Fix manage_asset error handling to use ctx.error

Changed ctx.warning to ctx.error for property parse errors in manage_asset
tool to properly handle error cases. This ensures parse errors are reported
as errors rather than warnings, and fixes compatibility with FastMCP Context API.

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

Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: dsarno

Server/src/services/tools/manage_asset.py

@@ -80,7 +80,7 @@ async def _normalize_properties(raw: dict[str, Any] | str | None) -> tuple[dict[
 
     properties, parse_error = await _normalize_properties(properties)
     if parse_error:
-        await ctx.warning(parse_error)
+        await ctx.error(parse_error)
         return {"success": False, "message": parse_error}
 
     # Coerce numeric inputs defensively