test(harness): pin the release anchors mechanically, and sweep the deferred backlog - #427
Merged
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Conversation
…ferred backlog
Two pieces of owed work from the v2.3.9 cut, both of the same kind: a fact this
project states in many places, kept in step by nothing but attention.
RELEASE-ANCHOR AUDIT
`crates/rustynes-test-harness/tests/release_anchor_audit.rs` pins 15 anchors
across 10 documents against `[workspace.package] version` -- the README badge and
Current Release section, `docs/STATUS.md`, both `AGENTS.md` anchors plus its
"never claim a later version" guard, `VERSION-PLAN.md` (header AND the `(current)`
row of its release table), `to-dos/ROADMAP.md`, `SUPPORT.md`, `SECURITY.md`, the
root `ROADMAP.md`, `OVERVIEW.md`, and `ARCHITECTURE.md`.
It is modelled on `libretro_info_audit.rs` deliberately and for the same reason.
That audit exists because the libretro `.info` `display_version` drifted from the
workspace and told every RetroArch user the wrong LICENCE for eleven days; nothing
in the repo compared the two, so nothing could catch it. The prose surfaces had
exactly that shape of hole, and at v2.3.9 they were holding SIX different values,
the oldest four releases stale. The manifest is the single source of truth; every
other statement of the fact is now COMPARED against it rather than maintained
beside it.
Three assertions beyond the version itself, each for a failure already observed:
* The CHANGELOG must carry a section for the workspace version, with a parseable
`- <date> - "<Codename>"` tail. `release-auto.yml` reads that exact line
TWICE -- once for the release-body fallback when no
`.github/release-notes/vX.Y.Z.md` override exists, and once to derive the
release title's codename -- and a malformed header broke the v2.1.7
auto-release outright. Failing in CI beats failing at publish time.
* Any anchor that quotes a codename must quote the CHANGELOG's. A correct
version beside the PREVIOUS release's codename is the more confusing error:
the number looks right, so the sentence around it is trusted.
* `VERSION-PLAN.md`'s table must mark exactly one row `(current)`. Its drift is
different in kind from a header's -- at v2.3.9 the header said v2.3.6 while
the table stopped at v2.3.5 and still marked THAT row current, so the marker
was three releases behind the header that was itself three releases behind the
tree.
The load-bearing property is that it FAILS CLOSED. `versions_at` panics when a
marker matches nothing, with a message asking to be taught the new wording. An
audit that finds zero anchors and reports success is indistinguishable from one
that found them all correct, and that indistinguishability IS the defect class
v2.3.9 was about.
Proven by mutation rather than asserted, per this project's standing rule that a
passing test proves nothing until it has been shown to fail. Five independent
mutations, each caught by the test it should be caught by and only that one:
version drift (README badge v2.3.9 -> v2.3.7) ....... FAILED, correct
codename drift (SUPPORT.md "Crucible" -> "Overtone") FAILED, correct
anchor reworded away (STATUS.md marker changed) ..... FAILED, correct (closed)
`(current)` marker removed from VERSION-PLAN ........ FAILED, correct
CHANGELOG section renamed 2.3.9 -> 2.3.99 ........... FAILED, correct
Each mutation restored the file byte-for-byte and `touch`ed it afterwards -- a
`shutil.move`-style restore preserves the pre-mutation mtime, which leaves cargo
reusing a binary built from mutated source. That failed loudly once before; a
stale binary that PASSES is silent.
The two small manifest-parsing helpers are duplicated from the libretro audit
rather than shared. Cargo compiles each `tests/<name>.rs` as its own crate, and
the alternative -- `tests/common/mod.rs` -- pulls in a 46 KB framebuffer/ROM
harness this audit has no use for. What is duplicated is a PARSER; the fact still
has exactly one home.
What it deliberately does not check: whether the prose around the version is TRUE.
No test can tell whether a codename fits or whether a scheduler description
matches the scheduler. It removes the mechanical claims from the human review
surface so the ones needing judgement are what remains.
DEFERRED BACKLOG SWEEP (v2.3.5 -> v2.3.9)
`to-dos/DEFERRED-AND-CARRYOVER-FEATURES.md` was last reconciled entry-by-entry at
v2.3.4. The previous commit in this line DATED it rather than re-dating it, and
left the sweep as real work; this is that work. Eleven entries struck, each
carrying its evidence inline -- a file that exists, a workflow line number, a test
that says so -- rather than a bare tick, so a closure can be disagreed with.
