Release engine 0.1.5, CLI 4.1.0 and skill 4.3.0 (#787)

* Release engine 0.1.5, CLI 4.1.0 and skill 4.3.0

Ship GPT Image 2.5 Flare and native transparent assets. Refresh generated provider distributions for the release.

Prepared with AI assistance under the maintainer's instructions.

* Fix: lock released engine platform packages

Regenerate all five 0.1.5 platform resolutions after npm publication and verify frozen installation.

Prepared with AI assistance under maintainer instructions.

.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: 4.2.3
+version: 4.3.0
 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 @@
-0.1.4
+0.1.5