Bugfix/primitives cleanup

[hexplus]

Description

Removes six public APIs that were either one-line forwards to existing primitives or identity wrappers, contradicting the SibuJS philosophy of plain verbs and no framework ceremony:

• createSignal → was return signal(value). Use signal() directly.
• createMemo → was return derived(fn). Use derived() directly.
• createEffect → was return effect(fn). Use effect() directly.
• memo → was return derived(factory). Use derived() directly.
• memoFn → was return derived(callback). Use derived() directly.
• composable → was return setup (identity function). Plain functions are already composables in SibuJS.

Three source files (src/patterns/primitives.ts, src/core/signals/memo.ts, src/core/signals/memoFn.ts) are reduced to empty stubs and can be deleted from disk in a follow-up commit. All barrel exports, build helpers (ide.ts metadata + type stubs + snippets, linting hook list, analyzer module table, Vite/Webpack pure-annotation list, plugins/ecosystem metadata), internal JSDoc references, and the test suite have been updated accordingly. Version bumped to 1.4.0.

Related Issue

Closes #

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update

Checklist

• I have read CONTRIBUTING.md
• My code builds without errors
• I have tested my changes (npm run lint 395 files clean, vitest run 198 files / 2105 tests passing)
• I have updated documentation if needed (CHANGELOG 1.4.0 entry with migration guide, sibujs-web Reference page sections + sidebar, public/llms.txt, public/llms-full.txt)