Feat/deeplink multi endpoints (#597)

* feat(deeplink): support comma-separated multiple endpoints in URL

Allow importing multiple API endpoints via single endpoint parameter.
First URL becomes primary endpoint, rest are added as custom endpoints.

* feat(deeplink): add usage query fields to deeplink generator

Add form fields for usage query configuration in deeplink HTML generator:
- usageEnabled, usageBaseUrl, usageApiKey
- usageScript, usageAutoInterval
- usageAccessToken, usageUserId

* fix(deeplink): auto-infer homepage and improve multi-endpoint display

- Auto-infer homepage from primary endpoint when not provided
- Display multiple endpoints as list in import dialog (primary marked)
- Update deeplink parser in deplink.html to show multi-endpoint info
- Add test for homepage inference from endpoint
- Minor log format fix in live.rs

* fix(deeplink): use primary endpoint for usage script base_url

- Fix usage_script.base_url getting comma-separated string when multiple endpoints
- Add i18n support for primary endpoint label in DeepLinkImportDialog

src/components/DeepLinkImportDialog.tsx

@@ -389,12 +389,27 @@ export function DeepLinkImportDialog() {
                   </div>
 
                   {/* API Endpoint */}
-                  <div className="grid grid-cols-3 items-center gap-4">
-                    <div className="font-medium text-sm text-muted-foreground">
+                  <div className="grid grid-cols-3 items-start gap-4">
+                    <div className="font-medium text-sm text-muted-foreground pt-0.5">
                       {t("deeplink.endpoint")}
                     </div>
-                    <div className="col-span-2 text-sm break-all">
-                      {request.endpoint}
+                    <div className="col-span-2 text-sm break-all space-y-1">
+                      {request.endpoint?.split(",").map((ep, idx) => (
+                        <div
+                          key={idx}
+                          className={
+                            idx === 0 ? "font-medium" : "text-muted-foreground"
+                          }
+                        >
+                          {idx === 0 ? "🔹 " : "└ "}
+                          {ep.trim()}
+                          {idx === 0 && request.endpoint?.includes(",") && (
+                            <span className="text-xs text-muted-foreground ml-2">
+                              ({t("deeplink.primaryEndpoint")})
+                            </span>
+                          )}
+                        </div>
+                      ))}
                     </div>
                   </div>