Optimize TileBoard initial load

[wyne]

Summary

• consolidate TileBoard layout calculation into a single layout model and reuse tile dimensions across rows
• skip rendering tiles from the first transient board layout measurement to avoid the visible high-position frame
• remove per-tile load fade animations and make initial score text render directly at its first-frame state
• add regression coverage for settled TileBoard layout and initial score animation behavior

Notes

• This intentionally avoids the earlier transition-level gating experiments; the final fix is scoped to TileBoard layout readiness so the game screen and GameSheet can load normally.

Tests

• npm run test -- TileBoard --watchman=false --coverage=false
• npm run test -- AdditionTile --watchman=false --coverage=false
• npm run test -- GameScreen --watchman=false --coverage=false
• npm run test -- Navigation --watchman=false --coverage=false
• npm run lint

[github-actions]

Coverage after merging codex/investigate-tileboard-load into main will be

63.01%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
redux
GamesSlice.ts	54.09%	27.50%	56.52%	64.58%	101, 109, 131–133, 148, 167, 178, 185, 187, 190–192, 242, 256, 269, 278–279, 279, 279, 285, 285, 285–286, 288, 29, 290–291, 294, 294, 294, 294, 294–295, 298–299, 301, 303, 303, 303, 303, 303–304, 306, 306, 306, 308–309, 312, 312, 312, 314, 52, 63, 80, 85–86, 86, 86, 98–99, 99, 99
PlayersSlice.ts	89.90%	100%	87.50%	85.11%	103, 105, 33, 50–51, 68–69
SettingsSlice.ts	46.81%	25%	42.11%	54.17%	101, 104, 54, 57, 63, 66, 72, 75, 84, 84, 84, 90, 93, 98
backup.ts	0%	0%	0%	0%	11, 27–29, 31, 45–49, 51, 51, 51–52, 57, 60, 64–66, 71, 71, 71, 73–75, 78–79, 81–82, 85, 85, 85, 85, 85–87, 90–93, 95, 97
hooks.ts	100%	100%	100%	100%
selectors.ts	100%	100%	100%	100%
store.ts	0%	0%	0%	0%	10, 12, 12, 12–13, 13, 13–15, 18, 21–23, 23, 23, 23, 23–24, 28, 54, 61, 68, 75, 93
testStore.ts	0%	100%	0%	0%	11–15, 20–23, 25, 42–44, 5
src
Analytics.ts	100%	100%	100%	100%
ColorPalette.ts	100%	100%	100%	100%
Logger.ts	91.23%	87.50%	81.82%	94.74%	14–15, 22
Navigation.tsx	75.68%	72.73%	62.50%	83.33%	45, 49, 70, 73, 79–80
constants.ts	100%	100%	100%	100%
theme.ts	93.75%	85.71%	100%	100%	79
src/components
EditGame.tsx	81.40%	70%	71.43%	88.46%	25, 39, 64, 64, 64–65
FloatingActionButton.tsx	68.97%	100%	50%	73.68%	38, 41–42, 55–56
GameListItem.tsx	66.10%	47.83%	100%	73.33%	103, 20, 23–24, 24, 24–26, 26, 26–28, 28, 28–30, 30, 30–31, 73
GameListItemPlayerName.tsx	100%	100%	100%	100%
MenuOpenContext.tsx	87.50%	100%	66.67%	100%
PlayerListItem.tsx	0%	0%	0%	0%	123, 123, 134, 24, 32–34, 34, 34–38, 40, 40, 40, 40, 40–41, 41, 41–42, 42, 42, 44–45, 56, 63–64, 66, 72–73, 76, 79, 82–83, 90, 93, 93, 96, 96, 96–97, 99
ScoreLogTable.tsx	92.59%	82.35%	100%	96.15%	50, 52, 54, 54
src/components/AppInfo
RotatingIcon.tsx	0%	0%	0%	0%	18–19, 21–24, 26, 28–30, 37–38, 40, 40, 40–41, 44, 44, 44–48, 51, 53–54, 59
SeedData.ts	0%	100%	0%	0%	17, 47, 49–50, 52, 54–56, 58–60, 62, 68, 71, 82–85
src/components/BigButtons
BigButton.tsx	0%	0%	0%	0%	18, 18–20, 22–23, 23, 25, 25–26, 26, 48
src/components/Boards
ListBoard.tsx	86.81%	72.73%	84.21%	98.57%	123, 180, 206–207, 220, 223, 262, 29, 33, 59–61, 84, 84, 88, 92
PlayerTile.tsx	0%	0%	0%	0%	29, 39, 39, 39, 39, 39–40, 40, 40, 40, 40, 42–46, 46, 46–47, 47, 47, 47, 47–48, 48, 48–50, 50, 50, 52–54, 54, 54, 56, 59, 59, 63–64, 67–68, 70, 79, 79, 96
TileBoard.tsx	96.88%	90%	100%	100%	18, 49
src/components/Buttons
AppSettingsButton.tsx	100%	100%	100%	100%
BackButton.tsx	0%	100%	0%	0%	16–18, 20–21
GameOptionsButton.tsx	53.40%	45%	75%	54.90%	100, 118, 118, 118, 118, 118, 118, 118, 120–122, 124–126, 128–130, 132–135, 137–139, 141–143, 150, 156–157, 168, 170, 170, 176, 176, 176, 176, 38, 44, 46, 56, 63, 71, 92, 96
HeaderButton.tsx	100%	100%	100%	100%
src/components/ColorPalettes
ColorSelector.tsx	100%	100%	100%	100%
PalettePreview.tsx	0%	0%	0%	0%	10–12, 14, 19, 19, 25
PaletteSelector.tsx	0%	0%	0%	0%	13, 15–18, 20, 22, 22, 22, 24–25, 31, 37, 40, 45, 56
src/components/Headers
RoundHeaderTitle.tsx	0%	0%	0%	0%	12–14, 16, 18, 18, 18, 20–21, 21, 21–22, 22, 22, 24–25, 27–28, 28, 28, 28, 28, 30–31, 31, 34–35, 44–45, 45, 45, 47–49, 57, 59, 62, 62, 62, 62, 64, 64, 70, 70, 70, 70, 73, 73, 73, 73, 73, 75, 75, 75, 75, 84
src/components/Icons
RematchIcon.tsx	100%	100%	100%	100%
src/components/Interactions
InteractionComponents.ts	0%	100%	100%	0%	6
InteractionType.ts	100%	100%	100%	100%
interactionConstants.ts	100%	100%	100%	100%
src/components/Interactions/Dial
Dial.tsx	100%	100%	100%	100%
DialControl.tsx	54.49%	48.72%	59.52%	55.80%	117–118, 124, 142,