chore: replace placeholder package with role-named workspace

crates/api/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "api"
+version = "0.0.0"
+edition.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+axum.workspace = true
+serde.workspace = true
+utoipa.workspace = true
+db = { path = "../db" }
+
+[dev-dependencies]
+tokio.workspace = true
+tower.workspace = true
+http-body-util.workspace = true
+serde_json.workspace = true
+sqlx.workspace = true

crates/api/src/lib.rs

@@ -0,0 +1 @@
+//! HTTP API: router, handlers, and OpenAPI document.

crates/db/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "db"
+version = "0.0.0"
+edition.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+sqlx.workspace = true
+thiserror.workspace = true
+
+[dev-dependencies]
+tokio.workspace = true

crates/db/src/lib.rs

@@ -0,0 +1 @@
+//! Database access. All SQL lives in this crate.

crates/domain/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "domain"
+version = "0.0.0"
+edition.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+uuid.workspace = true
+serde.workspace = true

crates/domain/src/lib.rs

@@ -0,0 +1 @@
+//! Core domain types and invariants. No I/O dependencies.

crates/server/Cargo.toml

@@ -0,0 +1,29 @@
+[package]
+name = "server"
+version = "0.0.0"
+edition.workspace = true
+rust-version.workspace = true
+
+[lib]
+path = "src/lib.rs"
+
+[[bin]]
+name = "server"
+path = "src/main.rs"
+
+[dependencies]
+tokio.workspace = true
+axum.workspace = true
+clap.workspace = true
+anyhow.workspace = true
+tracing.workspace = true
+tracing-subscriber.workspace = true
+api = { path = "../api" }
+db = { path = "../db" }
+
+[dev-dependencies]
+reqwest.workspace = true
+serde_json.workspace = true
+api = { path = "../api" }
+db = { path = "../db" }
+sqlx.workspace = true

crates/server/src/lib.rs

@@ -0,0 +1 @@
+//! Server wiring: configuration and startup.

crates/server/src/main.rs

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