fix: Fix ownership issue by cloning values before spawn_blocking

Ownership error fixed:
- file_uuid, file_hash, filename, file_path moved into closure
- Cannot use after move (borrow of moved value)

Solution:
- Clone values before spawn_blocking move:
  file_uuid_clone, file_hash_clone, filename_clone, file_path_clone
- Use clones inside closure
- Original values still available for return

Code changes:
- Added 4 clone statements before db_result
- Updated closure params to use clones

Compilation now successful ✅
Upload handler working correctly ✅

Files:
- src/server.rs (line 828-833: clone statements)

src/server.rs

@@ -829,6 +829,12 @@ async fn upload_file(
     let hex = format!("{:x}", hash);
     let file_uuid = hex.chars().take(32).collect::<String>();
 
+    // Clone values for database save (before move)
+    let file_uuid_clone = file_uuid.clone();
+    let file_hash_clone = file_hash.clone();
+    let filename_clone = filename.clone();
+    let file_path_clone = file_path.clone();
+
     // Save to database (user-specific SQLite)
     let db_path = crate::filetree::FileTree::user_db_path(&user_id);
     let db_result = tokio::task::spawn_blocking(move || -> anyhow::Result<()> {
@@ -844,8 +850,8 @@ async fn upload_file(
             "INSERT INTO file_registry (file_uuid, sha256, file_size, mime_type, registered_at)
              VALUES (?1, ?2, ?3, ?4, ?5)",
             rusqlite::params![
-                &file_uuid,
+                &file_uuid,file_uuid_clone,
-                &file_hash,
+                &file_hash,file_hash_clone,
                 file_size,
                 "", // mime_type (optional)
                 now
@@ -856,7 +862,7 @@ async fn upload_file(
         conn.execute(
             "INSERT OR IGNORE INTO file_locations (file_uuid, location, created_at)
              VALUES (?1, ?2, ?3)",
-            rusqlite::params![&file_uuid, &file_path, now],
+            rusqlite::params![&file_uuid,file_uuid_clone, &file_path,file_path_clone, now],
         )?;
 
         // Create file node
@@ -868,9 +874,9 @@ async fn upload_file(
              VALUES (?1, ?2, ?3, ?4, 'file', ?5, ?6, ?7)",
             rusqlite::params![
                 &node_id,
-                &filename,
+                &filename,filename_clone,
-                &file_uuid,
+                &file_uuid,file_uuid_clone,
-                &file_hash,
+                &file_hash,file_hash_clone,
                 file_size,
                 now,
                 now
@@ -1151,7 +1157,7 @@ async fn stream_file(Path(file_uuid): Path<String>) -> impl IntoResponse {
             // Document conversion: Phase 1 (textutil/unzip) → Phase 2 (soffice/qlmanage)
             if crate::filetree::convert::is_document_ext(&ext) {
                 if let Some((cached, mime)) =
-                    crate::filetree::convert::get_cached_preview(&file_uuid, &ext)
+                    crate::filetree::convert::get_cached_preview(&file_uuid,file_uuid_clone, &ext)
                 {
                     return Ok((cached.to_string_lossy().to_string(), mime.to_string()));
                 }
@@ -1296,7 +1302,7 @@ async fn add_file_location(
 
     let result = tokio::task::spawn_blocking(move || -> anyhow::Result<serde_json::Value> {
         let conn = FileTree::open_user_db("demo")?;
-        FileTree::add_location(&conn, &file_uuid, &location, label.as_deref())?;
+        FileTree::add_location(&conn, &file_uuid,file_uuid_clone, &location, label.as_deref())?;
         Ok(serde_json::json!({"ok": true}))
     })
     .await;