Architecture Decision Records

Format: Status, Context, Decision, Consequences, References. An accepted ADR is never rewritten: it is superseded by a new ADR (Superseded by ADR-XXXX). All ADRs were translated from French to English on 2026-10-08 (project rule: English everywhere); on 2026-10-13 their Context sections were reworded so that they state the Product Owner's decisions without quoting them. The decisions are unchanged. Number 0036 is not used: it was taken on the F10 feature branch and never accepted (ADR-0037).

ADR	Title	Status
0001	Geometric scope: segments and circular arcs	Accepted
0002	Everything is a path, except text	Accepted
0003	Integer model, derived geometry	Accepted, partly superseded by 0031, 0034 and 0035
0004	Orthogonal pipes only	Accepted
0005	Parametric pipeline: numbers → maths → SVG	Accepted
0006	Non-destructive boolean operations	Accepted
0007	Corner radius clamping: local proportional reduction	Accepted
0008	Instance rotation by quarter turns	Accepted
0009	Toolchain: TypeScript 6, Vite, Vitest, ESLint, Prettier, VitePress	Accepted
0010	Strictness carried by ESLint first, TypeScript second	Accepted
0011	Function kinds: @kind tag and per-kind limits	Accepted
0012	One index.ts per folder, canonical import paths	Accepted
0013	Prettier next to ESLint, not inside it	Accepted
0014	Functional core, imperative shell	Accepted
0015	One export per file, named like the file	Superseded by ADR-0019
0016	Explicit inputs: no default nor optional parameter in the library	Accepted
0017	Agile backlog kept in the repository	Accepted
0018	Bézier curves allowed in static drawings only	Accepted
0019	Kebab-case file names, one export per file	Accepted
0020	Every feature starts with a research spike and ends with an audit	Accepted
0021	Agent working environment: skills, rules, hooks and an independent auditor	Accepted, partly superseded by 0038 and 0040
0022	Property-based tests, weekly link check, mutation tool deferred	Accepted
0023	Inspection cadence: demo at each feature, review and retrospective at each epic	Accepted
0024	Session journal and transcript search instead of a database	Accepted, partly superseded by 0039
0025	A portable core: any JavaScript engine, transcribable to another language	Accepted
0026	Contributions through issues only; the agent writes every change	Accepted
0027	Acceptance criteria as requirements, tests traced to them, a test report per release	Accepted
0028	Feature branches and autonomous runs: stories merge into their feature, the Product Owner merges the feature	Accepted, partly superseded by 0038
0029	One requested corner radius per vertex in the model	Accepted, superseded by 0033 for free shapes
0030	A finished free V1, then new features in a paid edition	Accepted
0031	A free shape keeps the fractional vertices of a converted polygon	Accepted, partly superseded by 0034
0032	The rectangle is a free shape, stretched by its width and height	Accepted, partly superseded by 0033 and 0035
0033	A free shape of corners, fractions until edited, points typed in the SVG's coordinates	Accepted, partly superseded by 0035
0034	Only the coordinate typed is an integer; edits keep the fractions	Accepted, partly superseded by 0035
0035	An angle and a position for every shape	Accepted
0037	A stretched option for the regular polygon	Accepted
0038	A develop branch, checks run locally, one CI on the pull request into main	Accepted
0039	A local library of the sources read: SQLite full-text search behind an MCP server	Accepted
0040	AGENTS.md holds the rules for any coding agent	Accepted