Most of what the sweep found was stale by far more than the five releases it was
scoped to. The WHOLE of section 6a -- the four items A1-A4 that define the
timebase rewrite -- shipped in v2.0.0 "Timebase" on 2026-07-03, six weeks and
roughly twenty releases before this sweep, and section 6's preamble still
described AccuracyCoin as "100% / 139/139" when it has been an exact 141/141 since
v2.0.3. A backlog that lists the project's designated MAJOR release as pending is
not merely untidy; it is actively misleading about what the emulator IS.
Three entries were closed by something other than what they proposed, and are
struck with that distinction stated rather than quietly ticked:
* `cargo-hack` feature clippy -- the tool was never adopted; the combos are
ENUMERATED in `ci.yml` instead (eight invocations, including the three wasm32
ones). The coverage gap is closed and a real residual remains: a NEW feature
is uncovered until someone adds a line. Recorded rather than glossed.
* `merge_group` + PR-Ubuntu-only matrix -- the matrix half shipped
(`ci.yml:246-252` picks a two-OS set for a regular PR and the full four-OS set
otherwise, with `release/*` head branches deliberately taking FULL, which is
why a release PR still runs macOS and Windows). Narrowed to the merge queue
alone, which genuinely does not exist in any workflow.
* R3 (`apu_reset/len_ctrs_enabled`) -- closed in v2.0.0 beta.3, but as a HARNESS
ARTIFACT, not an emulation residual, so A4's cycle-accurate reset is not what
fixed it. `tests/apu_reset.rs:107` says so verbatim. A residual that dissolves
under a corrected measurement is a different outcome from one a refactor
closed, and conflating them inflates what the refactor is credited with.
Also struck with evidence: BasicBot (`basic_bot_panel.rs`, v1.8.9-beta.4),
multi-monitor detachable tool windows (`detached.rs`, v2.3.0 -- whose own preamble
records that v2.2.9's affordance merely EMBEDDED the panel), the free arm64 CI leg
(`ubuntu-24.04-arm` in both matrix arms), `dorny/paths-filter` per-job skips
(closed by v2.3.9: the `CI success` aggregator the entry names as its prerequisite
is at `ci.yml:712`, and the second filter step gates `test-roms` at review time),
and the two AccuracyCoin PPU tests "ALE + Read" / "Hybrid Addresses" (closed in
v2.0.3 by the 2-cycle-ALE promotion -- the first of the two routes that entry
itself named).
Section 7's mapper entries below the v2.3.4 line are EXPLICITLY NOT swept, and the
header says so. They need a ROM corpus to adjudicate, and asserting them from the
source alone would be precisely the over-claim this catalogue exists to avoid.
GATES
cargo fmt --all --check ......................... clean (exit 0)
cargo clippy --workspace --all-targets -D warn .. clean (exit 0)
release_anchor_audit ............................ 4 passed
libretro_info_audit ............................. 3 passed (unaffected)
pre-commit markdownlint on changed files ........ passed
No emulation source changes, so the AccuracyCoin 141/141 and nestest 0-diff
results verified for v2.3.9 stand. Exit codes were checked directly rather than
through a pipe -- `cmd | head && echo clean` prints "clean" regardless, which is
the same shape of false pass this whole change is about.
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Important
This repository does not receive automatic reviews because it has fewer than 10 stars. ⚙️ Run configurationConfiguration used: Path: .coderabbit.yaml Review profile: ASSERTIVE Plan: Pro Plus Run ID: 📝 WalkthroughWalkthroughThe change adds a fail-closed Rust integration test for release-version anchors, changelog metadata, codenames, and ChangesRelease consistency and backlog maintenance
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🟡 Moderate · up to The PR can currently allow malformed release metadata to pass its new audit and leaves several completed backlog items with contradictory or inaccurate documentation, including the multi-viewport implementation description. This could mislead release automation, maintainers, and users, so the changes are not merge-ready until those inconsistencies are corrected. Sequence Diagram(s)sequenceDiagram
participant WorkspaceManifest
participant ReleaseAnchorAudit
participant Documentation
WorkspaceManifest->>ReleaseAnchorAudit: provide workspace version
ReleaseAnchorAudit->>Documentation: scan release anchors
Documentation-->>ReleaseAnchorAudit: return versions and codenames
ReleaseAnchorAudit->>Documentation: validate CHANGELOG and VERSION-PLAN markers
Documentation-->>ReleaseAnchorAudit: return release metadata
Possibly related PRs
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Pull request overview
This PR strengthens “mechanical truth” guarantees around the workspace release version and cleans up deferred/backlog documentation that had drifted across multiple releases.
