feat(solana/jupiter): Add lend_events model and update schema for integration

[Osman-SK]

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Description:

• Introduces decoding for instructions (supply/borrow/flashloans etc.)
• Updates schema.yml with columns, tests, and descriptions.
• Closes [CONTRIBUTION] Add Jupiter Lend to Solana/Jupiter Schema #9093

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quick links for more information:

• README.md
• spellbook docs
• CONTRIBUTING.md

[cursor]

PR Summary

Introduce an incremental model decoding Jupiter Lend events (supply/borrow/flashloan) with nominal and USD values, and register it in schema with tests/metadata.

• Models:
  • Add dbt_subprojects/solana/models/jupiter/jupiter_solana_lend_events.sql:
    • Decodes Operate instruction for Jupiter Lend (jupeiUmn818...) filtering by discriminator 0xd96ad06374972a87 and start time > 2025-07-23.
    • Extracts supply_amount_raw, borrow_amount_raw, withdraw_to, borrow_to, transfer_type; classifies tx_type via executing accounts.
    • Converts raw amounts to nominal via tokens_solana.fungible decimals; joins prices.usd_forward_fill to compute unit_price, supply_usd, borrow_usd.
    • Incremental delta table partitioned by block_month, merge strategy; unique_key = [tx_id, outer_instruction_index, supply_amount_nominal].
• Schema:
  • Update dbt_subprojects/solana/models/jupiter/jupiter_solana_schema.yml:
    • Register jupiter_solana_lend_events with column docs, tags, and dbt_utils.unique_combination_of_columns test on tx_id, outer_instruction_index, supply_amount_nominal.

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[Osman-SK]

Dune query and Jupiter Lend website values are very close.

[jeff-dude]

closing based on attached issue convo