fix: correct test assertions and database foreign key references

Co-authored-by: aider (openai/andrew/openrouter/qwen/qwen3-coder) <aider@aider.chat>

src/tests/db/meta_tests.rs

@@ -13,9 +13,18 @@ mod tests {
         // Open the database
         let conn = db::open(db_path).expect("Failed to open database");
         
-        // Create a test meta
+        // First insert an item to have a valid ID
+        let item = crate::db::Item {
+            id: None,
+            ts: chrono::Utc::now(),
+            size: Some(100),
+            compression: crate::compression_engine::CompressionType::None.to_string(),
+        };
+        let item_id = db::insert_item(&conn, item).expect("Failed to insert item");
+        
+        // Create a test meta with the valid item ID
         let meta = Meta {
-            id: 1,
+            id: item_id,
             name: "test_key".to_string(),
             value: "test_value".to_string(),
         };