refactor: remove standalone proxies, add Traefik provider with Docker labels

Standalone proxy removal:
- Delete store, API handlers, proxy manager, health monitor, validator, hints
- Delete frontend pages (proxies list, create, edit) and components (ProxyCard, ProxyForm, ProxyFilter, ProxyGroup, ValidationChecklist)
- Remove proxy routes from router, nav items, dashboard references
- Clean up SystemHealthCard to remove proxy section

Traefik provider:
- Add TraefikProvider implementing proxy.Provider via Docker labels
- ContainerLabels() returns traefik.enable, router rule, entrypoints, service port, TLS cert resolver, docker network
- ConfigureRoute() returns router name (labels handle routing at container creation)
- DeleteRoute() is no-op (container removal auto-deregisters)
- Ping() checks Traefik API health (optional)
- Wire ContainerLabels into deployer (executeDeploy + blueGreenDeploy)
- Add Traefik settings: entrypoint, cert_resolver, network, api_url
- Add traefik option to proxy provider selector in settings UI
- Show conditional Traefik config fields
- Add i18n keys (EN + RU)

web/src/lib/api.ts

@@ -11,15 +11,12 @@ import type {
 	NpmCertificate,
 	Project,
 	ProjectDetail,
-	ProxyView,
 	Registry,
 	RegistryImage,
 	Settings,
 	StaleContainer,
 	Stage,
 	StageEnv,
-	StandaloneProxy,
-	ValidationResult,
 	Volume,
 	VolumeScopeInfo,
 	BrowseResult,
@@ -531,43 +528,6 @@ export function fetchEventLogStats(): Promise<EventLogStats> {
 	return get<EventLogStats>('/api/events/log/stats');
 }
 
-// ── Proxies ─────────────────────────────────────────────────────────
-
-export function validateProxy(host: string, port: number): Promise<ValidationResult> {
-	return post<ValidationResult>('/api/proxies/validate', { host, port });
-}
-
-export function createProxy(data: {
-	domain: string;
-	destination_url: string;
-	destination_port: number;
-}): Promise<StandaloneProxy> {
-	return post<StandaloneProxy>('/api/proxies', data);
-}
-
-export function listProxies(): Promise<StandaloneProxy[]> {
-	return get<StandaloneProxy[]>('/api/proxies');
-}
-
-export function getProxy(id: string): Promise<StandaloneProxy> {
-	return get<StandaloneProxy>(`/api/proxies/${id}`);
-}
-
-export function updateProxy(
-	id: string,
-	data: { domain: string; destination_url: string; destination_port: number }
-): Promise<StandaloneProxy> {
-	return put<StandaloneProxy>(`/api/proxies/${id}`, data);
-}
-
-export function deleteProxy(id: string): Promise<{ deleted: string }> {
-	return del<{ deleted: string }>(`/api/proxies/${id}`);
-}
-
-export function listAllProxies(): Promise<ProxyView[]> {
-	return get<ProxyView[]>('/api/proxies/all');
-}
-
 // ── Stale Containers ────────────────────────────────────────────────
 
 export function fetchStaleContainers(): Promise<StaleContainer[]> {