# Changelog

All notable changes are documented here.

## Unreleased

- Added optional digit-completion counts with muted complete digits and red
  over-completion warnings.
- Added toggleable Ctrl/Command-click matching-digit highlights without turning
  the highlights into an editable multi-selection.
- Fixed cage replacement and removal in the setter so overlapping cages cannot
  remain accidentally active.
- Replaced ambiguous V/X pair labels on the board with numbered 5/10 badges and
  gave inequalities a directional chevron with a marked lesser-value tip.
- Added thirteen uniquely checked built-in examples covering every supported
  constraint family.
- Added bounded, seedable generation for classic and twelve variant families,
  plus independent uniqueness and evidence-based difficulty assessment.
- Added X-sum, skyscraper, quadruple and maximum-cell constraints across the
  model, validator, exact solver, renderer, setter and f-puzzles interchange.
- Added per-clue false semantics for liar/Wrogn puzzles, including bounded
  impossible decoy numbers and a setter-wide false-clue mode.
- Added the original, uniquely verified “Truth and lies” example demonstrating
  true and false outside, inclusion, maximum, cage, line and pair clues.
- Added outside-grid clue margins, combined dual X-sum/skyscraper labels,
  outward maximum arrows and visually distinct false clues.
- Added strict, bounded local imports for SudokuPad/CTC data and supported
  Penpa+ long links, including source reporting and explicit incompatibility
  lists instead of silently discarded constructs.
- Added a compatibility check which never fetches SudokuPad short IDs or other
  server-hosted puzzle references.
- Added standalone SVG, high-resolution PNG and single-page PDF visual exports
  for supported constraints, givens and optional solving progress.
- Added named savepoints, isolated hypothesis branches, keep/discard decisions
  and read-only replay of complete solving states.
- Added an optional configurable aid-mémoire whose labelled scratch cells
  support values, both note styles and colours without constraining the puzzle;
  its state is preserved in undo, replay, Library progress and project/share
  interchange.
- Added a generalized Sum Lab with independent digit bounds, repeats,
  required/excluded digits, selected-cell candidates, positional assignments
  and reversible manual eliminations.
- Added Candidate Lab filters, selected/touching/specific-house scopes, house
  positions, strong conjugate/bivalue links, weak links and bounded board
  overlays.
- Added technique-targeted practice generation which mines a bounded,
  deterministic set of uniquely checked puzzles and verifies the requested
  technique in the logical solve path.
- Added real ARIA row/gridcell semantics, detailed cell descriptions and
  non-wrapping Arrow, Home/End, Control/Command + Home/End and Page Up/Down
  keyboard navigation for the puzzle and scratch grids.
- Made Killer cage repeat semantics explicit in the setter and independent of
  whether a clue is required to be true or false.

## 0.1.0 - 2026-08-30

- Initial local-first Sudoku setting, playing, solving and analysis workbench.
- Added bounded classic and variant puzzle models, validation and exact solving.
- Added explainable human-style deductions and full solve-path inspection.
- Added Killer combination, relation and house-analysis helpers.
- Added local projects, progress, import/export and compact share fragments.
- Added deterministic packaging, browser tests and Toolbox SDK integration.