Restore frontend desktop home hero layout

[coderabbitai]

Summary

• restore the desktop homepage hero image layout in src/frontend/templates/home.html
• remove the temporary TODO comment and the now-unused .px-10-percent CSS helper

Testing

• mise exec go@1.26.1 -- go test ./... (from src/frontend)

Initiative Context

• Initiated by: tsmith.v11
• Source thread: https://slack.com/app_redirect?channel=C0AUP6NPP6Z&cid=C0AUP6NPP6Z&message_ts=1777014428.266229

Final Prompt

Implement one existing TODO in the microservices-demo repository, make the change, verify it, and open a PR for it.

Final Plan

PR opened: #216

I picked the homepage frontend TODO and restored the desktop hero layout it described.

• 🛠️ src/frontend/templates/home.html +2/-4 restored the large-screen left hero image column and switched the main content width back to col-lg-8.
• 🛠️ src/frontend/static/styles/styles.css +0/-4 removed the temporary .px-10-percent rule that became unused once the original layout was restored.
• Summary: 2 files changed, +2/-8.

Verification: mise exec go@1.26.1 -- go test ./... from src/frontend.

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