GunterChart v0.216-alpha (build216)

Build216 corrects drawing popup positioning, fill palette toggle/selection behaviour and opacity-slider native release/same-size chart-refresh handling. Drawing-only handles now use native bitmap time/price anchors shared with their parent objects, preserving the existing artwork and stored geometry. This is a contract-supported structural correction; exact native pixel/DPI alignment remains for owner acceptance. Choosing fill colour preserves opacity, including zero. Escape, modifiers, actual resize and update pause still cancel slider edits. Helper21 is unchanged; the installer contains the exact previously published Helper21 and pinned channel. No new Helper release or replacement assets. Update from the app chart, or extract the Windows ZIP and open GunterChartUpdater.exe. Restart & update pauses all EAs in the selected MT5. Automated checks passed; native interaction/profile/DPI acceptance remains separate. No test trades were placed.