R3 gate #67: numeric construction demonstration

[briansrls]

Summary

R3 gate #67 now demonstrates the numeric construction chain through the bootstrapped substrate: Magnitude -> Nat -> Int -> Rational -> Real, with Int32 and Real64 represented as machine-width refinements via Compose<..., MachineWidth<...>>. The float substrate now exposes Real32/Real64 as width refinements of abstract Real, while Float32/Float64 remain compatibility aliases to those construction rows.

Test plan

• cargo fmt — passed.
• cargo test -p v3-compiler --test integration bootstrap_ — passed via BuildBuddy after splitting the gate Consolidate hardcoded metadata lists into compact helper macros #67 receipts.

R3 / P5 receipt

• Gate receipt: m1_substrate_test now carries focused receipts for Nat, Int, Rational, Real, Int32, Real64, and the Float64 compatibility alias, so each numeric-construction edge is checkable without bundling unrelated claims into one test.
• Debt receipt: this PR pays down the prior endpoint-only numeric construction receipt by making the full chain structural and checkable. No new tracked debt is introduced.

[briansrls]

Addressed the review's P5 receipt concern by replacing the template PR body with a concrete summary, focused test plan, and explicit R3/P5 debt receipt for gate #67. — sent from loyal-eagle-130

[briansrls]

Verified the review against current head 352ba42. The PR description already includes the explicit ## R3 / P5 receipt with both gate and debt receipts. The optional Ieee754Float note is accurate: current search shows only the compatibility declaration in dsl/std/float.dag and generated bootstrap entries, with Float32/Float64 routed through Real32/Real64. No code change needed for this APPROVE review. — sent from loyal-eagle-130

[briansrls]

Verified against current head 32c4ee3. The optional Ieee754Float observation is accurate and non-blocking: search shows the compatibility declaration in dsl/std/float.dag plus generated bootstrap entries only; the public Float32/Float64 rows route through Real32/Real64, and the header explicitly documents Float<N> = Real<N> = Compose<Real, MachineWidth<Word*>>. No code change needed for this APPROVE review. — sent from loyal-eagle-130

[briansrls]

Verified against current head b4f17f2. Both optional observations match the tree: Ieee754Float appears only as the compatibility declaration in dsl/std/float.dag plus generated bootstrap entries, and the alias walkers intentionally retain the existing loud-at-16 bound. I agree both are follow-up/policy questions rather than blockers for this APPROVE review. — sent from loyal-eagle-130

[briansrls]

Verified against current head 78a849e. The APPROVE review's optional P5 note is satisfied out of band: the PR body includes ## R3 / P5 receipt with a gate receipt for m1_substrate_test::numeric_construction_demonstration_gate_67 and a debt receipt stating the prior endpoint-only receipt is paid down with no new tracked debt. No code change needed for this APPROVE review. — sent from loyal-eagle-130

[briansrls]

Verified against current head ad8ce44. The APPROVE review matches the tree: dsl/std/float.dag routes Float<N> through Real<N>, the gate #19 and #67 receipts are split in m1_substrate_test.rs / substrate_receipts.rs, CI is green, and the PR body includes the ## R3 / P5 receipt gate/debt receipt. No code change needed for this APPROVE review. — sent from loyal-eagle-130

[briansrls]

Verified against current head f6585e9. The APPROVE review's optional observations match the current tree: Ieee754Float appears only as the compatibility declaration plus generated bootstrap entries, and assert_numeric_construction_demonstration_gate_67 is the single named gate receipt bundling the construction-chain checks. No code change needed for this APPROVE review. — sent from loyal-eagle-130