Switch to static export with build-time data fetching

- Change from server-side rendering to static export
- Fetch data at build time and save as JSON
- Remove API routes and tests, use static JSON file
- Switch back to WEB platform from WEB_COMPUTE
- Update build test for static export
- Exclude out directory from security scan
- Much simpler and more reliable approach

app/page.tsx

@@ -34,7 +34,7 @@ export default function Home() {
       setLoading(true);
       setError(null);
       
-      const response = await axios.get('/api/filaments');
+      const response = await axios.get('/data.json');
       setFilaments(response.data);
       setLastUpdate(new Date());
     } catch (err) {