lvgl: setFontResolver + lvgl.SYMBOL; LuaModule::state() - #47
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…nt extension; lvgl.SYMBOL
…tup, not per app registerModule runs once when the sandbox creates its Lua state (Sandbox::initialize, called from the idempotent setup()); loadApp never recreates the state or re-runs registerModule. Fixes comments in ResidentLvglModule.h, ResidentLuaModule.h, docs/api.md and docs/changelog.md that said the resolver/state was fresh per app.
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LVGL apps could only use the families compiled into lv_conf.h. luavgl already has a per-state font extension for anything else; nothing installed it, and only the sandbox holds the state.
LvglModule::setFontResolver(fn): installed vialuavgl_set_font_extensionon everyregisterModule(fresh state per app). Built-ins first, then the resolver, then the next name in a comma list.lvgl.SYMBOL.<NAME>:LV_SYMBOL_*as Lua strings — the icon glyphs were unreachable from Lua.LuaModule::state(): the state a module table is being built in (test in test_lua_module).Unit suite green;
m5stick-lvglexample builds.🤖 Generated with Claude Code