feat(theme): map editor_colors to QueryaEditorTheme (#101)

lib/core/theme/parser/querya_editor_theme_from_manifest.dart

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+import 'dart:ui';
+
+import 'package:flutter/foundation.dart';
+
+import '../querya_editor_theme.dart';
+import 'color_parser.dart';
+
+const _knownEditorColorKeys = {
+  'background',
+  'foreground',
+  'lineHighlight',
+  'selection',
+  'lineNumber',
+  'bracketMatch',
+  'widgetBorder',
+  'comment',
+  'keyword',
+  'string',
+  'number',
+  'operator',
+  'function',
+  'type',
+};
+
+/// Builds [QueryaEditorTheme] from Querya custom `editor_colors`.
+///
+/// Missing keys and invalid optional colors fall back to [fallback].
+/// Workbench-related keys in the same map are ignored here (handled separately).
+QueryaEditorTheme editorThemeFromQueryaColors({
+  required Map<String, String> colors,
+  required QueryaEditorTheme fallback,
+}) {
+  if (kDebugMode) {
+    for (final key in colors.keys) {
+      if (!_knownEditorColorKeys.contains(key)) {
+        debugPrint('Querya theme: ignored editor_colors key "$key"');
+      }
+    }
+  }
+
+  Color pick(String key, Color defaultValue) {
+    final raw = colors[key];
+    if (raw == null) return defaultValue;
+    try {
+      return parseQueryaThemeColor(raw);
+    } on FormatException {
+      if (kDebugMode) {
+        debugPrint('Querya theme: invalid editor_colors."$key": $raw');
+      }
+      return defaultValue;
+    }
+  }
+
+  Color? pickOptional(String key, Color? defaultValue) {
+    final raw = colors[key];
+    if (raw == null) return defaultValue;
+    try {
+      return parseQueryaThemeColor(raw);
+    } on FormatException {
+      if (kDebugMode) {
+        debugPrint('Querya theme: invalid editor_colors."$key": $raw');
+      }
+      return defaultValue;
+    }
+  }
+
+  return fallback.copyWith(
+    background: pick('background', fallback.background),
+    foreground: pick('foreground', fallback.foreground),
+    lineHighlight: pick('lineHighlight', fallback.lineHighlight),
+    selection: pick('selection', fallback.selection),
+    lineNumber: pick('lineNumber', fallback.lineNumber),
+    bracketMatch: pick('bracketMatch', fallback.bracketMatch),
+    widgetBorder: pickOptional('widgetBorder', fallback.widgetBorder),
+    comment: pick('comment', fallback.comment),
+    keyword: pick('keyword', fallback.keyword),
+    string: pick('string', fallback.string),
+    number: pick('number', fallback.number),
+    operator: pick('operator', fallback.operator),
+    function: pick('function', fallback.function),
+    type: pick('type', fallback.type),
+  );
+}

test/core/theme/parser/querya_editor_theme_from_manifest_test.dart

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+import 'dart:io';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:querya_desktop/core/theme/parser/color_parser.dart';
+import 'package:querya_desktop/core/theme/parser/querya_editor_theme_from_manifest.dart';
+import 'package:querya_desktop/core/theme/parser/querya_theme_manifest.dart';
+import 'package:querya_desktop/core/theme/querya_theme.dart';
+
+void main() {
+  group('editorThemeFromQueryaColors', () {
+    test('full fixture maps custom editor values', () {
+      final raw =
+          File('test/fixtures/themes/querya_custom_dark.json').readAsStringSync();
+      final manifest = QueryaThemeManifest.fromJsonString(raw);
+      final editor = editorThemeFromQueryaColors(
+        colors: manifest.editorColors,
+        fallback: QueryaTheme.darkDefault.editor,
+      );
+
+      expect(editor.background, parseQueryaThemeColor('#0F1117'));
+      expect(editor.foreground, parseQueryaThemeColor('#E2E8F0'));
+      expect(editor.selection, parseQueryaThemeColor('#264F78'));
+      expect(editor.lineNumber, parseQueryaThemeColor('#64748B'));
+      expect(editor.widgetBorder, parseQueryaThemeColor('#38BDF866'));
+      expect(editor.keyword, parseQueryaThemeColor('#569CD6'));
+    });
+
+    test('minimal fixture falls back for missing editor fields', () {
+      final raw = File('test/fixtures/themes/querya_custom_minimal.json')
+          .readAsStringSync();
+      final manifest = QueryaThemeManifest.fromJsonString(raw);
+      final fallback = QueryaTheme.darkDefault.editor;
+      final editor = editorThemeFromQueryaColors(
+        colors: manifest.editorColors,
+        fallback: fallback,
+      );
+
+      expect(editor.background, parseQueryaThemeColor('#010203'));
+      expect(editor.foreground, fallback.foreground);
+      expect(editor.selection, fallback.selection);
+      expect(editor.comment, fallback.comment);
+      expect(editor.widgetBorder, fallback.widgetBorder);
+    });
+
+    test('invalid optional color uses fallback value', () {
+      final fallback = QueryaTheme.darkDefault.editor;
+      final editor = editorThemeFromQueryaColors(
+        colors: const {
+          'background': '#0F1117',
+          'selection': 'bad-color',
+          'keyword': 'ZZZZZZ',
+        },
+        fallback: fallback,
+      );
+
+      expect(editor.background, parseQueryaThemeColor('#0F1117'));
+      expect(editor.selection, fallback.selection);
+      expect(editor.keyword, fallback.keyword);
+    });
+  });
+}