feat: persist pools repository with Prisma and include poolId in pric…

[CHKM001]

PR #315 ## Persist Pools Repository with Prisma + Include poolId in Price Response

What

Replaces the in-memory Map-based PoolsRepository with a Prisma-backed implementation so pool state (especially currentPrice) survives API restarts. Also fixes the price controller response to include poolId for frontend consumption.

Changes

API — PoolsRepository (apps/api/src/pools/pools.repository.ts)

• All methods (listActivePools, upsertPoolState, getTicksByPoolId, poolExists, getPoolDetailById) now query/update Prisma instead of an in-memory Map
• Migration 20260624000000_persist_pool_price adds currentPrice and updatedAt columns to the Pool table

API — Price controller (apps/api/src/price/price.controller.ts)

• GET /prices/:tokenA/:tokenB/:interval now returns { poolId, candles } instead of { candles }
• Tests updated to assert the new shape

Web — usePriceCandles hook (apps/web/hooks/usePriceCandles.ts)

• Parses string-valued candle fields from the API (open, high, low, close, volume → Number(...))
• Exposes poolId alongside candles, loading, currentPrice
• Cleans up WebSocket reconnect logic and dependency array

Web — Tests

• usePoolDetail.test.ts: Wraps hooks in QueryClientProvider to match current react-query requirements
• SwapCard.test.tsx: Replaces brittle vi.mocked(require(...)) with module-level mutable variables for cleaner state transitions

Testing

Test Suites: 26 passed, 2 skipped (integration, no DB)
Tests:       204 passed, 26 skipped

• pools.repository.spec.ts — 4 tests, all pass
• price.controller.spec.ts — updated expectations, all pass
• pools.service.spec.ts — 11 tests, all pass
• Full API suite: 0 failures

Notes

• The pnpm-lock.yaml change is a lockfile reformat from a newer pnpm version (no dependency changes)
• TypeScript errors exist pre-existing in unrelated modules (horizon.service.ts, positions.service.spec.ts) and are not addressed here
• Integration tests (pools.ticks.integration.spec.ts, all-exceptions.filter.spec.ts) require a running DB and are intentionally skipped in CI without one

Closes #315