chore: replace placeholder package with role-named workspace

Cargo.toml

@@ -1,6 +1,24 @@
-[package]
-name = "biggus-dickus"
-version = "0.1.0"
-edition = "2024"
+[workspace]
+resolver = "3"
+members = ["crates/domain", "crates/db", "crates/api", "crates/server"]
 
-[dependencies]
+[workspace.package]
+edition = "2024"
+rust-version = "1.85"
+
+[workspace.dependencies]
+tokio = { version = "1", features = ["full"] }
+axum = "0.8"
+sqlx = { version = "0.8", features = ["runtime-tokio", "tls-rustls", "postgres", "uuid", "macros"] }
+uuid = { version = "1", features = ["v4", "serde"] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+clap = { version = "4", features = ["derive", "env"] }
+utoipa = { version = "5", features = ["uuid"] }
+anyhow = "1"
+thiserror = "2"
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+tower = { version = "0.5", features = ["util"] }
+http-body-util = "0.1"
+reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls"] }

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");
+}

src/main.rs

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