Merged in feature/chatbot1 (pull request #223)

Chatbot functionality

* baseline working

* missing test file

* more tests

internal/test/container.go

@@ -74,6 +74,15 @@ func createContainer(t testing.TB, ctx context.Context, network string, cfg *con
 		"RATE_LIMIT_GLOBAL_BURST":  "20000", // 20k burst global (vs 1000 in prod)
 		"RATE_LIMIT_DEFAULT_RATE":  "1000",  // 1k req/s per IP (vs 5 in prod)
 		"RATE_LIMIT_DEFAULT_BURST": "2000",  // 2k burst per IP (vs 10 in prod)
+		// Chatbot config — required+notEmpty per plan §8. Test placeholder
+		// values satisfy the loader and ChatbotConfig.Validate so the
+		// queryAPI container starts; M3 introduces the FastAPI client and
+		// will exercise these values against a real or test FastAPI.
+		"CHATBOT_SERVICE_URL":             "http://chatbot.test:8000",
+		"CHATBOT_API_KEY":                 "test-api-key",
+		"CHATBOT_REQUEST_TIMEOUT_SECONDS": "60",
+		"CHATBOT_MAX_TURN_CHARS":          "2000",
+		"CHATBOT_RECENT_TURNS":            "5",
 	}
 	if cfg.Env != nil {
 		for k, v := range cfg.Env {