v0.3.15 -- Clean plugin name in OpenCode UI

What Changed

Clean Plugin Name in OpenCode UI

The install script (scripts/install.mjs) now registers the plugin as "parallax-opencode" (npm package name) in opencode.json instead of "./plugins/parallax-engine.js" (local file path).

Before: OpenCode showed file:///C:/Users/user/.config/opencode/plugins/parallax-engine.js
After: OpenCode shows parallax-opencode (just like oc-crofai)

How npx Installation Works Now

1. npx parallax-opencode downloads and runs scripts/install.mjs
2. Copies agents and skills to ~/.config/opencode/
3. Runs npm install parallax-opencode@latest --ignore-scripts to install the package in node_modules
4. Registers "parallax-opencode" in opencode.json

Files Changed

• scripts/install.mjs -- pluginEntry changed to "parallax-opencode", added ensureNpmPackage() to install package in node_modules
• package.json -- v0.3.14 -> v0.3.15