v0.8.4

⚠️ Breaking Changes

• The source fields in
  CoordinateConversionError::LinearAlgebraFailure, QualityError::EdgeLength,
  RandomPointGenerationError::VectorComputation and
  SphericalPointError::AngleComputationFailed now contain Box<LaError>.
  Dereference the boxed source for direct inspection or downcast Error::source()
  to Box<LaError>. Existing From<LaError> conversions remain available.
• Replace the profiling_suite benchmark target with the focused
  targets. Use performance-prepare before performance-release and the declarative
  performance-readme workflow. Positional performance-release tag pairs and the
  publish-readme-performance console command are removed. New paired evidence uses
  complete-run history; historical comparison archives remain unchanged.
• release-evidence now uses shared file-based selection flags instead of a positional JSON identity; existing adapter manifests require fresh main CI evidence.
• SimplexIntersectionFailure no longer implements Eq. Geometry
  and triangulation validation expose typed solver and active-set-budget failures.
• EdgeKey and TriangulationAdjacency now carry the const dimension and preserve periodic lattice displacement. VisualizationData gains periodic realization data
  and exports schema v2; nonperiodic v1 data remains readable.

fix: correct periodic diagnostics and cover validation boundaries

• Handle point-validation and predicate errors in the runnable SoS examples.
• Preserve topology-aware witnesses in periodic diagnostics and document topology and circumsphere failures.
• Cache exact vertex coordinates for each periodic report and add a validated periodic benchmark.
• Test unsupported geometry and dimensions, malformed storage, reciprocal neighbor slots, and edge-incidence corruption.
• Include the periodic diagnostic regression in feature checks and retain the roadmap's legacy deep link with a focused Markdown exception.

Merged Pull Requests

• Adopt research-repo-tools v0.2.5 #687
• Preserve periodic invariants and harden release boundaries #684
• Align simplicial terminology and inverse move contracts #683
• Preserve periodic vertex identities during realization #682
• Adopt la-stack kernels and support 8D intersections #681
• Streamline validation and automate release preparation #679
• Split profiling and declare performance workflows #678
• Adopt strict Actions and aggregate Rustdoc checks #677
• Adopt published shared tooling and linear algebra releases #675
• Bump the github-actions group with 3 updates #670

Changed

• [breaking] Split profiling and declare performance workflows #678
  5b31cb3

refactor!: split profiling and declare performance workflows

• Preserve all 112 manual diagnostics in six focused benchmark targets with
  lazy fixture setup and explicit release-signal membership.
• Acquire each revision's original harness through published declarative
  workflows, retaining complete samples, provenance and union coverage.
• Delegate report promotion and README publication to research-repo-tools,
  while preserving Delaunay's scientific and historical-asset policies.
• Refresh the WebAssembly and wrapt dependency lock entries.
• [breaking] Adopt la-stack kernels and support 8D intersections #681
  e9f4846

refactor!: adopt la-stack kernels and support 8D intersections

• Delegate exact rational dots, provisional column selection, circumsphere
  interval solves, and symbolic polynomial determinants to la-stack.
• Extend standalone exact simplex intersections through 8D with rational
  systems through order ten and explicit solver and work-budget failures.
• Preserve exact certification and fallback behavior, and document support
  limits and measured performance tradeoffs.

Fixed

• Preserve periodic vertex identities during realization #682
  c97f7fa

  • Construct periodic comparison coordinates once from canonical vertices and
    combined integer offsets, preventing false shared-face intersections.
  • Keep explicit torus metadata consistent with models that ignore image
    offsets, and document the finite-coordinate realization contract.

• Align simplicial terminology and inverse move contracts #683
  6b2c09f

docs: align simplicial terminology with Lickorish

• Define joins, links, closed stars, closure, and relative interior with contextual Lickorish citations.
• Distinguish incident D-simplex support and implicit faces from closed and open stars across topology guides and public API documentation.
• Clarify empty-simplex conventions, lifted periodic identities, and the scope of supported topology operations.

docs: correct inverse Pachner move guidance

• Document the D >= 4 limit for K3Inverse and use K2 to reverse a 3D K3 move.
• Clarify schematic move examples and obtain live edge keys through the triangulation.
• Preserve the stable Lickorish citation anchor with a line-scoped Markdownlint exception.

docs: state inverse k2 dimension requirement

• Document that K2Inverse requires D >= 3 and returns UnsupportedDimension for lower dimensions.

