Initial Cargo bin scaffold

Empty onionwire crate so cargo build succeeds. Identity is pubkey;
onion is locator. No XMPP. M0 Arti spike is not in this commit.

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "onionwire"
+version = "0.1.0"

Cargo.toml

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+[package]
+name = "onionwire"
+version = "0.1.0"
+edition = "2024"
+description = "Lean Tor messenger: Arti in-process, identity=pubkey, onion=locator. No XMPP."
+license = "MIT"
+publish = false
+
+[dependencies]

LICENSE

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+MIT License
+
+Copyright (c) 2026 Lance Walters
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# OnionWire
+
+Lean Tor messenger: one Rust process (ratatui + E2EE + sqlite + in-process Arti).
+Two people scan a QR, then chat. No hosted server.
+
+## Locked model
+
+- **Identity = ed25519 public key.** Friends are `UNIQUE(pubkey)`.
+- **Onion = locator only.** It can change. Never treat `.onion` as the roster key.
+- **F4 rotates the onion** (confirm by typing `ROTATE`). Same identity key. Offline friends need a QR rescan.
+- **No XMPP, no Prosody, no s2s, no C-tor binary, no DHT, no outbox in v1.**
+
+Plan of record: `/home/lancelot/.hermes/plans/2026-09-10_004409-onionwire-lean.md`
+
+## License
+
+MIT

src/main.rs

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+fn main() {
+    println!("Hello, world!");
+}