feat(baoyu-chrome-cdp): add Mermaid-to-PNG rendering via CDP

packages/baoyu-chrome-cdp/package.json

@@ -5,6 +5,7 @@
   "files": [
     "dist",
     "src/**/*.ts",
+    "assets",
     "!src/**/*.test.ts"
   ],
   "exports": {
@@ -14,7 +15,14 @@
       "require": "./dist/index.cjs",
       "default": "./dist/index.js"
     },
-    "./src/*": "./src/*"
+    "./mermaid": {
+      "types": "./src/mermaid.ts",
+      "import": "./dist/mermaid.js",
+      "require": "./dist/mermaid.cjs",
+      "default": "./dist/mermaid.js"
+    },
+    "./src/*": "./src/*",
+    "./assets/*": "./assets/*"
   },
   "description": "Shared Chrome DevTools Protocol utilities for baoyu skills.",
   "main": "./dist/index.cjs",
@@ -33,7 +41,7 @@
     "access": "public"
   },
   "scripts": {
-    "build": "node ../../scripts/build-shared-package.mjs",
+    "build": "node ../../scripts/build-shared-package.mjs --entry-out src/index.ts:index --entry-out src/mermaid.ts:mermaid --asset assets:assets",
     "prepack": "bun run build"
   },
   "engines": {