Focus the application on Reddit moderation features

Set default route to Reddit moderation and update landing page feature descriptions.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 97c37082-ddc7-449c-b9cb-b4a1dbd056d9
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/7c908cf4-7bf5-4d7c-80dd-12e2d1c251ce/97c37082-ddc7-449c-b9cb-b4a1dbd056d9/iTCYN9L
