chore: initial scaffold

Empty repo bootstrap so cloud planning tools can ingest it.
Architecture and implementation plan tracked separately.

.gitignore

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+# Rust
+/target
+**/target
+Cargo.lock.bak
+*.pdb
+
+# Node / Tauri frontend
+node_modules
+dist
+dist-ssr
+.vite
+*.local
+
+# Tauri
+/app/src-tauri/target
+/app/src-tauri/binaries/mycelium*
+/app/src-tauri/gen/schemas
+
+# Editor / OS
+.DS_Store
+.idea
+.vscode/*
+!.vscode/extensions.json
+*.swp
+*.swo
+Thumbs.db
+
+# Secrets / runtime
+*.bin
+priv_key.bin
+*.log
+.env
+.env.local

README.md

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+# mycellium-ui
+
+Cross-platform desktop GUI for [Mycelium](https://github.com/threefoldtech/mycelium) — Threefold's end-to-end encrypted IPv6 overlay network.
+
+Status: scaffolding. See the implementation plan for architecture, IPC protocol, and phasing.
+
+## Stack (planned)
+
+- **App**: Tauri v2 + Vue 3 + TypeScript
+- **Daemon**: Rust (`myceliumd`) running as system service, IPC via Unix socket / named pipe
+- **Mycelium engine**: official `mycelium` binary embedded as Tauri sidecar
+- **Targets v1**: Linux + Windows