Add coin transactions, store, and block quick sells

[dqnamo]

Summary

• add a transaction-based coins model (including removed blocks) to the Instant schema and transfer session transactions when users create profiles
• introduce rarity-based pricing helpers plus quick-sell actions and a new store tab so players can trade blocks for coins, respecting supporter-only items
• filter removed blocks from gameplay queries so sold items disappear without respawning default tiles

Testing

• npm run lint (prompts for ESLint setup in this environment)

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Codex Task

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Project	Deployment	Preview	Comments	Updated (UTC)
growdoro	Ready	Preview	Comment	Nov 25, 2025 3:16pm