Prove unsigned byte-order reads, writes and updates

[joshlf]

Exercise the production U16/U32 read, write and set paths for both byte
orders with twelve total inline contracts over every typed input. Connect
Aeneas bit-vector codecs to the shared radix-256 mathematics and separately
check complete positional sums, output digits and setter/getter equality.

Model the extracted zero-field PhantomData carrier explicitly. Admit only
the exact opaque Formatter Type required by unused formatting dictionaries;
no formatting behavior or proposition is assumed. Both signatures and raw
model ownership remain audited.

Validation: fresh pinned extraction, complete golden comparison, independent
golden/live proof builds and required-contract/axiom audits; pinned-nightly
Rust byte examples and repository pre-push checks.

Agent-authored-by: AI agent acting on joshlf's behalf

---

• 　  Prove record construction against independent Rust references #3846
• 　  Prove cast metadata composition against reference sizes #3845
• 　  Prove numerical cast plan selection and metadata conversion #3844
• 　  Prove cast validation and exact metadata inference #3843
• 　  Prove allocation size preparation and tail containment #3842
• 　  Prove the concrete CastUnsized layout gate #3841
• 　  Prove split lengths and non-overlapping numerical regions #3840
• 　  Prove byte advancement and padding sequence queries #3839
• 　  Prove normalized layout padding and field extension #3838
• 　  Prove concrete pointer metadata operations #3837
• 　  Prove exact trailing sizes, padding and capacity #3836
• 　  Prove primitive layout constructors with recursive mathematical models #3835
• 　  Compare nested DST sizes with a recursive Rust oracle #3834
• 　  Model alignment and phase encoding as a bounded mathematical pair #3833
• 　  Refine recursive record semantics into normalized layouts #3832
• 　  Prove trailing-layout normalization and capacity arithmetic #3831
• 　  Reuse Aeneas specifications for views and indexed loops #3830
• 　  Strengthen arithmetic specifications and prove arithmetic corollaries #3829
• 　  Check native total and partial Aeneas specifications #3828
• 　  Prove scalar bit-validity predicates and checked byte candidates #3852
• 　  Prove production byte writes and preserved destination regions #3851
• 👉 Prove unsigned byte-order reads, writes and updates #3827
• 　  Prove checked Boolean decoding and byte-prefix copying #3849
• 　  Inspect Rust execution before Aeneas lowering #3848
• 　  Verify doc-owned specifications over recursive mathematical models #3826
• 　  Separate numerical cast planning from typed pointer projection #3825
• 　  Move pointer cast implementation into its own source file #3824
• 　  Share Rust mathematical models across Anneal frontends #3823
• 　  Align Anneal V1 with the current Aeneas and Lean toolchain #3822

Latest Update: v7 — Compare vs v6

📚 Full Patch History

Links show the diff between the row version and the column version.

Version	v6	v5	v4	v3	v2	v1	Base
v7	vs v6	vs v5	vs v4	vs v3	vs v2	vs v1	vs Base
v6		vs v5	vs v4	vs v3	vs v2	vs v1	vs Base
v5			vs v4	vs v3	vs v2	vs v1	vs Base
v4				vs v3	vs v2	vs v1	vs Base
v3					vs v2	vs v1	vs Base
v2						vs v1	vs Base
v1							vs Base

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-08T10:22:49.471081Z	f72102d	PR opened
🔒 Security Review	✅ Completed 2026-10-08T10:23:27.007168Z	f72102d	PR opened

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 44 lines in your changes missing coverage. Please review.
✅ Project coverage is 60.31%. Comparing base (a900b14) to head (9943ba9).

Files with missing lines	Patch %	Lines
zerocopy/src/byteorder.rs	0.00%	44 Missing ⚠️

Additional details and impacted files

@@                          Coverage Diff                          @@
##           Gsfnevxtkkrjpqabfdz42n6ncfeyaul7y    #3827      +/-   ##
=====================================================================
- Coverage                              61.02%   60.31%   -0.71%     
=====================================================================
  Files                                     21       21              
  Lines                                   3738     3782      +44     
=====================================================================
  Hits                                    2281     2281              
- Misses                                  1457     1501      +44     

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