feat: GET /candles/:slab UDF OHLCV endpoint (Phase 3)

[dcccrypto]

Summary

New endpoint serving internal-trade candles in TradingView UDF format.

• GET /candles/:slab?resolution=1|5|15|60|240|1D&from=<sec>&to=<sec>
• Response: { s: "ok"|"no_data"|"error", t, o, h, l, c, v }
• Aggregates the existing trades table on-the-fly via JS bucketing.
  Works on plain Postgres today; swappable to TimescaleDB continuous
  aggregates when applied (see indexer migration).

Paired with frontend usePercolatorCandles hook in percolator-launch PR.

Test plan

• pnpm vitest run — 228 passing, 9 new tests on bucketCandles + route
• pnpm tsc --noEmit clean
• Post-merge: verify against live SOL/USDC slab

Dependencies

• Apply SQL CREATE INDEX IF NOT EXISTS trades_slab_created_at_idx ON trades (slab_address, created_at DESC); to Supabase (tracked in indexer migration 20260420_candle_support.sql).

🤖 Generated with Claude Code

[coderabbitai]

Warning

Rate limit exceeded

@dcccrypto has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 59 minutes and 41 seconds before requesting another review.

Your organization is not enrolled in usage-based pricing. Contact your admin to enable usage-based pricing to continue reviews beyond the rate limit, or try again in 59 minutes and 41 seconds.

⌛ How to resolve this issue?

After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

We recommend that you space out your commits to avoid hitting the rate limit.

🚦 How do rate limits work?

CodeRabbit enforces hourly rate limits for each developer per organization.

Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.

Please see our FAQ for further information.

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 972494e3-c673-405b-b598-25d707979109

📥 Commits

Reviewing files that changed from the base of the PR and between 1981271 and 8580e04.

📒 Files selected for processing (3)

• src/index.ts
• src/routes/candles.ts
• tests/routes/candles.test.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch helius-perf-upgrade

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}