Changes:
- Adds a new standing test-harness audit (
release_anchor_audit.rs) that pins version (and some related invariants) across multiple docs to[workspace.package] version. - Sweeps
to-dos/DEFERRED-AND-CARRYOVER-FEATURES.md, striking/annotating stale or already-shipped entries with inline evidence. - Documents both of the above in the
[Unreleased]section ofCHANGELOG.md.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| CHANGELOG.md | Adds detailed [Unreleased] notes describing the new release-anchor audit and the deferred-backlog sweep. |
| crates/rustynes-test-harness/tests/release_anchor_audit.rs | New standing audit test that validates release anchors and some release automation assumptions (CHANGELOG header shape, codename consistency, VERSION-PLAN current row). |
| to-dos/DEFERRED-AND-CARRYOVER-FEATURES.md | Updates backlog preamble and §6a/related sections to reflect the sweep results and correct stale claims with evidence. |
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Actionable comments posted: 4
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Inline comments:
In `@crates/rustynes-test-harness/tests/release_anchor_audit.rs`:
- Around line 364-369: Update the anchor parsing logic around tail.strip_prefix
and rest.find so a missing closing quote after a codename prefix causes the
audit to fail, while retaining continue only when no codename prefix is present.
Preserve normal processing for properly quoted codenames.
- Around line 326-341: Update the CHANGELOG header validation around
after_version and codename_of to parse the complete required suffix as separate
date, codename, and theme components. Require an ISO YYYY-MM-DD date, a nonempty
quoted codename, and a nonempty parenthesized theme, rejecting headers that omit
or invalidate any component while preserving the existing version-header checks.
In `@to-dos/DEFERRED-AND-CARRYOVER-FEATURES.md`:
- Around line 742-751: Update all three closed entries in
to-dos/DEFERRED-AND-CARRYOVER-FEATURES.md: at lines 742-751, describe cargo-hack
coverage as completed through explicit CI enumeration; at lines 763-772, state
that the paths-filter aggregator and path-gated jobs exist; and at lines
807-814, replace the reverted AccuracyCoin narrative with shipped evidence or
reopen the item.
- Around line 139-153: Update the multi-monitor/detachable-window documentation
to describe DetachedManager’s real OS-window implementation using its own
egui_winit and egui_wgpu stacks, rather than attributing it to
set_embed_viewports(false). Revise the shipped backlog item’s evidence
accordingly, preserving its completed status and existing implementation
references.
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- Create a new PR with the fixes
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…lse citation in the sweep Four review findings from #427, all valid. Two are defects in the audit's own stated property, and one is a factual error I introduced while writing about exactly that class of error. THE AUDIT ACCEPTED A HEADER release-auto.yml CANNOT PARSE Copilot and CodeRabbit converged on this independently. The header check asserted only that the tail contained " - " and a non-empty quoted string, so ## [2.3.9] - "Crucible" passed -- and would still have degraded the published title, because the workflow's s/^## \[[^]]*\][[:space:]]*-[[:space:]]*[0-9-]+[[:space:]]*-[[:space:]]*// strips `- <date> -` and finds nothing to strip. The audit exists to hold the release-automation contract and was holding a weaker one. Each component is now checked separately: the ` - ` prefix, an ISO YYYY-MM-DD date (four/two/two digits, not merely `[0-9-]+`-ish), a non-empty quoted codename, and a parenthesised theme. Four mutations pin it -- date removed, date malformed as `20260820`, theme dropped, codename emptied -- and all four are caught. AN UNTERMINATED CODENAME FAILED OPEN CodeRabbit found the worse one. In the codename check, `tail.strip_prefix(" \"")` succeeding and `rest.find('"')` returning `None` means an anchor that OPENS a codename and never closes it -- malformed. The code `continue`d, treating it as "version-only", and because another well-formed anchor kept `checked > 0` the whole audit still passed. That is a fail-OPEN inside the test whose