fix: normalize netLpPosition to netLpPos for API consistency

[0x-SquidSol]

Summary

• Issue: The same logical field (net LP position) used two different JSON names: netLpPosition in /funding/global and /funding/:slab top-level, but netLpPos in /markets, /open-interest, and all funding history arrays. Most notably, a single /funding/:slab response contained both names — netLpPosition at the top level and netLpPos inside last24hHistory entries.
• Fix: Standardizes on netLpPos everywhere.

Why netLpPos?

• 6 of 8 existing occurrences already used netLpPos
• Matches the DB column name net_lp_pos (natural camelCase translation)
• Aligns with the abbreviated convention used throughout the API (netLpPos, lpSumAbs, etc.)
• Smallest diff — only 2 response fields need changing

Changes

File	Change
src/routes/funding.ts	netLpPosition → netLpPos in /funding/global (L82) and /funding/:slab (L143, L192) responses + comments
openapi.yaml	Updated FundingRateSummary (L888) and FundingRateDetails (L905) schemas
tests/routes/funding.test.ts	Updated assertion (L94)

Test plan

• tsc --noEmit passes
• vitest run passes (186/186 tests)
• Verified netLpPos is now used consistently across all endpoints

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: fbbddfcb-b3f6-414a-a09e-c94a2c89364b

📥 Commits

Reviewing files that changed from the base of the PR and between fb94c29 and 43647ab.

📒 Files selected for processing (3)

• openapi.yaml
• src/routes/funding.ts
• tests/routes/funding.test.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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