feat: Implement new bot architecture including handlers, services, analysis modules, and comprehensive tests.

tests/test_bot_basic_handler.py

@@ -0,0 +1,55 @@
+from types import SimpleNamespace
+
+from src.bot.handlers.basic import BasicCommandHandler
+from src.bot.runtime_coordinator import RuntimeStatus
+
+
+class DummyBot:
+    def __init__(self):
+        self.replies = []
+
+    def reply_to(self, message, text, parse_mode=None):
+        self.replies.append({"text": text, "parse_mode": parse_mode, "chat_id": message.chat.id})
+
+    def send_message(self, chat_id, text, parse_mode=None):  # pragma: no cover
+        pass
+
+    def message_handler(self, *args, **kwargs):  # pragma: no cover - decorator stub
+        def _decorator(func):
+            return func
+
+        return _decorator
+
+
+def _message(text: str):
+    return SimpleNamespace(
+        text=text,
+        from_user=SimpleNamespace(id=1, username="u", first_name="U"),
+        chat=SimpleNamespace(id=100),
+    )
+
+
+def test_basic_handler_diag_returns_html():
+    runtime = RuntimeStatus(
+        started_at="2026-03-12 00:00:00 UTC",
+        loops=[],
+        entitlement_enabled=False,
+        protected_commands=["/city", "/deb"],
+    )
+    bot = DummyBot()
+    io_layer = SimpleNamespace(
+        build_welcome_text=lambda: "WELCOME",
+        build_points_rank_text=lambda _user: "TOP",
+    )
+    handler = BasicCommandHandler(
+        bot=bot,
+        io_layer=io_layer,
+        runtime_status_provider=lambda: runtime,
+    )
+
+    handler.handle_diag(_message("/diag"))
+
+    assert len(bot.replies) == 1
+    assert bot.replies[0]["parse_mode"] == "HTML"
+    assert "Bot 启动诊断" in bot.replies[0]["text"]
+