chore(config): update speaches config and ignore sveltekit dashboard

- Simplified .env.example to use localhost SPEACHES_URL
- Removed unused prod_url from SpeachesSettings config
- Added dashboard node_modules and build dirs to .gitignore
- Streamlines local development setup

dashboard/src/lib/api.ts

@@ -0,0 +1,50 @@
+import type { CallSummary, DeviceStatus, GatewayEvent, GatewayStatus, HealthStatus } from './types';
+
+async function get<T>(path: string): Promise<T> {
+	const res = await fetch(path);
+	if (!res.ok) throw new Error(`${res.status} ${res.statusText}`);
+	return res.json() as Promise<T>;
+}
+
+export async function fetchGatewayStatus(): Promise<GatewayStatus> {
+	return get<GatewayStatus>('/');
+}
+
+export async function fetchHealth(): Promise<HealthStatus> {
+	return get<HealthStatus>('/health');
+}
+
+export async function fetchActiveCalls(): Promise<CallSummary[]> {
+	return get<CallSummary[]>('/api/calls/active');
+}
+
+export async function fetchDevices(): Promise<DeviceStatus[]> {
+	return get<DeviceStatus[]>('/api/devices');
+}
+
+export async function hangupCall(callId: string): Promise<void> {
+	const res = await fetch(`/api/calls/${callId}/hangup`, { method: 'POST' });
+	if (!res.ok) throw new Error(`${res.status} ${res.statusText}`);
+}
+
+export function connectEventStream(
+	onEvent: (e: GatewayEvent) => void,
+	onClose: () => void,
+): () => void {
+	const proto = location.protocol === 'https:' ? 'wss:' : 'ws:';
+	const ws = new WebSocket(`${proto}//${location.host}/ws/events`);
+
+	ws.onmessage = (msg) => {
+		try {
+			const event = JSON.parse(msg.data as string) as GatewayEvent;
+			onEvent(event);
+		} catch {
+			// malformed frame — ignore
+		}
+	};
+
+	ws.onclose = () => onClose();
+	ws.onerror = () => onClose();
+
+	return () => ws.close();
+}