fix: isolate dev messages from production

tests/test_release_help.py

@@ -27,8 +27,9 @@ class DeployNoticeTests(unittest.IsolatedAsyncioTestCase):
 
     async def test_does_not_send_outside_development(self):
         fake_bot = AsyncMock()
-        with patch.object(bot, "DEPLOY_ENV", "production"):
-            await bot.notify_development_deploy(fake_bot)
+        for env in ("production", "", "staging", "Development", " development"):
+            with self.subTest(env=env), patch.object(bot, "DEPLOY_ENV", env):
+                await bot.notify_development_deploy(fake_bot)
         fake_bot.send_message.assert_not_awaited()
 
     async def test_deploy_notice_does_not_block_if_test_api_hangs(self):
@@ -43,6 +44,39 @@ class DeployNoticeTests(unittest.IsolatedAsyncioTestCase):
         fake_bot.send_message.assert_awaited_once()
 
 
+class UserFacingErrorTests(unittest.IsolatedAsyncioTestCase):
+    async def test_production_error_is_generic_without_exception_details(self):
+        message = AsyncMock()
+        with patch.object(bot, "DEPLOY_ENV", "production"):
+            await bot.report_error(message, "генерация поста", RuntimeError("internal detail"))
+        message.answer.assert_awaited_once()
+        self.assertNotIn("internal detail", message.answer.await_args.args[0])
+
+    async def test_development_error_details_are_a_separate_message(self):
+        message = AsyncMock()
+        with patch.object(bot, "DEPLOY_ENV", "development"):
+            await bot.report_error(message, "генерация поста", RuntimeError("internal detail"))
+        self.assertEqual(message.answer.await_count, 2)
+        self.assertNotIn("internal detail", message.answer.await_args_list[0].args[0])
+        diagnostic = message.answer.await_args_list[1]
+        self.assertIn("Dev-диагностика", diagnostic.args[0])
+        self.assertIn("internal detail", diagnostic.args[0])
+
+    async def test_unknown_environment_does_not_send_developer_diagnostics(self):
+        message = AsyncMock()
+        with patch.object(bot, "DEPLOY_ENV", "staging"):
+            await bot.report_error(message, "генерация поста", RuntimeError("internal detail"))
+        message.answer.assert_awaited_once()
+        self.assertNotIn("internal detail", message.answer.await_args.args[0])
+
+    async def test_missing_environment_disables_developer_diagnostics(self):
+        message = AsyncMock()
+        with patch.object(bot, "DEPLOY_ENV", ""):
+            await bot.report_error(message, "генерация поста", RuntimeError("internal detail"))
+        message.answer.assert_awaited_once()
+        self.assertNotIn("internal detail", message.answer.await_args.args[0])
+
+
 
 class HelpRoutingTests(unittest.TestCase):
     def test_commands_are_routed_in_command_handler(self):