Root cause of the Home screen dial rendering tiny and pinned to the
top-left, confirmed via isolated test compile and direct inspection
of generated C++: an explicit main: sub-block on an LVGL arc widget
silently suppresses the implicit top-level MAIN-part style properties
(align, width, height, x, y) instead of merging with them. All three
arcs (dial_bg_arc, heat_arc, cool_arc) used a main: block for
arc_color/arc_width/arc_opa, which wiped out their align/width/height
in the exact same commit that set them (my earlier size/wrapper fix
never had a chance to take effect).
Verified via a standalone test config: an arc with main: nesting
generates zero lv_obj_set_style_width/height/align calls; the
identical arc with the same properties flattened to top-level
generates them correctly. indicator:/knob: are unaffected since those
are genuinely separate LVGL parts that require explicit nesting.
pyr0ball
60f133bfa3