fix: bundle @huggingface/transformers instead of external resolution

Removes --external @huggingface/transformers from build, bundling it
into dist/index.js. Moves the dependency to devDependencies since it's
no longer needed at runtime. Eliminates the ENOENT utils/devices.js
error caused by broken package structure in @huggingface/transformers.

Author: ualtinok

packages/plugin/package.json

@@ -32,7 +32,7 @@
     "README.md"
   ],
   "scripts": {
-    "build": "bun build src/index.ts --outdir dist --target bun --format esm --external @huggingface/transformers --external @opencode-ai/plugin && bun build src/cli/index.ts --outfile dist/cli.js --target node --format esm && tsc --emitDeclarationOnly",
+    "build": "bun build src/index.ts --outdir dist --target bun --format esm --external @opencode-ai/plugin && bun build src/cli/index.ts --outfile dist/cli.js --target node --format esm && tsc --emitDeclarationOnly",
     "typecheck": "tsc --noEmit && tsc -p tsconfig.scripts.json",
     "test": "bun test",
     "lint": "biome check .",
@@ -44,14 +44,14 @@
   },
   "dependencies": {
     "@clack/prompts": "^1.1.0",
-    "@huggingface/transformers": "~3.7.6",
     "@opencode-ai/plugin": "^1.2.26",
     "@opencode-ai/sdk": "^1.2.26",
     "ai-tokenizer": "^1.0.6",
     "comment-json": "^4.6.2",
     "zod": "^4.1.8"
   },
   "devDependencies": {
+    "@huggingface/transformers": "~3.7.6",
     "@types/node": "^22.0.0",
     "bun-types": "^1.3.10",
     "typescript": "^5.8.0",