Optically align plugin icon

[Endless-Lemniscate]

What changed

• moved the transparent BotNest composer mark upward by 5 source pixels in both light and dark 128×128 assets
• kept the square marketplace logos geometrically centered and unchanged
• propagated the shared assets to the Claude/Grok package
• bumped all generated platform packages to 1.1.2

Why

The mark was mathematically centered but sat optically below the adjacent botnest text in the Codex composer. The adjustment matches the existing translateY(-1px) optical alignment used by the BotNest product header at its rendered size.

Validation

• confirmed the alpha bounds moved from y=13…114 to y=8…109 without cropping
• confirmed source and packaged icon hashes match
• Codex plugin and skill validation passed
• Claude marketplace and plugin strict validation passed
• 25 unit tests passed
• package build and production preflight passed