test(guards): no empty catch blocks in lib/features and lib/shared (#1763)

test/guards/no_silent_catch_test.dart

@@ -0,0 +1,54 @@
+import 'dart:io';
+
+import 'package:flutter_test/flutter_test.dart';
+
+/// Error-handling epic (#1764, #1763): a `catch` in the UI layer must do
+/// something with the error: `logIgnored`, the reporting helpers, a rethrow or
+/// a real fallback. An empty block (or one that holds only a comment) hides a
+/// failure from both the user and the log.
+///
+/// The files below keep a few empty blocks on purpose: they try to parse a
+/// value in a second form and fall back, so the failure is the control flow.
+/// The number is exact, so removing one of them has to lower it here too.
+void main() {
+  const allowed = {
+    'lib/features/mongodb/mongo_field_codec.dart': 1,
+    'lib/features/mongodb/mql_parser.dart': 1,
+    'lib/features/workspace/data_grid_value_panel.dart': 6,
+  };
+
+  final emptyCatch = RegExp(
+    r'catch\s*\([^)]*\)\s*\{(?:\s|//[^\n]*|/\*[\s\S]*?\*/)*\}',
+  );
+
+  String norm(File f) => f.path.replaceAll(r'\', '/');
+
+  test('lib/features and lib/shared have no empty catch blocks', () {
+    final counts = <String, int>{};
+    for (final dir in ['lib/features', 'lib/shared']) {
+      for (final e in Directory(dir).listSync(recursive: true)) {
+        if (e is! File || !e.path.endsWith('.dart')) continue;
+        final n = emptyCatch.allMatches(e.readAsStringSync()).length;
+        if (n > 0) counts[norm(e)] = n;
+      }
+    }
+
+    final problems = <String>[];
+    for (final entry in counts.entries) {
+      final expected = allowed[entry.key] ?? 0;
+      if (entry.value > expected) {
+        problems.add('${entry.key}: ${entry.value} empty catch blocks '
+            '(allowed $expected): call logIgnored(where, e, st) or report it');
+      }
+    }
+    for (final entry in allowed.entries) {
+      final actual = counts[entry.key] ?? 0;
+      if (actual < entry.value) {
+        problems.add('${entry.key}: ${entry.value} allowed but only $actual '
+            'left: lower the number in this test');
+      }
+    }
+
+    expect(problems, isEmpty, reason: problems.join('\n'));
+  });
+}