Refactor: remove LiveScript

[belusky]

Refactor: LiveScript → Modern JavaScript (lib/ and test/)

Summary

This issue tracks the removal of all LiveScript compilation artifacts from lib/ and test/, replacing them with clean, modern JavaScript. The grasp source was originally written in LiveScript (.ls) and compiled; this refactor will make the compiled output the canonical source.

No functional changes are intended. All 253 existing tests must continue to pass.

Completed Phases

Phase	Description	Status
0	Compile test/*.ls files to test/*.js (JS baseline)	✅
1	Verify all tests pass before any refactoring begins	✅
2	Refactor lib/text.js (remove IIFEs, var→const/let)	✅
3	Refactor lib/format.js (remove IIFEs, var→const/let, replace compose$)	✅
4	Refactor lib/options.js (remove IIFEs, var→const/let)	✅
5	Refactor lib/help.js (remove IIFEs, var→const/let, replace repeatString$)	✅
6	Refactor lib/replace.js (remove IIFEs, var→const/let, replace in$, slice$)	✅
7	Refactor lib/index.js (remove IIFEs, var→const/let, replace curry$, slice$, toString$)	✅
8	Refactor test/_helpers.js (modernize StdIn/FileSystem classes)	✅
9	Refactor all test/*.js files (remove IIFEs, var→const/let)	✅
10	Update package.json (remove livescript, update engines, update scripts)	✅
11	Delete Makefile	✅
12	Full test suite verification (253 tests pass)	✅
14	Replace prelude-ls with native JS (lib/utils.js, replace all imports)	✅
16	lib/index.js - fix ref$ leak, convert var→let, move declarations to point of use	✅
17	test/_helpers.js - replace LS class boilerplate with ES6 class syntax	✅
18	bin/grasp - var→const, modernize style	✅
19	lib/replace.js - replace C-style for loops, IIFE closures, pre-declared vars	✅
20	lib/format.js - inline compose helper; lib/text.js - arrow function	✅
21	Full test suite verification (253 tests pass)	✅

Plan (Remaining)

Phase	Description	Status
13	(optional) Replace async library	⏳
15	(optional) Migrate to ESM	⏳

What will intentionally remain unchanged

Item	Reason	Future phase
async library	stdin EventEmitter path makes conversion non-trivial	Phase 13
require()/module.exports	CJS works fine; ESM migration is a separate concern	Phase 15

Files affected

lib/text.js, lib/format.js, lib/options.js, lib/help.js, lib/replace.js, lib/index.js, bin/grasp, test/_helpers.js, test/*.js (19 test files), package.json, Makefile (deleted)

[belusky]

c53f4c3 fixes cross-platform test compatibility issues in lib/index.js and three LiveScript test files (test/help.ls, test/lib-funcs.ls, test/more-options.ls), ensuring the test suite is stable before the LiveScript.

Also updates engine name reference from grasp-squery to @gjax/grasp-squery in lib/index.js and corresponding test assertions in test/lib-funcs.ls and test/more-options.ls, aligning with the maintained fork already used as the npm dependency.

[belusky]

Replaced all prelude-ls usage with native JavaScript equivalents:

• Created lib/utils.js with lines, unlines, capitalize, camelize, dasherize
  (needed for exact prelude-ls behavioral equivalents: lines() returns [] for empty string,
  dasherize() handles HTMLDivElement-style PascalCase correctly)
• Created test/utils.js with 33 unit tests
• Replaced prelude-ls in lib/format.js, lib/help.js, lib/replace.js, lib/index.js, test/_helpers.js
• Removed prelude-ls from package.json dependencies
• All 253 tests passing