[zch0227]

Follow-up to #32, which was merged before this commit reached it.

• Replaces the scaffold icon (a bar chart) with a gallery icon: an anatomy-style isometric part, exploded with dashed guide lines, hanging in a picture frame. Monochrome, four-tone shading, to match the figures the gallery shows.
• Adds a dark edition as darkIcon (icon-dark.png), like anatomy's light and dark figure editions.
• Both PNGs are 512×512 with transparency; the vector sources are in docs/icon.svg and docs/icon-dark.svg. Checked for legibility at 64 px and 32 px on light and dark backgrounds.
• Version 1.1.0 → 1.1.1. No behaviour change.

Tested: installed through the Host publish flow on MiniMax Code 3.1.1-preview.4625 (macOS 27.0); the installed package carries both icons and darkIcon. npm run check: 0 errors, the same 3.1.2 minimum-version warning as #32.

---

^{Need help on this PR? Tag @codesmith-bot with what you need.}

[MyPrototypeWhat]

Thanks! Small, clean update: version bumped consistently in plugin.json and the MCP server, darkIcon follows the package contract (512×512 PNG, file exists), the SVG sources are included, and the README file list is updated. npm run check passes (69/69); the only warning on this package (README_MIN_VERSION_MISSING) existed before this PR.

Optional: since you're touching the README, you could add an explicit "MiniMax Code 3.1.2 or later" line under ## Tested environment to clear the existing validator warning.