fix(blog): avoid barrel import in client component to fix build

The blog-analytics.tsx client component was importing from the @/lib/blog
barrel export, which transitively included content.ts that uses the Node.js
fs module. This caused the build to fail with "Module not found: Cannot
resolve fs" error.

Changed imports to use direct file paths:
- Import BlogPost type from @/lib/blog/types
- Import analytics functions from @/lib/blog/analytics

This avoids pulling content.ts into the client bundle.

apps/web-roo-code/src/components/blog/blog-analytics.tsx

@@ -1,8 +1,13 @@
 "use client"
 
 import { useEffect, useRef } from "react"
-import type { BlogPost } from "@/lib/blog"
-import { trackBlogIndexView, trackBlogPostView, trackBlogPostScrollDepth, trackBlogPostTimeSpent } from "@/lib/blog"
+import type { BlogPost } from "@/lib/blog/types"
+import {
+	trackBlogIndexView,
+	trackBlogPostView,
+	trackBlogPostScrollDepth,
+	trackBlogPostTimeSpent,
+} from "@/lib/blog/analytics"
 
 interface BlogIndexAnalyticsProps {
 	postCount: number