post3/todos/POST3-001-workspace-skeleton.md

POST3-001: Create workspace skeleton

Status: Done Priority: P0 Blocked by: —

Description

Set up the Rust workspace with both crates, Docker Compose for PostgreSQL 18, and mise.toml dev tasks.

Acceptance Criteria

• Cargo.toml workspace root with crates/* members
• crates/post3/Cargo.toml — library crate with sqlx, tokio, bytes, chrono, md-5, hex, thiserror, uuid, tracing, serde
• crates/post3/src/lib.rs — empty module declarations
• crates/post3-server/Cargo.toml — binary crate depending on post3, axum, clap, notmad, quick-xml, etc.
• crates/post3-server/src/main.rs — minimal tokio main
• templates/docker-compose.yaml — PostgreSQL 18 on port 5435
• mise.toml — tasks: up, down, dev, test, db:shell, db:migrate
• cargo check --workspace passes
• mise run up starts PostgreSQL successfully