Rollup of builds 156-158 since v1.0-build155. Default behavior is unchanged for existing users; the Legacy / SRTP / SRTP+WRAP / SRTP-WRAP-A transports are unaffected.
build 156 — TURN server override
Optional Settings field "TURN server (IP:port)". When set, the app forces fresh connections onto the chosen relay; disk-cached credentials keep their stored address. Empty = use whatever VK returns.
build 157 — wdtt:// connection links
Import amurcanov's proxy-turn-vk-android links directly into SRTP-WRAP-A mode: copy a wdtt:// link to the clipboard, then Settings -> "Import from Connection Link...". (For these links, paste is the supported path; tapping is unreliable.) Compatibility with @amurcanov's server: https://github.com/amurcanov/proxy-turn-vk-android
build 158 — Settings field validation
Inline per-field hints (red = required/invalid, orange = format warning), and the Connect button is blocked when a required field for the active server mode is empty or invalid.