feat(solana): add AlphaQ DEX integration

[karimhass]

• Add AlphaQ DEX models (stg_raw_swaps, base_trades, trades, schema)
• Uses optimized 3-step semi-join pattern for tokens_solana.transfers
• project_start_date 2026-02-03 with 1-day cap for CI efficiency
• Add alphaq_solana_base_trades to dex_solana_base_trades union
• Fix contributor name: Eekeguy → Eekeyguy

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Description:

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quick links for more information:

• README.md
• spellbook docs
• CONTRIBUTING.md

[cursor]

PR Summary

Medium Risk
Adds new incremental models and joins into tokens_solana.transfers and the sector-wide base-trades union, which can impact performance and trade correctness if the transfer-key logic is off. Changes are additive with limited blast radius beyond the new AlphaQ rows.

Overview
Adds an AlphaQ Solana DEX integration by introducing new dbt models to extract swap instructions, map them to SPL token transfers, and emit standardized trade rows.

The new alphaq_solana_base_trades model uses an optimized semi-join pattern (build expected transfer keys → EXISTS prune tokens_solana.transfers → rejoin and aggregate) and enforces one bought + one sold transfer per swap; all AlphaQ models are incremental/partitioned and limit non-incremental runs to a single day starting 2026-02-03 for CI.

Exposes alphaq_solana_trades as a filtered view of dex_solana_trades, adds schema/tests/metadata for the AlphaQ models, and includes alphaq_solana_base_trades in the dex_solana_base_trades union so AlphaQ flows into the sector-wide dataset.

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