Initial commit: Second Brain Platform

Complete platform with unified design system and real API integration.

Apps: Dashboard, Fitness, Budget, Inventory, Trips, Reader, Media, Settings
Infrastructure: SvelteKit + Python gateway + Docker Compose

.gitignore

@@ -0,0 +1,18 @@
+node_modules/
+.svelte-kit/
+build/
+.env
+*.db
+*.db-journal
+*.db-wal
+data/
+__pycache__/
+*.pyc
+.DS_Store
+services/fitness/data/
+services/trips/data/
+gateway/data/
+frontend-v2/.svelte-kit/
+frontend-v2/build/
+frontend-v2/node_modules/
+*.png