initial project scaffold

Rust workspace with nomina-core (rename engine) and nomina-app (Tauri v2 shell).
React/TypeScript frontend with tabbed rule panels, virtual-scrolled file list,
and Zustand state management. All 9 rule types implemented with 25 passing tests.

README.md

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+# Nomina
+
+Cross-platform bulk file renaming tool. Built with Rust, Tauri v2, and React.
+
+## Features
+
+- Replace, regex, remove, add, case, numbering, date, move/copy, and extension rules
+- Pipeline execution - simultaneous or sequential rule chaining
+- Live preview with conflict detection
+- Undo/revert system with persistent history
+- Preset save/load/export
+- Dark mode and light mode
+- Virtual-scrolled file table for large directories
+
+## Development
+
+### Prerequisites
+
+- Rust (stable)
+- Node.js (LTS)
+- Visual Studio Build Tools (Windows)
+
+### Running
+
+```bash
+# install frontend deps
+cd ui && npm install
+
+# start dev server
+cargo tauri dev
+
+# run core library tests
+cargo test -p nomina-core
+
+# build release
+cargo tauri build
+```
+
+## Project structure
+
+```
+nomina/
+  crates/
+    nomina-core/     # pure Rust rename engine library
+    nomina-app/      # Tauri v2 desktop app
+  ui/                # React/TypeScript frontend
+```
+
+## License
+
+CC0 (Public Domain Dedication)