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L1 pure-alpha layer: wrap BLUE's live AlphaAssetSelector/AlphaBetSizer/ AlphaExitEngineV7 behind V-TYPES boundaries (wrap, not reimplement). max_leverage is a required explicit param (live default 5.0 / blue_parity 8.0 / recorded 9.0); smoke + tests confirm max_leverage=9.0 reproduces recorded sizing exactly (notional_fraction 0.20x9=1.8 = recorded our_leverage max). 7 tests pass. Exchange-agnostic: conviction leverage sizes quantity; exchange-lev map is L3. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>