I Ditched Obsidian Sync and Built My Own — Here's What Actually Happened

Obsidian Sync costs $8/month. That’s $96/year to sync markdown files — plain text — across your devices. I already pay for a VPS. I already run Docker. And I was already staring at a bill for a note-syncing service that, fundamentally, moves .md files between computers. So I asked myself: how…