feat: convert to TypeScript following @mat3ra/made pattern

[Copilot]

Converts @mat3ra/ide to TypeScript using the same tooling setup as @mat3ra/made: tsc for transpilation, ts-node for test execution, and @mat3ra/tsconfig for shared compiler config.

Source files

• All src/js/*.js → *.ts with type annotations
• compute.ts exports ComputedEntityMixin and WithComputedEntity types, replacing the hand-maintained compute.d.ts
• default.ts exports ComputeConfig and ExternalBucket interfaces
• enums.ts: typed class members; ?? instead of || in abe getter for correct undefined handling
• utils/time.ts: Math.trunc() replaces parseInt(String(...))

Tests

• All tests/js/*.js → *.ts
• src/js/utils/time.tests.js moved to tests/js/utils/time.tests.ts — was never discovered by mocha before (6 tests now run vs. 2)

Build tooling

	Before	After
transpile	babel --out-dir dist/js src/js	tsc -p tsconfig-transpile.json
Test require	@babel/register/lib	ts-node/register

• Added tsconfig.json / tsconfig-transpile.json (both extend @mat3ra/tsconfig)
• Added typescript, ts-node, @mat3ra/tsconfig, @typescript-eslint/*, @types/* to deps
• Removed @babel/cli; babel deps moved to devDependencies
• Updated @mat3ra/code/@mat3ra/esse → 2026.5.27-0, mocha → 10.3.0