feat(tools): Tools settings category + re-detect for supporter binaries (T-495)

ToolsSettingsExtension adds a Tools settings category — a path field per
tool (app.tools.<name>) plus a Re-detect action (tools.detect) — and keeps
the live resolver in sync as paths are edited (supporterBinariesFrom). en
+ nl catalogs. Completes the D-104 UI surface.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

lib/main.dart

@@ -27,6 +27,7 @@ import 'package:clide/builtin/problems/problems.dart';
 import 'package:clide/builtin/settings_ui/settings_ui.dart';
 import 'package:clide/builtin/terminal/terminal.dart';
 import 'package:clide/builtin/theme_picker/theme_picker.dart';
+import 'package:clide/builtin/tools_settings/tools_settings.dart';
 import 'package:clide/builtin/view/view.dart';
 import 'package:clide/builtin/vim/vim.dart';
 import 'package:clide/builtin/tickets/tickets.dart';
@@ -565,6 +566,7 @@ Future<void> main() async {
     ..register(ExtensionsUiExtension())
     ..register(KeybindingsUiExtension())
     ..register(ClaudeControlExtension())
+    ..register(ToolsSettingsExtension())
     ..register(CliInstallExtension());
 
   await services.extensions.activateAll();