The last three payloads HeaderBar still consumed as truth. All are backed by
Simulation getters (getCurrentTick, getArtifactCount, getBossWaveCounter,
getBossCountdownTicks) and the win count by world.artifacts.artifactWinCount,
so the handlers now re-read rather than trust the event.
Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YHcUerKAZKWNvSKJxYKbnG
Four separate caches rasterized the same item SVGs, one of them rebuilt on
every recipe-dialog open. MainWindow now owns one cache and hands a
non-owning pointer to HeaderBar, BuildButtonGrid, GameWorldView and
RecipeSelectionDialog.
Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GH8ZMRY3vhxxXcaUxBqxkk
HeaderBar was the only panel caching event payloads as truth. It now holds
a const Simulation* and re-reads getBuildingBlocksStock() /
getCurrentExpansionCost() in the handlers, per the "events are refresh
signals" rule.
Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GH8ZMRY3vhxxXcaUxBqxkk
