Karim/fix alphaq spill space

[karimhass]

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Description:

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quick links for more information:

• README.md
• spellbook docs
• CONTRIBUTING.md

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PR Summary

Medium Risk
Introduces new incremental/merge models that join large transfers/instruction_calls tables and depends on instruction-index assumptions, so errors could silently drop or misclassify trades and affect downstream dex_solana aggregates.

Overview
Adds AlphaQ coverage to Solana DEX datasets by introducing new incremental models for alphaq_solana_stg_raw_swaps (instruction-call sourced swap events) and alphaq_solana_base_trades (trade legs derived from token transfers), plus a alphaq_solana_trades view filtered from dex_solana_trades.

The base-trades logic optimizes transfer lookup by generating expected transfer keys per swap and semi-joining (EXISTS) into tokens_solana.transfers, then enforcing exactly one bought and one sold transfer per swap via HAVING counts.

Wires AlphaQ into the aggregated dex_solana_base_trades UNION and adds schema.yml metadata/tests (unique keys + check_columns_solana_dex_trades).

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