entire selling point, stated in its own module docs, is failing closed. It now panics, and the distinction is written at the site: reaching the `continue` above is legitimate (an anchor that states a version and no codename), reaching this point is not. I MIS-CITED THE EVIDENCE FOR A CLOSED BACKLOG ENTRY CodeRabbit checked the multi-viewport closure against the source and found the attribution wrong. I wrote that v2.3.0 closed it via `set_embed_viewports(false)`. That string occurs in `detached.rs` exactly once, in a comment explaining why egui's native multi-viewport path was REJECTED -- an immediate viewport is rendered by a re-entrant callback that needs `&ActiveEventLoop`, valid only during event dispatch. The actual implementation is a bespoke `DetachedManager` creating real OS windows, each with its own `egui_winit::State` and `egui_wgpu::Renderer` over a `winit` window. So I read an API name in the comment that rules it out and cited it as the mechanism that shipped. In a sweep whose stated purpose is that every closure carries checkable evidence, that is the failure being swept for, committed while performing the sweep. The entry now describes what the code does, and carries the correction rather than being quietly rewritten -- the wrong citation is the useful part of the record. THE PREAMBLE CONTRADICTED THE FILE Copilot: the preamble says shipped items are "excluded" and everything below "was verified still-outstanding", which stopped being true the moment this sweep started retaining `[x]` entries with their evidence. Amended in place, with the two reasons that drove the change: a struck entry with its evidence is a closure a reader can DISAGREE with, where a deleted one is unreviewable; and the same item was twice re-proposed after being silently dropped. `[ ]` open, `[x]` closed and cited, absent means never catalogued. A NOTE ON THE PROCESS The first attempt at the header fix did not land. The edit script bundled it with the codename fix, the codename anchor did not match (rustfmt had reflowed the region), and the script exited before writing -- so NEITHER was applied while the suite stayed green and reported 4 passed. The mutation pass is what caught it: three header mutations came back "not caught", which is only explicable if the code under test was not there. A green suite after an edit is not evidence the edit happened. GATES cargo fmt --all --check ......................... clean cargo clippy -p rustynes-test-harness -D warn ... clean release_anchor_audit ............................ 4 passed markdownlint on the changed doc ................. passed Mutations, all confirmed to have actually RUN the named test rather than matching zero and exiting 0: header: date removed ........... CAUGHT header: malformed date ......... CAUGHT header: theme dropped .......... CAUGHT header: codename emptied ....... CAUGHT anchor: unterminated codename .. CAUGHT
Sixth review finding on #427 (CodeRabbit), and a real one distinct from the preamble fix: the `[x]` annotations were PREPENDED to each closed entry while the original body still described the same work as pending -- "run only locally", "remain proposed", "was reverted in full". A reader reaching the second half of an entry found it contradicting the first. Three entries corrected: * cargo-hack feature clippy -- the tail said promoting a powerset clippy into CI "closes a real coverage gap" and "Target: TBD". It reads as the gap being closed by enumeration now, with the `Target` line dropped because there is nothing left to target. * free arm64 CI leg -- the tail argued for the leg in the present tense. Past tense: that WAS why it was proposed. * the two AccuracyCoin PPU tests -- the entry retains a long narrative of the v2.0.1 attempt that was reverted in full, which is genuinely confusing beside a closure. Rather than delete it, it now opens with a note saying what it is: the record of a REJECTED approach, kept because the 2-cycle-ALE refactor it names at its end as one of two possible routes is exactly what v2.0.3 built. The stale 139/141 figures inside it are flagged as the state during that attempt. Deleting the narratives would have been quicker and would have lost why each closure took the shape it did. A rejected approach is evidence too.
