Initial monorepo: shared package and DBIS, ICCC, OMNL, XOM portals

Co-authored-by: Cursor <cursoragent@cursor.com>

.gitignore

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+# Dependencies
+node_modules/
+.pnpm-store/
+
+# Build outputs
+.next/
+out/
+dist/
+build/
+*.tsbuildinfo
+
+# Environment
+.env
+.env.local
+.env.*.local
+
+# IDE / OS
+.idea/
+.vscode/
+*.swp
+.DS_Store
+Thumbs.db
+
+# Debug / logs
+npm-debug.log*
+pnpm-debug.log*
+*.log
+
+# Testing
+coverage/
+.nyc_output/
+
+# Misc
+*.pem