get more moonbit code styles

[tiye]

No description provided.

[Copilot]

Pull Request Overview

This PR refactors the codebase to adopt the new Moonbit style, replacing module-scoped references with Cirru::… syntax, switching string concatenations to +=, and bumping the package version.

• Migrate all @lib.Cirru references to Cirru::… and simplify enum variants.
• Refactor concatenation in writer and other modules to use +=.
• Bump moon.mod.json to v0.1.0 and adjust CI workflow.

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/main/main.mbt	Update parser/formatter calls to Cirru::parse?/Cirru::format? and add a typealias.
src/lib/writer.mbt	Refactor string concat to +=, update WriterNode syntax and method signatures.
src/lib/tree.mbt	Replace Cirru::List/Leaf with short variants and preallocate arrays.
src/lib/s_expr.mbt	Shorten pattern matches, switch to char_at for string indexing.
src/lib/primes.mbt	Unify Match arms to short variants, implement Default, Compare, Hash more cleanly.
src/lib/parser_test.mbt	Update tests to use Cirru::parse! and Cirru::format!.
src/lib/parser.mbt	Refactor parser APIs to Cirru::parse, update lex-state handling.
moon.mod.json	Bump version from 0.0.13 to 0.1.0.
README.md	Change examples to moonbit syntax and new Cirru:: API.
.github/workflows/check.yml	Remove OS condition on install step.

Comments suppressed due to low confidence (4)

src/lib/writer.mbt:251

• There's a typo in the error message—Unpected should be Unexpected.

raise FormatCirruError("Unpected condition")

.github/workflows/check.yml:15

• The removal of this OS condition means the install script will now run on Windows runners, which will likely fail. Consider restoring or updating the condition to skip the install step on Windows.

if: ${{ matrix.os != 'windows-latest' }}

src/main/main.mbt:2

• [nitpick] The typealias @lib.Cirru declaration appears incomplete or ambiguous—there’s no target type specified. Ensure the alias syntax correctly maps to the intended type.

typealias @lib.Cirru

src/lib/writer.mbt:76

• Consider adding unit tests for generate_leaf to cover strings with special characters (e.g., newlines, quotes, backslashes), since the concatenation logic was refactored.

fn generate_leaf(s : String) -> String {