…en cases Antigravity's second pass on #427. Two findings raised as blocking; one is real, one is a false positive raised for the fourth time in this project's history. Two suggestions and both nitpicks are adopted. REAL: A PRE-RELEASE WORKSPACE VERSION WOULD HAVE FAILED EVERY CORRECT ANCHOR `parse_version_prefix` stops at the first non-digit-non-dot, so with a workspace version of `2.4.0-rc.1` the anchors -- correctly reading `v2.4.0-rc.1` -- parsed back as `2.4.0` and every one of them was reported as disagreeing. A false failure that would have blocked a release cut for a reason unrelated to the anchors. The naive fix, parsing the suffix too, is wrong here and the reason is worth recording: the README badge is `badge/version-v2.3.9-blue.svg`, where the hyphen is a URL delimiter and not a pre-release marker. Teaching the parser about suffixes turns the badge into version `2.3.9-blue.svg`. So the comparison is made on the MAJOR.MINOR.PATCH core of both sides instead, via a new `version_core`, and a test pins that the badge still parses as `2.3.9`. The cost is stated rather than hidden: an anchor reading `v2.4.0` while the tree is at `2.4.0-rc.1` now passes. That is the right call -- whether prose names a pre-release suffix is a maintainer style choice, while naming the wrong release LINE is the error this audit exists to catch. The scenario turned out to be UNREACHABLE TODAY, for a reason neither the review nor I predicted. Reproducing it by setting the workspace version to `2.3.9-rc.1` never reaches the audit, because cargo rejects the manifest first: error: failed to select a version for the requirement `rustynes-apu = "^2.0.0"` candidate versions found which didn't match: 2.3.9-rc.1 A caret requirement does not match a pre-release, so every intra-workspace dependency would have to be rewritten before this workspace could carry one. The guard stays anyway, and `version_core` is tested DIRECTLY rather than through a manifest mutation that cannot run -- the day someone does that work, this audit should not be what blocks them. FALSE POSITIVE: let-chains The review calls `if let Some((k, v)) = t.split_once('=') && k.trim() == key` unstable syntax needing nightly. It is stable in edition 2024, which this workspace uses on a pinned stable 1.96.0; the IDENTICAL construct has been on `main` in `libretro_info_audit.rs` since v2.3.5 (that is where this parser was copied from); and CI compiled this exact file on the previous run -- `fmt + clippy + rustdoc` and `test (ubuntu-latest)` both green. No change made. This is the fourth time the claim has been raised on this repository. ADOPTED: THREE MORE FAIL-OPEN CASES * Table header with an inline comment. `t == "[workspace.package]"` silently skipped the table when the header carried a trailing comment, and the failure mode is fail-OPEN in an unhelpful way: `in_table` stays false, and the panic at the bottom blames a missing key rather than the header. Now `starts_with`. * Inline comment on the value. `version = "2.3.9" # pinned` yielded `2.3.9" # pinned`. The comment is stripped before unquoting. * Whitespace before a codename. `strip_prefix(" \"")` matched exactly one space, so a document writing two silently bypassed the codename check while another anchor kept `checked > 0` -- the same fail-open shape as the unterminated quote fixed in the previous commit. Now `trim_start_matches(' ')` then a bare quote, and the two-space case is mutation-tested. Also adopted: `versions_at` resumes the scan past the parsed version rather than at its start. Safe either way given the marker lengths, but resuming after what was consumed is what the loop means. VERIFIED two spaces + wrong codename ............ CAUGHT (was bypassed) inline comment on table header ......... still passes (was fail-open) pre-release core comparison ............ 5 direct assertions, incl. the badge release_anchor_audit ................... 5 passed clippy -D warnings / rustdoc -D warnings clean
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Addressing the second Antigravity pass. One blocking finding is real and fixed; the other is a false positive. Both suggestions and both nitpicks are adopted ( Blocking 1 — let-chains: not a defect, no change made
Recording it here because this is the fourth time the claim has been raised on this repository. Blocking 2 — pre-release version parsing: real, fixedCorrect. With a workspace version of The naive fix is wrong here, and the reason is worth stating: the README badge is The cost is stated rather than hidden: an anchor reading One thing you and I both got wrong about the scenario: it is unreachable today, for a reason neither of us predicted. Setting the version to A caret requirement does not match a pre-release, so every intra-workspace dependency would need rewriting before this workspace could carry one. The guard stays anyway, and Suggestions and nitpicks — all adoptedEach turned out to be a fail-open, which is the category this audit least tolerates:
