EmbeddedDisplay Studio 0.1.2

Code: the design's widgets and its backend, side by side

• Outline -- every widget of every page as one tree, with its tags and
  binding issues; filter to bound widgets, to issues or to one tag; a click
  selects the widget (switching page), a double-click opens its line in
  project.edsui.
• Backend -- one row per tag: read/write access, the widgets that use it,
  its live value and status (ok, unused, not declared). Values come
  from the Studio's tag engine while a panel is connected, else from a
  simulator scaled to each widget's range; double-click a writable tag to
  write it.
• Generate backend... writes backend/ into the project: a runnable
  CONTRACT 2 UDP backend with one read/write stub per tag, tags.json and
  tags.h.
• The coding agent is told about the design -- pages, the selected widget,
  its bindable properties, tags and issues -- with one-click quick actions.

Panel runtime (hmi-ui)

• A trend chart bound to an ordinary numeric tag draws that tag's recent
  samples; it used to stay empty unless the tag itself carried a list.
• ShToggle flips on a tap and draws checked on the right side; alarm tags
  of 64 bytes or more fire; ShTrendChart draws the reference gradient in
  O(width); ShClusterGauge no longer freezes on a tiny majorStep.

Designer

• Adding, duplicating and deleting pages, and arrow-key nudges, are undo
  steps (a run of nudges is one); a multi-widget paste is one step. Before,
  a later undo could replay geometry the design no longer had.
• Arrange is 9x faster on busy pages; text alignment applies to every
  selected text widget; image widgets are no longer decoded on every paint.

Daemon and deployment

• Commands with NaN/Infinity are rejected; subscribe TTL is capped at
  60 s; a dead Modbus server is retried every reconnect_s, not at the poll
  rate.
• An upload the panel aborted reports the panel's own error; following panel
  logs no longer repaints the whole view per line.
• The Yocto layer installs hwd.json 0640.

CI is green again: the Linux job builds hmi-ui and runs its C tests and
the conformance and parity suites against it; the shell and native-loader
jobs find their scripts.