Plugin: reload config live and always log HUD changes

BepInEx does not pick up external edits to a plugin's .cfg, so tuning values
while the game ran silently did nothing - the plugin kept the values loaded at
startup. Now watches the config file's mtime and calls Config.Reload() when it
changes, so edits apply within ~2s with no restart. Reload is wrapped in
try/catch so a malformed .cfg warns instead of spamming exceptions.

HUD adjustments now always log (not just under Verbose) with the resulting
scale, so it is obvious whether a value took effect.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

games/BurglinGnomes/plugin/UltraWideFix.cs

@@ -80,14 +80,38 @@ namespace BurglinGnomes.UltraWideFix
         private void Start() => Apply();
 
         // Canvases are created lazily (menus, popups), so re-apply periodically.
+        // We also re-read the config file each tick: BepInEx does NOT pick up
+        // external edits on its own, so without this you'd have to restart the
+        // game after every tweak.
         private void Update()
         {
             _timer += Time.unscaledDeltaTime;
             if (_timer < 2f) return;
             _timer = 0f;
+
+            try
+            {
+                var stamp = System.IO.File.GetLastWriteTimeUtc(Config.ConfigFilePath);
+                if (stamp != _configStamp)
+                {
+                    _configStamp = stamp;
+                    Config.Reload();
+                    Logger.LogInfo($"Config reloaded: HudScale={_hudScale.Value} " +
+                                   $"WorldLabelScale={_worldScale.Value} " +
+                                   $"Match={_match.Value} Enabled={_enabled.Value}");
+                    // values changed -> re-derive from baselines on this pass
+                }
+            }
+            catch (System.Exception e)
+            {
+                Logger.LogWarning($"Config reload failed (check the .cfg syntax): {e.Message}");
+            }
+
             Apply();
         }
 
+        private System.DateTime _configStamp;
+
         private void Apply()
         {
             if (!_enabled.Value) return;
@@ -132,9 +156,11 @@ namespace BurglinGnomes.UltraWideFix
                 if (cs.referenceResolution != targetRef)
                 {
                     cs.referenceResolution = targetRef;
-                    if (_verbose.Value)
-                        Logger.LogInfo($"HUD '{cs.name}' ref {baseRef} -> {targetRef} " +
-                                       $"match={_match.Value}");
+                    // expected scale now; Canvas.scaleFactor lags a frame
+                    float exp = Mathf.Pow(Screen.width / targetRef.x, 1f - _match.Value) *
+                                Mathf.Pow(Screen.height / targetRef.y, _match.Value);
+                    Logger.LogInfo($"HUD '{cs.name}' ref {baseRef} -> {targetRef} " +
+                                   $"match={_match.Value} => scale={exp:F3}");
                 }
             }
         }