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…aim I nearly acted on unchecked Antigravity's third pass on #427. Three blocking findings: ONE is real and serious, one is a false positive I verified before acting on, and one is the let-chains claim for the fifth time. REAL: THE PANIC PATH COULD PANIC `&text[at..(at + 24).min(text.len())]` slices a `str` at an arbitrary BYTE offset to build an excerpt for a failure message. These documents are full of em-dashes and arrows, so the offset can land inside a multi-byte character -- and then the audit panics WHILE FORMATTING THE DIAGNOSTIC, replacing the message that explains the real failure with a byte-index error about the reporting code. A diagnostic that can crash the diagnosis is worse than no diagnostic: the failure it was written to explain becomes strictly harder to understand than if the excerpt had been omitted. Three sites, all in message paths, all now `chars().take(n)`. Reproduced before and after. With a marker followed by a run of em-dashes, the audit now reports: SUPPORT.md: found `the current release is **v` ... but what follows is not a MAJOR.MINOR.PATCH version: "———————————" which is the message that was designed, rather than a char-boundary panic. FALSE POSITIVE, CHECKED RATHER THAN ACCEPTED: SUB-TABLE MATCHING The review states `starts_with("[workspace.package]")` also matches `[workspace.package.metadata]`, so the parser would read `version` from the wrong section, and supplied a fix. It is a plausible-sounding claim about a real class of bug, and I had already written the fix and a commit message explaining the regression I had supposedly introduced -- before testing it. It does not hold. The literal ends with `]`; the sub-table has `.` at that position: "[workspace.package.metadata]".starts_with("[workspace.package]") == false '[workspace.package.' vs '[workspace.package]' Confirmed end-to-end as well: injecting such a sub-table above the real one and running the audit under BOTH parser forms reads `2.3.9` either way. The exact-comparison form is kept, because it is correct without requiring a reader to notice that a closing bracket is doing the work -- but the comment now says what is true instead of crediting a fix for a bug that was never there, and a new test pins the property so the reasoning cannot be lost. `sub_table_headers_do_not_match_the_workspace_package_table` asserts the `starts_with` fact directly alongside the four shapes the parser must handle. Recording this because the near-miss is the point. This PR is an audit built to stop unverified claims reaching `main`, and I came within one command of committing an unverified claim about it, in the confident register of a bug fix. The reviewer's other two findings were correct, which is exactly what makes the third one easy to wave through. FALSE POSITIVE, FIFTH OCCURRENCE: let-chains Stable in edition 2024; identical construct on `main` in `libretro_info_audit.rs`; CI has compiled this file green on three runs of this PR. No change. release_anchor_audit ..... 6 passed clippy -D warnings ....... clean
…ng a copy of itself Antigravity's fourth pass on #427. Two adopted, two suggestions adopted, one false positive for the sixth time. The interesting part is a defect in my own test that only the mutation pass could see. TWO LATENT FAIL-OPENS, BOTH THE SAME SHAPE Neither is live; both would wait for a reformat and then silently stop checking. * Markdown emphasis between version and codename. `**v2.3.9** "Crucible"` leaves `tail` starting at `**`, `strip_prefix('"')` fails, and the anchor takes the legitimate "no codename here" path -- silently skipped, while another anchor keeps `checked > 0`. Checked against all ten documents rather than assumed: no anchor is written that way today. Now strips `*` as well as spaces, and the version-only shapes still skip correctly (`**v2.3.9** (2026-08-20)` strips to `(2026-08-20`, not a quote). * A version at the end of a sentence. `parse_version_prefix` consumed contiguous dots, so `v2.3.9.` yielded four parts, returned `None`, and the caller turned that into a PANIC. Fail-closed is right for a missing marker; a full stop is not a missing marker. Trailing dots are trimmed, and `2.3.9.4` is still correctly rejected. A TEST THAT REIMPLEMENTED WHAT IT CHECKED The first version of the emphasis test declared a local fn strip(t: &str) -> &str { t.trim_start_matches([' ', '*']) } and asserted against THAT. It passed, and the mutation removing the production stripping came back NOT CAUGHT -- because the test was never looking at the production code. A test that reimplements its subject is testing itself, and it will agree with itself forever. Fixed by extracting `skip_to_codename` and having both the audit and the test call it. The mutation is now caught. This is the third time in this release that "extract it so a test can reach it" has been the fix -- the injectable predicate in `atomic_write`, `TimelineWatch` in the debugger, and now this -- and in every case the code READ as testable beforehand. SUGGESTIONS ADOPTED AS SCOPE NOTES `v.split('#')` would truncate a TOML value legitimately containing `#`. Correct for every key this private helper is asked for (`version`, `license`); the note now says so, and says that a future caller wanting a `#`-bearing value needs a real parser rather than a patch. The reason a `toml` dependency is not pulled in for a documentation audit is that this test target would be the only thing needing it. FALSE POSITIVE, SIXTH OCCURRENCE: let-chains Stable in edition 2024. CI has now compiled this file green on four runs of this PR, at four different SHAs. No change. release_anchor_audit ..... 8 passed clippy -D warnings ....... clean mutations ................ emphasis stripping CAUGHT, trailing-dot trim CAUGHT
Antigravity review (Gemini via Ultra)Introduces a fail-closed integration test to enforce release version and codename synchronization across project documentation, alongside a reconciliation of the deferred backlog. Blocking issues
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Aug 20, 2026
Folds the four v2.4.0 items into the existing [Unreleased] sections rather than adding parallel ones -- #427 had already opened Added/Fixed/Changed there, and markdownlint's MD024 caught the duplicate headings before they landed. Covers: the shared atomic-write helper and the fourth call site the plan did not name; the timeline generation counter and why it deliberately does not bump on a same-timeline restore; the two skip_serializing_if fields and why both directions are tested; and the upstream sync, which turned out to be one line.
