Release: prepare engine 0.1.3, CLI 4.0.4 and skill 4.2.2

Ship the merged DeepSeek Harness, picker and launcher-refusal fixes. Intentionally refresh generated provider and plugin release metadata. Keep this branch off main until all engine binaries and npm platform packages exist; refresh bun.lock after publication. AI assistance: Codex, under maintainer direction.

.github/skills/impeccable/SKILL.md

@@ -1,7 +1,7 @@
 ---
 name: impeccable
 description: Use when the user wants to design, redesign, shape, critique, audit, polish, clarify, distill, harden, optimize, adapt, animate, colorize, extract, or otherwise improve a frontend interface. Covers websites, landing pages, dashboards, product UI, app shells, components, forms, settings, onboarding, and empty states. Handles UX review, visual hierarchy, information architecture, cognitive load, accessibility, performance, responsive behavior, theming, anti-patterns, typography, fonts, spacing, layout, alignment, color, motion, micro-interactions, UX copy, error states, edge cases, i18n, and reusable design systems or tokens. Also use for bland designs that need to become bolder or more delightful, loud designs that should become quieter, live browser iteration on UI elements, or ambitious visual effects that should feel technically extraordinary. Not for backend-only or non-UI tasks.
-version: 4.2.1
+version: 4.2.2
 user-invocable: true
 argument-hint: "[shape · audit|critique · animate|bolder|colorize|delight|layout|overdrive|quieter|typeset · adapt|clarify|distill · harden|onboard|optimize|polish · init|document|extract|live] [target]"
 license: Apache 2.0

.github/skills/impeccable/scripts/VERSION

@@ -1 +1 @@
-0.1.2
+0.1.3