methods to reflect the removal of Gorse and the addition of HotRank functionality.

.gitea/workflows/deploy.yml

@@ -34,7 +34,8 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     if: ${{ (github.event.pull_request.merged == true) || (github.event_name == 'workflow_dispatch') }}
-    environment: production
+    # workflow_dispatch 可选 staging；合并进主分支默认 production
+    environment: ${{ github.event.inputs.environment || 'production' }}
     steps:
       - name: Deploy via SSH
         uses: appleboy/ssh-action@v1.0.3
@@ -84,12 +85,12 @@ jobs:
               -e APP_ENCRYPTION_ENABLED=true \
               -e "APP_ENCRYPTION_KEY=${{ secrets.ENCRYPTION_KEY }}" \
               -e APP_ENCRYPTION_KEY_VERSION=1 \
-              -e APP_GORSE_ENABLED=true \
-              -e APP_GORSE_ADDRESS=http://111.170.19.33:8088 \
-              -e "APP_GORSE_IMPORT_PASSWORD=${{ secrets.GORSE_IMPORT_PASSWORD }}" \
-              -e "APP_GORSE_EMBEDDING_API_KEY=${{ secrets.GORSE_EMBEDDING_API_KEY }}" \
-              -e APP_GORSE_EMBEDDING_URL=https://api.littlelan.cn/v1/embeddings \
-              -e APP_GORSE_EMBEDDING_MODEL=BAAI/bge-m3 \
+              -e APP_HOT_RANK_ENABLED=true \
+              -e APP_HOT_RANK_REFRESH_INTERVAL_SECONDS=300 \
+              -e APP_HOT_RANK_TOP_N=100 \
+              -e APP_HOT_RANK_RECENT_WINDOW_HOURS=168 \
+              -e APP_HOT_RANK_RECENT_FETCH_LIMIT=500 \
+              -e APP_HOT_RANK_CANDIDATE_CAP=800 \
               -e APP_OPENAI_ENABLED=true \
               -e APP_OPENAI_BASE_URL=https://api.littlelan.cn/ \
               -e "APP_OPENAI_API_KEY=${{ secrets.OPENAI_API_KEY }}" \