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Two pieces of owed work from the v2.3.9 cut, both the same kind of problem: a fact this project states in many places, kept in step by nothing but attention.
The release-anchor audit
crates/rustynes-test-harness/tests/release_anchor_audit.rspins 15 anchors across 10 documents against[workspace.package] version.Modelled on
libretro_info_audit.rsdeliberately. That audit exists because the libretro.infodisplay_versiondrifted from the workspace and told every RetroArch user the wrong licence for eleven days — nothing in the repo compared the two, so nothing could catch it. The prose surfaces had exactly that hole, and at v2.3.9 they were holding six different values, the oldest four releases stale.Three assertions beyond the version itself, each for a failure already observed:
release-auto.ymlreads that exact line twice — the body fallback, and the title codename — and a malformed header broke the v2.1.7 auto-release outright. Failing in CI beats failing at publish time.VERSION-PLAN.mdmust mark exactly one table row(current). Its drift is different in kind — at v2.3.9 the header said v2.3.6 while the table stopped at v2.3.5 and still marked that row current.It fails closed. A marker matching nothing panics and asks to be taught the new wording. An audit that finds zero anchors and reports success is indistinguishable from one that found them all correct — and that indistinguishability is the defect class v2.3.9 was about.
Proven by mutation, not asserted. Five independent mutations, each caught by the test it should be and only that one:
Each restore was byte-for-byte and
touched afterwards — an mtime-preserving restore leaves cargo reusing a binary built from mutated source. That failed loudly once before; a stale binary that passes is silent.It deliberately does not check whether the prose around the version is true. No test can tell whether a codename fits or whether a scheduler description matches the scheduler. It removes the mechanical claims from the human review surface so the ones needing judgement are what remains.
The deferred-backlog sweep (v2.3.5 → v2.3.9)
The previous commit in this line dated
DEFERRED-AND-CARRYOVER-FEATURES.mdrather than re-dating it, and left the sweep as real work. This is that work: 11 entries struck, each carrying its evidence inline — a file that exists, a workflow line number, a test that says so — rather than a bare tick, so a closure can be disagreed with.Most of what it found was stale by far more than five releases. The whole of §6a — the four items (A1–A4) defining the timebase rewrite — shipped in v2.0.0 "Timebase" on 2026-07-03, six weeks and ~20 releases earlier, and §6's preamble still described AccuracyCoin as "100% / 139/139" when it has been an exact 141/141 since v2.0.3. A backlog listing the project's designated MAJOR release as pending is not untidy; it is misleading about what the emulator is.
Three entries were closed by something other than what they proposed, and say so rather than being quietly ticked:
cargo-hackfeature clippy — the tool was never adopted; the combos are enumerated inci.ymlinstead (eight invocations, including the wasm32 ones). Gap closed, real residual left: a new feature is uncovered until someone adds a line.merge_group+ PR-Ubuntu-only matrix — the matrix half shipped (ci.yml:246-252, withrelease/*heads deliberately taking the FULL matrix, which is why this PR's sibling ran macOS and Windows). Narrowed to the merge queue alone.apu_reset/len_ctrs_enabled) — closed in v2.0.0 beta.3 as a harness artifact, not an emulation residual, so A4 is not what fixed it. Conflating the two would inflate what the refactor is credited with.§7's mapper entries below the v2.3.4 line are explicitly not swept — they need a ROM corpus to adjudicate, and asserting them from source alone would be the over-claim this catalogue exists to avoid.
Gates
No emulation source changes, so the AccuracyCoin 141/141 and nestest 0-diff results verified for v2.3.9 stand. Exit codes were checked directly rather than through a pipe —
cmd | head && echo cleanprints "clean" regardless, which is the same shape of false pass this whole change is about.Summary by CodeRabbit
Documentation
Tests