Files
mxaccess/design
Joseph Doherty 0e93e3a8fa design/followups: file F48-F53 for known V1 residuals
After the M6 closeout sweep (F35-F47 all resolved), six residuals
remain that were either documented inline in design docs or implied
by closure language but not formally tracked as F-numbers. File them
explicitly so the next iteration has a clean starting list:

- F48: Execute `cargo publish` for V1 (F43 was dry-run only). Documents
  the 9-crate dependency-ordered publish sequence + the version bump
  from 0.0.0 placeholder to 0.1.0.
- F49: Live verification sweep for F36 (buffered subscribe) +
  F45 (recovery replay) + F47 (unsubscribe skip) + F40 (metrics).
  Closes the gap where these features ship with unit tests but
  weren't live-exercised against AVEVA in the closing iteration.
- F50: Run the F46 Suspend/Activate Frida capture live (script
  ready, capture deferred to maintainer-side).
- F51: Live type-matrix expansion for `asb-subscribe` — Bool /
  Float / Double / String / DateTime / Duration / arrays. F32 was
  closed via "deployable maximum" but the codec supports more types
  than the live matrix exercises.
- F52: Codec performance optimisations from F39 (BytesMut output
  buffer, name-signature cache, session scratch pool). Documented as
  post-V1 in M6-bench-baseline.md; filing them as F-numbers so the
  alloc-count deltas are tracked when they land.
- F53: Enable `#![warn(missing_docs)]` workspace-wide. Deferred from
  F42 — the lint surfaces hundreds of low-priority gaps that need a
  dedicated pass.

R3, R4, R8, F3 already in their respective tracking docs (the risks
register + the Open section's permanently-external-blocked entry).

Open section now contains: F3 (permanently external-blocked) +
F48-F53 (V1-residual triage).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-06 06:11:11 -04:00
..

design/ — Rust port architectural plan

This folder is the design contract for the Rust replacement of AVEVA/Wonderware MXAccess. It is the gap between the .NET reference in src/ and the Rust crates that will be written under a sibling rust/ workspace (per CLAUDE.md).

The folder is structured as a small set of focused documents. Read in order; each builds on the previous.

File Purpose
00-overview.md Mission, two-layer goal, architectural principles, non-goals
10-raw-layer.md Byte-accurate raw MXAccess layer (codec + transport + session)
20-async-layer.md Idiomatic Tokio async layer on top of the raw layer
30-crate-topology.md Cargo workspace, crates, dependencies, build/test commands
40-protocol-invariants.md Bill of materials: IIDs, opnums, envelope/handle bytes
50-error-model.md MxStatus, error types, panic/cancellation policy
60-roadmap.md Milestones M0..M6, validation strategy
70-risks-and-open-questions.md Parity gaps, unproven flows, cross-platform constraints
dependencies.md Cross- and within-milestone parallelism map; agent budget per phase
review.md Adversarial review log (BLOCKER/MAJOR/MINOR/NIT findings, all resolved)
prompt.md /loop driver prompt for autonomous M2M6 execution
followups.md Open / resolved deferred work items; auto-triaged by prompt.md Step 0 (created on first /loop run if missing)

The design is grounded in the .NET reference at src/ and the protocol artifacts in docs/, analysis/, and captures/. Do not introduce protocol behavior in these documents that is not already proven in the reference. When adding a new claim about wire format, cite either:

  • a .cs file path in src/MxNativeCodec/, src/MxNativeClient/, or src/MxAsbClient/, or
  • a docs/*.md spec file, or
  • a captures/0NN-frida-* directory or analysis/frida/*.tsv row.

This folder is documentation, not code. When the Rust workspace is created, the design here is the contract it must satisfy. When evidence in captures/ invalidates a design decision here, update the design first, then the code.

Reading order

  • New contributor: 00 → 30 → 10 → 40 → 20 → 50 → 60 → 70.
  • Protocol question: 40 first, then the relevant section of 10.
  • API question: 20 first, then 50.
  • Planning a milestone: 60 first, cross-reference 70 for blockers.
  • Scheduling concurrent work: dependencies.md for the per-phase parallelism map.
  • Driving M2M6 autonomously via /loop: prompt.md (and the followups.md triage log it maintains).