feat(minigames): add draw lots and scratch-off minigame types

[sung17]

Summary

• Draw Lots and Scratch Off join Jackpot/Lucky Wheel/Gashapon as playable minigame types, with their own preview art, play screens, and default assets.
• Minigame plays/participants/winners are now tracked (Minigame.playsCount/participantsCount/winnersCount) and shown as sortable columns in the minigames list.
• The minigame history table can jump to a player's originating conversation, resolved via the new MinigameContact.contactInboxId column instead of guessing by channel.
• contactInboxService.listByContactId/findRecentByContactId are now scoped by workspaceId (cache key + query) to remove cross-workspace ambiguity now that more call sites depend on the result.

Changes

• apps/builder/src/features/minigames/**: new Draw Lots / Scratch Off config, preview, and play-screen components; registries updated; minigames list adds plays/participants/winners columns; history table adds "jump to conversation" action.
• packages/minigame-ui: new draw-lots-art and scratch-off-art components.
• packages/database: Minigame gains counter columns; MinigameContact gains contactInboxId (FK to ContactInbox); new migrations 20260903155650_add-contact-inbox-id-to-minigame-contact and a regenerated 20260903024507_error_log_indexes.
• packages/business: minigameContactService.recordPlay/resolvePlayState track contactInboxId and update counters; new resolveOpenerPlayState wraps opener tracking in a transaction; contactInboxService and conversationService.findDMByContactInbox support workspace-scoped, inbox-aware conversation lookup.
• apps/worker, packages/variables, apps/builder/src/features/messages: updated call sites for the new workspaceId-scoped contactInboxService methods.
• All 20 apps/builder/messages/*.json locale files updated with new translation keys.

Test plan

• pnpm lint
• pnpm --filter builder check-types
• Manually create a Draw Lots and a Scratch Off minigame, verify preview + play flow end to end
• Verify minigames list shows plays/participants/winners counts
• From minigame history, click a player and confirm it opens/jumps to their conversation