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J. Nick Koston
33e646cedf
Callback::create() can store callables inline (no heap allocation) when they fit in sizeof(void*) — i.e., a single [this] capture on 32-bit platforms. Many automation triggers captured [this, parent] in their callback lambdas, doubling the capture size and forcing heap allocation. Store the parent/state pointer as a class member and capture only [this] in the lambda. This trades 4 bytes of member storage for avoiding a permanent heap allocation per callback registration. Components changed: cover, valve, lock, fan, media_player, datetime, display_menu_base, graphical_display_menu, esp32_improv, mqtt_fan.
