Cargo init.

backend/.gitignore

@@ -0,0 +1 @@
+/target

backend/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "backend"
+version = "0.1.0"

backend/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "backend"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

backend/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}

plan/01_CORE_MVP/backend.md

@@ -44,7 +44,7 @@ captains-log/
 ## Phase 1: Project Foundation (Days 1-2)
 
 ### Task 1.1: Initialize Rust Project
-- [ ] **File**: `backend/Cargo.toml`
+- [x] **File**: `backend/Cargo.toml`
   - Create new Rust binary project
   - Add core dependencies: axum, sqlx, tokio, serde, uuid, chrono, anyhow
   - Add dev dependencies: tarpaulin for coverage