refactor: massively simplify to svelte with web/ directory, prepare for backend

.gitignore

@@ -1,46 +1,5 @@
-# Dependencies
-node_modules/
-
-# Build outputs
-.next/
-.svelte-kit/
-build/
-dist/
-.turbo/
-*.tsbuildinfo
-
-# Environment - only in root
-/.env
-/.env*.local
-
-# Logs
-*.log
-npm-debug.log*
-yarn-debug.log*
-pnpm-debug.log*
-
-# OS
-.DS_Store
-Thumbs.db
-
-# IDE
+web/node_modules/
+target/
 .vscode/
-.idea/
-*.swp
-*.swo
-*~
-
-# Testing
-coverage/
-
-# Temporary
-tmp/
-temp/
-*.tmp
-
-# Playwright
-playwright-report/
-test-results/
-
-# Docker
-docker-build.log
+web/build/
+web/.svelte-kit/