[CaffeinatedCoder]

Closes #205

Problem

ClosedSetTypes read the set's own members alone. A base class's Parse(string), Parse(string, bool), TryParse(string?, bool, out TSelf), Match, a static All, a protected _name, an IParsable<TSelf> it implements, and its sealed ToString() failed the aspect (LAMA0500, LAMA0502, LAMA0503, LAMA0512) naming nothing the user wrote, in this project and from another. A base class's ToString() that is not sealed was replaced by the generated one without a word, where a value object's base record's is CMTK1011.

Change

• Names and signatures are checked on each base class, private members aside (a base's private _name and _all built and still do); an IParsable<TSelf> a base implements is named with its base. CMTK1011 says "in its base type X".
• A base's sealed ToString() is the seam, through ValueObjectDeclaration.DeclaresToString; one not sealed is CMTK1011 with the value objects' remedy (declare ToString() in the set, or seal the base's).
• Breaking for a build that passed on 2.3.0: a closed set over a base class whose ToString() is not sealed. Decision 121 records refusing over taking it as the seam (which would change what such a set prints in a patch, without a word) and the exception to decision 34; the changelog says what to write instead.
• CS0738 joins CS0535 as what a refused set may leave in BuildOutcomeTests, where a base's All has another type.
• Generators README, design/aspects.md, design/closed-sets.md, the ADR index, two claims.

Tests

• BuildOutcomeTests: each member above in a base class of this project, Parse, IParsable and both ToString() forms in the fixture's library base, QualifiedName (refused before, through the interface mapping), and four that build: a sealed ToString() of either assembly, private fields, a [JsonConverter] on the base. InheritedMembersTests holds what a set over a sealed ToString() prints, with its name, All, Parse and JSON generated as usual; GeneratedSurface.verified.txt gains that set.
• Removing the base reads and the ToString() refusal fails the 11 new refusal rows and the two LAMA guards (13 of 310); reverting the seam fails the test project's build on MaskedSet.
• Full suite green on a merge of this branch with EF Core: Min, Max, Order or OrderBy(x => x) over a value object boxed to object orders by the column, not its CompareTo #206's and CMTK0005 and CMTK0006 miss a type parameter constrained to a value object by new(), which CMTK0001 reports #207's fix branches (33,026 passed, SQL Server on azure-sql-edge).

Found by a sweep of release/2.3.1 @ dbdd44e for the defect class of #191-#197.

🤖 Generated with Claude Code