v0.9.3

Added

• mdw.addHeaderMenu(spec) / mdw.removeHeaderMenu(id) / mdw.headerMenus():
  a game package can hang a dropdown of its own in the header bar, beside Font
  Size and Theme, for choices that are a set rather than a single gear row.
  Rows take the context menu's shape (label, onClick, separator,
  checked, keepOpen), items may be a function re-evaluated on every open,
  and menus are owner-stamped and reaped with the package like widgets and gear
  rows. Game menus follow MDW's own buttons, so none of them move.
• Header menus (mdw.addHeaderMenu) accept a type = "slider" row: dragged
  rather than clicked, taking the same fields as a widget slider row and
  going through the same gesture code, so a menu can carry a volume or
  brightness control. The menu stays open while the pointer is down.
• A header-menu row can be built from SEGMENTS laid left to right - parts,
  each a label, a slider or a checkbox with its own click target, one of them
  flex to take the width the others leave. "Volume [====] [ ] Mute" is one
  row rather than three.
• A header-menu row can carry TWO actions: onCheck runs when the checkbox
  itself is clicked, onClick when the rest of the row is. That makes a list
  row whose box and whose text mean different things - a playlist tick beside
  a title that plays - without listing the same items twice.
• A header-menu row that declares neither onClick nor onCheck is inert:
  no pointer cursor, no hover highlight. A caption or a hint that lit up under
  the pointer read as a button that did nothing.

Changed

• Two floats dragged against each other now snap mdw.config.floatSnapGap (2)
  pixels apart instead of edge to edge, so both panels keep a visible border
  instead of sharing one thick smeared line. Lining floats up (left-to-left,
  right-to-right) is unchanged.

Fixed

• Clicking a checkbox or a keepOpen row in a header menu no longer throws a
  Lua error. Flipping one box rebuilt the whole card, which deletes the very
  label Mudlet is dispatching the click on; such a row now just re-reads its
  own getters and re-echoes itself, creating and destroying nothing. The same
  in-place refresh carries a re-declaration while the menu is open, so a
  checkbox the game confirms a moment later still catches up on its own.
• Gauge and slider rows no longer error on their first paint. A fresh Geyser
  label carries no stylesheet, getLabelStyleSheet answers nil for one, and
  getLabelFormat indexes that - so the first thing to echo into a gauge's
  text label (setFgColor is an echo) threw a Lua error per repaint. Both the
  widget rows and the new menu sliders now style that label directly before
  anything writes to it, rather than through Geyser.Gauge:setStyleSheet,
  which would need a front and a back stylesheet it has no reason to set.
• An open header menu now repaints when its owner re-declares it. items was
  read on open only, so a menu whose rows track live game state - a checkbox
  the server confirms a moment after the click - sat stale in front of the
  player until they closed and reopened it, making a tick look like it landed
  on the wrong row.