GER40 breakout as a World-consumable Composite blueprint

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Make the shipped real-data session-breakout reachable by the World families (sweep / walk_forward / compare) by shipping it as a Composite blueprint with a clean param_space: structural deformers bound out (Delay.lag), the bar-period a single coupled knob feeding both Resample and Session. Absorbs #94 (form), #96 (period coupling + param_space hygiene), #97 (walk_forward non-degenerate). Spec follows a recon of the blueprint layer's param fan-out capability.

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