fix: reject unsupported inverse k2 before topology checks #683

• Return UnsupportedDimension from inverse k2 mutation and feasibility checks when D is below 3, before topology preflight.
• Clarify that inverse k1 neighbor-wiring failures restore the triangulation and return a typed invariant error without fan retriangulation.
• [breaking] Preserve periodic invariants and harden release boundaries #684
  4d7e9d6

fix!: preserve periodic invariants and harden release boundaries

• Preserve lifted periodic identities through adjacency, traversal, validation, repair, and mesh export.
• Keep topology mutations and publication boundaries coherent, including rollback, vertex-only storage, payload destruction, and checkpoint decoding.
• Strengthen independent geometric, topological, property, and downstream API regression coverage.
• Bind benchmark publication to the configuration and measurement plan used during acquisition.
• Correct scientific and API documentation, remove redundant Rust imports and bounds, and align release tooling checks.
• Include the maintainer's Cargo and Python dependency lockfile updates.

Maintenance

• Bump the github-actions group with 3 updates #670
  4f6766b

  Bumps the github-actions group with 3 updates: github/codeql-action/upload-sarif,
  github/codeql-action/init and github/codeql-action/analyze.

  Updates github/codeql-action/upload-sarif from 4.38.3 to 4.39.0

  • Release notes
  • Changelog
  • Commits

  Updates github/codeql-action/init from 4.38.3 to 4.39.0

  • Release notes
  • Changelog
  • Commits

  Updates github/codeql-action/analyze from 4.38.3 to 4.39.0

  • Release notes
  • Changelog
  • Commits

• [breaking] Adopt published shared tooling and linear algebra releases #675
  f50e13e

  • Adopt research-repo-tools 0.2.4 and la-stack 0.5.2 in every maintained
    environment and lockfile, preserving the exact arithmetic feature policy.
  • Modernize just update to upgrade tools before dependencies and audit all
    maintained locks without repeating bootstrap.
  • Keep Semgrep on the locked Python environment through a temporary,
    version-bounded override pending the upstream 0.2.5 fix.
  • Refresh uv, Rust and Python development dependencies and adapt the profiling
    harness to sysinfo's fallible constructor.
  • Box linear algebra error sources to preserve compact nested error layouts
    while retaining typed conversions and source inspection.

• Adopt strict Actions and aggregate Rustdoc checks #677
  3444210

  • Enforce explicit action identities and exact authentication commits across
    workflows and composite actions through the published shared checker.
  • Scan Rustdoc and Markdown Rust examples alongside existing native and prose
    checks while preserving production-only rule scopes.
  • Retain valid reports after failed scans and upload SARIF only when the
    current attempt publishes a complete generation.
  • Track replacement of the temporary Semgrep scope and retention bridge in
    research-repo-tools#171 and Delaunay #676.

• [breaking] Streamline validation and automate release preparation #679
  f6ebaed

ci!: streamline validation and automate release preparation

• Run portable checks once while retaining native platform validation and exact-main release evidence
• Adopt shared release tooling for frozen Cargo evidence, asset handoffs, and citation-date changelogs
• Prepare verified stable drafts after tag pushes and dispatch release benchmarks at the exact tag
• Verify evidence before tagging and refresh benchmark and notebook dependencies
• Adopt research-repo-tools v0.2.5 #687
  317a114

build: adopt research-repo-tools 0.2.5 scanner policy

• Resolve the published package and exact Semgrep extra on the common Python baseline.
• Replace temporary scanner and Rustdoc adapters with public scope and retention APIs.
• Verify report digests before SARIF upload and retain native consumer regressions.

docs: adopt shared performance and changelog rendering fixes

• Regenerate mutable performance views from retained measurements and publish rustdoc-safe links.
• Retain only the frozen report exemption and verify publication with missing first-run assets.
• Restore truncated migration notes through shared changelog generation and preserve all 34 release versions and dates.

fix(ci): enforce report verification and simplify publication

• Fail the SARIF gate when current report verification fails and invalidate local attempt markers before scanning.
• Remove the obsolete README formatter and check LF/CRLF publication with the pinned Markdown validator.
• Align Codacy with generated HTML report ownership and fix an issue-reference heading false positive.

fix: normalize Semgrep output before invalidating reports

• Use the scanner's pathlib rules for marker invalidation and scan output
• Cover trailing slashes, redundant separators, and dot components
• Preserve retained reports while rejecting stale evidence after precondition failures

fix: avoid environment sync before report invalidation

• Resolve Semgrep output with locked execution and synchronization disabled
• Keep marker invalidation ahead of the scanner's environment synchronization