[database] Create migration

[citrusinesis]

Summary by CodeRabbit

• New Features
  • Funding rates are now segmented by network (Mainnet/Testnet), improving clarity and accuracy in related views and reports.
  • Faster loading of funding rate data thanks to new indexing.
• Chores
  • Added migration scripts to streamline database updates and maintenance.

[coderabbitai]

Walkthrough

Adds Prisma migration tooling scripts, introduces a new funding_rates table, and extends it with a Network enum column (default Mainnet) plus indexes. Updates Prisma schema accordingly and adds a migration lock file. No runtime application code changes.

Changes

Cohort / File(s)	Summary
NPM scripts (database) packages/database/package.json	Added scripts: migrate (dev create-only), migrate:deploy, migrate:reset.
Prisma migrations (SQL) packages/database/prisma/migrations/20250919101430_init/migration.sql, packages/database/prisma/migrations/20250919101650_add_network_enum/migration.sql	Initial migration creates funding_rates table with indexes on ticker and createdAt. Subsequent migration adds Network enum, network column (NOT NULL, default 'Mainnet'), and index on network.
Prisma schema & config packages/database/prisma/schema.prisma, packages/database/prisma/migrations/migration_lock.toml	Schema adds Network enum, network field to FundingRates, and index on network. Added migration_lock.toml with provider=postgresql.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

I thump my paws—migrations hop in line,
New tables sprout, enums crisp and fine.
Mainnet by default, Testnet on the breeze,
Indexes whisper through the database trees.
With scripts to guide each tidy leap—
Our burrow’s data runs swift and deep. 🐇✨

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📜 Recent review details

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📥 Commits

Reviewing files that changed from the base of the PR and between ba7598d and c9144fa.

📒 Files selected for processing (5)

• packages/database/package.json (1 hunks)
• packages/database/prisma/migrations/20250919101430_init/migration.sql (1 hunks)
• packages/database/prisma/migrations/20250919101650_add_network_enum/migration.sql (1 hunks)
• packages/database/prisma/migrations/migration_lock.toml (1 hunks)
• packages/database/prisma/schema.prisma (1 hunks)

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