Fix a bug in the response header in the file route.

LocalShare is a lightweight Android app to share files over your local network via a browser - no cloud, no cables, no extra apps required. Features - Share files directly via the Android share sheet - Access files through a clean browser-based web interface - Live-updating web interface for the receiver (no refresh needed) - Stream video/audio with seeking support (HTTP Range) - Share multiple files or download as ZIP (on-the-fly) - Token-based access + optional device approval - 100% ad-free & open source Quick Start 1. Share files to LocalShare 2. Tap Start Sharing 3. Open the shown URL (or scan QR code) on another device 4. Download or stream Security LocalShare is designed for trusted local networks only (e.g. your home Wi-Fi). Avoid using it on public or untrusted networks, especially for sensitive data. ⚠️ Important Files are transferred over plain HTTP. License GNU General Public License v3.0