fix: prevent oracle deviation check from permanently bricking markets (H1)

[0x-SquidSol]

Summary

• The 30% historical deviation check rejected fast-moving prices but never recorded the rejection in price history
• The old anchor price persisted forever, causing every subsequent fetch to also be rejected
• Markets were permanently bricked until keeper restart (which clears in-memory priceHistory)

Fix

Add a consecutive rejection counter per market (deviationRejections Map):

• After 5 consecutive cross-validated prices are rejected, accept the price as a legitimate move
• Counter resets whenever a normal price is accepted (no lingering state)
• Recovery time: ~25 seconds (5 cycles × ~5s rate limit)

Why this is safe

• Cross-validation (DexScreener + Jupiter within 10%) already guards against bad data
• A single bad data point only counts as 1 rejection — nowhere near the threshold of 5
• Intermittent bad data (2 bad, 1 good, 2 bad) resets the counter on each good fetch

Test plan

• H1: accepts deviated price after 5 consecutive rejections (no permanent brick)
• H1: resets rejection counter when a normal price is accepted
• All 47 oracle deviation tests pass
• All 135 tests pass across full suite

🤖 Generated with Claude Code

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 09b675fc-afe0-49a6-a01b-01446417690c

📥 Commits

Reviewing files that changed from the base of the PR and between 63ad1a0 and 3b1767b.

📒 Files selected for processing (2)

• src/services/oracle.ts
• tests/services/oracle-deviation.test.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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