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feat(bootstrap): host weight initializer with deterministic test patterns (Wave 45, R-HT-2) #799

Description

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Wave 45 — R-HT-2: Host weight initializer with deterministic test patterns

Summary

Add a WeightInitializer that generates deterministic packed-trit weight patterns and loads them into MockMmio BRAM addresses. Patterns: all-N, all-Z, all-P, alternating (N,Z,P), phi-sequence (cycling), and seeded-random. Bridges W44 ternary packer with W41 InferenceEngine.

Scope

  • bootstrap/src/host/weights.rs — new file
  • bootstrap/src/host/mod.rs — add pub mod weights
  • bootstrap/src/main.rs — new CLI host-weight-gen
  • bootstrap/tests/host_weights.rs — >= 20 integration tests
  • docs/NOW.md — wave-45 entry

Acceptance

  • WeightInitializer with 5+ pattern generators
  • host-weight-gen CLI
  • >= 20 integration tests
  • docs/NOW.md updated
  • Zero regressions

Activity

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    area/hostHost side: driver/CLI/bootstrappriority/mediumShould fix in current quarter

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