feat(apps): first-party data sources — HL node fills + GMX Subsquid

[Flotapponnier]

Summary

Replaces the DeFiLlama proxy with first-party protocol data sources.

Hyperliquid (hyperliquid:hypercore)

• Switches from DeFiLlama totalDataChartBreakdown to live node fills
• hl-fills-agg.py runs on the SGP non-validating node, reads node_fills_by_block/hourly/, aggregates fee - builderFee per day, serves HTTP on port 2116
• Fills archive starts 2026-06-01; backfill runs automatically in background
• Third-party builder code cuts correctly excluded

GMX v2 Arbitrum + Avalanche (gmx-v2:arbitrum, gmx-v2:avalanche)

• First-party Subsquid GraphQL (GMX-operated indexer)
• Position fees: split into position_fee/burn (protocol) + position_fee/lp (pool) — exact % comes from contract accounting, not a fixed model
• Swap fees: swap_fee/burn (fee receiver) + swap_fee/lp (pool)
• Borrowing fees: borrow_fee/lp (pool-only per GMX design)
• Amounts stored raw with Decimals=30 (GMX internal PRICE_PRECISION) — no float64 precision loss

Infra change

harnesses/apps/scripts/hl-fills-agg.py is deployed on the SGP node (15.235.224.14:2116, pm2 hl-fills-agg). Port 2116 opened in UFW.

Test plan

• Leaderboard API returns Hyperliquid, GMX v2 Arbitrum, GMX v2 Avalanche, dYdX
• GMX 30d gross ≈ position + swap + borrow fees across all markets
• GMX burn/lp split reflects actual contract fee receiver factor (not a hardcoded %)
• HL 30d gross grows as backfill completes (should reach ~$40M+ once July data cached)
• No DeFiLlama events remain in fee_events for hyperliquid:hypercore