Fix UnicodeDecodeError when serving UI on Windows

[PhunkyBob]

Problem

On Windows, Path.read_text() defaults to the system encoding (cp1252). The ui.html file contains characters outside the cp1252 range, causing a UnicodeDecodeError at startup when the UI route was first hit.

UnicodeDecodeError: 'charmap' codec can't decode byte 0x8f in position 16403: character maps to <undefined>

Solution

Explicitly pass encoding="utf-8" to read_text() in the get_ui endpoint so the file is always decoded correctly regardless of the host system's default encoding.

Changed file

src/fs_explorer/server.py — get_ui function, line 90.

How to test

Run uv run uvicorn fs_explorer.server:app --host 127.0.0.1 --port 8000 on a Windows machine and navigate to the UI — no more UnicodeDecodeError.