Unsafe type assertion `xhttp["mode"].(string)` panics when mode is
nil (e.g., when xhttpSettings only contains path without mode). The
panic is caught by Gin's recovery middleware and returned as HTTP 500.
Use comma-ok pattern matching the fix already applied to gRPC's
authority field in 21d98813.
Fixes#3987
Add a createRobustFastHTTPClient helper to configure fasthttp.Client with better timeouts, connection limits, retries and optional SOCKS5 proxy dialing. Validate and sanitize proxy and API server URLs instead of returning early on invalid values, and build telego.Bot options dynamically. Reduce long-polling timeout to detect connection issues faster and adjust update retrieval comments. Implement exponential-backoff retry logic for SendMessage calls to handle transient connection/timeouts and improve delivery reliability; also reduce inter-message delay for better throughput.
Adds a scheduled GitHub Actions workflow (.github/workflows/cleanup_caches.yml) that runs weekly (and via workflow_dispatch) to delete Actions caches not accessed in the last 3 days. The job uses the gh CLI with the repository token and actions: write permission to list caches, filter by last_accessed_at against a 3-day cutoff, and delete matching cache IDs.
* vless: use Inbound Listen address in Subscription service
vless manual connection link and subscription produced connection link are aligned.
subscription service now returns an IP address configured on Inbound, instead of subscription service IP,
which is consistent when the address, returned by QR code for manual vless link distribution.
