v0.1.27

Changes

• Default HTTP prefix changed from /vgi to "" (root). Endpoints now live at the root by default (e.g. /bind, /init). Users who need a prefix can still pass --prefix /vgi.
• Client functions (http_connect, http_capabilities, etc.) now auto-detect prefix from _SyncTestClient.prefix when not explicitly passed.
• CI lint job now runs before tests for faster failure feedback.