fix(list): repair game list separators and revert the android options button

[wyne]

Two independent fixes to the game list and game header.

Game list separators

ItemSeparatorComponent stopped keeping up with the list once itemLayoutAnimation was enabled. As rows animated into and out of an already-mounted list (game creation, rematch, delete), separators stayed attached to the wrong neighbours — lines went missing between games, and one lingered under the final row.

The line now lives on the row itself, rendered above every row but the first, so it moves with the row it belongs to. Two supporting details:

• Height is PixelRatio.roundToNearestPixel(1) rather than StyleSheet.hairlineWidth; fractional Android densities were rounding the hairline away to nothing.
• The row wrapper is collapsable={false} so Android's view flattening doesn't drop it.

Covered by a new test that drives a mounted ListScreen through prepends and deletes and asserts which rows own a line at each step.

Android game options button

Reverts the GameOptionsButton portion of #755. That change swapped the shared layout for an android-only dots-vertical overflow glyph, which dropped the addend column and the current interaction-mode icon from the header on Android. Both platforms are back on the shared layout — the file is byte-identical to its pre-#755 state.

Testing

• npx jest — 451 tests across 45 suites pass
• npx tsc --noEmit clean
• npx eslint on the changed files clean (one pre-existing exhaustive-deps warning in ListScreen.tsx, untouched)

🤖 Generated with Claude Code

[github-actions]

Coverage after merging fix/list-separators-android-menu into main will be

65.73%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
redux
GamesSlice.ts	59.90%	35.42%	63.33%	69.30%	104–105, 105, 105, 107, 115–116, 116, 116, 118, 126, 148, 173–175, 190, 220, 227, 229, 232–234, 298, 311, 320–321, 321, 321, 327, 327, 327–328, 330, 332–333, 336, 336, 336, 336, 336–337, 340–341, 343, 345, 345, 345, 345, 345–346, 348, 348, 348, 350–351, 354, 354, 354, 356, 58, 69, 86, 91–92, 92, 92
PlayersSlice.ts	88.04%	95%	85.71%	86.27%	105, 107, 115, 35, 52–53, 70–71
SettingsSlice.ts	61.54%	66.67%	55%	65.38%	103, 106, 111, 117, 61, 64, 70, 73, 76, 88, 97
backup.ts	78.19%	75.19%	88.89%	80.21%	105, 105, 128–130, 138, 174–175, 177, 191–195, 197, 197, 197–198, 203, 206, 217, 227–228, 244, 58–63, 65, 68, 68–70, 70, 70–71, 71, 71, 73–74, 76–78, 80–81, 81–82, 88–89
hooks.ts	100%	100%	100%	100%
scoreUtils.ts	93.33%	87.50%	100%	100%	5
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, 29, 33, 60, 67, 74, 81, 99
testStore.ts	0%	100%	0%	0%	11–15, 20–23, 25, 42–44, 5
src
Analytics.ts	100%	100%	100%	100%
AnalyticsEvents.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	82.35%	80%	66.67%	88.89%	104–105, 49, 53, 95, 98
constants.ts	100%	100%	100%	100%
platform.ts	100%	100%	100%	100%
theme.ts	93.75%	85.71%	100%	100%	79
src/components
EditGame.tsx	79.63%	75%	66.67%	84.85%	35, 49, 62–63, 86, 86, 86–87
FloatingActionButton.tsx	95.24%	100%	92.31%	96%	47
GameListItem.tsx	94.19%	85.29%	100%	100%	122, 155, 25, 31, 58
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	90.91%	80%	100%	96.67%	51, 53, 55, 55, 64, 70
SectionLabel.tsx	100%	100%	100%	100%
SplashOverlay.tsx	0%	0%	0%	0%	22–24, 24, 24, 26–28, 30, 32–33, 35, 37, 40, 40, 40, 43, 49, 53, 58, 74
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, 38–42, 42, 42–43, 43, 43, 43, 43–44, 44, 44–46, 46, 46, 48–50, 50, 50, 52, 55, 55, 59–60, 63–64, 66, 68, 68, 68, 68, 68–69, 69, 69, 69, 69, 71, 81, 81, 98
TileBoard.tsx	96.43%	90.32%	100%	100%	18, 77, 93
src/components/Buttons
AppSettingsButton.tsx	100%	100%	100%	100%
GameOptionsButton.tsx	51.85%	42.86%	69.23%	54.72%	102, 122, 122, 122–123, 125–126, 130, 130, 130, 130, 130, 130, 130, 132–133, 135–136, 138–139, 141–144, 146–148, 150–152, 159, 165–166, 177, 179, 179, 185, 185, 185, 185, 40, 46, 48, 58, 65, 73, 94, 98
HeaderButton.tsx	81.82%	60%	100%	100%	19–20
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, 16–17, 17, 17–18, 18, 18–19, 19, 19, 21, 21, 21, 23–24, 26–27, 27, 27, 27, 27, 29–30, 30, 33–34, 43–44, 44, 44, 46–48, 56, 58, 61, 61, 61, 61, 63, 63, 69, 69,