Fix nginx WebDAV URL encoding and HTTP protocol issues

- Change proxy_pass to preserve original request URI for URL encoding
- Add HTTP/1.1 and Connection header fixes for copyparty compatibility
- Remove path manipulation that broke files with spaces/special characters

Fixes HTTP 400 "bad headers" errors when uploading files with spaces
in filenames via WebDAV clients like X-plore.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

config/nginx/homelab.conf

@@ -58,7 +58,8 @@ server {
         # Explicitly allow WebDAV methods
         limit_except GET POST PUT DELETE PROPFIND PROPPATCH MKCOL COPY MOVE LOCK UNLOCK { deny all; }
         
-        proxy_pass http://127.0.0.1:8082/files$1;
+        # Pass original request URI to preserve URL encoding
+        proxy_pass http://127.0.0.1:8082;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
@@ -84,6 +85,10 @@ server {
         proxy_buffering off;
         proxy_request_buffering off;
         
+        # Critical: Use HTTP/1.1 and fix connection headers
+        proxy_http_version 1.1;
+        proxy_set_header Connection "";
+        
         # Critical: Disable nginx response modifications
         proxy_redirect off;
     }