Adds support ticket integration, for easy app support.

Fixes and polish for the door. • Fixed: on events with per-date ticket types, the date list could sit on “Loading dates…” for good, and no dated ticket could be sold. Dates now load as soon as the sell screen opens, with a Try again if the network dips. • New: a Clear button in the basket bar empties a wrong basket in one step — items, picked seats and any donation — behind a confirmation that spells out what goes and what stays. • Scanning a ticket on the pairing screen used to do nothing at all. The screen now says it’s a ticket rather than a pairing code, with a buzz and a spoken announcement. • The allow and deny marks on a scan verdict are drawn rather than typed: a clear tick or cross that reads at arm’s length in the dark, so the verdict no longer rests on colour alone. The paid mark on a completed sale matches it. • The app version and build number now sit under the “Powered by frequentix” footer on the pairing and Session screens, so a support call can start with an answer. • Event picker: the Current badge sits above the event name, long names wrap in full, and rows no longer shift under your finger as you tap them. • The chosen date’s calendar icon is legible on the card now, in both light and dark.