Align Remnawave config with official docs and fix admin health check

internal/remnawave/client.go

@@ -10,24 +10,32 @@ import (
 	"time"
 )
 
+// Client обращается к Remnawave Panel API:
+//   - Base: REMNAWAVE_PANEL_URL (например https://panel.example.com)
+//   - Auth: Authorization: Bearer REMNAWAVE_API_TOKEN
+//   - Опционально: X-Api-Key: CADDY_AUTH_API_TOKEN
+// Документация: https://docs.rw/docs/install/subscription-page/bundled
+
 type Client struct {
-	baseURL    string
+	panelURL   string
 	token      string
 	caddyToken string
 	http       *http.Client
 }
 
-func NewClient(baseURL, apiToken, caddyToken string) *Client {
+func NewClient(panelURL, apiToken, caddyAuthToken string) *Client {
 	return &Client{
-		baseURL:    strings.TrimRight(baseURL, "/"),
+		panelURL:   strings.TrimRight(panelURL, "/"),
 		token:      apiToken,
-		caddyToken: caddyToken,
+		caddyToken: caddyAuthToken,
 		http: &http.Client{
 			Timeout: 15 * time.Second,
 		},
 	}
 }
 
+func (c *Client) PanelURL() string { return c.panelURL }
+
 func (c *Client) countFromEndpoint(ctx context.Context, path, arrayKey string) (int, error) {
 	resp, body, err := c.get(ctx, path)
 	if err != nil {
@@ -40,13 +48,23 @@ func (c *Client) countFromEndpoint(ctx context.Context, path, arrayKey string) (
 }
 
 func (c *Client) get(ctx context.Context, path string) (*http.Response, []byte, error) {
-	req, err := http.NewRequestWithContext(ctx, http.MethodGet, c.baseURL+path, nil)
+	return c.doRequest(ctx, c.panelURL+path, true)
+}
+
+func (c *Client) getPublic(ctx context.Context, path string) (*http.Response, []byte, error) {
+	return c.doRequest(ctx, c.panelURL+path, false)
+}
+
+func (c *Client) doRequest(ctx context.Context, url string, withBearer bool) (*http.Response, []byte, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return nil, nil, err
 	}
 
-	req.Header.Set("Authorization", "Bearer "+c.token)
-	req.Header.Set("Accept", "application/json")
+	req.Header.Set("Accept", "application/json, text/html, */*")
+	if withBearer {
+		req.Header.Set("Authorization", "Bearer "+c.token)
+	}
 	if c.caddyToken != "" {
 		req.Header.Set("X-Api-Key", c.caddyToken)
 	}