V30 Gate 6: Source-To-Shares Proof Cleanup

[geraldarthurdavis]

Summary

• Adds package-owned SourceToSharesProof primitives for fit-deposit measurements, contribution weights, BTD range slices, BTC fee allocation, conservation checks, zero-cell/refit tail posture, and ancestry evidence.
• Exposes source-to-shares proof settlement through the BTD API boundary and Next route without route-local accounting reinterpretation.
• Updates the V30 SPEC/DELTA/NOTES/PARITY family, BTD/Terminal docs, Gate Quality workflow, and check:v30-gate6.

Proof

• pnpm --filter @bitcode/btd typecheck
• pnpm --filter @bitcode/api build
• pnpm --filter @bitcode/btd test
• pnpm --filter @bitcode/api exec jest --config jest.config.cjs --runTestsByPath src/routes/tests/btd-crypto.test.ts --runInBand
• pnpm --dir uapi exec tsc --noEmit --pretty false
• pnpm run check:v30-gate6
• git diff --check

Accepted Boundaries

• Does not add a new physical source-to-shares registry table.
• Does not expose protected AssetPack source before paid unlock and delivery admission.
• Does not change BTD supply law or measureminting.
• Does not promote V30 or change BITCODE_SPEC.txt.

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Project	Deployment	Actions	Updated (UTC)
engi-uapi	Ready	Preview, Comment	May 21, 2026 10:05pm