feat(history): port the cu-10 game history screen with live filtering

[netqo]

Summary

• Replaces the History placeholder with the cu-10 mockup port: title, search input, two filter groups (Game in a wrapping FlowRow, Result on a single line), aggregate summary strip and round list.
• Round taps route through onOpenRound to Route.RoundDetail.build(id); an EmptyState falls back when the active filters + search yield zero matches.
• Extracts GameKey and RoundOutcome out of feature/lobby/LobbyUiState into a shared model package so lobby's recent activity and history's round filter resolve the same domain types.
• Adds a wrap flag to FilterChipRow that switches the inner layout from Row to FlowRow without touching the existing scrollable mode.

Notes

• Filtering runs in-screen via derivedStateOf. The summary strip stays aggregated over the full unfiltered set (mockup shows 128 rounds even with only the five preview rows visible).
• Search matches the round id and the game label by case-insensitive substring; combined with the chip filters this is enough to demonstrate the surface until the Firestore-backed VM lands.
• Coinflip's third metric column renders 'Prediction' instead of 'Multiplier' since the mockup uses the heads/tails label there.

Test plan

• ./gradlew assembleDebug
• ./gradlew ktlintCheck
• ./gradlew detekt
• ./gradlew connectedDebugAndroidTest (HistoryScreenTest: 4/4 passing on device)
• Installed on device, walked the filter combinations and the round tap