fix(install): build dist for git-based plugin installs

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

package.json

@@ -26,6 +26,7 @@
     "build:binaries": "bun run script/build-binaries.ts",
     "build:schema": "bun run script/build-schema.ts",
     "clean": "rm -rf dist",
+    "prepare": "bun run build",
     "postinstall": "node postinstall.mjs",
     "prepublishOnly": "bun run clean && bun run build",
     "typecheck": "tsc --noEmit",