Merge setup/bun-migration: migrate from pnpm to Bun

- Replace pnpm with Bun as package manager
- Add bun.lock, remove pnpm-lock.yaml
- Apply lint fixes to non-conflicting files
- Keep main's feature changes for conflicting files

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: nearestnabors

.github/workflows/ci.yml

@@ -15,25 +15,19 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Setup pnpm
-        uses: pnpm/action-setup@v4
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
         with:
-          version: 10
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: "20"
-          cache: "pnpm"
+          bun-version: latest
 
       - name: Install dependencies
-        run: pnpm install --frozen-lockfile
+        run: bun install --frozen-lockfile
 
       - name: Type check
-        run: pnpm typecheck
+        run: bun typecheck
 
       - name: Lint check
-        run: pnpm check
+        run: bun check
 
       - name: Build
-        run: pnpm build
+        run: bun run build

bun.lock

@@ -13,7 +13,7 @@
     "dev": "tsx watch src/index.ts",
     "build:ui": "rm -rf dist/ui && mkdir -p dist/ui && VITE_INPUT=auth-button.html vite build && VITE_INPUT=tweet-preview.html vite build && VITE_INPUT=conversation-list.html vite build",
     "build:server": "tsc",
-    "build": "pnpm run build:ui && pnpm run build:server",
+    "build": "bun run build:ui && bun run build:server",
     "start": "node dist/index.js",
     "typecheck": "tsc --noEmit",
     "check": "biome check .",
@@ -37,7 +37,8 @@
     "vite-plugin-singlefile": "^2.0.3"
   },
   "engines": {
-    "node": ">=20.0.0"
+    "node": ">=20.0.0",
+    "bun": ">=1.0.0"
   },
   "keywords": [
     "mcp",