fix(llvm): match integer alignment and allocation layout

[julia-script]

Summary

• model LLVM 22.1.8 default and effective integer alignment specifications while preserving source-exact data-layout entries
• round arbitrary-width integer allocation sizes to ABI alignment and propagate corrected layouts through arrays, structures, and fixed vectors
• add pinned oracle coverage, OpenSpec requirements, public documentation, and an @silklang/llvm minor changeset

Verification

• pnpm typecheck
• pnpm exec biome check .
• pnpm test
• pnpm check
• pnpm release:candidate
• openspec validate llvm-module-declarations --type spec --strict --no-interactive
• git diff --check

Linear: JUL-28

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Project	Deployment	Actions	Updated (UTC)
silk-effect-docs	Ready	Preview	Aug 29, 2026 7:40pm