Release v0.12.0 · logaan/wavelet

A pure in-memory compiler API and a compiler component with a WIT interface.
Callers supply source files, WIT dependencies, and macro capabilities explicitly.
GitHub releases include the standalone wavelet-compiler.wasm component.
Compiled browser playgrounds and a dedicated REPL, with worker isolation,
cancellation, timeouts, and recovery after compiler or runtime errors.
A code-led “Learn Wavelet in Y minutes” tour and rewritten documentation
describing the current language, component interfaces, and embedding APIs.
Pinned Code Maat history analysis with revision, churn, and coupling reports,
available through the local check suite and as downloadable CI artifacts.

Native builds, the native REPL, and the compiler component share the compiler
pipeline and snippet wrapper. Documentation generation verifies every example
through compiled execution against the independent interpreter oracle.
Macro preparation returns explicitly supplied or generated component artifacts
for host instantiation, then resumes with synchronous macro capabilities.
REPL value declarations execute during submission and report initializer errors
immediately.

Compiled string concatenation handles characters and sequence payloads.
String length counts Unicode scalars, matching the interpreter.
Compiled upper and lower match the interpreter's Unicode casing, including
multi-character mappings and context-sensitive Greek sigma.
Generated WIT escapes reserved words in public identifiers so components keep
the names declared in Wavelet.
Tuple length and statically typed tuple indexing agree with the interpreter.
Statically resolved builtin callbacks work in collection operations while
preserving local shadowing.
Form printing preserves uppercase flag names through reading and printing.
Browser resource bindings avoid a JavaScript intrinsic-name collision for
the built-in set resource.

Placeholder Derive implementations that returned constant answers. Unsupported
derivation now reports an error; operations can be defined explicitly.

What's Changed

docs: correct stale phase status in check.rs header by @logaan in #33
Reorganise the work plan vault into eight ordered goals by @logaan in #34
docs: stop pointing CLAUDE.md at the deleted dev-notes/design.md by @logaan in #35
test(differential): F4 execution harness — docs examples, interpreter vs compiled by @logaan in #36
refactor(emit): split the 14.6k-line emit.rs into a module tree by @logaan in #39
refactor(emit): split Emitter::builtin into per-group helpers by @logaan in #38
fix: run extensionless shebang scripts, not just .wlt files by @logaan in #37
Add fixed-arity tuple constructors tuple0..tuple16; values callee passes (decision 0.1) by @logaan in #41
to-string: float and char arms in the wasm backend (0.2) by @logaan in #40

Full Changelog: v0.10.0...v0.12.0